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Bitcoin XT - discussing Satoshi's Vision

A subreddit focused on providing open discussion on all things Bitcoin (BSV).
[link]

Bitcoin

Discussion about Bitcoin. BitcoinSV restores the original Bitcoin protocol, will keep it stable, and allow it to massively scale on-chain. BSV will maintain the vision laid out by Satoshi Nakamoto in the 2008 white paper - Bitcoin: A Peer-to-Peer Electronic Cash System.
[link]

Drop Zone - A Decentralized Marketplace Built on Bitcoin

An anonymous decentralized local marketplace built on Bitcoin.
[link]

Bitcoin Unlimited crashes (assert) when it sees SegWit block on testnet after you switch clients. no fix yet.

Bitcoin Unlimited crashes (assert) when it sees SegWit block on testnet after you switch clients. no fix yet. submitted by cowardlyalien to Bitcoin [link] [comments]

C# Bitcoin Library / RPC Wrapper for .Net projects, up-to-date, Testnet ready, console/web demo clients and setup instructions included.

C# Bitcoin Library / RPC Wrapper for .Net projects, up-to-date, Testnet ready, console/web demo clients and setup instructions included. submitted by mcaizgk2 to Bitcoin [link] [comments]

I was frustrated at how hard it is to setup for dev around (not on) Bitcoin Core so put this together. It includes Bitcoin Core via PPA and Rein's client and server under virtualenv. A highlight is Bitcoin Core being configured use testnet, 2gb pruned, serving RPC with a randomly generated password.

I was frustrated at how hard it is to setup for dev around (not on) Bitcoin Core so put this together. It includes Bitcoin Core via PPA and Rein's client and server under virtualenv. A highlight is Bitcoin Core being configured use testnet, 2gb pruned, serving RPC with a randomly generated password. submitted by dsterry to Bitcoin [link] [comments]

Bitcoin Unlimited crashes (assert) when it sees SegWit block on testnet after you switch clients. no fix yet.

Bitcoin Unlimited crashes (assert) when it sees SegWit block on testnet after you switch clients. no fix yet. submitted by BitcoinAllBot to BitcoinAll [link] [comments]

Does a thin client testnet wallet exist which allows offline signing? /r/Bitcoin

Does a thin client testnet wallet exist which allows offline signing? /Bitcoin submitted by BitcoinAllBot to BitcoinAll [link] [comments]

08-28 21:02 - 'Try the eclair android (testnet) client and buy something on: [link] . To get some testnet bitcoins go to [link]' by /u/ilpirata79 removed from /r/Bitcoin within 0-7min

'''
Try the eclair android (testnet) client and buy something on: [link]1 . To get some testnet bitcoins go to [link]2
'''
Context Link
Go1dfish undelete link
unreddit undelete link
Author: ilpirata79
1: starbl*c**.aci*q*co 2: *estn*t***n*.*ackend*hambur*/faucet
Unknown links are censored to prevent spreading illicit content.
submitted by removalbot to removalbot [link] [comments]

Gridcoin 5.0.0.0-Mandatory "Fern" Release

https://github.com/gridcoin-community/Gridcoin-Research/releases/tag/5.0.0.0
Finally! After over ten months of development and testing, "Fern" has arrived! This is a whopper. 240 pull requests merged. Essentially a complete rewrite that was started with the scraper (the "neural net" rewrite) in "Denise" has now been completed. Practically the ENTIRE Gridcoin specific codebase resting on top of the vanilla Bitcoin/Peercoin/Blackcoin vanilla PoS code has been rewritten. This removes the team requirement at last (see below), although there are many other important improvements besides that.
Fern was a monumental undertaking. We had to encode all of the old rules active for the v10 block protocol in new code and ensure that the new code was 100% compatible. This had to be done in such a way as to clear out all of the old spaghetti and ring-fence it with tightly controlled class implementations. We then wrote an entirely new, simplified ruleset for research rewards and reengineered contracts (which includes beacon management, polls, and voting) using properly classed code. The fundamentals of Gridcoin with this release are now on a very sound and maintainable footing, and the developers believe the codebase as updated here will serve as the fundamental basis for Gridcoin's future roadmap.
We have been testing this for MONTHS on testnet in various stages. The v10 (legacy) compatibility code has been running on testnet continuously as it was developed to ensure compatibility with existing nodes. During the last few months, we have done two private testnet forks and then the full public testnet testing for v11 code (the new protocol which is what Fern implements). The developers have also been running non-staking "sentinel" nodes on mainnet with this code to verify that the consensus rules are problem-free for the legacy compatibility code on the broader mainnet. We believe this amount of testing is going to result in a smooth rollout.
Given the amount of changes in Fern, I am presenting TWO changelogs below. One is high level, which summarizes the most significant changes in the protocol. The second changelog is the detailed one in the usual format, and gives you an inkling of the size of this release.

Highlights

Protocol

Note that the protocol changes will not become active until we cross the hard-fork transition height to v11, which has been set at 2053000. Given current average block spacing, this should happen around October 4, about one month from now.
Note that to get all of the beacons in the network on the new protocol, we are requiring ALL beacons to be validated. A two week (14 day) grace period is provided by the code, starting at the time of the transition height, for people currently holding a beacon to validate the beacon and prevent it from expiring. That means that EVERY CRUNCHER must advertise and validate their beacon AFTER the v11 transition (around Oct 4th) and BEFORE October 18th (or more precisely, 14 days from the actual date of the v11 transition). If you do not advertise and validate your beacon by this time, your beacon will expire and you will stop earning research rewards until you advertise and validate a new beacon. This process has been made much easier by a brand new beacon "wizard" that helps manage beacon advertisements and renewals. Once a beacon has been validated and is a v11 protocol beacon, the normal 180 day expiration rules apply. Note, however, that the 180 day expiration on research rewards has been removed with the Fern update. This means that while your beacon might expire after 180 days, your earned research rewards will be retained and can be claimed by advertising a beacon with the same CPID and going through the validation process again. In other words, you do not lose any earned research rewards if you do not stake a block within 180 days and keep your beacon up-to-date.
The transition height is also when the team requirement will be relaxed for the network.

GUI

Besides the beacon wizard, there are a number of improvements to the GUI, including new UI transaction types (and icons) for staking the superblock, sidestake sends, beacon advertisement, voting, poll creation, and transactions with a message. The main screen has been revamped with a better summary section, and better status icons. Several changes under the hood have improved GUI performance. And finally, the diagnostics have been revamped.

Blockchain

The wallet sync speed has been DRASTICALLY improved. A decent machine with a good network connection should be able to sync the entire mainnet blockchain in less than 4 hours. A fast machine with a really fast network connection and a good SSD can do it in about 2.5 hours. One of our goals was to reduce or eliminate the reliance on snapshots for mainnet, and I think we have accomplished that goal with the new sync speed. We have also streamlined the in-memory structures for the blockchain which shaves some memory use.
There are so many goodies here it is hard to summarize them all.
I would like to thank all of the contributors to this release, but especially thank @cyrossignol, whose incredible contributions formed the backbone of this release. I would also like to pay special thanks to @barton2526, @caraka, and @Quezacoatl1, who tirelessly helped during the testing and polishing phase on testnet with testing and repeated builds for all architectures.
The developers are proud to present this release to the community and we believe this represents the starting point for a true renaissance for Gridcoin!

Summary Changelog

Accrual

Changed

Most significantly, nodes calculate research rewards directly from the magnitudes in EACH superblock between stakes instead of using a two- or three- point average based on a CPID's current magnitude and the magnitude for the CPID when it last staked. For those long-timers in the community, this has been referred to as "Superblock Windows," and was first done in proof-of-concept form by @denravonska.

Removed

Beacons

Added

Changed

Removed

Unaltered

As a reminder:

Superblocks

Added

Changed

Removed

Voting

Added

Changed

Removed

Detailed Changelog

[5.0.0.0] 2020-09-03, mandatory, "Fern"

Added

Changed

Removed

Fixed

submitted by jamescowens to gridcoin [link] [comments]

Open Marketplace by Particl

Hi fellas, this is my first post on the darknet. I read today about the Empire Market and decided to post here about a tech that might help to end this charade of constant exit scams.
My post is about a DLT-based open source decentralized marketplace that will hopefully initiate a paradigm shift in the free and private trade between individuals and ends the exit-scams and leaky databases problem once and for all.
It is called the Open Marketplace V3.0 and is set to be released after 3 years of hard development work by Particl Project, including one year of public beta testing.
My personal belief is that they are releasing to the world a game-changing/breaking product. At minimum, due to the open source nature of the project, this is a proof of concept that is bound to shift the global eCommerce paradigm into DeCommerce.
I hope my own description below of the marketplace and its technology will fuel your interest to read more about it. My even bigger hope is that some of you will decide to become first-hand beta testers as soon as the Open Marketplace v3.0 hits the testnet (eta: a few weeks).

The marketplace:
The Open Marketplace is designed to be private by default and decentralized with no middlemen/intermediaries whatsoever. The trades are protected by two-way automated escrow via smart-contracts that de-incentivize and penalize dishonest behavior on both sides.
The Open Marketplace takes no sales commissions and charges only a tiny listing fee (<0.01$) to prevent listing spamming. All the marketplace generated fees go to the nodes that provide the hardware infrastructure for the p2p network to operate. The nodes can be public or you can run them as Tor hidden services.
The V3.0 that is set to be released will be the first version open to the wider public. It will allow anyone to create easily a decentralized personal storefront or a community market or simply buy and sell goods on the already existing markets. The user-created markets/storefronts can be visible on the marketplace if the access key is publicly announced or absolutely invisible to anyone that doesn't know the access key (held by the creator). This is an intentional privacy feature and simply put without going into many technical details, if you dont have market access key there is absolutely no way to see/detect that some market exists.
The technology:
The Open Marketplace is crypto-agnostic and currently supports payments in BTC, PART, ZCoin (DAI, NIX are next in the pipeline and many more to come). It uses as a settlement layer its native blockchain, which is an up-to-date Bitcoin codebase with added privacy features like CT, RingCT (up to 32 mixins), Stealth addresses, etc. These privacy features are used in combination to keep the financial data like escrows, transactions, etc private and most importantly un-linkable to the actual market buys/sells.
For the actual user or markets related data exchange like posted listings, buy/sell flows, encrypted user communication, built-in cryptocurrency exchange, etc, the Open Marketplace uses a custom Bitmessage variant called SMSG, which allows metadata stripped encrypted data exchange. Last but not least the Open Marketplace client has a built-in option for using Tor network via proxy.

The important people:
The cypherpunks behind Particl's Open Marketplace have been passionate pioneers and OGs in the privacy DLT field. For example, they were the first ever to implement features like RingCT, Bulletproofs, PoS, cold staking, etc on a Bitcoin codebase. Their privacy features implementations have been audited successfully by several respectable academics and security R&D providers, like QuarksLab.
The team has been so far focused on building without any marketing and thus have remained intentionally in the shadows but the latter is planned to change with the v3.0 release. One of the steps towards that will be the initiation of the long-planned Vendor On-boarding and Outreach Program and the release of the Particl Academy, an easy to understand and learn about the project portal.

Me:
I am a passionate freedom and privacy advocate that discovered the project 1.5 year ago and since then has become a member of their small but like-minded community ([email protected]/discord).
submitted by Bakounin to darknet [link] [comments]

Crypto Weekly News — October, 16

What important crypto events happened last week?

Cryptocurrencies

Tether To Replace Ethereum As The Second Largest Market Capitalization. According to Bloomberg analysts, the Tether (USDT) stablecoin may take the second place in the rating of the largest digital currencies in 2021. Thus, Tether will displace Ether (ETH) at this position. At the moment, the capitalization of ETH and Tether is about $42.066 billion and $15.737 billion, respectively. Recently, stablecoin knocked the XRP token from the third place in the ranking of the most popular cryptocurrencies.
DeFi Token Maker Sets New TVL All-Time High As Crypto Market Takes Pause.
Maker, one of the first tokens, continues to grow, setting new all-highs in total locked away value, which indicates the core stability of the DeFi markets.
Bitcoin SV Will Sponsor The Cambridge University Metanet Society.
Bitcoin Association, a Swiss-based organization, working to advance business with the Bitcoin SV blockchain, has announced its intention to sponsor the Cambridge University Metanet Society for the second year in a row. The company hopes that this will help nurture a new generation of Digital Finance professionals and bring together the brightest minds in developing new projects.

Projects And Updates

Ethereum Foundation Introduces New Smart Contract Language ‘Fe’ For The Ecosystem.
The Ethereum ecosystem has introduced a new language for writing smart contracts named Fe, which was announced by the software engineer of the Ethereum Foundation Christoph Burgdorf. Today, most applications on Ethereum are written in the Solidity language. The company believes that having additional programming options will have a positive impact on the development of the ecosystem.
Gate.io Unveils Hardware Crypto Wallet With Fingerprint Authorization.
Gate.io Exchange announces a new hardware Wallet S1 with fingerprint recognition technology. Using biometrics will both better protect the user's keys and make it easier to work with them. Initially, for the China market, it will be available in other countries in the following months.
Ethereum 2.0 Gets Closer: Zinken Testnet Successfully Launched.
The developers of Ethereum started up the final test network Zinken before moving to the actual launching main ETH 2.0 network. According to Danny Ryan, lead coordinator for Etherium 2.0, the test genesis process went successfully. The previous "dress rehearsal" in the Spadina testnet failed primarily due to incorrect support for the latest version of the Prysm client.
Nervos Integrates With HedgeTrade To Enable Community Trading Predictions.
HedgeTrade’s community-driven predictions platform now supports CKB, the native token of an open-source public blockchain project Nervos. The collaboration will provide Nervos with unique analytical tools and will allow HedgeTrade to attract a new audience.
Binance Announces Adding Support For MetaMask Wallet On Its Panama Bridge Service.
Binance's Panama Bridge Service, designed to organize compatibility with other blockchains, added support for MetaMask, Ethereum browser wallet.
Solana Announces Ethereum Cross-Chain Bridge ‘Wormhole’.
The Solana smart contract platform has announced the upcoming launch of a bridge for Ethereum ERC-20 tokens called Wormhole. The bridge will allow users to transfer funds between blockchains, directly converting ERC-20 tokens to the corresponding SPL Solana standard.

Hacking

New Zealand Man Charged With Money Laundering Via Crypto And Luxury Cars.
A 40-year-old man from Auckland, New Zealand, is accused of money laundering through the purchase of cryptocurrencies and expensive cars, reports NZHerald. The man, whose identity is not disclosed, faces 30 charges. It is alleged that he received New Zealand dollars (NZD) to buy cryptocurrencies "as part of transactions that involve money laundering".

Mass Adoption

Swipe Now Supports Samsung Pay For Its Visa Cardholders In The US.
Swipe makes life easier for their Samsung and Visa users, by adding the feature of pay with Samsung Pay App. This integration is available to all residents of the United States, excepting those living in New York.

People

Coinbase CCO, Jeff Horowitz Is About To Exit The Crypto Exchange.
CCO of Coinbase exchange, Jeff Horowitz, is leaving his post. The exact reasons weren't revealed, but Horowitz's colleagues pointed out that his retirement from Coinbase is not related to the recent statement of the exchange's CEO, Brian Armstrong. According to the new mission of Coinbase, the workers can't make political and social discussions if they are not related to the cryptocurrency industry. About 5% of employees who disagree with the new company policy chose to leave their workplace and receive compensation.
Jack Dorsey’s Square Inc Invests $50 Million In Bitcoin.
Jack Dorsey's Square payment company announced the purchase of $50 million worth of Bitcoins. Having made such a massive investment, Dorcey continues to place big bets on the digital currency, which he says will become commonly used over the next decade.
That’s all for now! For more details follow us on Twitter, subscribe to our YouTube channel, join our Telegram.
submitted by CoinjoyAssistant to CryptoCurrencies [link] [comments]

Crypto Weekly News — October, 16

What important crypto events happened last week?

Cryptocurrencies

Tether To Replace Ethereum As The Second Largest Market Capitalization. According to Bloomberg analysts, the Tether (USDT) stablecoin may take the second place in the rating of the largest digital currencies in 2021. Thus, Tether will displace Ether (ETH) at this position. At the moment, the capitalization of ETH and Tether is about $42.066 billion and $15.737 billion, respectively. Recently, stablecoin knocked the XRP token from the third place in the ranking of the most popular cryptocurrencies.
DeFi Token Maker Sets New TVL All-Time High As Crypto Market Takes Pause.
Maker, one of the first tokens, continues to grow, setting new all-highs in total locked away value, which indicates the core stability of the DeFi markets.
Bitcoin SV Will Sponsor The Cambridge University Metanet Society.
Bitcoin Association, a Swiss-based organization, working to advance business with the Bitcoin SV blockchain, has announced its intention to sponsor the Cambridge University Metanet Society for the second year in a row. The company hopes that this will help nurture a new generation of Digital Finance professionals and bring together the brightest minds in developing new projects.

Projects And Updates

Ethereum Foundation Introduces New Smart Contract Language ‘Fe’ For The Ecosystem.
The Ethereum ecosystem has introduced a new language for writing smart contracts named Fe, which was announced by the software engineer of the Ethereum Foundation Christoph Burgdorf. Today, most applications on Ethereum are written in the Solidity language. The company believes that having additional programming options will have a positive impact on the development of the ecosystem.
Gate.io Unveils Hardware Crypto Wallet With Fingerprint Authorization.
Gate.io Exchange announces a new hardware Wallet S1 with fingerprint recognition technology. Using biometrics will both better protect the user's keys and make it easier to work with them. Initially, for the China market, it will be available in other countries in the following months.
Ethereum 2.0 Gets Closer: Zinken Testnet Successfully Launched.
The developers of Ethereum started up the final test network Zinken before moving to the actual launching main ETH 2.0 network. According to Danny Ryan, lead coordinator for Etherium 2.0, the test genesis process went successfully. The previous "dress rehearsal" in the Spadina testnet failed primarily due to incorrect support for the latest version of the Prysm client.
Nervos Integrates With HedgeTrade To Enable Community Trading Predictions.
HedgeTrade’s community-driven predictions platform now supports CKB, the native token of an open-source public blockchain project Nervos. The collaboration will provide Nervos with unique analytical tools and will allow HedgeTrade to attract a new audience.
Binance Announces Adding Support For MetaMask Wallet On Its Panama Bridge Service.
Binance's Panama Bridge Service, designed to organize compatibility with other blockchains, added support for MetaMask, Ethereum browser wallet.
Solana Announces Ethereum Cross-Chain Bridge ‘Wormhole’.
The Solana smart contract platform has announced the upcoming launch of a bridge for Ethereum ERC-20 tokens called Wormhole. The bridge will allow users to transfer funds between blockchains, directly converting ERC-20 tokens to the corresponding SPL Solana standard.

Hacking

New Zealand Man Charged With Money Laundering Via Crypto And Luxury Cars.
A 40-year-old man from Auckland, New Zealand, is accused of money laundering through the purchase of cryptocurrencies and expensive cars, reports NZHerald. The man, whose identity is not disclosed, faces 30 charges. It is alleged that he received New Zealand dollars (NZD) to buy cryptocurrencies "as part of transactions that involve money laundering".

Mass Adoption

Swipe Now Supports Samsung Pay For Its Visa Cardholders In The US.
Swipe makes life easier for their Samsung and Visa users, by adding the feature of pay with Samsung Pay App. This integration is available to all residents of the United States, excepting those living in New York.

People

Coinbase CCO, Jeff Horowitz Is About To Exit The Crypto Exchange.
CCO of Coinbase exchange, Jeff Horowitz, is leaving his post. The exact reasons weren't revealed, but Horowitz's colleagues pointed out that his retirement from Coinbase is not related to the recent statement of the exchange's CEO, Brian Armstrong. According to the new mission of Coinbase, the workers can't make political and social discussions if they are not related to the cryptocurrency industry. About 5% of employees who disagree with the new company policy chose to leave their workplace and receive compensation.
Jack Dorsey’s Square Inc Invests $50 Million In Bitcoin.
Jack Dorsey's Square payment company announced the purchase of $50 million worth of Bitcoins. Having made such a massive investment, Dorcey continues to place big bets on the digital currency, which he says will become commonly used over the next decade.
That’s all for now! For more details follow us on Twitter, subscribe to our YouTube channel, join our Telegram.
submitted by CoinjoyAssistant to usdt [link] [comments]

Crypto Weekly News — October, 16

What important crypto events happened last week?

Cryptocurrencies

Tether To Replace Ethereum As The Second Largest Market Capitalization. According to Bloomberg analysts, the Tether (USDT) stablecoin may take the second place in the rating of the largest digital currencies in 2021. Thus, Tether will displace Ether (ETH) at this position. At the moment, the capitalization of ETH and Tether is about $42.066 billion and $15.737 billion, respectively. Recently, stablecoin knocked the XRP token from the third place in the ranking of the most popular cryptocurrencies.
DeFi Token Maker Sets New TVL All-Time High As Crypto Market Takes Pause.
Maker, one of the first tokens, continues to grow, setting new all-highs in total locked away value, which indicates the core stability of the DeFi markets.
Bitcoin SV Will Sponsor The Cambridge University Metanet Society.
Bitcoin Association, a Swiss-based organization, working to advance business with the Bitcoin SV blockchain, has announced its intention to sponsor the Cambridge University Metanet Society for the second year in a row. The company hopes that this will help nurture a new generation of Digital Finance professionals and bring together the brightest minds in developing new projects.

Projects And Updates

Ethereum Foundation Introduces New Smart Contract Language ‘Fe’ For The Ecosystem.
The Ethereum ecosystem has introduced a new language for writing smart contracts named Fe, which was announced by the software engineer of the Ethereum Foundation Christoph Burgdorf. Today, most applications on Ethereum are written in the Solidity language. The company believes that having additional programming options will have a positive impact on the development of the ecosystem.
Gate.io Unveils Hardware Crypto Wallet With Fingerprint Authorization.
Gate.io Exchange announces a new hardware Wallet S1 with fingerprint recognition technology. Using biometrics will both better protect the user's keys and make it easier to work with them. Initially, for the China market, it will be available in other countries in the following months.
Ethereum 2.0 Gets Closer: Zinken Testnet Successfully Launched.
The developers of Ethereum started up the final test network Zinken before moving to the actual launching main ETH 2.0 network. According to Danny Ryan, lead coordinator for Etherium 2.0, the test genesis process went successfully. The previous "dress rehearsal" in the Spadina testnet failed primarily due to incorrect support for the latest version of the Prysm client.
Nervos Integrates With HedgeTrade To Enable Community Trading Predictions.
HedgeTrade’s community-driven predictions platform now supports CKB, the native token of an open-source public blockchain project Nervos. The collaboration will provide Nervos with unique analytical tools and will allow HedgeTrade to attract a new audience.
Binance Announces Adding Support For MetaMask Wallet On Its Panama Bridge Service.
Binance's Panama Bridge Service, designed to organize compatibility with other blockchains, added support for MetaMask, Ethereum browser wallet.
Solana Announces Ethereum Cross-Chain Bridge ‘Wormhole’.
The Solana smart contract platform has announced the upcoming launch of a bridge for Ethereum ERC-20 tokens called Wormhole. The bridge will allow users to transfer funds between blockchains, directly converting ERC-20 tokens to the corresponding SPL Solana standard.

Hacking

New Zealand Man Charged With Money Laundering Via Crypto And Luxury Cars.
A 40-year-old man from Auckland, New Zealand, is accused of money laundering through the purchase of cryptocurrencies and expensive cars, reports NZHerald. The man, whose identity is not disclosed, faces 30 charges. It is alleged that he received New Zealand dollars (NZD) to buy cryptocurrencies "as part of transactions that involve money laundering".

Mass Adoption

Swipe Now Supports Samsung Pay For Its Visa Cardholders In The US.
Swipe makes life easier for their Samsung and Visa users, by adding the feature of pay with Samsung Pay App. This integration is available to all residents of the United States, excepting those living in New York.

People

Coinbase CCO, Jeff Horowitz Is About To Exit The Crypto Exchange.
CCO of Coinbase exchange, Jeff Horowitz, is leaving his post. The exact reasons weren't revealed, but Horowitz's colleagues pointed out that his retirement from Coinbase is not related to the recent statement of the exchange's CEO, Brian Armstrong. According to the new mission of Coinbase, the workers can't make political and social discussions if they are not related to the cryptocurrency industry. About 5% of employees who disagree with the new company policy chose to leave their workplace and receive compensation.
Jack Dorsey’s Square Inc Invests $50 Million In Bitcoin.
Jack Dorsey's Square payment company announced the purchase of $50 million worth of Bitcoins. Having made such a massive investment, Dorcey continues to place big bets on the digital currency, which he says will become commonly used over the next decade.
That’s all for now! For more details follow us on Twitter, subscribe to our YouTube channel, join our Telegram.
submitted by CoinjoyAssistant to defi [link] [comments]

What you need to know about Blockchain

What you need to know about Blockchain
Category and version
The Blockchain system is divided into 3 main categories:
Public: Anyone has the right to read and write data on Blockchain. The process of validating transactions on this Blockchain requires thousands or tens of thousands of nodes. Therefore, to attack this Blockchain system is impossible because the cost is quite high. For example: Bitcoin, Ethereum ...
Private: User is only allowed to read data, not write because this belongs to an absolutely trusted third party. This organization may or may not allow users to read data under certain circumstances. The third party has the sole discretion to decide any changes on the Blockchain. Since this is a Private Blockchain, the transaction confirmation time is quite fast because only a small number of devices are required to validate the transaction. For example, Ripple is a Private Blockchain, this system allows 20% of the nodes to be fraudulent and only the remaining 80% to operate stably.
Permissioned: Also known as Consortium, a form of Private but adds a certain number of features, combining "belief" when participating in Public and "absolute trust" when participating in Private. For example: Banks or joint venture financial institutions will use Blockchain for themselves. I believe this site can give you more knowledge: Bitcoin exchange.

https://preview.redd.it/ve887fn2z8t51.jpg?width=960&format=pjpg&auto=webp&s=dce795f360c03db058e78c882781663feafc6080
In the present, Blockchain is divided into 3 versions:
Blockchain 1.0 - Currency and Payment: The main application of this version is cryptocurrency: including currency conversion, remittances and the creation of digital payment systems. This is also the area most familiar to us that sometimes quite a lot of people mistake Bitcoin and Blockchain as one.
Blockchain 2.0 - Finance and Market: Application of financial and banking processing: to scale up Blockchain, bring in financial and market applications. Assets include stocks, checks, debt, title and anything related to an agreement or a contract.
Blockchain 3.0 - Designing and Monitoring Operations: Bringing Blockchain beyond financial borders, and into fields like education, government, health, and the arts. In these areas, there will be multiple types like physical, digital or human in nature.
Blockchain consensus algorithm
The consensus mechanism in Blockchain can be understood as the way that Byzantine generals can reach consensus to win together. The following are common types of consensus mechanisms:
Proof of Work: Common in Bitcoin, Ethereum, Litecoin, Dogecoin, and most cryptocurrencies. Consumes quite a lot of electrical energy.
Proof of Stake: Popular in Decred, Peercoin and in the future, Ethereum and many other cryptocurrencies. More decentralized, less energy consuming and not easily intimidated.
Delegated Proof-of-Stake: Popular in Steemit, EOS, BitShares. Cheap transaction costs; extendable; high energy efficiency. However, there is still a bit of focus because this algorithm selects a trusted person to authorize.
Proof of Authority: This is a centralized model commonly seen in POA.Network, Ethereum Kovan testnet. High performance, good scalability.
Proof-of-Weight: Popular in Algorand, Filecoin. Customizable and good scalability. However, the development process will be a big challenge.
Byzantine Fault Tolerance: Popular in Hyperledger, Stellar, Dispatch, and Ripple. High productivity; low cost; extendable. However, it is still not completely reliable. This algorithm has 2 versions:
Practical Byzantine Fault Tolerance (Anti-fraud consensus / Byzantine General surrounded Blockchain in practice)
Federated Byzantine Agreement (Byzantine Alliance by Consensus)
Directed Acyclic Graphs (Topological Algorithm): Commonly found in Iota (Tangle technology), Hashgraph, Raiblocks / Nano (Block-lattice technology), is a competitor of Blockchain.
Why is Blockchain supported?
The 3 main properties of Blockchain technology that have helped it to achieve a widespread welcome are:
Decentralized (decentralized)
transparent
Invariant
Decentralization
Before Bitcoin and Blockchain came along, we were used to centralized services. Specifically, you have a centralized entity that stores all of the data, and you must interact with this entity to retrieve the requested information.
Another example of a centralized system is banking. They store all your money, and the only way you can use it is through the bank.
The traditional client-server model is a good example of centralization:
What is Blockchain technology?
When you go to Google to search for something, you will send a query to the server and the results will return to you with the relevant information. It's also the simple client-server model.
Although centralized systems have been so familiar to us for many years, they do have some flaws:
submitted by Ill_Preparation_2814 to u/Ill_Preparation_2814 [link] [comments]

Scaling Reddit Community Points with Arbitrum Rollup: a piece of cake

Scaling Reddit Community Points with Arbitrum Rollup: a piece of cake
https://preview.redd.it/b80c05tnb9e51.jpg?width=2550&format=pjpg&auto=webp&s=850282c1a3962466ed44f73886dae1c8872d0f31
Submitted for consideration to The Great Reddit Scaling Bake-Off
Baked by the pastry chefs at Offchain Labs
Please send questions or comments to [[email protected] ](mailto:[email protected])
1. Overview
We're excited to submit Arbitrum Rollup for consideration to The Great Reddit Scaling Bake-Off. Arbitrum Rollup is the only Ethereum scaling solution that supports arbitrary smart contracts without compromising on Ethereum's security or adding points of centralization. For Reddit, this means that Arbitrum can not only scale the minting and transfer of Community Points, but it can foster a creative ecosystem built around Reddit Community Points enabling points to be used in a wide variety of third party applications. That's right -- you can have your cake and eat it too!
Arbitrum Rollup isn't just Ethereum-style. Its Layer 2 transactions are byte-for-byte identical to Ethereum, which means Ethereum users can continue to use their existing addresses and wallets, and Ethereum developers can continue to use their favorite toolchains and development environments out-of-the-box with Arbitrum. Coupling Arbitrum’s tooling-compatibility with its trustless asset interoperability, Reddit not only can scale but can onboard the entire Ethereum community at no cost by giving them the same experience they already know and love (well, certainly know).
To benchmark how Arbitrum can scale Reddit Community Points, we launched the Reddit contracts on an Arbitrum Rollup chain. Since Arbitrum provides full Solidity support, we didn't have to rewrite the Reddit contracts or try to mimic their functionality using an unfamiliar paradigm. Nope, none of that. We launched the Reddit contracts unmodified on Arbitrum Rollup complete with support for minting and distributing points. Like every Arbitrum Rollup chain, the chain included a bridge interface in which users can transfer Community Points or any other asset between the L1 and L2 chains. Arbitrum Rollup chains also support dynamic contract loading, which would allow third-party developers to launch custom ecosystem apps that integrate with Community Points on the very same chain that runs the Reddit contracts.
1.1 Why Ethereum
Perhaps the most exciting benefit of distributing Community Points using a blockchain is the ability to seamlessly port points to other applications and use them in a wide variety of contexts. Applications may include simple transfers such as a restaurant that allows Redditors to spend points on drinks. Or it may include complex smart contracts -- such as placing Community Points as a wager for a multiparty game or as collateral in a financial contract.
The common denominator between all of the fun uses of Reddit points is that it needs a thriving ecosystem of both users and developers, and the Ethereum blockchain is perhaps the only smart contract platform with significant adoption today. While many Layer 1 blockchains boast lower cost or higher throughput than the Ethereum blockchain, more often than not, these attributes mask the reality of little usage, weaker security, or both.
Perhaps another platform with significant usage will rise in the future. But today, Ethereum captures the mindshare of the blockchain community, and for Community Points to provide the most utility, the Ethereum blockchain is the natural choice.
1.2 Why Arbitrum
While Ethereum's ecosystem is unmatched, the reality is that fees are high and capacity is too low to support the scale of Reddit Community Points. Enter Arbitrum. Arbitrum Rollup provides all of the ecosystem benefits of Ethereum, but with orders of magnitude more capacity and at a fraction of the cost of native Ethereum smart contracts. And most of all, we don't change the experience from users. They continue to use the same wallets, addresses, languages, and tools.
Arbitrum Rollup is not the only solution that can scale payments, but it is the only developed solution that can scale both payments and arbitrary smart contracts trustlessly, which means that third party users can build highly scalable add-on apps that can be used without withdrawing money from the Rollup chain. If you believe that Reddit users will want to use their Community Points in smart contracts--and we believe they will--then it makes the most sense to choose a single scaling solution that can support the entire ecosystem, eliminating friction for users.
We view being able to run smart contracts in the same scaling solution as fundamentally critical since if there's significant demand in running smart contracts from Reddit's ecosystem, this would be a load on Ethereum and would itself require a scaling solution. Moreover, having different scaling solutions for the minting/distribution/spending of points and for third party apps would be burdensome for users as they'd have to constantly shuffle their Points back and forth.
2. Arbitrum at a glance
Arbitrum Rollup has a unique value proposition as it offers a combination of features that no other scaling solution achieves. Here we highlight its core attributes.
Decentralized. Arbitrum Rollup is as decentralized as Ethereum. Unlike some other Layer 2 scaling projects, Arbitrum Rollup doesn't have any centralized components or centralized operators who can censor users or delay transactions. Even in non-custodial systems, centralized components provide a risk as the operators are generally incentivized to increase their profit by extracting rent from users often in ways that severely degrade user experience. Even if centralized operators are altruistic, centralized components are subject to hacking, coercion, and potential liability.
Massive Scaling. Arbitrum achieves order of magnitude scaling over Ethereum's L1 smart contracts. Our software currently supports 453 transactions-per-second for basic transactions (at 1616 Ethereum gas per tx). We have a lot of room left to optimize (e.g. aggregating signatures), and over the next several months capacity will increase significantly. As described in detail below, Arbitrum can easily support and surpass Reddit's anticipated initial load, and its capacity will continue to improve as Reddit's capacity needs grow.
Low cost. The cost of running Arbitrum Rollup is quite low compared to L1 Ethereum and other scaling solutions such as those based on zero-knowledge proofs. Layer 2 fees are low, fixed, and predictable and should not be overly burdensome for Reddit to cover. Nobody needs to use special equipment or high-end machines. Arbitrum requires validators, which is a permissionless role that can be run on any reasonable on-line machine. Although anybody can act as a validator, in order to protect against a “tragedy of the commons” and make sure reputable validators are participating, we support a notion of “invited validators” that are compensated for their costs. In general, users pay (low) fees to cover the invited validators’ costs, but we imagine that Reddit may cover this cost for its users. See more on the costs and validator options below.
Ethereum Developer Experience. Not only does Arbitrum support EVM smart contracts, but the developer experience is identical to that of L1 Ethereum contracts and fully compatible with Ethereum tooling. Developers can port existing Solidity apps or write new ones using their favorite and familiar toolchains (e.g. Truffle, Buidler). There are no new languages or coding paradigms to learn.
Ethereum wallet compatibility. Just as in Ethereum, Arbitrum users need only hold keys, but do not have to store any coin history or additional data to protect or access their funds. Since Arbitrum transactions are semantically identical to Ethereum L1 transactions, existing Ethereum users can use their existing Ethereum keys with their existing wallet software such as Metamask.
Token interoperability. Users can easily transfer their ETH, ERC-20 and ERC-721 tokens between Ethereum and the Arbitrum Rollup chain. As we explain in detail below, it is possible to mint tokens in L2 that can subsequently be withdrawn and recognized by the L1 token contract.
Fast finality. Transactions complete with the same finality time as Ethereum L1 (and it's possible to get faster finality guarantees by trading away trust assumptions; see the Arbitrum Rollup whitepaper for details).
Non-custodial. Arbitrum Rollup is a non-custodial scaling solution, so users control their funds/points and neither Reddit nor anyone else can ever access or revoke points held by users.
Censorship Resistant. Since it's completely decentralized, and the Arbitrum protocol guarantees progress trustlessly, Arbitrum Rollup is just as censorship-proof as Ethereum.
Block explorer. The Arbitrum Rollup block explorer allows users to view and analyze transactions on the Rollup chain.
Limitations
Although this is a bake-off, we're not going to sugar coat anything. Arbitrum Rollup, like any Optimistic Rollup protocol, does have one limitation, and that's the delay on withdrawals.
As for the concrete length of the delay, we've done a good deal of internal modeling and have blogged about this as well. Our current modeling suggests a 3-hour delay is sufficient (but as discussed in the linked post there is a tradeoff space between the length of the challenge period and the size of the validators’ deposit).
Note that this doesn't mean that the chain is delayed for three hours. Arbitrum Rollup supports pipelining of execution, which means that validators can keep building new states even while previous ones are “in the pipeline” for confirmation. As the challenge delays expire for each update, a new state will be confirmed (read more about this here).
So activity and progress on the chain are not delayed by the challenge period. The only thing that's delayed is the consummation of withdrawals. Recall though that any single honest validator knows immediately (at the speed of L1 finality) which state updates are correct and can guarantee that they will eventually be confirmed, so once a valid withdrawal has been requested on-chain, every honest party knows that the withdrawal will definitely happen. There's a natural place here for a liquidity market in which a validator (or someone who trusts a validator) can provide withdrawal loans for a small interest fee. This is a no-risk business for them as they know which withdrawals will be confirmed (and can force their confirmation trustlessly no matter what anyone else does) but are just waiting for on-chain finality.
3. The recipe: How Arbitrum Rollup works
For a description of the technical components of Arbitrum Rollup and how they interact to create a highly scalable protocol with a developer experience that is identical to Ethereum, please refer to the following documents:
Arbitrum Rollup Whitepaper
Arbitrum academic paper (describes a previous version of Arbitrum)
4. Developer docs and APIs
For full details about how to set up and interact with an Arbitrum Rollup chain or validator, please refer to our developer docs, which can be found at https://developer.offchainlabs.com/.
Note that the Arbitrum version described on that site is older and will soon be replaced by the version we are entering in Reddit Bake-Off, which is still undergoing internal testing before public release.
5. Who are the validators?
As with any Layer 2 protocol, advancing the protocol correctly requires at least one validator (sometimes called block producers) that is honest and available. A natural question is: who are the validators?
Recall that the validator set for an Arbitrum chain is open and permissionless; anyone can start or stop validating at will. (A useful analogy is to full nodes on an L1 chain.) But we understand that even though anyone can participate, Reddit may want to guarantee that highly reputable nodes are validating their chain. Reddit may choose to validate the chain themselves and/or hire third-party validators.To this end, we have begun building a marketplace for validator-for-hire services so that dapp developers can outsource validation services to reputable nodes with high up-time. We've announced a partnership in which Chainlink nodes will provide Arbitrum validation services, and we expect to announce more partnerships shortly with other blockchain infrastructure providers.
Although there is no requirement that validators are paid, Arbitrum’s economic model tracks validators’ costs (e.g. amount of computation and storage) and can charge small fees on user transactions, using a gas-type system, to cover those costs. Alternatively, a single party such as Reddit can agree to cover the costs of invited validators.
6. Reddit Contract Support
Since Arbitrum contracts and transactions are byte-for-byte compatible with Ethereum, supporting the Reddit contracts is as simple as launching them on an Arbitrum chain.
Minting. Arbitrum Rollup supports hybrid L1/L2 tokens which can be minted in L2 and then withdrawn onto the L1. An L1 contract at address A can make a special call to the EthBridge which deploys a "buddy contract" to the same address A on an Arbitrum chain. Since it's deployed at the same address, users can know that the L2 contract is the authorized "buddy" of the L1 contract on the Arbitrum chain.
For minting, the L1 contract is a standard ERC-20 contract which mints and burns tokens when requested by the L2 contract. It is paired with an ERC-20 contract in L2 which mints tokens based on whatever programmer provided minting facility is desired and burns tokens when they are withdrawn from the rollup chain. Given this base infrastructure, Arbitrum can support any smart contract based method for minting tokens in L2, and indeed we directly support Reddit's signature/claim based minting in L2.
Batch minting. What's better than a mint cookie? A whole batch! In addition to supporting Reddit’s current minting/claiming scheme, we built a second minting design, which we believe outperforms the signature/claim system in many scenarios.
In the current system, Reddit periodically issues signed statements to users, who then take those statements to the blockchain to claim their tokens. An alternative approach would have Reddit directly submit the list of users/amounts to the blockchain and distribute the tokens to the users without the signature/claim process.
To optimize the cost efficiency of this approach, we designed an application-specific compression scheme to minimize the size of the batch distribution list. We analyzed the data from Reddit's previous distributions and found that the data is highly compressible since token amounts are small and repeated, and addresses appear multiple times. Our function groups transactions by size, and replaces previously-seen addresses with a shorter index value. We wrote client code to compress the data, wrote a Solidity decompressing function, and integrated that function into Reddit’s contract running on Arbitrum.
When we ran the compression function on the previous Reddit distribution data, we found that we could compress batched minting data down to to 11.8 bytes per minting event (averaged over a 6-month trace of Reddit’s historical token grants)compared with roughly 174 bytes of on-chain data needed for the signature claim approach to minting (roughly 43 for an RLP-encoded null transaction + 65 for Reddit's signature + 65 for the user's signature + roughly 8 for the number of Points) .
The relative benefit of the two approaches with respect to on-chain call data cost depends on the percentage of users that will actually claim their tokens on chain. With the above figures, batch minting will be cheaper if roughly 5% of users redeem their claims. We stress that our compression scheme is not Arbitrum-specific and would be beneficial in any general-purpose smart contract platform.
8. Benchmarks and costs
In this section, we give the full costs of operating the Reddit contracts on an Arbitrum Rollup chain including the L1 gas costs for the Rollup chain, the costs of computation and storage for the L2 validators as well as the capital lockup requirements for staking.
Arbitrum Rollup is still on testnet, so we did not run mainnet benchmarks. Instead, we measured the L1 gas cost and L2 workload for Reddit operations on Arbitrum and calculated the total cost assuming current Ethereum gas prices. As noted below in detail, our measurements do not assume that Arbitrum is consuming the entire capacity of Ethereum. We will present the details of our model now, but for full transparency you can also play around with it yourself and adjust the parameters, by copying the spreadsheet found here.
Our cost model is based on measurements of Reddit’s contracts, running unmodified (except for the addition of a batch minting function) on Arbitrum Rollup on top of Ethereum.
On the distribution of transactions and frequency of assertions. Reddit's instructions specify the following minimum parameters that submissions should support:
Over a 5 day period, your scaling PoC should be able to handle:
  • 100,000 point claims (minting & distributing points)
  • 25,000 subscriptions
  • 75,000 one-off points burning
  • 100,000 transfers
We provide the full costs of operating an Arbitrum Rollup chain with this usage under the assumption that tokens are minted or granted to users in batches, but other transactions are uniformly distributed over the 5 day period. Unlike some other submissions, we do not make unrealistic assumptions that all operations can be submitted in enormous batches. We assume that batch minting is done in batches that use only a few percent on an L1 block’s gas, and that other operations come in evenly over time and are submitted in batches, with one batch every five minutes to keep latency reasonable. (Users are probably already waiting for L1 finality, which takes at least that long to achieve.)
We note that assuming that there are only 300,000 transactions that arrive uniformly over the 5 day period will make our benchmark numbers lower, but we believe that this will reflect the true cost of running the system. To see why, say that batches are submitted every five minutes (20 L1 blocks) and there's a fixed overhead of c bytes of calldata per batch, the cost of which will get amortized over all transactions executed in that batch. Assume that each individual transaction adds a marginal cost of t. Lastly assume the capacity of the scaling system is high enough that it can support all of Reddit's 300,000 transactions within a single 20-block batch (i.e. that there is more than c + 300,000*t byes of calldata available in 20 blocks).
Consider what happens if c, the per-batch overhead, is large (which it is in some systems, but not in Arbitrum). In the scenario that transactions actually arrive at the system's capacity and each batch is full, then c gets amortized over 300,000 transactions. But if we assume that the system is not running at capacity--and only receives 300,000 transactions arriving uniformly over 5 days-- then each 20-block assertion will contain about 200 transactions, and thus each transaction will pay a nontrivial cost due to c.
We are aware that other proposals presented scaling numbers assuming that 300,000 transactions arrived at maximum capacity and was executed in a single mega-transaction, but according to our estimates, for at least one such report, this led to a reported gas price that was 2-3 orders of magnitude lower than it would have been assuming uniform arrival. We make more realistic batching assumptions, and we believe Arbitrum compares well when batch sizes are realistic.
Our model. Our cost model includes several sources of cost:
  • L1 gas costs: This is the cost of posting transactions as calldata on the L1 chain, as well as the overhead associated with each batch of transactions, and the L1 cost of settling transactions in the Arbitrum protocol.
  • Validator’s staking costs: In normal operation, one validator will need to be staked. The stake is assumed to be 0.2% of the total value of the chain (which is assumed to be $1 per user who is eligible to claim points). The cost of staking is the interest that could be earned on the money if it were not staked.
  • Validator computation and storage: Every validator must do computation to track the chain’s processing of transactions, and must maintain storage to keep track of the contracts’ EVM storage. The cost of computation and storage are estimated based on measurements, with the dollar cost of resources based on Amazon Web Services pricing.
It’s clear from our modeling that the predominant cost is for L1 calldata. This will probably be true for any plausible rollup-based system.
Our model also shows that Arbitrum can scale to workloads much larger than Reddit’s nominal workload, without exhausting L1 or L2 resources. The scaling bottleneck will ultimately be calldata on the L1 chain. We believe that cost could be reduced substantially if necessary by clever encoding of data. (In our design any compression / decompression of L2 transaction calldata would be done by client software and L2 programs, never by an L1 contract.)
9. Status of Arbitrum Rollup
Arbitrum Rollup is live on Ethereum testnet. All of the code written to date including everything included in the Reddit demo is open source and permissively licensed under the Apache V2 license. The first testnet version of Arbitrum Rollup was released on testnet in February. Our current internal version, which we used to benchmark the Reddit contracts, will be released soon and will be a major upgrade.
Both the Arbitrum design as well as the implementation are heavily audited by independent third parties. The Arbitrum academic paper was published at USENIX Security, a top-tier peer-reviewed academic venue. For the Arbitrum software, we have engaged Trail of Bits for a security audit, which is currently ongoing, and we are committed to have a clean report before launching on Ethereum mainnet.
10. Reddit Universe Arbitrum Rollup Chain
The benchmarks described in this document were all measured using the latest internal build of our software. When we release the new software upgrade publicly we will launch a Reddit Universe Arbitrum Rollup chain as a public demo, which will contain the Reddit contracts as well as a Uniswap instance and a Connext Hub, demonstrating how Community Points can be integrated into third party apps. We will also allow members of the public to dynamically launch ecosystem contracts. We at Offchain Labs will cover the validating costs for the Reddit Universe public demo.
If the folks at Reddit would like to evaluate our software prior to our public demo, please email us at [email protected] and we'd be more than happy to provide early access.
11. Even more scaling: Arbitrum Sidechains
Rollups are an excellent approach to scaling, and we are excited about Arbitrum Rollup which far surpasses Reddit's scaling needs. But looking forward to Reddit's eventual goal of supporting hundreds of millions of users, there will likely come a time when Reddit needs more scaling than any Rollup protocol can provide.
While Rollups greatly reduce costs, they don't break the linear barrier. That is, all transactions have an on-chain footprint (because all calldata must be posted on-chain), albeit a far smaller one than on native Ethereum, and the L1 limitations end up being the bottleneck for capacity and cost. Since Ethereum has limited capacity, this linear use of on-chain resources means that costs will eventually increase superlinearly with traffic.
The good news is that we at Offchain Labs have a solution in our roadmap that can satisfy this extreme-scaling setting as well: Arbitrum AnyTrust Sidechains. Arbitrum Sidechains are similar to Arbitrum Rollup, but deviate in that they name a permissioned set of validators. When a chain’s validators agree off-chain, they can greatly reduce the on-chain footprint of the protocol and require almost no data to be put on-chain. When validators can't reach unanimous agreement off-chain, the protocol reverts to Arbitrum Rollup. Technically, Arbitrum Sidechains can be viewed as a hybrid between state channels and Rollup, switching back and forth as necessary, and combining the performance and cost that state channels can achieve in the optimistic case, with the robustness of Rollup in other cases. The core technical challenge is how to switch seamlessly between modes and how to guarantee that security is maintained throughout.
Arbitrum Sidechains break through this linear barrier, while still maintaining a high level of security and decentralization. Arbitrum Sidechains provide the AnyTrust guarantee, which says that as long as any one validator is honest and available (even if you don't know which one will be), the L2 chain is guaranteed to execute correctly according to its code and guaranteed to make progress. Unlike in a state channel, offchain progress does not require unanimous consent, and liveness is preserved as long as there is a single honest validator.
Note that the trust model for Arbitrum Sidechains is much stronger than for typical BFT-style chains which introduce a consensus "voting" protocols among a small permissioned group of validators. BFT-based protocols require a supermajority (more than 2/3) of validators to agree. In Arbitrum Sidechains, by contrast, all you need is a single honest validator to achieve guaranteed correctness and progress. Notice that in Arbitrum adding validators strictly increases security since the AnyTrust guarantee provides correctness as long as any one validator is honest and available. By contrast, in BFT-style protocols, adding nodes can be dangerous as a coalition of dishonest nodes can break the protocol.
Like Arbitrum Rollup, the developer and user experiences for Arbitrum Sidechains will be identical to that of Ethereum. Reddit would be able to choose a large and diverse set of validators, and all that they would need to guarantee to break through the scaling barrier is that a single one of them will remain honest.
We hope to have Arbitrum Sidechains in production in early 2021, and thus when Reddit reaches the scale that surpasses the capacity of Rollups, Arbitrum Sidechains will be waiting and ready to help.
While the idea to switch between channels and Rollup to get the best of both worlds is conceptually simple, getting the details right and making sure that the switch does not introduce any attack vectors is highly non-trivial and has been the subject of years of our research (indeed, we were working on this design for years before the term Rollup was even coined).
12. How Arbitrum compares
We include a comparison to several other categories as well as specific projects when appropriate. and explain why we believe that Arbitrum is best suited for Reddit's purposes. We focus our attention on other Ethereum projects.
Payment only Rollups. Compared to Arbitrum Rollup, ZK-Rollups and other Rollups that only support token transfers have several disadvantages:
  • As outlined throughout the proposal, we believe that the entire draw of Ethereum is in its rich smart contracts support which is simply not achievable with today's zero-knowledge proof technology. Indeed, scaling with a ZK-Rollup will add friction to the deployment of smart contracts that interact with Community Points as users will have to withdraw their coins from the ZK-Rollup and transfer them to a smart contract system (like Arbitrum). The community will be best served if Reddit builds on a platform that has built-in, frictionless smart-contract support.
  • All other Rollup protocols of which we are aware employ a centralized operator. While it's true that users retain custody of their coins, the centralized operator can often profit from censoring, reordering, or delaying transactions. A common misconception is that since they're non-custodial protocols, a centralized sequencer does not pose a risk but this is incorrect as the sequencer can wreak havoc or shake down users for side payments without directly stealing funds.
  • Sidechain type protocols can eliminate some of these issues, but they are not trustless. Instead, they require trust in some quorum of a committee, often requiring two-third of the committee to be honest, compared to rollup protocols like Arbitrum that require only a single honest party. In addition, not all sidechain type protocols have committees that are diverse, or even non-centralized, in practice.
  • Plasma-style protocols have a centralized operator and do not support general smart contracts.
13. Concluding Remarks
While it's ultimately up to the judges’ palate, we believe that Arbitrum Rollup is the bakeoff choice that Reddit kneads. We far surpass Reddit's specified workload requirement at present, have much room to optimize Arbitrum Rollup in the near term, and have a clear path to get Reddit to hundreds of millions of users. Furthermore, we are the only project that gives developers and users the identical interface as the Ethereum blockchain and is fully interoperable and tooling-compatible, and we do this all without any new trust assumptions or centralized components.
But no matter how the cookie crumbles, we're glad to have participated in this bake-off and we thank you for your consideration.
About Offchain Labs
Offchain Labs, Inc. is a venture-funded New York company that spun out of Princeton University research, and is building the Arbitrum platform to usher in the next generation of scalable, interoperable, and compatible smart contracts. Offchain Labs is backed by Pantera Capital, Compound VC, Coinbase Ventures, and others.
Leadership Team
Ed Felten
Ed Felten is Co-founder and Chief Scientist at Offchain Labs. He is on leave from Princeton University, where he is the Robert E. Kahn Professor of Computer Science and Public Affairs. From 2015 to 2017 he served at the White House as Deputy United States Chief Technology Officer and senior advisor to the President. He is an ACM Fellow and member of the National Academy of Engineering. Outside of work, he is an avid runner, cook, and L.A. Dodgers fan.
Steven Goldfeder
Steven Goldfeder is Co-founder and Chief Executive Officer at Offchain Labs. He holds a PhD from Princeton University, where he worked at the intersection of cryptography and cryptocurrencies including threshold cryptography, zero-knowledge proof systems, and post-quantum signatures. He is a co-author of Bitcoin and Cryptocurrency Technologies, the leading textbook on cryptocurrencies, and he has previously worked at Google and Microsoft Research, where he co-invented the Picnic signature algorithm. When not working, you can find Steven spending time with his family, taking a nature walk, or twisting balloons.
Harry Kalodner
Harry Kalodner is Co-founder and Chief Technology Officer at Offchain Labs where he leads the engineering team. Before the company he attended Princeton as a Ph.D candidate where his research explored economics, anonymity, and incentive compatibility of cryptocurrencies, and he also has worked at Apple. When not up at 3:00am writing code, Harry occasionally sleeps.
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Crypto Weekly News — October, 16

What important crypto events happened last week?

Cryptocurrencies

Tether To Replace Ethereum As The Second Largest Market Capitalization. According to Bloomberg analysts, the Tether (USDT) stablecoin may take the second place in the rating of the largest digital currencies in 2021. Thus, Tether will displace Ether (ETH) at this position. At the moment, the capitalization of ETH and Tether is about $42.066 billion and $15.737 billion, respectively. Recently, stablecoin knocked the XRP token from the third place in the ranking of the most popular cryptocurrencies.
DeFi Token Maker Sets New TVL All-Time High As Crypto Market Takes Pause.
Maker, one of the first tokens, continues to grow, setting new all-highs in total locked away value, which indicates the core stability of the DeFi markets.
Bitcoin SV Will Sponsor The Cambridge University Metanet Society.
Bitcoin Association, a Swiss-based organization, working to advance business with the Bitcoin SV blockchain, has announced its intention to sponsor the Cambridge University Metanet Society for the second year in a row. The company hopes that this will help nurture a new generation of Digital Finance professionals and bring together the brightest minds in developing new projects.

Projects And Updates

Ethereum Foundation Introduces New Smart Contract Language ‘Fe’ For The Ecosystem.
The Ethereum ecosystem has introduced a new language for writing smart contracts named Fe, which was announced by the software engineer of the Ethereum Foundation Christoph Burgdorf. Today, most applications on Ethereum are written in the Solidity language. The company believes that having additional programming options will have a positive impact on the development of the ecosystem.
Gate.io Unveils Hardware Crypto Wallet With Fingerprint Authorization.
Gate.io Exchange announces a new hardware Wallet S1 with fingerprint recognition technology. Using biometrics will both better protect the user's keys and make it easier to work with them. Initially, for the China market, it will be available in other countries in the following months.
Ethereum 2.0 Gets Closer: Zinken Testnet Successfully Launched.
The developers of Ethereum started up the final test network Zinken before moving to the actual launching main ETH 2.0 network. According to Danny Ryan, lead coordinator for Etherium 2.0, the test genesis process went successfully. The previous "dress rehearsal" in the Spadina testnet failed primarily due to incorrect support for the latest version of the Prysm client.
Nervos Integrates With HedgeTrade To Enable Community Trading Predictions.
HedgeTrade’s community-driven predictions platform now supports CKB, the native token of an open-source public blockchain project Nervos. The collaboration will provide Nervos with unique analytical tools and will allow HedgeTrade to attract a new audience.
Binance Announces Adding Support For MetaMask Wallet On Its Panama Bridge Service.
Binance's Panama Bridge Service, designed to organize compatibility with other blockchains, added support for MetaMask, Ethereum browser wallet.
Solana Announces Ethereum Cross-Chain Bridge ‘Wormhole’.
The Solana smart contract platform has announced the upcoming launch of a bridge for Ethereum ERC-20 tokens called Wormhole. The bridge will allow users to transfer funds between blockchains, directly converting ERC-20 tokens to the corresponding SPL Solana standard.

Hacking

New Zealand Man Charged With Money Laundering Via Crypto And Luxury Cars.
A 40-year-old man from Auckland, New Zealand, is accused of money laundering through the purchase of cryptocurrencies and expensive cars, reports NZHerald. The man, whose identity is not disclosed, faces 30 charges. It is alleged that he received New Zealand dollars (NZD) to buy cryptocurrencies "as part of transactions that involve money laundering".

Mass Adoption

Swipe Now Supports Samsung Pay For Its Visa Cardholders In The US.
Swipe makes life easier for their Samsung and Visa users, by adding the feature of pay with Samsung Pay App. This integration is available to all residents of the United States, excepting those living in New York.

People

Coinbase CCO, Jeff Horowitz Is About To Exit The Crypto Exchange.
CCO of Coinbase exchange, Jeff Horowitz, is leaving his post. The exact reasons weren't revealed, but Horowitz's colleagues pointed out that his retirement from Coinbase is not related to the recent statement of the exchange's CEO, Brian Armstrong. According to the new mission of Coinbase, the workers can't make political and social discussions if they are not related to the cryptocurrency industry. About 5% of employees who disagree with the new company policy chose to leave their workplace and receive compensation.
Jack Dorsey’s Square Inc Invests $50 Million In Bitcoin.
Jack Dorsey's Square payment company announced the purchase of $50 million worth of Bitcoins. Having made such a massive investment, Dorcey continues to place big bets on the digital currency, which he says will become commonly used over the next decade.
That’s all for now! For more details follow us on Twitter, subscribe to our YouTube channel, join our Telegram.
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LOEx Market Research Report on October 13: BTC fluctuated within the range after rebounding and stabilizing

[Today's Hot Tips]
1. [Researcher of ConsenSys: The creation of the ETH 2.0 beacon chain is expected to be realized within six weeks]
According to Coindesk, a researcher at ConsenSys and ETH 2.0 developer, Ben Edgington, stated that the ETH single-client test network Sapphire, Topaz and Onyx networks have been tested for a long time. The Medalla testnet launched in August currently has more than 50,000 validators participating. Four high-quality, audited and tested clients are expected to run when the beacon chain is released, namely Teku, Lighthouse, Nimbus and Prysm. Ben Edgington revealed that ETH plans to conduct another Zinken testnet test in mid-October. Deposit contracts will be deployed in the next few days. The goal is to achieve the creation of the beacon chain within six weeks.
2. [G7 Group cooperates with IMF, World Bank and BIS to establish central bank digital currency rules]
According to Coindesk, the Group of Seven (G7) countries including Japan, the United States, and Europe stated in a report that it is cooperating with the International Monetary Fund (IMF), the World Bank and the Bank for International Settlements (BIS) to establish central bank digital currency rules . According to the report, by the end of 2022, G7 will complete the research and selection of the regulatory stability framework and CBDC design, technology and experiment.
3. [G7 Draft: Oppose Facebook to launch Libra stablecoin]
According to a G7 draft statement, financial leaders of the seven largest economies (the United States, Canada, Japan, Germany, France, Italy, and the United Kingdom) will oppose Facebook’s launch of the Libra stablecoin at the Tuesday meeting until it is properly regulated.
[Today's market analysis]
Bitcoin (BTC)BTC has been trading sideways since the early hours of the morning, and it has risen around 5 o'clock, reaching a maximum of 11,724 USDT. At around 7 o'clock, it quickly fell and fell to 11,474.17 USDT. Mainstream currencies have been mixed during the day. BTC is currently trading at 11,471.2 USDT in LOEx, a decrease of 0.67% in 24h.
The BTC overnight index strengthened again, with the highest quotation breaking through 11,700 points. The upside from the technical form is still not exhausted, and the target is at least 12,000. There is a short-term rise and fall, which is a technical adjustment, and there must be a top divergence pattern in a small period of 4 hours or less. As a result, the market has a callback. On the daily volume, the index has increased in volume, which is the normal state of volume and price. The market has upside and supplementary volume. There is still demand for short-term from form to volume and price. Major mainstream currencies are still bullish on dips, and bullish near support levels.
In a shock range, it should be the main day to do more on dips under the bullish sentiment in the day, and dominate the short on rallies under the bearish sentiment. Pay close attention to the market sentiment cycle.
Operation suggestions:
Support level: the first support level is 11000 points, the second support level is 10800 integers;
Resistance level: the first resistance level is 11500 points, the second resistance level is 12000 points.
LOEx is registered in Seychelles. It is a global one-stop digital asset service platform with business distribution nodes in 20 regions around the world. It has been exempted from Seychelles and Singapore Monetary Authority (MAS) digital currency trading services. Provide services and secure encrypted digital currency trading environment for 2 million community members in 24 hours.
submitted by LOEXCHANGE to loex [link] [comments]

Syscoin Platform’s Great Reddit Scaling Bake-off Proposal

Syscoin Platform’s Great Reddit Scaling Bake-off Proposal

https://preview.redd.it/rqt2dldyg8e51.jpg?width=1044&format=pjpg&auto=webp&s=777ae9d4fbbb54c3540682b72700fc4ba3de0a44
We are excited to participate and present Syscoin Platform's ideal characteristics and capabilities towards a well-rounded Reddit Community Points solution!
Our scaling solution for Reddit Community Points involves 2-way peg interoperability with Ethereum. This will provide a scalable token layer built specifically for speed and high volumes of simple value transfers at a very low cost, while providing sovereign ownership and onchain finality.
Token transfers scale by taking advantage of a globally sorting mempool that provides for probabilistically secure assumptions of “as good as settled”. The opportunity here for token receivers is to have an app-layer interactivity on the speed/security tradeoff (99.9999% assurance within 10 seconds). We call this Z-DAG, and it achieves high-throughput across a mesh network topology presently composed of about 2,000 geographically dispersed full-nodes. Similar to Bitcoin, however, these nodes are incentivized to run full-nodes for the benefit of network security, through a bonded validator scheme. These nodes do not participate in the consensus of transactions or block validation any differently than other nodes and therefore do not degrade the security model of Bitcoin’s validate first then trust, across every node. Each token transfer settles on-chain. The protocol follows Bitcoin core policies so it has adequate code coverage and protocol hardening to be qualified as production quality software. It shares a significant portion of Bitcoin’s own hashpower through merged-mining.
This platform as a whole can serve token microtransactions, larger settlements, and store-of-value in an ideal fashion, providing probabilistic scalability whilst remaining decentralized according to Bitcoin design. It is accessible to ERC-20 via a permissionless and trust-minimized bridge that works in both directions. The bridge and token platform are currently available on the Syscoin mainnet. This has been gaining recent attention for use by loyalty point programs and stablecoins such as Binance USD.

Solutions

Syscoin Foundation identified a few paths for Reddit to leverage this infrastructure, each with trade-offs. The first provides the most cost-savings and scaling benefits at some sacrifice of token autonomy. The second offers more preservation of autonomy with a more narrow scope of cost savings than the first option, but savings even so. The third introduces more complexity than the previous two yet provides the most overall benefits. We consider the third as most viable as it enables Reddit to benefit even while retaining existing smart contract functionality. We will focus on the third option, and include the first two for good measure.
  1. Distribution, burns and user-to-user transfers of Reddit Points are entirely carried out on the Syscoin network. This full-on approach to utilizing the Syscoin network provides the most scalability and transaction cost benefits of these scenarios. The tradeoff here is distribution and subscription handling likely migrating away from smart contracts into the application layer.
  2. The Reddit Community Points ecosystem can continue to use existing smart contracts as they are used today on the Ethereum mainchain. Users migrate a portion of their tokens to Syscoin, the scaling network, to gain much lower fees, scalability, and a proven base layer, without sacrificing sovereign ownership. They would use Syscoin for user-to-user transfers. Tips redeemable in ten seconds or less, a high-throughput relay network, and onchain settlement at a block target of 60 seconds.
  3. Integration between Matic Network and Syscoin Platform - similar to Syscoin’s current integration with Ethereum - will provide Reddit Community Points with EVM scalability (including the Memberships ERC777 operator) on the Matic side, and performant simple value transfers, robust decentralized security, and sovereign store-of-value on the Syscoin side. It’s “the best of both worlds”. The trade-off is more complex interoperability.

Syscoin + Matic Integration

Matic and Blockchain Foundry Inc, the public company formed by the founders of Syscoin, recently entered a partnership for joint research and business development initiatives. This is ideal for all parties as Matic Network and Syscoin Platform provide complementary utility. Syscoin offers characteristics for sovereign ownership and security based on Bitcoin’s time-tested model, and shares a significant portion of Bitcoin’s own hashpower. Syscoin’s focus is on secure and scalable simple value transfers, trust-minimized interoperability, and opt-in regulatory compliance for tokenized assets rather than scalability for smart contract execution. On the other hand, Matic Network can provide scalable EVM for smart contract execution. Reddit Community Points can benefit from both.
Syscoin + Matic integration is actively being explored by both teams, as it is helpful to Reddit, Ethereum, and the industry as a whole.

Proving Performance & Cost Savings

Our POC focuses on 100,000 on-chain settlements of token transfers on the Syscoin Core blockchain. Transfers and burns perform equally with Syscoin. For POCs related to smart contracts (subscriptions, etc), refer to the Matic Network proposal.
On-chain settlement of 100k transactions was accomplished within roughly twelve minutes, well-exceeding Reddit’s expectation of five days. This was performed using six full-nodes operating on compute-optimized AWS c4.2xlarge instances which were geographically distributed (Virginia, London, Sao Paulo Brazil, Oregon, Singapore, Germany). A higher quantity of settlements could be reached within the same time-frame with more broadcasting nodes involved, or using hosts with more resources for faster execution of the process.
Addresses used: 100,014
The demonstration was executed using this tool. The results can be seen in the following blocks:
612722: https://sys1.bcfn.ca/block/6d47796d043bb4c508d29123e6ae81b051f5e0aaef849f253c8f3a6942a022ce
612723: https://sys1.bcfn.ca/block/8e2077f743461b90f80b4bef502f564933a8e04de97972901f3d65cfadcf1faf
612724: https://sys1.bcfn.ca/block/205436d25b1b499fce44c29567c5c807beaca915b83cc9f3c35b0d76dbb11f6e
612725: https://sys1.bcfn.ca/block/776d1b1a0f90f655a6bbdf559ff5072459cbdc5682d7615ff4b78c00babdc237
612726: https://sys1.bcfn.ca/block/de4df0994253742a1ac8ac9eec8d2a8c8b0a6d72c53d6f3caa29bb6c171b0a6b
612727: https://sys1.bcfn.ca/block/e5e167c52a9decb313fbaadf49a5e34cb490f8084f642a850385476d4ef10d70
612728: https://sys1.bcfn.ca/block/ab64d989edc71890e7b5b8491c20e9a27520dc45a5f7c776d3dae79057f59fe7
612729: https://sys1.bcfn.ca/block/5e8b7ecd0e36f99d07e4ea6e135fc952bf7ec30164ab6f4d1e98b0f2d405df6d
612730: https://sys1.bcfn.ca/block/d395df3d31dde60bbb0bece6bd5b358297da878f0beb96be389e5f0e043580a3
It is important to note that this POC is not focused on Z-DAG. The performance of Z-DAG has been benchmarked within realistic network conditions: Whiteblock’s audit is publicly available. Network latency tests showed an average TPS around 15k with burst capacity up to 61k. Zero-latency control group exhibited ~150k TPS. Mainnet testing of the Z-DAG network is achievable and will require further coordination and additional resources.
Even further optimizations are expected in the upcoming Syscoin Core release which will implement a UTXO model for our token layer bringing further efficiency as well as open the door to additional scaling technology currently under research by our team and academic partners. At present our token layer is account-based, similar to Ethereum. Opt-in compliance structures will also be introduced soon which will offer some positive performance characteristics as well. It makes the most sense to implement these optimizations before performing another benchmark for Z-DAG, especially on the mainnet considering the resources required to stress-test this network.

Cost Savings

Total cost for these 100k transactions: $0.63 USD
See the live fee comparison for savings estimation between transactions on Ethereum and Syscoin. Below is a snapshot at time of writing:
ETH price: $318.55 ETH gas price: 55.00 Gwei ($0.37)
Syscoin price: $0.11
Snapshot of live fee comparison chart
Z-DAG provides a more efficient fee-market. A typical Z-DAG transaction costs 0.0000582 SYS. Tokens can be safely redeemed/re-spent within seconds or allowed to settle on-chain beforehand. The costs should remain about this low for microtransactions.
Syscoin will achieve further reduction of fees and even greater scalability with offchain payment channels for assets, with Z-DAG as a resilience fallback. New payment channel technology is one of the topics under research by the Syscoin development team with our academic partners at TU Delft. In line with the calculation in the Lightning Networks white paper, payment channels using assets with Syscoin Core will bring theoretical capacity for each person on Earth (7.8 billion) to have five on-chain transactions per year, per person, without requiring anyone to enter a fee market (aka “wait for a block”). This exceeds the minimum LN expectation of two transactions per person, per year; one to exist on-chain and one to settle aggregated value.

Tools, Infrastructure & Documentation

Syscoin Bridge

Mainnet Demonstration of Syscoin Bridge with the Basic Attention Token ERC-20
A two-way blockchain interoperability system that uses Simple Payment Verification to enable:
  • Any Standard ERC-20 token to be moved from Ethereum to the Syscoin blockchain as a Syscoin Platform Token (SPT), and back to Ethereum
  • Any SPT to be moved from Syscoin to the Ethereum blockchain as an ERC-20 token, and back to Syscoin

Benefits

  • Permissionless
  • No counterparties involved
  • No trading mechanisms involved
  • No third-party liquidity providers required
  • Cross-chain Fractional Supply - 2-way peg - Token supply maintained globally
  • ERC-20s gain vastly improved transactionality with the Syscoin Token Platform, along with the security of bitcoin-core-compliant PoW.
  • SPTs gain access to all the tooling, applications and capabilities of Ethereum for ERC-20, including smart contracts.
https://preview.redd.it/l8t2m8ldh8e51.png?width=1180&format=png&auto=webp&s=b0a955a0181746dc79aff718bd0bf607d3c3aa23
https://preview.redd.it/26htnxzfh8e51.png?width=1180&format=png&auto=webp&s=d0383d3c2ee836c9f60b57eca35542e9545f741d

Source code

https://github.com/syscoin/?q=sysethereum
Main Subprojects

API

Tools to simplify using Syscoin Bridge as a service with dapps and wallets will be released some time after implementation of Syscoin Core 4.2. These will be based upon the same processes which are automated in the current live Sysethereum Dapp that is functioning with the Syscoin mainnet.

Documentation

Syscoin Bridge & How it Works (description and process flow)
Superblock Validation Battles
HOWTO: Provision the Bridge for your ERC-20
HOWTO: Setup an Agent
Developer & User Diligence

Trade-off

The Syscoin Ethereum Bridge is secured by Agent nodes participating in a decentralized and incentivized model that involves roles of Superblock challengers and submitters. This model is open to participation. The benefits here are trust-minimization, permissionless-ness, and potentially less legal/regulatory red-tape than interop mechanisms that involve liquidity providers and/or trading mechanisms.
The trade-off is that due to the decentralized nature there are cross-chain settlement times of one hour to cross from Ethereum to Syscoin, and three hours to cross from Syscoin to Ethereum. We are exploring ways to reduce this time while maintaining decentralization via zkp. Even so, an “instant bridge” experience could be provided by means of a third-party liquidity mechanism. That option exists but is not required for bridge functionality today. Typically bridges are used with batch value, not with high frequencies of smaller values, and generally it is advantageous to keep some value on both chains for maximum availability of utility. Even so, the cross-chain settlement time is good to mention here.

Cost

Ethereum -> Syscoin: Matic or Ethereum transaction fee for bridge contract interaction, negligible Syscoin transaction fee for minting tokens
Syscoin -> Ethereum: Negligible Syscoin transaction fee for burning tokens, 0.01% transaction fee paid to Bridge Agent in the form of the ERC-20, Matic or Ethereum transaction fee for contract interaction.

Z-DAG

Zero-Confirmation Directed Acyclic Graph is an instant settlement protocol that is used as a complementary system to proof-of-work (PoW) in the confirmation of Syscoin service transactions. In essence, a Z-DAG is simply a directed acyclic graph (DAG) where validating nodes verify the sequential ordering of transactions that are received in their memory pools. Z-DAG is used by the validating nodes across the network to ensure that there is absolute consensus on the ordering of transactions and no balances are overflowed (no double-spends).

Benefits

  • Unique fee-market that is more efficient for microtransaction redemption and settlement
  • Uses decentralized means to enable tokens with value transfer scalability that is comparable or exceeds that of credit card networks
  • Provides high throughput and secure fulfillment even if blocks are full
  • Probabilistic and interactive
  • 99.9999% security assurance within 10 seconds
  • Can serve payment channels as a resilience fallback that is faster and lower-cost than falling-back directly to a blockchain
  • Each Z-DAG transaction also settles onchain through Syscoin Core at 60-second block target using SHA-256 Proof of Work consensus
https://preview.redd.it/pgbx84jih8e51.png?width=1614&format=png&auto=webp&s=5f631d42a33dc698365eb8dd184b6d442def6640

Source code

https://github.com/syscoin/syscoin

API

Syscoin-js provides tooling for all Syscoin Core RPCs including interactivity with Z-DAG.

Documentation

Z-DAG White Paper
Useful read: An in-depth Z-DAG discussion between Syscoin Core developer Jag Sidhu and Brave Software Research Engineer Gonçalo Pestana

Trade-off

Z-DAG enables the ideal speed/security tradeoff to be determined per use-case in the application layer. It minimizes the sacrifice required to accept and redeem fast transfers/payments while providing more-than-ample security for microtransactions. This is supported on the premise that a Reddit user receiving points does need security yet generally doesn’t want nor need to wait for the same level of security as a nation-state settling an international trade debt. In any case, each Z-DAG transaction settles onchain at a block target of 60 seconds.

Syscoin Specs

Syscoin 3.0 White Paper
(4.0 white paper is pending. For improved scalability and less blockchain bloat, some features of v3 no longer exist in current v4: Specifically Marketplace Offers, Aliases, Escrow, Certificates, Pruning, Encrypted Messaging)
  • 16MB block bandwidth per minute assuming segwit witness carrying transactions, and transactions ~200 bytes on average
  • SHA256 merge mined with Bitcoin
  • UTXO asset layer, with base Syscoin layer sharing identical security policies as Bitcoin Core
  • Z-DAG on asset layer, bridge to Ethereum on asset layer
  • On-chain scaling with prospect of enabling enterprise grade reliable trustless payment processing with on/offchain hybrid solution
  • Focus only on Simple Value Transfers. MVP of blockchain consensus footprint is balances and ownership of them. Everything else can reduce data availability in exchange for scale (Ethereum 2.0 model). We leave that to other designs, we focus on transfers.
  • Future integrations of MAST/Taproot to get more complex value transfers without trading off trustlessness or decentralization.
  • Zero-knowledge Proofs are a cryptographic new frontier. We are dabbling here to generalize the concept of bridging and also verify the state of a chain efficiently. We also apply it in our Digital Identity projects at Blockchain Foundry (a publicly traded company which develops Syscoin softwares for clients). We are also looking to integrate privacy preserving payment channels for off-chain payments through zkSNARK hub & spoke design which does not suffer from the HTLC attack vectors evident on LN. Much of the issues plaguing Lightning Network can be resolved using a zkSNARK design whilst also providing the ability to do a multi-asset payment channel system. Currently we found a showstopper attack (American Call Option) on LN if we were to use multiple-assets. This would not exist in a system such as this.

Wallets

Web3 and mobile wallets are under active development by Blockchain Foundry Inc as WebAssembly applications and expected for release not long after mainnet deployment of Syscoin Core 4.2. Both of these will be multi-coin wallets that support Syscoin, SPTs, Ethereum, and ERC-20 tokens. The Web3 wallet will provide functionality similar to Metamask.
Syscoin Platform and tokens are already integrated with Blockbook. Custom hardware wallet support currently exists via ElectrumSys. First-class HW wallet integration through apps such as Ledger Live will exist after 4.2.
Current supported wallets
Syscoin Spark Desktop
Syscoin-Qt

Explorers

Mainnet: https://sys1.bcfn.ca (Blockbook)
Testnet: https://explorer-testnet.blockchainfoundry.co

Thank you for close consideration of our proposal. We look forward to feedback, and to working with the Reddit community to implement an ideal solution using Syscoin Platform!

submitted by sidhujag to ethereum [link] [comments]

[GIT] Weekly Update 127

Hey everyone!
Welcome to Weekly Update 127. This week we’ll be going over Stakenet and DEX’s slightly more generally. You bet that we’ll also be covering the usual GitHub development of Raiden and an exciting new release! Let’s dig in.

Raiden x Stakenet
Stakenet project is combining Lightning Network and Masternodes into a new blockchain for running decentralized applications. One of the first decentralized applications they are building is the Stakenet decentralized exchange. Currently, the decentralized exchange supports Bitcoin, Litecoin and Stakenet via Lightning Network integration. In the future they are planning to expand the list of the supported crypto currencies with the Ethereum ERC-20 standard.
Technology of choice which they believe will best support them in this integration is the Raiden Network. The Stakenet team, after dedicating some time into researching Raiden, are getting ready for the first testing of Raiden. For the first tests users will have to run a Raiden node separately and will have to use 2 different wallets (stakenet and ethereum wallet). However, after the initial setup user experience should be the same for trading as it is currently.
We will be following the progress of testing closely and cover it’s progress. It will be interesting to see Raiden enabling the DEX, especially cross-chain.
Development progress
The development goals remain the same as they were during the previous several weeks. The first goal is to prepare the demo for the Reddit Scaling Bake-Off while the second one is to reach the Alderaan milestone in the Raiden light client.
In the Raiden light client the Juggernaut testnet release was introduced. In this release the SDK has become much more robust. It includes many small bug fixes as well as some major reworks. Furthermore, it also introduces the completed withdraw functionality.
As the repository where the development team is preparing the demo for the Reddit Scaling Bake-Off is not yet open sourced we can only look at the changes made in the old repositories. It seems that the Raiden team is preparing a couple of bigger features one of which is handling something called “claims”. It will be interesting to see what exactly are claims and how they are integrated in the Raiden protocol.
Conclusion
To wrap up this Weekly Update, it’s exciting to cover DEX’s and Raiden Network being utilized for the name of decentralization. Don’t forget to check out the new light client release. If you’re interested to learn more about this update, DEX’s or Raiden Network in general then please leave a comment and we’ll get back to you.

Cheers!
submitted by BOR4 to raidennetwork [link] [comments]

Particl Marketplace: Where Sellers Meet Buyers

Particl Marketplace: Where Sellers Meet Buyers
People had been speculating since the dawn of crypto when the world’s largest online marketplaces, the ones of the Amazon caliber like eBay, Etsy or AliExpress, and, well, Amazon itself, would start to accept cryptocurrencies. There were a slew of rumors, opinions, and theories thickly interspersed with false reports popping up here and there of Amazon and its little cousins being on the verge of embracing cryptocurrencies. On top of that, someone has actually posted a petition on change.org to add Ether to Amazon as a payment method.
by StealthEX
Long story short, that was a waste of time. High hopes fell flat, and people lost religion. But not all. As the common wisdom goes, when hope dies, action begins. This exposition describes one such effort which tries to bring to fruition the idea of a decentralized marketplace for trading goods and services. And as you might have already figured it out, with a cryptocurrency as a means of payment. So let’s welcome Particl Marketplace and see what it has to offer – and what Amazon has missed.

What is it, in simple words?

Particl Marketplace is an online marketplace where you can trade goods and services. Not a big deal, you may think. However, what distinguishes it from places like Amazon as well as cryptocurrency-enabled marketplaces is the decentralized nature of purchases on Particl. You can think of it as a variety of a decentralized cryptocurrency exchange (aka DEX) where trades are being conducted on-chain. But in case of Particl, it is goods and services that are being traded, not fiat or crypto, with deals on-chain as well, fully encrypted and decentralized.
Particl is a global peer-to-peer privacy-centered marketplace that uses an automated two-party escrow system. It is crypto-agnostic and designed to work with any cryptocurrency, creating a secure, highly-scalable environment supported by a privacy-focused blockchain-based platform. The team behind the project sees its mission in developing “a new decentralized, private and democratic economy” that is governed by the network of its users, with no central authority or middleman getting in the way.
In the project developers’ own words, Particl enables everyone to participate in a free, anonymous exchange of all kinds of goods, without paying any fee and regardless of geographical location. To be sure, you are already thinking about Silk Road and its dark fate, and that the government is going to crack down monumentally on Particl one day. Well, the outcome may vary as the payments on the platform are made using its own cryptocurrency PART, with its laser focus on privacy and anonymity. But more on this later.

How did it grow up?

The development of the Particl project started in early 2017 with the release of the white paper describing the team’s vision for the marketplace, which was shortly followed by a successful seed funding that brought in enough funds ($750,000) to support the development of the project for a year (it turned out sufficient to last for over two years).
These donations helped to establish the Particl Foundation, a non-profit Swiss organization with the goal of providing legal protection for the project to ensure its sustained development and compliance with government regulations. It receives 10% of all the staking rewards generated on the Particl network, making the project self-sustainable and free for most uses.
Unlike other such projects in the crypto arena, Particl has been using its own blockchain from day one, which happened to be July 17, 2017. It was specifically designed to be crypto agnostic by supporting and working with any cryptocurrency. Additionally, it supported the smart contract tech out of the box, giving users an ability to build all kinds of decentralized applications (dApps) that can be directly integrated into the Particl marketplace.
On May 31, 2018, the Particl Marketplace, the Holy Grail of the entire endeavor, was made available for alpha testing on the testnet of the project, which later split into development and stable branches. It went live with the mainnet release of the Particl Open Marketplace on August 12, 2019, which featured Particl Desktop 2.0.0, a client-side application providing user interface and built-in wallet functions.
On November 25, 2019, the Particl Desktop 2.3.0 client was released that enabled Bitcoin payments and marked the introduction of untraceable transactions. With the help of the new in-wallet exchange module, everyone can easily swap their bitcoins for the native PART coin. Moreover, the module allows seamless integration of third-party accountless exchange services right into the marketplace, with StealthEX being one of them.

How is it different from other marketplaces?

The common solution many P2P marketplaces implement to protect buyers and sellers from the other party failing to honor their end of the bargain is through third-party escrow, where the “third-party” in the majority of places and cases is the platform itself that the market participants must mutually trust. In short, it is a single point of failure. And the selling (pardon the pun) point of the entire Particl’s marketplace is its decentralized escrow, which is a thing entirely between the two parties engaged. No middlemen allowed here!
And these are not empty words. Particl implements the concept best known as Mutually Assured Destruction (aptly shortened as MAD), a military doctrine you are certainly familiar with, and probably even afraid of, that consists in a mutual destruction of two belligerent parties in an all-out nuclear holocaust. If you are curious, the idea stems from the game theory and has a lot to do with the Nash Equilibrium, of John Nash’s fame. In a nutshell, Particl removes the need for a trusted escrow agent by introducing MAD escrow smart contracts.
A MAD escrow contract allows to lock funds in a multi-signature address that can be released only if all the parties sign off on the transaction. So both the seller and the buyer lock in the contract an agreed amount for a specified period of time, with the buyer also depositing the payment for the items purchased. The escrowed funds are released when both parties confirm the fulfillment of the agreement. Should one party break the terms, the funds remain locked for good causing a mutual financial loss until both parties agree to sign off.
Another crucial aspect of Particl Marketplace is its end-to-end privacy. The problem with conventional marketplaces acting as an escrow agent is that the communication between the parties should be open to the agent for it to serve as an arbitrator. With Particl, it is no longer required, and all messages between the buyer and the seller are encrypted. Despite being public, only their recipient can decrypt them, which effectively makes messages untraceable.
This is also where the PART coin turns up quite handy. It enables three different privacy modes, and with the most secure mode, the Anon mode, PART transactions utilize the RingCT privacy protocol, which hides both the amount transferred and the identity of the parties transacting. Accordingly, every part of the entire Particl trading environment is thoroughly decentralized, and the full anonymity of market participants is maintained at all times, making the platform a completely trustless marketplace. Big Brother is no longer watching you.
Aside from that, you can stake PART and generate a source of passive income for yourself. Particl uses a custom Proof-of-Stake consensus protocol, allowing you to get a piece of the pie in the form of new coins created at each block according to the scheduled inflation process. The annual inflation rate is initially set to 5% and goes down 1 percentage point every year until it finally floors at 2% indefinitely. Moreover, these rates are a bare minimum as they assume that all PART coins have been staked. Otherwise, the income will be bigger and better as the same rewards are paid to fewer coins.
Additionally, your passive income through staking PART will be augmented by the fees generated through the everyday marketplace operations. Whether it is network fees collected via PART transactions or marketplace listing fees paid by the sellers, all of them contribute to the stakers’ rewards. At the end of the day, staking PART can turn into a profitable business once the Particl platform starts to attract more traffic. In simple words, the more popular the market gets, the more fees it generates, the more coins the stakers earn.
As PART is a standalone cryptocurrency, it can be used outside Particl Marketplace as well. So if you plan on using it for purposes other than eCommerce, it is traded on several exchanges, for example, HitBTC and Bittrex, with more exchanges to list PART in the future. There are native Particl wallets available for storing PART such as Particl Qt with Ledger support, Particl-cli, and Particl Copay Wallet, with the latter available for both the desktop and the mobile. There is also a third-party multicurrency Flare Wallet, enabling cold staking for Particl.
Running Particl is a collective effort, which means no operational costs and no company bagging profits from it. The marketplace buyers don’t pay any commissions other than tiny network confirmation fees, while the sellers are only charged a small listing fee to keep spam listings to a minimum. This creates a highly competitive environment, with the sellers making more profits and the buyers having access to cheaper goods and services as a result.

What’s in the pipeline?

The next major release of the Particl Marketplace should have been Particl Desktop 2.4.0, but it was later rebranded as Particl Desktop 3.0 to reflect its breakthrough nature. It is set for release in the second half of 2020 and will enable the addition of user-created markets and storefronts, effectively turning the Particl marketplace into a network of specialized markets.
And if you think about it, that makes perfect sense. Say, you have a social network account highly merited and full of karma that you want to sell, whatever your reasons might be. Then creating a dedicated market for trading such accounts privately and securely may look extremely appealing to you. Whether it is the right thing to do is another matter, of course.
Kidding aside, it is obviously not about selling or offering something that the society on the whole doesn’t approve of or frowns upon. If you are a freelancer, for example, a graphics designer or a translator, you would be certainly interested in the future freelancer markets – along with your potential employers. Put simply, birds of a feather should flock together.
To keep things in perspective, popular freelancer markets that exist today charge up to 10-20% of what you would get from your client if you negotiated directly. All in all, establishing communities across the marketplace seems to be the next logical step in the natural evolution and growth of the platform. In fact, it is a little surprising that the Particl team didn’t come up with this idea earlier.
Meanwhile, we wish Particl success and good luck in achieving their goals and aspirations.
And remember if you need to exchange your coins StealthEX is here for you. We provide a selection of more than 250 coins and constantly updating the list so that our customers will find a suitable option. Our service does not require registration and allows you to remain anonymous. Why don’t you check it out? Just go to StealthEX and follow these easy steps:
✔ Choose the pair and the amount for your exchange. For example ETH to PART.
✔ Press the “Start exchange” button.
✔ Provide the recipient address to which the coins will be transferred.
✔ Move your cryptocurrency for the exchange.
✔ Receive your PART coins!
Follow us on Medium, Twitter, Facebook, and Reddit to get StealthEX.io updates and the latest news about the crypto world. For all requests message us via [email protected].
The views and opinions expressed here are solely those of the author. Every investment and trading move involves risk. You should conduct your own research when making a decision.
Original article was posted on https://stealthex.io/blog/2020/08/26/particl-marketplace-where-sellers-meet-buyers/
submitted by Stealthex_io to StealthEX [link] [comments]

Filecoin | Development Status and Mining Progress

Author: Gamals Ahmed, CoinEx Business Ambassador
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A decentralized storage network that transforms cloud storage into an account market. Miners obtain the integrity of the original protocol by providing data storage and / or retrieval. On the contrary, customers pay miners to store or distribute data and retrieve it.
Filecoin announced, that there will be more delays before its main network is officially launched.
Filecoin developers postponed the release date of their main network to late July to late August 2020.
As mentioned in a recent announcement, the Filecoin team said that the initiative completed the first round of the internal protocol security audit. Platform developers claim that the results of the review showed that they need to make several changes to the protocol’s code base before performing the second stage of the software testing process.
Created by Protocol Labs, Filecoin was developed using File System (IPFS), which is a peer-to-peer data storage network. Filecoin will allow users to trade storage space in an open and decentralized market.
Filecoin developers implemented one of the largest cryptocurrency sales in 2017. They have privately obtained over $ 200 million from professional or accredited investors, including many institutional investors.
The main network was slated to launch last month, but in February 2020, the Philly Queen development team delayed the release of the main network between July 15 and July 17, 2020.
They claimed that the outbreak of the Coronavirus (COVID-19) in China was the main cause of the delay. The developers now say that they need more time to solve the problems found during a recent codecase audit.
The Filecoin team noted the following:
“We have drafted a number of protocol changes to ensure that building our major network launch is safe and economically sound.” The project developers will add them to two different implementations of Filecoin (Lotus and go-filecoin) in the coming weeks.
Filecoin developers conducted a survey to allow platform community members to cast their votes on three different launch dates for Testnet Phase 2 and mainnet.
The team reported that the community gave their votes. Based on the vote results, the Filecoin team announced a “conservative” estimate that the second phase of the network test should begin by May 11, 2020. The main Filecoin network may be launched sometime between July 20 and August 21, 2020.
The updates to the project can be found on the Filecoin Road Map.
Filecoin developers stated:
“This option will make us get the most important protocol changes first, and then implement the rest as protocol updates during testnet.” Filecoin is back down from the final test stage.
Another filecoin decentralized storage network provider launched its catalytic test network, the final stage of the storage network test that supports the blockchain.
In a blog post on her website, Filecoin said she will postpone the last test round until August. The company also announced a calibration period from July 20 to August 3 to allow miners to test their mining settings and get an idea of how competition conditions affected their rewards.
Filecoin had announced earlier last month that the catalytic testnet test would precede its flagship launch. The delay in the final test also means that the company has returned the main launch window between August 31 and September 21.
Despite the lack of clear incentives for miners and multiple delays, Filecoin has succeeded in attracting huge interest, especially in China. Investors remained highly speculating on the network’s mining hardware and its premium price.
Mining in Filecoin
In most blockchain protocols, “miners” are network participants who do the work necessary to promote and maintain the blockchain. To provide these services, miners are compensated in the original cryptocurrency.
Mining in Filecoin works completely differently — instead of contributing to computational power, miners contribute storage capacity to use for dealing with customers looking to store data.
Filecoin will contain several types of miners:
Storage miners responsible for storing files and data on the network. Miners retrieval, responsible for providing quick tubes for file recovery. Miners repair to be carried out.
Storage miners are the heart of the network. They earn Filecoin by storing data for clients, and computerizing cipher directories to check storage over time. The probability of earning the reward reward and transaction fees is proportional to the amount of storage that the Miner contributes to the Filecoin network, not the hash power.
Retriever miners are the veins of the network. They earn Filecoin by winning bids and mining fees for a specific file, which is determined by the market value of the said file size. Miners bandwidth and recovery / initial transaction response time will determine its ability to close recovery deals on the network.
The maximum bandwidth of the recovery miners will determine the total amount of deals that it can enter into.
In the current implementation, the focus is mostly on storage miners, who sell storage capacity for FIL.

Hardware recommendations

The current system specifications recommended for running the miner are:
Compared to the hardware requirements for running a validity checker, these standards are much higher — although they definitely deserve it. Since these will not increase in the presumed future, the money spent on Filecoin mining hardware will provide users with many years of reliable service, and they pay themselves many times. Think of investing as a small business for cloud storage. To launch a model on the current data hosting model, it will cost millions of dollars in infrastructure and logistics to get started. With Filecoin, you can do the same for a few thousand dollars.
Proceed to mining
Deals are the primary function of the Filecoin network, and it represents an agreement between a client and miners for a “storage” contract.
Once the customer decides to have a miner to store based on the available capacity, duration and price required, he secures sufficient funds in a linked portfolio to cover the total cost of the deal. The deal is then published once the mine accepts the storage agreement. By default, all Filecoin miners are set to automatically accept any deal that meets their criteria, although this can be disabled for miners who prefer to organize their deals manually.
After the deal is published, the customer prepares the data for storage and then transfers it to the miner. Upon receiving all the data, the miner fills in the data in a sector, closes it, and begins to provide proofs to the chain. Once the first confirmation is obtained, the customer can make sure the data is stored correctly, and the deal has officially started.
Throughout the deal, the miner provides continuous proofs to the chain. Clients gradually pay with money they previously closed. If there is missing or late evidence, the miner is punished. More information about this can be found in the Runtime, Cut and Penalties section of this page.
At Filecoin, miners earn two different types of rewards for their efforts: storage fees and reward prevention.
Storage fees are the fees that customers pay regularly after reaching a deal, in exchange for storing data. This fee is automatically deposited into the withdrawal portfolio associated with miners while they continue to perform their duties over time, and is locked for a short period upon receipt.
Block rewards are large sums given to miners calculated on a new block. Unlike storage fees, these rewards do not come from a linked customer; Instead, the new FIL “prints” the network as an inflationary and incentive measure for miners to develop the chain. All active miners on the network have a chance to get a block bonus, their chance to be directly proportional to the amount of storage space that is currently being contributed to the network.
Duration of operation, cutting and penalties
“Slashing” is a feature found in most blockchain protocols, and is used to punish miners who fail to provide reliable uptime or act maliciously against the network.
In Filecoin, miners are susceptible to two different types of cut: storage error cut, unanimously reduce error.
Storage Error Reduction is a term used to include a wider range of penalties, including error fees, sector penalties, and termination fees. Miners must pay these penalties if they fail to provide reliability of the sector or decide to leave the network voluntarily.
An error fee is a penalty that a miner incurs for each non-working day. Sector punishment: A penalty incurred by a miner of a disrupted sector for which no error was reported before the WindowPoSt inspection.
The sector will pay an error fee after the penalty of the sector once the error is discovered.
Termination Fee: A penalty that a miner incurs when a sector is voluntary or involuntarily terminated and removed from the network.
Cutting consensus error is the penalty that a miner incurs for committing consensus errors. This punishment applies to miners who have acted maliciously against the network consensus function.
Filecoin miners
Eight of the top 10 Felticoin miners are Chinese investors or companies, according to the blockchain explorer, while more companies are selling cloud mining contracts and distributed file sharing system hardware. CoinDesk’s Wolfe Chao wrote: “China’s craze for Filecoin may have been largely related to the long-standing popularity of crypto mining in the country overall, which is home to about 65% of the computing power on Bitcoin at discretion.”
With Filecoin approaching the launch of the mainnet blocknet — after several delays since the $ 200 million increase in 2017 — Chinese investors are once again speculating strongly about network mining devices and their premium prices.
Since Protocol Labs, the company behind Filecoin, released its “Test Incentives” program on June 9 that was scheduled to start in a week’s time, more than a dozen Chinese companies have started selling cloud mining contracts and hardware — despite important details such as economics Mining incentives on the main network are still endless.
Sales volumes to date for each of these companies can range from half a million to tens of millions of dollars, according to self-reported data on these platforms that CoinDesk has watched and interviews with several mining hardware manufacturers.
Filecoin’s goal is to build a distributed storage network with token rewards to spur storage hosting as a way to drive wider adoption. Protocol Labs launched a test network in December 2019. But the tokens mined in the testing environment so far are not representative of the true silicon coin that can be traded when the main network is turned on. Moreover, the mining incentive economics on testnet do not represent how final block rewards will be available on the main network.
However, data from Blockecoin’s blocknetin testnet explorers show that eight out of 10 miners with the most effective mining force on testnet are currently Chinese miners.
These eight miners have about 15 petabytes (PB) of effective storage mining power, accounting for more than 85% of the total test of 17.9 petable. For the context, 1 petabyte of hard disk storage = 1000 terabytes (terabytes) = 1 million gigabytes (GB).
Filecoin craze in China may be closely related to the long-standing popularity of crypt mining in the country overall, which is home to about 65% of the computing power on Bitcoin by estimation. In addition, there has been a lot of hype in China about foreign exchange mining since 2018, as companies promote all types of devices when the network is still in development.
“Encryption mining has always been popular in China,” said Andy Tien, co-founder of 1475, one of several mining hardware manufacturers in Philquin supported by prominent Chinese video indicators such as Fenbushi and Hashkey Capital.
“Even though the Velikoyen mining process is more technologically sophisticated, the idea of mining using hard drives instead of specialized machines like Bitcoin ASIC may be a lot easier for retailers to understand,” he said.
Meanwhile, according to Feixiaohao, a Chinese service comparable to CoinMarketCap, nearly 50 Chinese crypto exchanges are often somewhat unknown with some of the more well-known exchanges including Gate.io and Biki — have listed trading pairs for Filecoin currency contracts for USDT.
In bitcoin mining, at the current difficulty level, one segment per second (TH / s) fragmentation rate is expected to generate around 0.000008 BTC within 24 hours. The higher the number of TH / s, the greater the number of bitcoins it should be able to produce proportionately. But in Filecoin, the efficient mining force of miners depends on the amount of data stamped on the hard drive, not the total size of the hard drive.
To close data in the hard drive, the Filecoin miner still needs processing power, i.e. CPU or GPU as well as RAM. More powerful processors with improved software can confine data to the hard drive more quickly, so miners can combine more efficient mining energy faster on a given day.
As of this stage, there appears to be no transparent way at the network level for retail investors to see how much of the purchased hard disk drive was purchased which actually represents an effective mining force.
The U.S.-based Labs Protocol was behind Filecoin’s initial coin offer for 2017, which raised an astonishing $ 200 million.
This was in addition to a $ 50 million increase in private investment supported by notable venture capital projects including Sequoia, Anderson Horowitz and Union Square Ventures. CoinDk’s parent company, CoinDk, has also invested in Protocol Labs.
After rounds of delay, Protocol Protocols said in September 2019 that a testnet launch would be available around December 2019 and the main network would be rolled out in the first quarter of 2020.
The test started as promised, but the main network has been delayed again and is now expected to launch in August 2020. What is Filecoin mining process?
Filecoin mainly consists of three parts: the storage market (the chain), the blockecin Filecoin, and the search market (under the chain). Storage and research market in series and series respectively for security and efficiency. For users, the storage frequency is relatively low, and the security requirements are relatively high, so the storage process is placed on the chain. The retrieval frequency is much higher than the storage frequency when there is a certain amount of data. Given the performance problem in processing data on the chain, the retrieval process under the chain is performed. In order to solve the security issue of payment in the retrieval process, Filecoin adopts the micro-payment strategy. In simple terms, the process is to split the document into several copies, and every time the user gets a portion of the data, the corresponding fee is paid. Types of mines corresponding to Filecoin’s two major markets are miners and warehousers, among whom miners are primarily responsible for storing data and block packages, while miners are primarily responsible for data query. After the stable operation of the major Filecoin network in the future, the mining operator will be introduced, who is the main responsible for data maintenance.
In the initial release of Filecoin, the request matching mechanism was not implemented in the storage market and retrieval market, but the takeover mechanism was adopted. The three main parts of Filecoin correspond to three processes, namely the stored procedure, retrieval process, packaging and reward process. The following figure shows the simplified process and the income of the miners:
The Filecoin mining process is much more complicated, and the important factor in determining the previous mining profit is efficient storage. Effective storage is a key feature that distinguishes Filecoin from other decentralized storage projects. In Filecoin’s EC consensus, effective storage is similar to interest in PoS, which determines the likelihood that a miner will get the right to fill, that is, the proportion of miners effectively stored in the entire network is proportional to final mining revenue.
It is also possible to obtain higher effective storage under the same hardware conditions by improving the mining algorithm. However, the current increase in the number of benefits that can be achieved by improving the algorithm is still unknown.
It seeks to promote mining using Filecoin Discover
Filecoin announced Filecoin Discover — a step to encourage miners to join the Filecoin network. According to the company, Filecoin Discover is “an ever-growing catalog of numerous petabytes of public data covering literature, science, art, and history.” Miners interested in sharing can choose which data sets they want to store, and receive that data on a drive at a cost. In exchange for storing this verified data, miners will earn additional Filecoin above the regular block rewards for storing data. Includes the current catalog of open source data sets; ENCODE, 1000 Genomes, Project Gutenberg, Berkley Self-driving data, more projects, and datasets are added every day.
Ian Darrow, Head of Operations at Filecoin, commented on the announcement:
“Over 2.5 quintillion bytes of data are created every day. This data includes 294 billion emails, 500 million tweets and 64 billion messages on social media. But it is also climatology reports, disease tracking maps, connected vehicle coordinates and much more. It is extremely important that we maintain data that will serve as the backbone for future research and discovery”.
Miners who choose to participate in Filecoin Discover may receive hard drives pre-loaded with verified data, as well as setup and maintenance instructions, depending on the company. The Filecoin team will also host the Slack (fil-Discover-support) channel where miners can learn more.
Filecoin got its fair share of obstacles along the way. Last month Filecoin announced a further delay before its main network was officially launched — after years of raising funds.
In late July QEBR (OTC: QEBR) announced that it had ceded ownership of two subsidiaries in order to focus all of the company’s resources on building blockchain-based mining operations.
The QEBR technology team previously announced that it has proven its system as a Filecoin node valid with CPU, GPU, bandwidth and storage compatibility that meets all IPFS guidelines. The QEBR test system is connected to the main Filecoin blockchain and the already mined filecoin coin has already been tested.
“The disclosure of Sheen Boom and Jihye will allow our team to focus only on the upcoming global launch of Filecoin. QEBR branch, Shenzhen DZD Digital Technology Ltd. (“ DZD “), has a strong background in blockchain development, extraction Data, data acquisition, data processing, data technology research. We strongly believe Filecoin has the potential to be a leading blockchain-based cryptocurrency and will make every effort to make QEBR an important player when Mainecoin mainnet will be launched soon”.
IPFS and Filecoin
Filecoin and IPFS are complementary protocols for storing and sharing data in a decentralized network. While users are not required to use Filecoin and IPFS together, the two combined are working to resolve major failures in the current web infrastructure.
IPFS
It is an open source protocol that allows users to store and transmit verifiable data with each other. IPFS users insist on data on the network by installing it on their own device, to a third-party cloud service (known as Pinning Services), or through community-oriented systems where a group of individual IPFS users share resources to ensure the content stays live.
The lack of an integrated catalytic mechanism is the challenge Filecoin hopes to solve by allowing users to catalyze long-term distributed storage at competitive prices through the storage contract market, while maintaining the efficiency and flexibility that the IPFS network provides.
Using IPFS
In IPFS, the data is hosted by the required data installation nodes. For data to persist while the user node is offline, users must either rely on their other peers to install their data voluntarily or use a central install service to store data.
Peer-to-peer reliance caching data may be a good thing as one or multiple organizations share common files on an internal network, or where strong social contracts can be used to ensure continued hosting and preservation of content in the long run. Most users in an IPFS network use an installation service.
Using Filecoin
The last option is to install your data in a decentralized storage market, such as Filecoin. In Filecoin’s structure, customers make regular small payments to store data when a certain availability, while miners earn those payments by constantly checking the integrity of this data, storing it, and ensuring its quick recovery. This allows users to motivate Filecoin miners to ensure that their content will be live when it is needed, a distinct advantage of relying only on other network users as required using IPFS alone.
Filecoin, powered by IPFS
It is important to know that Filecoin is built on top of IPFS. Filecoin aims to be a very integrated and seamless storage market that takes advantage of the basic functions provided by IPFS, they are connected to each other, but can be implemented completely independently of each other. Users do not need to interact with Filecoin in order to use IPFS.
Some advantages of sharing Filecoin with IPFS:
Of all the decentralized storage projects, Filecoin is undoubtedly the most interested, and IPFS has been running stably for two years, fully demonstrating the strength of its core protocol.
Filecoin’s ability to obtain market share from traditional central storage depends on end-user experience and storage price. Currently, most Filecoin nodes are posted in the IDC room. Actual deployment and operation costs are not reduced compared to traditional central cloud storage, and the storage process is more complicated.
PoRep and PoSt, which has a large number of proofs of unknown operation, are required to cause the actual storage cost to be so, in the early days of the release of Filecoin. The actual cost of storing data may be higher than the cost of central cloud storage, but the initial storage node may reduce the storage price in order to obtain block rewards, which may result in the actual storage price lower than traditional central cloud storage.
In the long term, Filecoin still needs to take full advantage of its P2P storage, convert storage devices from specialization to civil use, and improve its algorithms to reduce storage costs without affecting user experience. The storage problem is an important problem to be solved in the blockchain field, so a large number of storage projects were presented at the 19th Web3 Summit. IPFS is an important part of Web3 visibility. Its development will affect the development of Web3 to some extent. Likewise, Web3 development somewhat determines the future of IPFS. Filecoin is an IPFS-based storage class project initiated by IPFS. There is no doubt that he is highly expected.
Resources :
  1. https://www.coindesk.com/filecoin-pushes-back-final-testing-phase-announces-calibration-period-for-miners
  2. https://docs.filecoin.io/mine/#types-of-miners https://www.nasdaq.com/articles/inside-the-craze-for-filecoin-crypto-mining-in-china-2020-07-12؟amp
  3. https://www.prnewswire.com/news-releases/qebr-streamlines-holdings-to-concentrate-on-filecoin-development-and-mining-301098731.html
  4. https://www.crowdfundinsider.com/2020/05/161200-filecoin-seeks-to-boost-mining-with-filecoin-discove
  5. https://zephyrnet.com/filecoin-seeks-to-boost-mining-with-filecoin-discove
  6. https://docs.filecoin.io/introduction/ipfs-and-filecoin/#filecoin-powered-by-ipfs
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