Kickstarter Roundup: Jan 28, 2018 | 19 Ending Soon (incl: Tokyo Series: JIDOHANBAIKI, METRO, & JUTAKU) & 35 New This Week (incl: UBOOT)
What this is:
This is a weekly, curated listing of Kickstarter tabletop games projects that are either:
newly posted in the past 7 days, or
ending in the next 7 days (starting tomorrow) and have at least a fighting chance of being funded.
All board game projects meeting those criteria will automatically be included, no need to ask. (But the occasional non-board game project may also sneak in!) Expect new lists each Sunday sometime between 12:00am and 12:00pm PST.
Heropath - Dragon Roar Go out on an adventure, discover unique 3D place sites, interact with your opponents and monsters and be the first to slay the Dragon! (Has currently earned $17,796 of $12,500)
The Dice Tower - 2018 The Dice Tower enters its fourteenth season. We are raising funds to continue our coverage of board games and the people who play them. (Has currently earned $261,826 of $200,000)
Championship Baseball 1979 dice/card Game Championship Baseball 1979 is a two team individual card set for the Pine Tar Dice Game Engine. The cards feature a streamlined layout. (Has currently earned $456 of $200)
TOKYO SERIES: JIDOHANBAIKI, METRO, & JUTAKU JIDOHANBAIKI - Vending machines and guest designers METRO - Heavy economic train simulation JUTAKU - Real time dexterity for 1-8 (Has currently earned $152,928 of $21,000)
Auditions A brand new fun party game for everyone to enjoy! (Has currently earned £170 of £3,000)
Bitcoin Empire: To The Moon A card game about bitcoin and a conspiracy that the moon landings are fake. (Has currently earned £669 of £10,000)
BLOCKCHAIN: The Cryptocurrency Game An action-based strategy game for the new millennium! Mine, hack, trade, and store coins to be the first one to fill your vault. (Has currently earned $2,716 of $40,000)
Gentes - Deluxified™ Edition Tasty Minstrel Games & Game Brewer present Stephen Risthaus' "Gentes" a game about ancient civilizations- in Deluxified™ Format! (Has currently earned $251,292 of $40,000)
GO ECO: The Classic game of survival. The card game that allows you to Attack, Defend, Kill, Protect Steal, Trap, Hack and Surrender!!. It's all happening on your tabletop! (Has currently earned $1,786 CAD of $15,000 CAD)
MICRONOMICON: The Tiny Game of Terror An adorably diminutive game of massive amusement. If you are going to buy one tiny game of forbidden magic this year, make it this one! (Has currently earned $2,270 of $3,375)
Necronomicon Dice Evil Dead Set D2, D3, D4, D6, D8, D10, D12, D20 (Has currently earned €8,500 of €15,000)
Oh Cluck! - The Barnyard Brawl Oh Cluck! is a party style card game where no egg, or chicken, is safe. Taking 30-60 minutes to play, and designed for 2-6 players. (Has currently earned $1,344 of $8,000)
Payday: The Card Game Play the perfect heist and trick, trade, threaten, beg, lie, manipulate or fool with your friends to be the best criminal out of all. (Has currently earned €256 of €10,000)
PolyHero Dice - Rogue Set From the shadows rolls a PolyHero Dice Set for heroes of a more mysterious kind. Rogues, Thieves, Assassins... steal yourself a set! (Has currently earned $129,100 of $50,000)
Rambo: The Board Game No Man, No Law, No War Can Stop RAMBO! The Tactical Mission-Based Cooperative Board Game with Unique Stealth and Fog of War Mechanics! (Has currently earned $65,270 of $50,000)
THE ART OF TOKAIDO Admire, gathered in a single work for the very first time, all of the original graphical creations that make the universe of TOKAIDO. (Has currently earned €17,761 of €20,000)
THE PIT: The Board Game A harrowing raid on the deadliest mad science facility in the galaxy! Inspired by the hit dungeon-crawler video game! (Has currently earned $14,585 CAD of $65,000 CAD)
Valeria: Card Kingdoms - Shadowvale The next thrilling expansion - Shadowvale - introduces all new Monsters, Citizens and Domains, with a twist of classic horror. (Has currently earned $55,731 of $15,000)
Mike Hearn posted this on the Bitcoin Developer Mailing List:
I'm pleased to announce the release of bitcoinj 0.11, a library for writing Bitcoin applications that run on the JVM. BitcoinJ is widely used across the Bitcoin community; some users include Bitcoin Wallet for Android, MultiBit, Hive, blockchain.info, the biteasy.com block explorer (written in Lisp!), Circle, Neo/Bee (Cypriot payment network), bitpos.me, Bitcoin Touch, BlueMatt's relay network and DNS crawler, academic advanced contracts research and more. The release-0.11 git tag is signed by Andreas Schildbach's GPG key. The commit hash is 410d4547a7dd. This paragraph is signed by the same Bitcoin key as with previous releases (check their release announcements to establish continuity). Additionally, this email is signed using DKIM and for the first time, a key that was ID verified by the Swiss government. Key: 16vSNFP5Acsa6RBbjEA7QYCCRDRGXRFH4m Signature for last paragraph: H3DvWBqFHPxKW/cdYUdZ6OHjbq6ZtC5PHK4ebpeiE+FqTHyRLJ58BItbC0R2vo77h+DthpQigdEZ0V8ivSM7VIg=
Thanks to Mike Belshe, the wallet can now send to P2SH addresses.
Thanks to Matt Corallo, the network layer was rewritten from scratch. It no longer depends on Netty, and it now supports both blocking and non-blocking sockets. In practice that means Java's built in support for transparent SSL and SOCKS becomes available again, which in turn means connecting via Tor is now possible. The new framework is lightweight, easy to understand and has been running a DNS seed crawler for some months now.
Thanks to Kevin Greene, we've added some support for the BIP70 payment protocol. Wallet authors can now consume payment requests, check their signatures and submit payments with the new easy to use PaymentSession class. The wallet-tool command line UI has support and an article explains how to use it.
Thanks to Miron Cuperman, the wallet can now watch arbitrary addresses and scripts. The wallet could previously watch an address as long as the public key was known. Now it's possible to watch for addresses even when the public key is not known.
Also thanks to Miron, Bloom filtering was also improved. The system now tracks false positive rates and cleans the filter when FP rates get too high. Unfortunately, some privacy bugs in Bloom filtering remain, which could (amongst other things) allow a malicious remote peer to test whether you own a particular key.
Thanks to Alex Taylor (bitpos.me), a new PostgreSQL based pruning block store was added. This block store is fast, and indexes the UTXO set, allowing for fast lookup of the balance of any given address.
A Java 8 based wallet template app is now included. The template is designed for people writing contract based applications. It provides a simple app that can be copy/pasted, which connects to the P2P network, manages a wallet, and provides a GUI that shows progress, balance, address+qrcode for receiving money and has a button that is used to empty the wallet out. It's designed to have an attractive and modern look, with tasteful animations and artwork.
Micropayment channels got many big improvements to the API and implementation. The release in 0.10 can be seen as a beta, in this release the micropayments code has been taken for a test drive for a couple of real apps and many rough edges polished as a result.
The default USER_THREAD executor can now be replaced, allowing a 1-line switch of all callbacks onto a thread of your choice instead of needing to override each callback, each time. This should simplify and clean up the GUI code of wallet apps significantly.
The WalletTool command line app has a more convenient user interface now.
A new DNS seed has been added. The seed is run by Christian Decker, from ETH Zurich.
bitcoinj 0.11 will shortly be available via Maven Central. Please use the dependency verifier plugin and/or check the PGP signatures on the uploads, if you use this!
We finished adding nullity annotations to the API. You should now be able to assume that any method not annotated with @Nullable won't ever return null values.
The WalletAppKit got a bunch of new features and convenience APIs.
The wallet will now create inputs with dummy signatures if the private key for an output is missing, rather than throwing an exception. You can then edit the input later to substitute in a real signature. This is useful when the signing is being done elsewhere, outside of the library.
In full verification mode, execution of scripts (i.e. checking signatures) can now be switched off. This is useful if you trust the source of the chain and just want to calculate the UTXO set.
The wallet risk analysis code is now pluggable, better documented and checks for finality in a more sensible way.
Various memory usage and flow control optimisations were made to allow much larger wallets to sync on Android.
The transaction broadcast algorithm was changed to be more robust.
Double spend handling in the wallet was improved.
Generated signatures now use canonical S values. This will aid a future hard-forking rule change which bans malleable signatures.
Some fixes were made for enable usage with the Orchid Tor library. Further support for Tor is planned for future releases.
Notable bug fixes
Some hard-forking full verification bugs were fixed.
Thanks to Miron, PeerGroup now performs exponential backoff for peer connections, for instance if we cannot connect to them or if they disconnect us. This resolves an annoying bug in which if the library was configured with a single peer that was down, it would spin in a tight loop consuming battery.
Some functionality of the Wallet class was moved into separate classes under the wallet package.
The micropayments API and protocol changed. New clients/servers are not compatible with apps running against previous releases.
The Wallet sendCoins/completeTx methods no longer return booleans or null to indicate failure, they now throw InsufficientMoneyException?or a subclass if the transaction cannot be completed. The exception object typically contains information on how much money is missing.
Some mis-named methods in the HD key derivation API were renamed.
The WalletEventListener interface has an extra method for watching scripts now.
Peer discovery classes moved under the net.discovery package
Any APIs that relied on Netty are now different.
An article on the networking API
Info on testing your apps, and how to use regtest mode to make a private Bitcoin network that allows you to mine blocks instantly.
A reference table showing which API's implement which Bitcoin Improvement Proposals (BIPs).
Proposed segwit related consensus and policy rules in Bitcoin Core 0.13.1 | Johnson Lau | Sep 10 2016
Johnson Lau on Sep 10 2016: There are several opening pull requests for segwit related consensus and policy rules. This email summarize and explain the rationale. As a general warning, people must not assume that a script spendable in pre-segwit system would also be spendable as a segwit script. They share much similarity but there are also notable differences, such as BIP143 and those proposals listed below. In any case, test your segwit system on testnet with the standard rules turned on, and a small amount of money after segwit is activated on mainnet. Script Malleability fixes: Segwit (BIP141) fixes the most nasty malleability in Bitcoin: transaction ID malleability. However, due to the flexibility of scripting system, it is still possible for a relay node to insert arbitrary data to the witness without invalidating the transaction. Although segwit makes such attacks much harmless, this could still be annoying as people may write data to the blockchain at others costs. NULLDUMMY, MINIMALIF, NULLFAIL are fixing this type of problem. NULLDUMMY has been implemented as a policy for more than a year and a softfork is proposed in the upcoming 0.13.1. MINIMALIF and NULLFAIL are both new policy proposed for 0.13.1, and may become softforks in the future. Script designers must pay attention to these potential softforks to avoid creation of unspendable scripts. Consensus: BIP147 "NULLDUMMY" softfork (for both segwit and pre-segwit scripts) PR: https://github.com/bitcoin/bitcoin/pull/8636 Related discussion: https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2016-Septembe013096.html Policy: "MINIMALIF" Minimal OP_IF/NOTIF argument (segwit scripts only) PR: https://github.com/bitcoin/bitcoin/pull/8526 Related discussion: https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2016-August/013014.html Policy: "NULLFAIL" Null signature for failed CHECK(MULTI)SIG (for both segwit and pre-segwit scripts) PR: https://github.com/bitcoin/bitcoin/pull/8634 Related discussion: https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2016-Septembe013098.html Policy: Resources limit for P2WSH PR: https://github.com/bitcoin/bitcoin/pull/8499 For P2WSH, a policy limit is proposed with witnessScript <= 3600 bytes, witness stack item size <= 80 bytes, and witness stack items <= 100 3600 bytes witnessScript and 100 stack items are adequate for a n-of-100 multisig using 100 OP_CHECKSIG, 99 OP_ADD, and 1 OP_EQUAL. Before segwit, the biggest standard mutlisig is n-of-15 with P2SH. The max size for ECDSA signature is 73 bytes and nothing (except hashing opcodes) should use more than that with the current scripting language. This is to prevent abuse of witness space, and reduce the risks of DoS attack with some unknown special and big scripts. The consensus limits described in BIP141 are not changed, as witnessScript <= 10000 bytes and witness stack item size <= 520 bytes. (There is also an implied limit for witness stack items of 412, see the inline comments in #8499) Policy: Public key must be compressed (segwit only) PR: https://github.com/bitcoin/bitcoin/pull/8499 It is proposed that only compressed keys (33 bytes starting with 0x02 or 0x03) are allowed in segwit scripts. This is a policy only and non-compressed keys are still valid in a block. A softfork based on this may be proposed with further risks and benefits analysis We can't have such policy or softfork in non-segwit scripts since there are many UTXOs being stored that way. Since segwit is a completely new script system, there is no strong reasons to support non-compressed keys. Wallet developers must pay attention to this policy and must not assume that existing P2PKH hashes or P2SH scripts are spendable in segwit. The RPC command addwitnessaddress will refuse to return a segwit address if the given key/multi-sig is unknown or is not compressed. createwitnessaddress will return an address for whatever scripts given, without checking the validity at all. (even an OP_RETURN is provided, it will still return a P2WSH address). We may need to give a warning, or simply remove this command. DoS protection: Banning peers for sending certain types of consensus invalid witness PR: https://github.com/bitcoin/bitcoin/pull/8499 Peers sending certain types of invalid witness will be banned before fee and SigOp policy are checked. Those are all based on explicit or implicit consensus rules, and will protect P2WPKH and canonical multisigs against the DoS issues described in #8279. The rest of P2WSH scripts will be covered by #8525 by not storing witness txs in rejection cache. DoS protection: Mandatory softfork flags for segwit txs PR: https://github.com/bitcoin/bitcoin/pull/8499 Since all segwit-aware nodes must be aware of all existing softforks, including BIP66, 65, 112, 141, and 143, the verification flags for these BIPs will be mandatory for transactions with non-empty witness. Wallets relaying witness transactions violating these rules will be banned (even if the violation happens in a non-segwit input). original: https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2016-Septembe013112.html
This is my picture of events around so-called Technical Issue in bitcoin protocol, which MtGox uses as a pretext for their ongoing BTC withdrawal block. Just for those who is not aware yet, this is a classical FUD. And already refuted by some core developers and Bitcoin Foundation. So it started in 2011. On 24 April 2011 the protocol specification was updated to specify that ASN1/DER encoding should be used for the transaction signature: https://en.bitcoin.it/wiki/Protocol_specification#Signatures On May 15, 2011, there were some concerns raised, confirmed as a known low-priority issue by Gavin Andresen: https://bitcointalk.org/index.php?topic=8392.0 Much later this known transaction malleability issue was published in wiki on 21 January 2013: https://en.bitcoin.it/wiki/Transaction_Malleability There is also a bit of interesting background from GMaxwell: http://www.reddit.com/Bitcoin/comments/1x93tf/some_irc_chatter_about_what_is_going_on_at_mtgox/cf99yac Malleability patches were released in 2012 and 2013: Dec 22, 2012: https://github.com/bitcoin/bitcoin/commit/bffc744444c19e25c60c8df999beb83192f96a8a Aug 15, 2013: https://github.com/bitcoin/bitcoin/commit/a81cd96805ce6b65cca3a40ebbd3b2eb428abb7b Sep 21, 2012: https://github.com/bitcoin/bitcoin/commit/58bc86e37fda1aec270bccb3df6c20fbd2a6591c and probably other. If you are familiar with C, look in particular at the lines with text "Non-canonical signature: R value excessively padded" message and "Non-canonical signature: S value excessively padded" - that's the ASN.1/DER encoding deviations which were present in MtGox signatures and reason why some of their transactions were rejected by nodes when format rules in reference clients were tightened. In spite of all this development activity, as of the end of January, MtGox developers still had no clue what this "Excessive padding" error is about. This sloppy signature format implementation was the actual reason why it was so easy to exploit this (otherwise mostly hypothetical) vulnerability with MtGox exchange, but not with other exchanges. Other exchanges implement signatures properly, so it would take a lot of luck and/or resources for the hacker to intercept the transaction, modify it and propagate throughout the network faster than the original transaction. In the latest version of the reference client, malformed transactions are rejected, and only properly formed transactions are propagated through the network. So for the hacker to pull the trick, it would indeed require to "alter the transaction fast enough, for example with a direct connection to different mining pools"; but that would be not as easy to "cause the transaction hash alteration to be committed to the blockchain" as MtGox claims in their mendacious statement. It was easy in their case though, because the hacker had all the time he needed to replay "fixed" transaction. Also, despite false MtGox claim: "It is likely that these services will assume.. have currently no means to recognize the alternative transactions as theirs in an efficient way", other exchanges very likely don't assume, but just follow reference client and use other (efficient enough) ways to track transactions and spent outputs. MtGox assumes here that everybody else is as incompetent as they are, which is beyond my imagination. To my knowledge (I analized https://data.mtgox.com/api/0/bitcoin_tx.php - list of "stuck" transactions published by MtGox) the oldes spent transactions which they try to re-use go as far back as 10 November 2013 (at least). So basically since 10 of November their exchange was exploited, and they didn't even notice that. The only "flaw" in bitcoin protocols in this case are humans beings: incompetent, ignorant, complacent and dishonest. And after all that, they decided to publish their filthy statement, blaming everybody except themselves for their own faults, and not even caring to apologise. They also want to portray themselves as heroes, who save Bitcoin from fatal flaws. Latest rumour was, that they donated 10000BTC to bitcoin foundation to push[might have misinterpreted that] pushing through a completely unnecessary patch into reference client implementation, just to prove their point. Shame on you, MtGox. Edit: spelling.
If you are running an older version, shut it down. Wait until it has completely shut down (which might take a few minutes for older versions), uninstall all earlier versions of Bitcoin, then run the installer (on Windows) or just copy over /Applications/Bitcoin-Qt (on Mac) or bitcoind/bitcoin-qt (on Linux). If you are upgrading from version 0.7.2 or earlier, the first time you run 0.9.0 your blockchain files will be re-indexed, which will take anywhere from 30 minutes to several hours, depending on the speed of your machine. On Windows, do not forget to uninstall all earlier versions of the Bitcoin client first, especially if you are switching to the 64-bit version.
Windows 64-bit installer
New in 0.9.0 is the Windows 64-bit version of the client. There have been frequent reports of users running out of virtual memory on 32-bit systems during the initial sync. Because of this it is recommended to install the 64-bit version if your system supports it. NOTE: Release candidate 2 Windows binaries are not code-signed; use PGP and the SHA256SUMS.asc file to make sure your binaries are correct. In the final 0.9.0 release, Windows setup.exe binaries will be code-signed.
The 'chainstate' for this release is not always compatible with previous releases, so if you run 0.9 and then decide to switch back to a 0.8.x release you might get a blockchain validation error when starting the old release (due to 'pruned outputs' being omitted from the index of unspent transaction outputs). Running the old release with the -reindex option will rebuild the chainstate data structures and correct the problem. Also, the first time you run a 0.8.x release on a 0.9 wallet it will rescan the blockchain for missing spent coins, which will take a long time (tens of minutes on a typical machine).
Rebranding to Bitcoin Core
To reduce confusion between Bitcoin-the-network and Bitcoin-the-software we have renamed the reference client to Bitcoin Core.
Autotools build system
For 0.9.0 we switched to an autotools-based build system instead of individual (q)makefiles. Using the standard "./autogen.sh; ./configure; make" to build Bitcoin-Qt and bitcoind makes it easier for experienced open source developers to contribute to the project. Be sure to check doc/build-*.md for your platform before building from source.
Another change in the 0.9 release is moving away from the bitcoind executable functioning both as a server and as a RPC client. The RPC client functionality ("tell the running bitcoin daemon to do THIS") was split into a separate executable, 'bitcoin-cli'. The RPC client code will eventually be removed from bitcoind, but will be kept for backwards compatibility for a release or two.
The behavior of the walletpassphrase RPC when the wallet is already unlocked has changed between 0.8 and 0.9. The 0.8 behavior of walletpassphrase is to fail when the wallet is already unlocked:
> walletpassphrase 1000 walletunlocktime = now + 1000 > walletpassphrase 10 Error: Wallet is already unlocked (old unlock time stays)
The new behavior of walletpassphrase is to set a new unlock time overriding the old one:
> walletpassphrase 1000 walletunlocktime = now + 1000 > walletpassphrase 10 walletunlocktime = now + 10 (overriding the old unlock time)
Transaction malleability-related fixes
This release contains a few fixes for transaction ID (TXID) malleability issues:
-nospendzeroconfchange command-line option, to avoid spending zero-confirmation change
IsStandard() transaction rules tightened to prevent relaying and mining of mutated transactions
Additional information in listtransactions/gettransaction output to report wallet transactions that conflict with each other because they spend the same outputs.
Bug fixes to the getbalance/listaccounts RPC commands, which would report incorrect balances for double-spent (or mutated) transactions.
New option: -zapwallettxes to rebuild the wallet's transaction information
This release drops the default fee required to relay transactions across the network and for miners to consider the transaction in their blocks to 0.01mBTC per kilobyte. Note that getting a transaction relayed across the network does NOT guarantee that the transaction will be accepted by a miner; by default, miners fill their blocks with 50 kilobytes of high-priority transactions, and then with 700 kilobytes of the highest-fee-per-kilobyte transactions. The minimum relay/mining fee-per-kilobyte may be changed with the minrelaytxfee option. Note that previous releases incorrectly used the mintxfee setting to determine which low-priority transactions should be considered for inclusion in blocks. The wallet code still uses a default fee for low-priority transactions of 0.1mBTC per kilobyte. During periods of heavy transaction volume, even this fee may not be enough to get transactions confirmed quickly; the mintxfee option may be used to override the default.
0.9.0 Release notes
New notion of 'conflicted' transactions, reported as confirmations: -1
'listreceivedbyaddress' now provides tx ids
Add raw transaction hex to 'gettransaction' output
Updated help and tests for 'getreceivedby(account|address)'
In 'getblock', accept 2nd 'verbose' parameter, similar to getrawtransaction, but defaulting to 1 for backward compatibility
Add 'verifychain', to verify chain database at runtime
Add 'dumpwallet' and 'importwallet' RPCs
'keypoolrefill' gains optional size parameter
Add 'getbestblockhash', to return tip of best chain
Add 'chainwork' (the total work done by all blocks since the genesis block) to 'getblock' output
Make RPC password resistant to timing attacks
Clarify help messages and add examples
Add 'getrawchangeaddress' call for raw transaction change destinations
Reject insanely high fees by default in 'sendrawtransaction'
Add RPC call 'decodescript' to decode a hex-encoded transaction script
Make 'validateaddress' provide redeemScript
Add 'getnetworkhashps' to get the calculated network hashrate
New RPC 'ping' command to request ping, new 'pingtime' and 'pingwait' fields in 'getpeerinfo' output
Adding new 'addrlocal' field to 'getpeerinfo' output
Add verbose boolean to 'getrawmempool'
Add rpc command 'getunconfirmedbalance' to obtain total unconfirmed balance
Explicitly ensure that wallet is unlocked in importprivkey
Add check for valid keys in importprivkey
New option: -nospendzeroconfchange to never spend unconfirmed change outputs
New option: -zapwallettxes to rebuild the wallet's transaction information
Rename option '-tor' to '-onion' to better reflect what it does
Add '-disablewallet' mode to let bitcoind run entirely without wallet (when built with wallet)
Update default '-rpcsslciphers' to include TLSv1.2
make '-logtimestamps' default on and rework help-message
RPC client option: '-rpcwait', to wait for server start
Allow -noserver with bitcoind
Block-chain handling and storage:
Update leveldb to 1.15
Check for correct genesis (prevent cases where a datadir from the wrong network is accidentally loaded)
Allow txindex to be removed and add a reindex dialog
Log aborted block database rebuilds
Store orphan blocks in serialized form, to save memory
Limit the number of orphan blocks in memory to 750
Bitcoin News. Google News Bitcoin; Bitcoin.com; Cryptocoins Exchanges. Coinbase ; Kraken ; CEX.IO; Binance Stack Overflow Public questions and answers; Teams Private questions and answers for your team; Enterprise Private self-hosted questions and answers for your enterprise; Talent Hire technical talent; Advertising Reach developers worldwide In particular, for Bitcoin the validity of non-canonical signatures is problematic because tx ids are hashes over the whole transaction, including the signature. I can stick garbage at the end of your transaction's signature— resulting in a still valid transaction but with a different txid which your software may or may not recognize as being the same transaction. How to export your private keys from blockchain.info and move the balance to any address using electrum The Problem Blockchain.info is a popular online bitcoin wallet provider. It's name often confu A signature scheme is used in blockchain to sign the transaction, hence, authenticating the intended sender and providing transaction integrity as well as non-repudiation
How to turn your non-spendable Bitcoin to spendable, by getting your private key which will give you access to your non-spendable account, Watch this video t... 🎵 SCARICA / DOWNLOAD ️ https://brave.com/lui901 🔴 ISCRIVITI alla newsletter per non perderti i miei video 👉 https://bitcoin-criptovalute-sicurezza-e-privacy... In this video we introduce the basic concepts behind how new blocks are created in the Bitcoin blockchain. We start by taking another look at the blockchain.info website to see some sample blocks ... In this video we will discuss: Digital signature Encryption and decryption Achieving Confidentiality and authentication using a digital signature #blockchain... شركة سوبر ام سوفت لتقنية المعلومات - قسم الدورات التدريبية Blockchain and Bitcoin Fundamentals Digital signature JOIN OUR OFFICIAL FB GROUP https ...