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Electrum Transaction Pending for a nearly 3 hours Blockchain.info says Non-canonical signature: High S Value? /r/Bitcoin

Electrum Transaction Pending for a nearly 3 hours Blockchain.info says Non-canonical signature: High S Value? /Bitcoin submitted by BitcoinAllBot to BitcoinAll [link] [comments]

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:
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.

Ending Soon

Project Info Status Backers Avg Pledge Ending Comments
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) 142% 240 $74 01-30 kicktraq#take2
Kingdoms of Erden: King of the Mountain card game expansion Collect faction members and dominate the mountain in this set collection strategy fantasy card game. Ages 10+ 2-4 players 15-45 min (Has currently earned $990 of $600) 165% 57 $17 01-31 kicktraq #expansion
Elder-Forge tier 1 A collection of four resin kits by Elder-Forge, A limited edition of sculptures in different scales to assemble and paint! (Has currently earned €2,708 of €900) 300% 44 €62 01-31 kicktraq #minis
Supernatural Socks - A Tabletop Game About Lost Socks Have you ever lost your socks in the dryer? Well, Supernatural Socks is a game about the ghost that takes those socks. (Has currently earned $12,516 of $10,000) 125% 337 $37 01-31 kicktraq
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) 130% 5642 $46 01-31 kicktraq #show
Hit Me! The Comic Book Fist Fight Card Game Ever wanted to punch your friends like they do in the comics? Now you can with this quick push-your-luck filler game! (Has currently earned $2,070 of $1,000) 206% 51 $41 02-01 kicktraq
Black Hole Council A negotiation and deduction game about secret agendas and throwing planets into a black hole. (Has currently earned $36,751 of $20,000) 183% 965 $38 02-01 kicktraq
Fantasy Football Goblin Dice Goblin themed dice for Fantasy Football games (Has currently earned £580 of £500) 115% 26 £22 02-01 kicktraq
Corsair Leader CORSAIR LEADER is a solitaire board game putting you in the cockpits of US Navy and Marine aircraft battling the Japanese during WWII! (Has currently earned $74,888 of $17,000) 440% 606 $124 02-01 kicktraq
Highlander: The Board Game A fast-paced game of strategy and chance in which up to 6 immortals battle to claim the prize. There can be only one! (Has currently earned £29,254 of £10,000) 292% 994 £29 02-02 kicktraq
Countdown: Action Edition One Reckless Action Hero, an Out of Control Hostage Situation, who will You Trust? Welcome to Countdown, the 80's hidden role game! (Has currently earned $11,622 of $7,500) 154% 273 $43 02-02 kicktraq
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) 227% 21 $22 02-02 kicktraq
War Along the Chesapeake - Limited 250 Copies Volume 1 of 3 in the War of 1812 Campaign Series. There will only 250 copies printed. For 2 players. Plays in 1 to 2 hours. (Has currently earned $22,081 of $1,000) 2208% 227 $97 02-03 kicktraq
Heavy Gear Blitz! Utopia Armed Forces Plastic Miniatures Kickstarter to fund the plastic injection mold need to make plastic miniatures for Dream Pod 9's Heavy Gear Blitz! - Tabletop Wargame. (Has currently earned $18,801 CAD of $30,000 CAD) 62% 135 $139 CAD 02-03 kicktraq #minis
FROM BEYOND: DISTRESS CALL Sci-fi RPG Adventure A Starfinder Roleplaying game compatible sci-fi adventure set in a newly discovered star system. The first of a six episode saga. (Has currently earned MX$8,240 of MX$2,000) 412% 55 MX$150 02-03 kicktraq #rpg
Status Report! A 15 minute social deduction game for 3-7 players about a starship Captain attempting to save their crew from Rampant AI. (Has currently earned $14,943 of $17,000) 87% 393 $38 02-03 kicktraq
MINI Metal Polyhedral Dice Sets from Metallic Dice Games Our same great metal dice colors- but MINI! Mini metal dice are rarely found in the dice market, until now! (Has currently earned $16,675 of $10,000) 166% 318 $52 02-04 kicktraq #dice
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) 728% 1680 $91 02-04 kicktraq5

New This Week

Project Info Status Backers Avg Pledge Ending Comments
5 Stack, A Chip Stacking Game of Strategy and Chance 5 Stack is an incredibly "easy to learn" chip stacking board game, that involves strategy and chance. Fun for 2-6 Players, Ages 5+. (Has currently earned $4,834 of $35,000) 13% 71 $68 03-02
Auditions A brand new fun party game for everyone to enjoy! (Has currently earned £170 of £3,000) 5% 6 £28 02-09 #take5
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) 6% 20 £33 02-24
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) 6% 50 $54 02-24
Canon Fodder: The Game of Fandom and Charades Canon Fodder is a card game which has you acting as your favorite fictional characters in different and hilarious situations. (Has currently earned $7 of $6,000) 0% 1 NA 02-28 #lolwut
Crime Pays You’re a horrible person. But that’s okay. Nice guys finish last because they’re pussies. Rob, Scam, and Deal your way to millions. (Has currently earned $426 of $15,000) 2% 6 $71 03-23
Da Share Z0ne: THE DEVIL'S LEVEL Card Game The Devil's Level is a tabletop card game where 2+ players battle life's challenges to achieve an ultimate state of Chill. (Has currently earned $96,688 of $28,800) 335% 1501 $64 02-21
Dead 'til Dawn - Zombie Survival Horror Card Game Experience a unique zombie apocalypse story line with your friends full of choices, voting, chance, alliances, combat, and betrayals! (Has currently earned $5,512 of $7,500) 73% 89 $62 02-24
Dead Men Tell No Tales: Board Game Expansion + Miniatures The Kraken game expansion and miniatures addon for Dead Men Tell No Tales cooperative board game. (Has currently earned $56,351 of $50,000) 112% 715 $79 02-15 #expansion base game
Deadly Concoctions Mix Lethal Potions. Kill Your Friends. (Has currently earned $45 of $100) 45% 1 NA 02-02
Dicetopia Dicetopia is a quick strategic board game about dominating neighbourhoods, collecting shiny dice loot and completing secret missions! (Has currently earned kr67,183 SEK of kr40,000 SEK) 167% 230 kr292 SEK 02-25
Draft City: A strategic drafting game unlike any other. Draft City needs a new Mayor! Draft from a deck of 100 unique multi-use cards to gather resources and expand the city. (Has currently earned £369 of £5,000) 7% 14 £26 02-26
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) 628% 3677 $68 02-17
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) 11% 90 $20 CAD 02-09
Handmade Artisan Hardwood Dice Sets Hand-crafted. 100% Handmade from Select Artisan Hardwoods. Unique One of a Kind Dice. (Has currently earned $346 of $150) 230% 15 $23 02-05 #dice
Ian Brody's SHAEF A two-player, card-driven World War II strategy game covering the period from June 1944 to March 1945. (Has currently earned £6,683 of £10,000) 66% 147 £45 02-07
Isles of Terror Embark on sinister adventures in this 1-4 player story-driven strategy game of exploration and conquest. (Has currently earned €53,592 of €25,000) 214% 818 €66 02-20
Ladder Ball Jr. : Table Top Fun For Everyone Face off against your friends with this compact indoor version of everyone’s favorite lawn game. First to score 21 points wins! (Has currently earned $4,182 of $6,000) 69% 80 $52 03-04
League of Seekers A Lovecraftian Grimdark tabletop RPG Set in an alternate 18th century Europe. (Has currently earned £2,432 of £1,500) 162% 131 £19 02-22 #rpg
Lucky's Misadventures - Episode 42: Lost in Oddtopia You and your dog Lucky should not have taken the shortcut through the woods that night... (Has currently earned $4,411 of $4,242) 103% 105 $42 02-24
Make 100. Play:List - a party card game of list making. Play:List is a party card game of making lists. A game you play. A game you play by making lists. Play:List. Longest list wins! (Has currently earned $17 of $10,000) 0% 1 NA 02-26 #hmm
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) 67% 117 $19 02-22
Necronomicon Dice Evil Dead Set D2, D3, D4, D6, D8, D10, D12, D20 (Has currently earned €8,500 of €15,000) 56% 83 €102 03-05 #dice
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) 16% 23 $58 02-24
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) 2% 12 €21 02-20
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) 258% 3375 $38 02-08 #dice
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) 130% 560 $117 02-22
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) 88% 253 €70 02-12 #bling
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) 22% 122 $120 CAD 02-23
The Scarlet Pimpernel: Signature Edition Join the Scarlet Pimpernel on his daring adventures in this beautiful new euro strategy game! (Has currently earned $51,777 of $15,000) 345% 761 $68 02-13
Treasure Towers: Expanded options for Engraved Dice Towers We're back with even more options for your dice towers. New designs, new woods, and Treasure Towers with foil designs and suede lining (Has currently earned $564 of $2,500) 22% 9 $63 02-26 #bling
UBOOT The Board Game A real-time, app-driven board game of WW2 submarine warfare. This underwater war thriller will put your skills to the ultimate test. (Has currently earned £445,693 of £65,000) 685% 6661 £67 02-15
Unicorn Poop and the Secret of the Enchanted Arcade It's a card game, filled with 80's stuff, an enchanted arcade and poop. Unicorn poop! (Has currently earned £260 of £10,000) 2% 14 £19 02-24
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) 371% 1555 $36 02-16 #expansion base game
Warriors In a world where warriors protect their land from invasion, to save the nation, choose a warrior and be ready to battle. (Has currently earned $58 of $2,000) 2% 1 NA 03-27
Looking for more comprehensive Kickstarter gaming information? Check out the meta listings on BGG, explore Kicktraq's data-driven views, or, of course, Kickstater's Tabletop Category.

Footnotes

  • #hmm means that something about the project seems a little off. Buyer beware kinda thing.
  • #lolwut is reserved for projects that seem like trainwrecks. Check 'em out for amusement.
  • #take tags are for projects that have been restarted for some reason, with the number indicating what iteration we're currently on.
  • Did I miss something? Particularly stuff that might go in the Comments column? Let me know and I'll add it in.
Tip Jar - Keep me in Kickstarter money.
submitted by Zelbinian to boardgames [link] [comments]

Bitcoinj 0.11 released

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=
Notable changes and new features
Smaller improvements
Notable bug fixes
API changes
New documentation
Announcement: https://groups.google.com/forum/?fromgroups#!topic/bitcoinj-announce/3LW0uXhlRZY
Message on Bitcoin Developer Mailing List: http://www.mail-archive.com/[email protected]/msg03873.html
Google Code: https://code.google.com/p/bitcoinj/
GitHub: https://github.com/bitcoinj/bitcoinj
Edit: Added links to articles about BIP39 and BIP70 which were included in the original announcement.
submitted by alsomahler to Bitcoin [link] [comments]

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
submitted by dev_list_bot to bitcoin_devlist [link] [comments]

My view on the latest events at MtGox

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.
submitted by il--ya to Bitcoin [link] [comments]

Bitcoin-QT 0.9 disponível para download

The Core Developers of Bitcoin released the 0.9.0 FINAL of Bitcoin Core (aka Bitcoin QT).
DOWNLOAD:
This is a Final Version, but its the same as 0.9.0rc3
Sources: https://github.com/bitcoin/bitcoin/releases http://sourceforge.net/projects/bitcoin/files/Bitcoin/bitcoin-0.9.0/ https://bitcoin.org/bin/0.9.0/README.txt
Bitcoin Core version 0.9.0 is now available from:
https://bitcoin.org/bin/0.9.0/
This is a release candidate for a new major version. A major version brings both new features and bug fixes.
Please report bugs using the issue tracker at github:
https://github.com/bitcoin/bitcoin/issues

How to Upgrade

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.

OSX 10.5 / 32-bit no longer supported

0.9.0 drops support for older Macs. The minimum requirements are now: * A 64-bit-capable CPU (see http://support.apple.com/kb/ht3696); * Mac OS 10.6 or later (see https://support.apple.com/kb/ht1633).

Downgrading warnings

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.

Bitcoin-cli

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.

walletpassphrase RPC

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:

Transaction Fees

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

RPC:
Command-line options:
Block-chain handling and storage:
Wallet:
Mining:
Protocol and network:
Validation:
Build system:
GUI:
submitted by allex2501 to BrasilBitcoin [link] [comments]

Blockchain and Bitcoin  Digital signature Dieses Video zeigt dir visuell wie eine Blockchain, Hash, Schlüsselpaare, Signatur funktionieren BITFANTASTIC - Blockchain & AI - YouTube Come ascoltare YouTube in background a schermo spento 2020 video How To Transfer Non-Spendable Funds on blockchain  Crack Private Key 2020

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

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Blockchain and Bitcoin Digital signature

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 ...

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