LONG TERM INVESTMENT FUND NATURAL RESOURCES FONDS Fonds ...

The Hong Kong Agreement that has totally been breached by the Bitcoin Core Contributors.

On February 21st, 2016, in Hong Kong’s Cyberport, representatives from the bitcoin industry and members of the development community have agreed on the following points:
Based on the above points, the timeline will likely follow the below dates.
The undersigned support this roadmap.
Together, we are:
Kevin Pan - Manager - AntPool
Anatoly Legkodymov - CEO - A-XBT
Larry Salibra - Bitcoin Association Hong Kong
Leonhard Weese - Bitcoin Association Hong Kong
Cory Fields - Bitcoin Core Contributor
Johnson Lau - Bitcoin Core Contributor
Luke Dashjr - Bitcoin Core Contributor
Matt Corallo - Bitcoin Core Contributor
Peter Todd - Bitcoin Core Contributor
Kang Xie - Bitcoin Roundtable
Phil Potter - Chief Strategy Officer - Bitfinex
Valery Vavilov - CEO - BitFury
Alex Petrov - CIO - BitFury
Jihan Wu - Co-CEO - Bitmain
Micree Zhan - Co-CEO - Bitmain
James Hilliard - Pool/Farm Admin - BitmainWarranty
Yoshi Goto - CEO - BitmainWarranty
Alex Shultz - CEO - BIT-X Exchange
Han Solo - CEO - Blockcloud
Adam Back - President - Blockstream
Bobby Lee - CEO - BTCC
Samson Mow - COO - BTCC
Robin Yao - CTO - BW
Obi Nwosu - Managing Director - Coinfloor
Mark Lamb - Founder - Coinfloor
Wang Chun - Admin - F2Pool
Marco Streng - CEO - Genesis Mining
Marco Krohn - CFO - Genesis Mining
Oleksandr Lutskevych - CEO - GHash.IO & CEX.IO
Wu Gang - CEO - HaoBTC
Leon Li - CEO - Huobi
Zhang Jian - Vice President - Huobi
Eric Larchevêque - CEO - Ledger
Jack Liao - CEO - LIGHTNINGASIC & BitExchange
Star Xu - CEO - OKCoin
Jack Liu - Head of International - OKCoin
Guy Corem - CEO - Spondoolies-Tech
Pindar Wong - Sponsor
submitted by singularity87 to btc [link] [comments]

Decred Journal – September 2018

Note: you can read this on GitHub (link), Medium (link) or old Reddit (link).

Development

Final version 1.3.0 of the core software was released bringing all the enhancements reported last month to the rest of the community. The groundwork for SPV (simplified payment verification) is complete, another reduction of fees is being deployed, and performance stepped up once again with a 50% reduction in startup time, 20% increased sync speed and more than 3x faster peer delivery of block headers (a key update for SPV). Decrediton's integrations of SPV and Politeia are open for testing by experienced users. Read the full release notes and get the downloads on GitHub. As always, don't forget to verify signatures.
dcrd: completed several steps towards multipeer downloads, improved introduction to the software in the main README, continued porting cleanups and refactoring from upstream btcd.
Currently in review are initial release of smart fee estimator and a change to UTXO set semantics. The latter is a large and important change that provides simpler handling, and resolves various issues with the previous approach. A lot of testing and careful review is needed so help is welcome.
Educational series for new Decred developers by @matheusd added two episodes: 02 Simnet Setup shows how to automate simnet management with tmux and 03 Miner Reward Invalidation explains block validity rules.
Finally, a pull request template with a list of checks was added to help guide the contributors to dcrd.
dcrwallet: bugfixes and RPC improvements to support desktop and mobile wallets.
Developers are welcome to comment on this idea to derive stakepool keys from the HD wallet seed. This would eliminate the need to backup and restore redeem scripts, thus greatly improving wallet UX. (missed in July issue)
Decrediton: bugfixes, refactoring to make the sync process more robust, new loading animations, design polishing.
Politeia: multiple improvements to the CLI client (security conscious users with more funds at risk might prefer CLI) and security hardening. A feature to deprecate or timeout proposals was identified as necessary for initial release and the work started. A privacy enhancement to not leak metadata of ticket holders was merged.
Android: update from @collins: "Second test release for dcrandroid is out. Major bugs have been fixed since last test. Latest code from SPV sync has been integrated. Once again, bug reports are welcome and issues can be opened on GitHub". Ask in #dev room for the APK to join testing.
A new security page was added that allows one to validate addresses and to sign/verify messages, similar to Decrediton's Security Center. Work on translations is beginning.
Overall the app is quite stable and accepting more testers. Next milestone is getting the test app on the app store.
iOS: the app started accepting testers last week. @macsleven: "the test version of Decred Wallet for iOS is available, we have a link for installing the app but the builds currently require your UDID. Contact either @macsleven or @raedah with your UDID if you would like to help test.".
Nearest goal is to make the app crash free.
Both mobile apps received new design themes.
dcrdata: v3.0 was released for mainnet! Highlights: charts, "merged debits" view, agendas page, Insight API support, side chain tracking, Go 1.11 support with module builds, numerous backend improvements. Full release notes here. This release featured 9 contributors and development lead @chappjc noted: "This collaboration with @raedahgroup on our own block explorer and web API for @decredproject has been super productive.".
Up next is supporting dynamic page widths site wide and deploying new visual blocks home page.
Trezor: proof of concept implementation for Trezor Model T firmware is in the works (previous work was for Model One).
Ticket splitting: updated to use Go modules and added simnet support, several fixes.
docs: beginner's guide overhaul, multiple fixes and cleanups.
decred.org: added 3rd party wallets, removed inactive PoW pools and removed web wallet.
@Richard-Red is building a curated list of Decred-related GitHub repositories.
Welcome to new people contributing for the first time: @klebe, @s_ben, @victorguedes, and PrimeDominus!
Dev activity stats for September: 219 active PRs, 197 commits, 28.7k added and 18.8k deleted lines spread across 6 repositories. Contributions came from 4-10 developers per repository. (chart)

Network

Hashrate: started and ended the month around 75 PH/s, hitting a low of 60.5 and a new high of 110 PH/s. BeePool is again the leader with their share varying between 23-54%, followed by F2Pool 13-30%, Coinmine 4-6% and Luxor 3-5%. As in previous months, there were multiple spikes of unidentified hashrate.
Staking: 30-day average ticket price is 98 DCR (+2.4). The price varied between 95.7 and 101.9 DCR. Locked DCR amount was 3.86-3.96 million DCR, or 45.7-46.5% of the supply.
Nodes: there are 201 public listening nodes and 325 normal nodes per dcred.eu. Version distribution: 5% are v1.4.0(pre) dev builds (+3%), 30% on v1.3.0 (+25%), 42% on v1.2.0 (-20%), 15% on v1.1.2 (-7%), 6% on v1.1.0. More than 76% of nodes run v1.2.0 and higher and therefore support client filters. Data as of Oct 1.

ASICs

Obelisk posted two updates on their mailing list. 70% of Batch 1 units are shipped, an extensive user guide is available, Obelisk Scanner application was released that allows one to automatically update firmware. First firmware update was released and bumped SC1 hashrate by 10-20%, added new pools and fixed multiple bugs. Next update will focus on DCR1. It is worth a special mention that the firmware source code is now open! Let us hope more manufacturers will follow this example.
A few details about Whatsminer surfaced this month. The manufacturer is MicroBT, also known as Bitwei and commonly misspelled as Bitewei. Pangolinminer is a reseller, and the model name is Whatsminer D1.
Bitmain has finally entered Decred ASIC space with their Antminer DR3. Hash rate is 7.8 TH/s while pulling 1410 W, at the price of $673. These specs mean it has the best GH/W and GH/USD of currently sold miners until the Whatsminer or others come out, although its GH/USD of 11.6 already competes with Whatsminer's 10.5. Discussed on Reddit and bitcointalk, unboxing video here.

Integrations

Meet our 17th voting service provider: decredvoting.com. It is operated by @david, has 2% fee and supports ticket splitting. Reddit thread is here.
For a historical note, the first VSP to support ticket splitting was decredbrasil.com:
@matheusd started tests on testnet several months ago. I contacted him so we could integrate with the pool in June this year. We set up the machine in July and bought the first split ticket on mainnet, using the decredbrasil pool, on July 19. It was voted on July 30. After this first vote on mainnet, we opened the tests to selected users (with more technical background) on the pool. In August we opened the tests to everyone, and would call people who want to join to the #ticket_splitting channel, or to our own Slack (in Portuguese, so mostly Brazilian users). We have 28 split tickets already voted, and 16 are live. So little more than 40 split tickets total were bought on decredbrasil pool. (@girino in #pos-voting)
KuCoin exchange listed DCBTC and DCETH pairs. To celebrate their anniversary they had a 99% trading fees discount on DCR pairs for 2 weeks.
Three more wallets integrated Decred in September:
ChangeNow announced Decred addition to their Android app that allows accountless swaps between 150+ assets.
Coinbase launched informational asset pages for top 50 coins by market cap, including Decred. First the pages started showing in the Coinbase app for a small group of testers, and later the web price dashboard went live.

Adoption

The birth of a Brazilian girl was registered on the Decred blockchain using OriginalMy, a blockchain proof of authenticity services provider. Read the full story in Portuguese and in English.

Marketing

Advertising report for September is ready. Next month the graphics for all the ads will be changing.
Marketing might seem quiet right now, but a ton is actually going on behind the scenes to put the right foundation in place for the future. Discovery data are being analyzed to generate a positioning strategy, as well as a messaging hierarchy that can guide how to talk about Decred. This will all be agreed upon via consensus of the community in the work channels, and materials will be distributed.
Next, work is being done to identify the right PR partner to help with media relations, media training, and coordination at events. While all of this is coming up to speed, we believe the website needs a refresher reflecting the soon to be agreed upon messaging, plus a more intuitive architecture to make it easier to navigate. (@Dustorf)

Events

Attended:
Upcoming:
We'll begin shortly reviewing conferences and events planned for the first half of 2019. Highlights are sure to include The North American Bitcoin Conference in Miami (Jan 16-18) and Consensus in NYC (May 14-16). If you have suggestions of events or conferences Decred should attend, please share them in #event_planning. In 2019, we would like to expand our presence in Europe, Asia, and South America, and we're looking for community members to help identify and staff those events. (@Dustorf)

Media

August issue of Decred Journal was translated to Russian. Many thanks to @DZ!
Rency cryptocurrency ratings published a report on Decred and incorporated a lot of feedback from the community on Reddit.
September issue of Chinese CCID ratings was published (snapshot), Decred is still at the bottom.
Videos:
Featured articles:
Articles:

Community Discussions

Community stats:
Comm systems news: Several work channels were migrated to Matrix, #writers_room is finally bridged.
Highlights:
Twitter: why decentralized governance and funding are necessary for network survival and the power of controlling the narrative; learning about governance more broadly by watching its evolution in cryptocurrency space, importance of community consensus and communications infrastructure.
Reddit: yet another strong pitch by @solar; question about buyer protections; dcrtime internals; a proposal to sponsor hoodies in the University of Cape Town; Lightning Network support for altcoins.
Chats: skills to operate a stakepool; voting details: 2 of 3 votes can approve a block, what votes really approve are regular tx, etc; scriptless script atomic swaps using Schnorr adaptor signatures; dev dashboard, choosing work, people do best when working on what interests them most; opportunities for governments and enterprise for anchoring legal data to blockchain; terminology: DAO vs DAE; human-friendly payments, sharing xpub vs payment protocols; funding btcsuite development; Politeia vote types: approval vote, sentiment vote and a defund vote, also linking proposals and financial statements; algo trading and programming languages (yes, on #trading!); alternative implementation, C/C++/Go/Rust; HFTs, algo trading, fake volume and slippage; offline wallets, usb/write-only media/optical scanners vs auditing traffic between dcrd and dcrwallet; Proof of Activity did not inspire Decred but spurred Decred to get moving, Wikipedia page hurdles; how stakeholders could veto blocks; how many votes are needed to approve a proposal; why Decrediton uses Electron; CVE-2018-17144 and over-dependence on single Bitcoin implementation, btcsuite, fuzz testing; tracking proposal progress after voting and funding; why the wallet does not store the seed at all; power connectors, electricity, wiring and fire safety; reasonable spendings from project fund; ways to measure sync progress better than block height; using Politeia without email address; concurrency in Go, locks vs channels.
#support is not often mentioned, but it must be noted that every day on this channel people get high quality support. (@bee: To my surprise, even those poor souls running Windows 10. My greatest respect to the support team!)

Markets

In September DCR was trading in the range of USD 34-45 / BTC 0.0054-0.0063. On Sep 6, DCR revisited the bottom of USD 34 / BTC 0.0054 when BTC quickly dropped from USD 7,300 to 6,400. On Sep 14, a small price rise coincided with both the start of KuCoin trading and hashrate spike to 104 PH/s. Looking at coinmarketcap charts, the trading volume is a bit lower than in July and August.
As of Oct 4, Decred is #18 by the number of daily transactions with 3,200 tx, and #9 by the USD value of daily issuance with $230k. (source: onchainfx)
Interesting observation by @ImacallyouJawdy: while we sit at 2018 price lows the amount locked in tickets is testing 2018 high.

Relevant External

ASIC for Lyra2REv2 was spotted on the web. Vertcoin team is preparing a new PoW algorithm. This would be the 3rd fork after two previous forks to change the algorithm in 2014 and 2015.
A report titled The Positive Externalities of Bitcoin Mining discusses the benefits of PoW mining that are often overlooked by the critics of its energy use.
A Brief Study of Cryptonetwork Forks by Alex Evans of Placeholder studies the behavior of users, developers and miners after the fork, and makes the cases that it is hard for child chains to attract users and developers from their parent chains.
New research on private atomic swaps: the paper "Anonymous Atomic Swaps Using Homomorphic Hashing" attempts to break the public link between two transactions. (bitcointalk, decred)
On Sep 18 Poloniex announced delisting of 8 more assets. That day they took a 12-80% dive showing their dependence on this one exchange.
Circle introduced USDC markets on Poloniex: "USDC is a fully collateralized US dollar stablecoin using the ERC-20 standard that provides detailed financial and operational transparency, operates within the regulated framework of US money transmission laws, and is reinforced by established banking partners and auditors.".
Coinbase announced new asset listing process and is accepting submissions on their listing portal. (decred)
The New York State Office of the Attorney General posted a study of 13 exchanges that contains many insights.
A critical vulnerability was discovered and fixed in Bitcoin Core. Few days later a full disclosure was posted revealing the severity of the bug. In a bitcointalk thread btcd was called 'amateur' despite not being vulnerable, and some Core developers voiced their concerns about multiple implementations. The Bitcoin Unlimited developer who found the bug shared his perspective in a blog post. Decred's vision so far is that more full node implementations is a strength, just like for any Internet protocol.

About This Issue

This is the 6th issue of Decred Journal. It is mirrored on GitHub, Medium and Reddit. Past issues are available here.
Most information from third parties is relayed directly from source after a minimal sanity check. The authors of Decred Journal have no ability to verify all claims. Please beware of scams and do your own research.
Feedback is appreciated: please comment on Reddit, GitHub or #writers_room on Matrix or Slack.
Contributions are also welcome: some areas are adding content, pre-release review or translations to other languages.
Credits (Slack names, alphabetical order): bee, Dustorf, jz, Haon, oregonisaac, raedah and Richard-Red.
submitted by jet_user to decred [link] [comments]

Decred Journal — May 2018

Note: New Reddit look may not highlight links. See old look here. A copy is hosted on GitHub for better reading experience. Check it out, contains photo of the month! Also on Medium

Development

dcrd: Significant optimization in signature hash calculation, bloom filters support was removed, 2x faster startup thanks to in-memory full block index, multipeer work advancing, stronger protection against majority hashpower attacks. Additionally, code refactoring and cleanup, code and test infrastructure improvements.
In dcrd and dcrwallet developers have been experimenting with new modular dependency and versioning schemes using vgo. @orthomind is seeking feedback for his work on reproducible builds.
Decrediton: 1.2.1 bugfix release, work on SPV has started, chart additions are in progress. Further simplification of the staking process is in the pipeline (slack).
Politeia: new command line tool to interact with Politeia API, general development is ongoing. Help with testing will soon be welcome: this issue sets out a test plan, join #politeia to follow progress and participate in testing.
dcrdata: work ongoing on improved design, adding more charts and improving Insight API support.
Android: design work advancing.
Decred's own DNS seeder (dcrseeder) was released. It is written in Go and it properly supports service bit filtering, which will allow SPV nodes to find full nodes that support compact filters.
Ticket splitting service by @matheusd entered beta and demonstrated an 11-way split on mainnet. Help with testing is much appreciated, please join #ticket_splitting to participate in splits, but check this doc to learn about the risks. Reddit discussion here.
Trezor support is expected to land in their next firmware update.
Decred is now supported by Riemann, a toolbox from James Prestwich to construct transactions for many UTXO-based chains from human-readable strings.
Atomic swap with Ethereum on testnet was demonstrated at Blockspot Conference LATAM.
Two new faces were added to contributors page.
Dev activity stats for May: 238 active PRs, 195 master commits, 32,831 added and 22,280 deleted lines spread across 8 repositories. Contributions came from 4-10 developers per repository. (chart)

Network

Hashrate: rapid growth from ~4,000 TH/s at the beginning of the month to ~15,000 at the end with new all time high of 17,949. Interesting dynamic in hashrate distribution across mining pools: coinmine.pl share went down from 55% to 25% while F2Pool up from 2% to 44%. [Note: as of June 6, the hashrate continues to rise and has already passed 22,000 TH/s]
Staking: 30-day average ticket price is 91.3 DCR (+0.8), stake participation is 46.9% (+0.8%) with 3.68 million DCR locked (+0.15). Min price was 85.56. On May 11 ticket price surged to 96.99, staying elevated for longer than usual after such a pump. Locked DCR peaked at 47.17%. jet_user on reddit suggested that the DCR for these tickets likely came from a miner with significant hashrate.
Nodes: there are 226 public listening and 405 normal nodes per dcred.eu. Version distribution: 45% on v1.2.0 (up from 24% last month), 39% on v1.1.2, 15% on v1.1.0 and 1% running outdaded versions.

ASICs

Obelisk team posted an update. Current hashrate estimate of DCR1 is 1200 GH/s at 500 W and may still change. The chips came back at 40% the speed of the simulated results, it is still unknown why. Batch 1 units may get delayed 1-2 weeks past June 30. See discussions on decred and on siacoin.
@SiaBillionaire estimated that 7940 DCR1 units were sold in Batches 1-5, while Lynmar13 shared his projections of DCR1 profitability (reddit).
A new Chinese miner for pre-order was noticed by our Telegram group. Woodpecker WB2 specs 1.5 TH/s at 1200 W, costs 15,000 CNY (~2,340 USD) and the initial 150 units are expected to ship on Aug 15. (pow8.comtranslated)
Another new miner is iBelink DSM6T: 6 TH/s at 2100 W costing $6,300 (ibelink.co). Shipping starts from June 5. Some concerns and links were posted in these two threads.

Integrations

A new mining pool is available now: altpool.net. It uses PPLNS model and takes 1% fee.
Another infrastructure addition is tokensmart.io, a newly audited stake pool with 0.8% fee. There are a total of 14 stake pools now.
Exchange integrations:
OpenBazaar released an update that allows one to trade cryptocurrencies, including DCR.
@i2Rav from i2trading is now offering two sided OTC market liquidity on DCUSD in #trading channel.
Paytomat, payments solution for point of sale and e-commerce, integrated Decred. (missed in April issue)
CoinPayments, a payment processor supporting Decred, developed an integration with @Shopify that allows connected merchants to accept cryptocurrencies in exchange for goods.

Adoption

New merchants:
An update from VotoLegal:
michae2xl: Voto Legal: CEO Thiago Rondon of Appcívico, has already been contacted by 800 politicians and negotiations have started with four pre-candidates for the presidency (slack, source tweet)
Blockfolio rolled out Signal Beta with Decred in the list. Users who own or watch a coin will automatically receive updates pushed by project teams. Nice to see this Journal made it to the screenshot!
Placeholder Ventures announced that Decred is their first public investment. Their Investment Thesis is a clear and well researched overview of Decred. Among other great points it noted the less obvious benefit of not doing an ICO:
By choosing not to pre-sell coins to speculators, the financial rewards from Decred’s growth most favor those who work for the network.
Alex Evans, a cryptoeconomics researcher who recently joined Placeholder, posted his 13-page Decred Network Analysis.

Marketing

@Dustorf published March–April survey results (pdf). It analyzes 166 responses and has lots of interesting data. Just an example:
"I own DECRED because I saw a YouTube video with DECRED Jesus and after seeing it I was sold."
May targeted advertising report released. Reach @timhebel for full version.
PiedPiperCoin hired our advisors.
More creative promos by @jackliv3r: Contributing, Stake Now, The Splitting, Forbidden Exchange, Atomic Swaps.
Reminder: Stakey has his own Twitter account where he tweets about his antics and pours scorn on the holders of expired tickets.
"Autonomy" coin sculpture is available at sigmasixdesign.com.

Events

BitConf in Sao Paulo, Brazil. Jake Yocom-Piatt presented "Decentralized Central Banking". Note the mini stakey on one of the photos. (articletranslated, photos: 1 2 album)
Wicked Crypto Meetup in Warsaw, Poland. (video, photos: 1 2)
Decred Polska Meetup in Katowice, Poland. First known Decred Cake. (photos: 1 2)
Austin Hispanic Hackers Meetup in Austin, USA.
Consensus 2018 in New York, USA. See videos in the Media section. Select photos: booth, escort, crew, moon boots, giant stakey. Many other photos and mentions were posted on Twitter. One tweet summarized Decred pretty well:
One project that stands out at #Consensus2018 is @decredproject. Not annoying. Real tech. Humble team. #BUIDL is strong with them. (@PallerJohn)
Token Summit in New York, USA. @cburniske and @jmonegro from Placeholder talked "Governance and Cryptoeconomics" and spoke highly of Decred. (twitter coverage: 1 2, video, video (from 32 min))
Campus Party in Bahia, Brazil. João Ferreira aka @girino and Gabriel @Rhama were introducing Decred, talking about governance and teaching to perform atomic swaps. (photos)
Decred was introduced to the delegates from Shanghai's Caohejing Hi-Tech Park, organized by @ybfventures.
Second Decred meetup in Hangzhou, China. (photos)
Madison Blockchain in Madison, USA. "Lots of in-depth questions. The Q&A lasted longer than the presentation!". (photo)
Blockspot Conference Latam in Sao Paulo, Brazil. (photos: 1, 2)
Upcoming events:
There is a community initiative by @vj to organize information related to events in a repository. Jump in #event_planning channel to contribute.

Media

Decred scored B (top 3) in Weiss Ratings and A- (top 8) in Darpal Rating.
Chinese institute is developing another rating system for blockchains. First round included Decred (translated). Upon release Decred ranked 26. For context, Bitcoin ranked 13.
Articles:
Audios:
Videos:

Community Discussions

Community stats: Twitter 39,118 (+742), Reddit 8,167 (+277), Slack 5,658 (+160). Difference is between May 5 and May 31.
Reddit highlights: transparent up/down voting on Politeia, combining LN and atomic swaps, minimum viable superorganism, the controversial debate on Decred contractor model (people wondered about true motives behind the thread), tx size and fees discussion, hard moderation case, impact of ASICs on price, another "Why Decred?" thread with another excellent pitch by solar, fee analysis showing how ticket price algorithm change was controversial with ~100x cut in miner profits, impact of ticket splitting on ticket price, recommendations on promoting Decred, security against double spends and custom voting policies.
@R3VoLuT1OneR posted a preview of a proposal from his company for Decred to offer scholarships for students.
dcrtrader gained a couple of new moderators, weekly automatic threads were reconfigured to monthly and empty threads were removed. Currently most trading talk happens on #trading and some leaks to decred. A separate trading sub offers some advantages: unlimited trading talk, broad range of allowed topics, free speech and transparent moderation, in addition to standard reddit threaded discussion, permanent history and search.
Forum: potential social attacks on Decred.
Slack: the #governance channel created last month has seen many intelligent conversations on topics including: finite attention of decision makers, why stakeholders can make good decisions (opposed to a common narrative than only developers are capable of making good decisions), proposal funding and contractor pre-qualification, Cardano and Dash treasuries, quadratic voting, equality of outcome vs equality of opportunity, and much more.
One particularly important issue being discussed is the growing number of posts arguing that on-chain governance and coin voting is bad. Just a few examples from Twitter: Decred is solving an imagined problem (decent response by @jm_buirski), we convince ourselves that we need governance and ticket price algo vote was not controversial, on-chain governance hurts node operators and it is too early for it, it robs node operators of their role, crypto risks being captured by the wealthy, it is a huge threat to the whole public blockchain space, coin holders should not own the blockchain.
Some responses were posted here and here on Twitter, as well as this article by Noah Pierau.

Markets

The month of May has seen Decred earn some much deserved attention in the markets. DCR started the month around 0.009 BTC and finished around 0.0125 with interim high of 0.0165 on Bittrex. In USD terms it started around $81 and finished around $92, temporarily rising to $118. During a period in which most altcoins suffered, Decred has performed well; rising from rank #45 to #30 on Coinmarketcap.
The addition of a much awaited KRW pair on Upbit saw the price briefly double on some exchanges. This pair opens up direct DCR to fiat trading in one of the largest cryptocurrency markets in the world.
An update from @i2Rav:
We have begun trading DCR in large volume daily. The interest around DCR has really started to grow in terms of OTC quote requests. More and more customers are asking about trading it.
Like in previous month, Decred scores high by "% down from ATH" indicator being #2 on onchainfx as of June 6.

Relevant External

David Vorick (@taek) published lots of insights into the world of ASIC manufacturing (reddit). Bitmain replied.
Bitmain released an ASIC for Equihash (archived), an algorithm thought to be somewhat ASIC-resistant 2 years ago.
Three pure PoW coins were attacked this month, one attempting to be ASIC resistant. This shows the importance of Decred's PoS layer that exerts control over miners and allows Decred to welcome ASIC miners for more PoW security without sacrificing sovereignty to them.
Upbit was raided over suspected fraud and put under investigation. Following news reported no illicit activity was found and suggested and raid was premature and damaged trust in local exchanges.
Circle, the new owner of Poloniex, announced a USD-backed stablecoin and Bitmain partnership. The plan is to make USDC available as a primary market on Poloniex. More details in the FAQ.
Poloniex announced lower trading fees.
Bittrex plans to offer USD trading pairs.
@sumiflow made good progress on correcting Decred market cap on several sites:
speaking of market cap, I got it corrected on coingecko, cryptocompare, and worldcoinindex onchainfx, livecoinwatch, and cryptoindex.co said they would update it about a month ago but haven't yet I messaged coinlib.io today but haven't got a response yet coinmarketcap refused to correct it until they can verify certain funds have moved from dev wallets which is most likely forever unknowable (slack)

About This Issue

Some source links point to Slack messages. Although Slack hides history older than ~5 days, you can read individual messages if you paste the message link into chat with yourself. Digging the full conversation is hard but possible. The history of all channels bridged to Matrix is saved in Matrix. Therefore it is possible to dig history in Matrix if you know the timestamp of the first message. Slack links encode the timestamp: https://decred.slack.com/archives/C5H9Z63AA/p1525528370000062 => 1525528370 => 2018-05-05 13:52:50.
Most information from third parties is relayed directly from source after a minimal sanity check. The authors of Decred Journal have no ability to verify all claims. Please beware of scams and do your own research.
Your feedback is precious. You can post on GitHub, comment on Reddit or message us in #writers_room channel.
Credits (Slack names, alphabetical order): bee, Richard-Red, snr01 and solar.
submitted by jet_user to decred [link] [comments]

PSA: (non) existing Hong Kong agreement expires officially TODAY!

CURRENT DATE IN HONG KONG: SATURDAY, 18 FEBRUARY 2017. THE HK AGREEMENT HAS EXPIRED.
Miners, Your Turn!

"The undersigned support this roadmap. Together, we are:

Kevin Pan Manager - AntPool

Anatoly Legkodymov CEO - A-XBT

Larry Salibra - Bitcoin Association Hong Kong

Leonhard Weese - Bitcoin Association Hong Kong

Cory Fields - Bitcoin Core Contributor

Johnson Lau - Bitcoin Core Contributor

Luke Dashjr - Bitcoin Core Contributor

Matt Corallo - Bitcoin Core Contributor

Peter Todd - Bitcoin Core Contributor

Kang Xie - Bitcoin Roundtable

Phil Potter - Chief Strategy Officer Bitfinex

Valery Vavilov - CEO BitFury

Alex Petrov - CIO BitFury

Jihan Wu - Co-CEO Bitmain

Micree Zhan - Co-CEO Bitmain

James Hilliard - Pool/Farm Admin BitmainWarranty

Yoshi Goto - CEO BitmainWarranty

Alex Shultz - CEO BIT-X Exchange

Han Solo - CEO Blockcloud

Adam Back - President Blockstream -> Individual -> President Blockstream

Bobby Lee - CEO BTCC

Samsung Mow - COO BTCC -> Professional Twitter Troll -> Former COO BTCC 😕

Robin Yao - CTO BW

Obi Nwosu - Managing Director Coinfloor

Mark Lamb - Founder Coinfloor

Wang Chun - Admin F2Pool

Marco Streng - CEO Genesis Mining

Marco Krohn - CFO Genesis Mining

Oleksandr Lutskevych - CEO GHash.IO & CEX.IO

Wu Gang - CEO HaoBTC

Leon Li - CEO Huobi

Zhang Jian - Vice President Huobi

Eric Larchevêque - CEO Ledger

Jack Liao - CEO LIGHTNINGASIC & BitExchange

Star Xu - CEO OKCoin

Jack Liu - Head of International OKCoin

Guy Corem - CEO Spondoolies-Tech

Pindar Wong - Sponsor"

source
background story
submitted by Egon_1 to btc [link] [comments]

Released List of Satoshi Roundtable Attendees Gathering this Weekend

Satoshi Roundtable II
This weekend a group of blockchain and bitcoin industry leaders gather again for the Satoshi Roundtable (satoshiroundtable.org) retreat. Participants in the second Satoshi Roundtable include developers, CEOs, investors, adopters and influencers from the blockchain and bitcoin world.
The retreat is limited to approximately 75 attendees and designed to encourage organic, participant-driven discussion free of the distractions of a conference.
Sessions include several topics of overall blockchain interest and a roundtable discussion on bitcoin capacity.
Please provide any suggestions you have for areas of discussion/ focus.
Partial list of confirmed participants:
Gabriel Abed, CEO, Bitt Charles Allen, CEO, BTCS Gavin Andresen, MIT / Bitcoin Foundation Adam Back, President, Blockstream David Bailey, CEO, yBitcoins Mike Belshe, CEO, BitGo Patrick Byrne, CEO, Overstock / T0 Michael Cao, CEO, zoomhash Dave Carlson, CEO, Mega Big Power Daniel Castagnoli, CCO Exodus Sam Cole, CEO, KNC Miner Matt Corallo, Core Developer Luke Dashjr, Core Developer Anthony Di Iorio, CDO-Toronto Stock Exchange, Founder-Ethereum/Decentral/Kryptokit Joe Disorbo, CEO, Webgistix Jason Dorsett, Early Adopter Evan Duffield, FoundeLead Scientist, Dash Andrew “Flip” Filipowski, Partne Co-Founder, Tally Capital Thomas France, Founder, Ledger Jeff Garzik, Founder, Bloq Yifo Guo, Tech Develope Early Adopter David Johnston, Chairman, Factom Samy Kamkar, Super Hacker Alyse Killeen, Partner, Venture Capital Investor Jason King, Founder, Unsung Mike Komaransky, Cumberland Mining Peter Kroll, Founder, bitaddress.org Bobby Lee, CEO, BTC China, Vice-Chairman of the Board, Bitcoin Foundation Charlie Lee, Director of Engineering, Coinbase/Founder of Litecoin Eric Lombrozo, Founder, Ciphrex Corp / Developer Marshall Long, CTO, Final Hash Matt Luongo, CEO, Fold Jake Mazulewicz, Ph.D. JMA Associates (guest speaker) Human performance researcher Halsey Minor, CEO, Uphold / Founder of CNet Alex Morcos, Hudson Trading/ Core Developer Neha Narula, MIT, Director of DCI – Digital Currency Initiative Dawn Newton, Co-Founder, COO, Netki Justin Newton, Founder CEO, Netki Stephen Pair, Co-FoundeCEO, BitPay Inc. Michael Perklin, President, C4 – CryptoCurrency Certification Consortium / Board Member, Bitcoin Foundation Alex Petrov, CIO, BitFury Phil Potter, CFA, Bitfinex Francis Pouliot, Director, Bitcoin Embassy, Board Member, Bitcoin Foundation JP Richardson, Chief Technical Officer, Exodus Jamie Robinson, QuickBt Jez San, Angel Investor Marco Santori, Partner, Pillsbury Scott Scalf, EVP/Head of Tech Team, Alpha Point Craig Sellars, CTO, Tether Ryan Shea, Co-Founder, One Name Greg Simon, CEO & Co-Founder Ribbit! Me / President, Bitcoin Association Paul Snow, CEO Factom, Texas Bitcoin Conference Riccardo Spagni, Monero Nick Spanos, Founder, Bitcoin Center NYC Elizabeth Stark, Co-Founder & CEO, Lightning Marco Streng, CEO, Genesis Mining Nick Sullivan, CEO, ChangeTip Paul Sztorc, Truthcoin Michael Terpin, CEO, Transform Group Peter Todd, Core Developer Joseph Vaughn Perling, New Liberty Dollar Roger Ver, CEO, Memory Dealers / Bitcoin.com Aaron Voisine, CEO, Breadwallet Zooko Wilcox, CEO, Z Cash Shawn Wilkinson, Founder, Storj Micah Winkelspecht, CEO, Gem
Also, representatives from Blockchain, Bain Capital Ventures, Mycelium, Fidelity Investments and others.
submitted by bruce_fenton to Bitcoin [link] [comments]

Strategies for quantum races

arXiv:1809.03671
Date: 2018-09-27
Author(s): Troy Lee, Maharshi Ray, Miklos Santha

Link to Paper


Abstract
We initiate the study of quantum races, games where two or more quantum computers compete to solve a computational problem. While the problem of dueling algorithms has been studied for classical deterministic algorithms, the quantum case presents additional sources of uncertainty for the players. The foremost among these is that players do not know if they have solved the problem until they measure their quantum state. This question of `when to measure?' presents a very interesting strategic problem. We develop a game-theoretic model of a multiplayer quantum race, and find an approximate Nash equilibrium where all players play the same strategy. In the two-party case, we further show that this strategy is nearly optimal in terms of payoff among all symmetric Nash equilibria. A key role in our analysis of quantum races is played by a more tractable version of the game where there is no payout on a tie; for such races we completely characterize the Nash equilibria in the two-party case. One application of our results is to the stability of the Bitcoin protocol when mining is done by quantum computers. Bitcoin mining is a race to solve a computational search problem, with the winner gaining the right to create a new block. Our results inform the strategies that eventual quantum miners should use, and also indicate that the collision probability---the probability that two miners find a new block at the same time---would not be too high in the case of quantum miners. Such collisions are undesirable as they lead to forking of the Bitcoin blockchain.

References
[ABL+17] Divesh Aggarwal, Gavin Brennen, Troy Lee, Miklos Santha, and Marco Tomamichel. Quantum attacks on Bitcoin and how to prevent against them. Technical Report arXiv:1710.10377, arXiv, 2017.
[Bac02] Adam Back. Hashcash—a denial of service counter-measure, 2002. Available at: http://www.hashcash.org/papers/hashcash.pdf.
[Bit18] Bitmain. Bitmain Antminer S9. https://shop.bitmain.com/antminer_s9_asic_bitcoin_miner.html, 2018. Accessed 2018-02-16.
[BK17] Alex Biryukov and Dmitry Khovratovich. Equihash: Asymmetric proof-of-work based on the generalized birthday problem. Ledger, 2:1–30, 2017.
[But13] Vitalik Buterin. Bitcoin is not quantum safe, and how we can fix it when needed. https://bitcoinmagazine.com/articles/bitcoin-is-not-quantum-safe-and-how-we-can-fix-1375242150/, 2013.
[CL99] Miguel Castro and Barbara Liskov. Practical byzantine fault tolerance. In Third Symposium on Operating Systems Design and Implementation, 1999.
[DH08] Catalin Dohotaru and Peter Høyer. Exact quantum lower bound for grover’s problem. Technical Report arXiv:0810.3647, arXiv, 2008.
[Dor60] William S. Dorn. Duality in quadratic programming. Quarterly of applied mathematics, 18(2):155–162, 1960.
[EGS14] Ittay Eyal and Emin G¨un Sirer. Majority is not enough: Bitcoin mining is vulnerable. In 18th International Conference on Financial Cryptography and Data Security, 2014.
[GKW+16] Arthur Gervais, Ghassan Karame, Karl W¨ust, Vasileios Glykantzis, Hubert Ritzdorf, and Srdjan Capkun. On the security and performance of proof of work blockchains. In Proceedings of the 2016 ACM SIGSAC Conference on Compute and Communications Security (CCS’16), pages 3–16, 2016.
[Gro96] Lov K. Grover. A fast quantum mechanical algorithm for database search. In Proceedings of the Twenty-eighth Annual ACM Symposium on Theory of Computing, STOC ’96, pages 212–219, New York, NY, USA, 1996. ACM.
[IKL+11] Nicole Immorlica, Adam Tauman Kalai, Brendan Lucier, Ankur Moitra, Andrew Postlewaite, and Moshe Tennenholtz. Dueling algorithms. In Proceedings of the forty-third annual ACM symposium on theory of computing (STOC’11), pages 215–224, 2011.
[KRDO17] Aggelos Kiayias, Alexander Russell, Bernardo David, and Roman Oliynykov. Ouroboros: A provably secure proof-of-stake blockchain protocol. In CRYPTO, pages 357–388, 2017.
[MS64] Olvi L. Mangasarian and H. Stone. Two-person nonzero-sum games and quadratic programming. Journal of mathematical analysis and applications, 9:348–355, 1964.
[Nak09] Satoshi Nakamoto. Bitcoin: A peer-to-peer electronic cash system, 2009. Available at: http://www.bitcoin.org/pdf.
[Nas51] John F. Nash. Non-cooperative games. Annals of Mathematics, 54(2):286–295, 1951.
[Sat18] Or Sattath. On the insecurity of quantum Bitcoin mining. Technical Report arXiv:1804.08118, arXiv, 2018. Appeared in QCRYPT 2018.
submitted by dj-gutz to myrXiv [link] [comments]

Bitcoin Core 0.14.1 released | Wladimir J. van der Laan | Apr 22 2017

Wladimir J. van der Laan on Apr 22 2017:
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
Bitcoin Core version 0.14.1 is now available from:
https://bitcoin.org/bin/bitcoin-core-0.14.1/
Or, by torrent:
magnet:?xt=urn:btih:0482be8fc8e1c0b02162871e3591efc3d1d34585&dn;=bitcoin-core-0.14.1&tr;=udp%3A%2F%2Fpublic.popcorn-tracker.org%3A6969%2Fannounce&tr;=http%3A%2F%2Fatrack.pow7.com%2Fannounce&tr;=http%3A%2F%2Fbt.henbt.com%3A2710%2Fannounce&tr;=http%3A%2F%2Fmgtracker.org%3A6969%2Fannounce&tr;=http%3A%2F%2Fopen.touki.ru%2Fannounce.php&tr;=http%3A%2F%2Fp4p.arenabg.ch%3A1337%2Fannounce&tr;=http%3A%2F%2Fpow7.com%3A80%2Fannounce&tr;=http%3A%2F%2Ftracker.dutchtracking.nl%3A80%2Fannounce
This is a new minor version release, including various bugfixes and
performance improvements, as well as updated translations.
Please report bugs using the issue tracker at github:
https://github.com/bitcoin/bitcoin/issues
To receive security and update notifications, please subscribe to:
https://bitcoincore.org/en/list/announcements/join/
Compatibility

Bitcoin Core is extensively tested on multiple operating systems using
the Linux kernel, macOS 10.8+, and Windows Vista and later.
Microsoft ended support for Windows XP on April 8th, 2014,
No attempt is made to prevent installing or running the software on Windows XP, you
can still do so at your own risk but be aware that there are known instabilities and issues.
Please do not report issues about Windows XP to the issue tracker.
Bitcoin Core should also work on most other Unix-like systems but is not
frequently tested on them.
Notable changes

RPC changes
These interface changes break compatibility with 0.14.0, when the named
arguments functionality, introduced in 0.14.0, is used. Client software
using these calls with named arguments needs to be updated.
Mining
In previous versions, getblocktemplate required segwit support from downstream
clients/miners once the feature activated on the network. In this version, it
now supports non-segwit clients even after activation, by removing all segwit
transactions from the returned block template. This allows non-segwit miners to
continue functioning correctly even after segwit has activated.
Due to the limitations in previous versions, getblocktemplate also recommended
non-segwit clients to not signal for the segwit version-bit. Since this is no
longer an issue, getblocktemplate now always recommends signalling segwit for
all miners. This is safe because ability to enforce the rule is the only
required criteria for safe activation, not actually producing segwit-enabled
blocks.
UTXO memory accounting
Memory usage for the UTXO cache is being calculated more accurately, so that
the configured limit (-dbcache) will be respected when memory usage peaks
during cache flushes. The memory accounting in prior releases is estimated to
only account for half the actual peak utilization.
The default -dbcache has also been changed in this release to 450MiB. Users
who currently set -dbcache to a high value (e.g. to keep the UTXO more fully
cached in memory) should consider increasing this setting in order to achieve
the same cache performance as prior releases. Users on low-memory systems
(such as systems with 1GB or less) should consider specifying a lower value for
this parameter.
Additional information relating to running on low-memory systems can be found
here:
reducing-bitcoind-memory-usage.md.
0.14.1 Change log

Detailed release notes follow. This overview includes changes that affect
behavior, not code moves, refactors and string updates. For convenience in locating
the code changes and accompanying discussion, both the pull request and
git merge commit are mentioned.

RPC and other APIs

    • #10084 142fbb2 Rename first named arg of createrawtransaction (MarcoFalke)
    • #10139 f15268d Remove auth cookie on shutdown (practicalswift)
    • #10146 2fea10a Better error handling for submitblock (rawodb, gmaxwell)
    • #10144 d947afc Prioritisetransaction wasn't always updating ancestor fee (sdaftuar)
    • #10204 3c79602 Rename disconnectnode argument (jnewbery)

Block and transaction handling

    • #10126 0b5e162 Compensate for memory peak at flush time (sipa)
    • #9912 fc3d7db Optimize GetWitnessHash() for non-segwit transactions (sdaftuar)
    • #10133 ab864d3 Clean up calculations of pcoinsTip memory usage (morcos)

P2P protocol and network code

    • #9953/#10013 d2548a4 Fix shutdown hang with >= 8 -addnodes set (TheBlueMatt)
    • #10176 30fa231 net: gracefully handle NodeId wrapping (theuni)

Build system

  • - #9973 e9611d1 depends: fix zlib build on osx (theuni)

GUI

  • - #10060 ddc2dd1 Ensure an item exists on the rpcconsole stack before adding (achow101)

Mining

    • #9955/#10006 569596c Don't require segwit in getblocktemplate for segwit signalling or mining (sdaftuar)
    • #9959/#10127 b5c3440 Prevent slowdown in CreateNewBlock on large mempools (sdaftuar)

Tests and QA

  • - #10157 55f641c Fix the mempool_packages.py test (sdaftuar)

Miscellaneous

    • #10037 4d8e660 Trivial: Fix typo in help getrawtransaction RPC (keystrike)
    • #10120 e4c9a90 util: Work around (virtual) memory exhaustion on 32-bit w/ glibc (laanwj)
    • #10130 ecc5232 bitcoin-tx input verification (awemany, jnewbery)
Credits

Thanks to everyone who directly contributed to this release:
    • Alex Morcos
    • Andrew Chow
    • Awemany
    • Cory Fields
    • Gregory Maxwell
    • James Evans
    • John Newbery
    • MarcoFalke
    • Matt Corallo
    • Pieter Wuille
    • practicalswift
    • rawodb
    • Suhas Daftuar
    • Wladimir J. van der Laan
As well as everyone that helped translating on Transifex.
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original: https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2017-April/014228.html
submitted by dev_list_bot to bitcoin_devlist [link] [comments]

received the same

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submitted by morethanStupid2 to Scams [link] [comments]

07-21 18:38 - '[quote] then why did the most influential leaders all agree to do a hardfork with a year lead up time? / [quote] [link] / Why did all these people disagree with you? / What changed u/theymos ? why is is more dangerous no...' by /u/AnonymousRev removed from /r/Bitcoin within 253-258min

'''
this sort of hardfork probably couldn't happen in today's Bitcoin
then why did the most influential leaders all agree to do a hardfork with a year lead up time?
The code for the hard-fork will therefore be available by July 2016.
[link]1
Why did all these people disagree with you?
What changed theymos ? why is is more dangerous now then ever?
Is it because of the bitch fit people had when miners mined classic blocks anyway? is the real danger you loosing control? and not really economic dangers of non full nodes.
It is really hypocritically to ban so many people and users for talking about this. Yet you are making posts and steering conversation on your viewpoint.
When really there is a long long long list of people who actually matter and disagree with you.
Kevin Pan Manager AntPool
Anatoly Legkodymov CEO A-XBT
Larry Salibra Bitcoin Association Hong Kong
Leonhard Weese Bitcoin Association Hong Kong
Cory Fields Bitcoin Core Contributor
Johnson Lau Bitcoin Core Contributor
Luke Dashjr Bitcoin Core Contributor
Matt Corallo Bitcoin Core Contributor
Peter Todd Bitcoin Core Contributor
Kang Xie Bitcoin Roundtable
Phil Potter Chief Strategy Officer Bitfinex
Valery Vavilov CEO BitFury
Alex Petrov CIO BitFury
Jihan Wu Co-CEO Bitmain
Micree Zhan Co-CEO Bitmain
James Hilliard Pool/Farm Admin BitmainWarranty
Yoshi Goto CEO BitmainWarranty
Alex Shultz CEO BIT-X Exchange
Han Solo CEO Blockcloud
Adam Back President Blockstream
Bobby Lee CEO BTCC
Samson Mow COO BTCC
Robin Yao CTO BW
Obi Nwosu Managing Director Coinfloor
Mark Lamb Founder Coinfloor
Wang Chun Admin F2Pool
Marco Streng CEO Genesis Mining
Marco Krohn CFO Genesis Mining
Oleksandr Lutskevych CEO GHash.IO & CEX.IO
Wu Gang CEO HaoBTC
Leon Li CEO Huobi
Zhang Jian Vice President Huobi
Eric Larchevêque CEO Ledger
Jack Liao CEO LIGHTNINGASIC & BitExchange
Star Xu CEO OKCoin
Jack Liu Head of International OKCoin
Guy Corem CEO Spondoolies-Tech
Pindar Wong Sponsor
'''
Context Link
Go1dfish undelete link
unreddit undelete link
Author: AnonymousRev
1: https://medium.com/@bitcoinroundtable/bitcoin-roundtable-consensus-266d475a61ff#.pw4crj5ke
submitted by removalbot to removalbot [link] [comments]

Bitcoin Core 0.12.1 released | Wladimir J. van der Laan | Apr 15 2016

Wladimir J. van der Laan on Apr 15 2016:
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
Bitcoin Core version 0.12.1 is now available from:
https://bitcoin.org/bin/bitcoin-core-0.12.1/
Or through bittorrent:
magnet:?xt=urn:btih:25c4df2a822e840e972a50a31095632d87efadab&dn;=bitcoin-core-0.12.1&tr;=udp%3A%2F%2Ftracker.openbittorrent.com%3A80%2Fannounce&tr;=udp%3A%2F%2Ftracker.publicbt.com%3A80%2Fannounce&tr;=udp%3A%2F%2Ftracker.ccc.de%3A80%2Fannounce&tr;=udp%3A%2F%2Ftracker.coppersurfer.tk%3A6969&tr;=udp%3A%2F%2Ftracker.leechers-paradise.org%3A6969&ws;=https%3A%2F%2Fbitcoin.org%2Fbin%2F
This is a new minor version release, including the BIP9, BIP68 and BIP112
softfork, various bugfixes and updated translations.
Please report bugs using the issue tracker at github:
https://github.com/bitcoin/bitcoin/issues
To receive security and update notifications, please subscribe to
https://bitcoincore.org/en/list/announcements/join/.
Upgrading and downgrading

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), then run the
installer (on Windows) or just copy over /Applications/Bitcoin-Qt (on Mac) or
bitcoind/bitcoin-qt (on Linux).
Downgrade warning

Downgrade to a version < 0.12.0

Because release 0.12.0 and later will obfuscate the chainstate on every
fresh sync or reindex, the chainstate is not backwards-compatible with
pre-0.12 versions of Bitcoin Core or other software.
If you want to downgrade after you have done a reindex with 0.12.0 or later,
you will need to reindex when you first start Bitcoin Core version 0.11 or
earlier.
Notable changes

First version bits BIP9 softfork deployment
This release includes a soft fork deployment to enforce BIP68,
BIP112 and BIP113 using the BIP9 deployment mechanism.
The deployment sets the block version number to 0x20000001 between
midnight 1st May 2016 and midnight 1st May 2017 to signal readiness for
deployment. The version number consists of 0x20000000 to indicate version
bits together with setting bit 0 to indicate support for this combined
deployment, shown as "csv" in the getblockchaininfo RPC call.
For more information about the soft forking change, please see
https://github.com/bitcoin/bitcoin/pull/7648
This specific backport pull-request can be viewed at
https://github.com/bitcoin/bitcoin/pull/7543
BIP68 soft fork to enforce sequence locks for relative locktime
BIP68 introduces relative lock-time consensus-enforced semantics of
the sequence number field to enable a signed transaction input to remain
invalid for a defined period of time after confirmation of its corresponding
outpoint.
For more information about the implementation, see
https://github.com/bitcoin/bitcoin/pull/7184
BIP112 soft fork to enforce OP_CHECKSEQUENCEVERIFY
BIP112 redefines the existing OP_NOP3 as OP_CHECKSEQUENCEVERIFY (CSV)
for a new opcode in the Bitcoin scripting system that in combination with
BIP68 allows execution pathways of a script to be restricted based
on the age of the output being spent.
For more information about the implementation, see
https://github.com/bitcoin/bitcoin/pull/7524
BIP113 locktime enforcement soft fork
Bitcoin Core 0.11.2 previously introduced mempool-only locktime
enforcement using GetMedianTimePast(). This release seeks to
consensus enforce the rule.
Bitcoin transactions currently may specify a locktime indicating when
they may be added to a valid block. Current consensus rules require
that blocks have a block header time greater than the locktime specified
in any transaction in that block.
Miners get to choose what time they use for their header time, with the
consensus rule being that no node will accept a block whose time is more
than two hours in the future. This creates a incentive for miners to
set their header times to future values in order to include locktimed
transactions which weren't supposed to be included for up to two more
hours.
The consensus rules also specify that valid blocks may have a header
time greater than that of the median of the 11 previous blocks. This
GetMedianTimePast() time has a key feature we generally associate with
time: it can't go backwards.
BIP113 specifies a soft fork enforced in this release that
weakens this perverse incentive for individual miners to use a future
time by requiring that valid blocks have a computed GetMedianTimePast()
greater than the locktime specified in any transaction in that block.
Mempool inclusion rules currently require transactions to be valid for
immediate inclusion in a block in order to be accepted into the mempool.
This release begins applying the BIP113 rule to received transactions,
so transaction whose time is greater than the GetMedianTimePast() will
no longer be accepted into the mempool.
Implication for miners: you will begin rejecting transactions that
would not be valid under BIP113, which will prevent you from producing
invalid blocks when BIP113 is enforced on the network. Any
transactions which are valid under the current rules but not yet valid
under the BIP113 rules will either be mined by other miners or delayed
until they are valid under BIP113. Note, however, that time-based
locktime transactions are more or less unseen on the network currently.
Implication for users: GetMedianTimePast() always trails behind the
current time, so a transaction locktime set to the present time will be
rejected by nodes running this release until the median time moves
forward. To compensate, subtract one hour (3,600 seconds) from your
locktimes to allow those transactions to be included in mempools at
approximately the expected time.
For more information about the implementation, see
https://github.com/bitcoin/bitcoin/pull/6566
Miscellaneous
The p2p alert system is off by default. To turn on, use -alert with
startup configuration.
0.12.1 Change log

Detailed release notes follow. This overview includes changes that affect
behavior, not code moves, refactors and string updates. For convenience in locating
the code changes and accompanying discussion, both the pull request and
git merge commit are mentioned.

RPC and other APIs

  • - #7739 7ffc2bd Add abandoned status to listtransactions (jonasschnelli)

Block and transaction handling

  • - #7543 834aaef Backport BIP9, BIP68 and BIP112 with softfork (btcdrak)

P2P protocol and network code

    • #7804 90f1d24 Track block download times per individual block (sipa)
    • #7832 4c3a00d Reduce block timeout to 10 minutes (laanwj)

Validation

    • #7821 4226aac init: allow shutdown during 'Activating best chain...' (laanwj)
    • #7835 46898e7 Version 2 transactions remain non-standard until CSV activates (sdaftuar)

Build system

    • #7487 00d57b4 Workaround Travis-side CI issues (luke-jr)
    • #7606 a10da9a No need to set -L and --location for curl (MarcoFalke)
    • #7614 ca8f160 Add curl to packages (now needed for depends) (luke-jr)
    • #7776 a784675 Remove unnecessary executables from gitian release (laanwj)

Wallet

  • - #7715 19866c1 Fix calculation of balances and available coins. (morcos)

Miscellaneous

    • #7617 f04f4fd Fix markdown syntax and line terminate LogPrint (MarcoFalke)
    • #7747 4d035bc added depends cross compile info (accraze)
    • #7741 a0cea89 Mark p2p alert system as deprecated (btcdrak)
    • #7780 c5f94f6 Disable bad-chain alert (btcdrak)
Credits

Thanks to everyone who directly contributed to this release:
    • accraze
    • Alex Morcos
    • BtcDrak
    • Jonas Schnelli
    • Luke Dashjr
    • MarcoFalke
    • Mark Friedenbach
    • NicolasDorier
    • Pieter Wuille
    • Suhas Daftuar
    • Wladimir J. van der Laan
As well as everyone that helped translating on Transifex.
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original: http://lists.linuxfoundation.org/pipermail/bitcoin-dev/2016-April/012607.html
submitted by dev_list_bot to bitcoin_devlist [link] [comments]

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