Long live decentralized bitcoin(!) A reading list : Bitcoin
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Long live decentralized bitcoin(!) A reading list
Newbs might not know this, but bitcoin recently came out of an intense internal drama. Between July 2015 and August 2017 bitcoin was attacked by external forces who were hoping to destroy the very properties that made bitcoin valuable in the first place. This culminated in the creation of segwit and the UASF (user activated soft fork) movement. The UASF was successful, segwit was added to bitcoin and with that the anti-decentralization side left bitcoin altogether and created their own altcoin called bcash. Bitcoin's price was $2500, soon after segwit was activated the price doubled to $5000 and continued rising until a top of $20000 before correcting to where we are today. During this drama, I took time away from writing open source code to help educate and argue on reddit, twitter and other social media. I came up with a reading list for quickly copypasting things. It may be interesting today for newbs or anyone who wants a history lesson on what exactly happened during those two years when bitcoin's very existence as a decentralized low-trust currency was questioned. Now the fight has essentially been won, I try not to comment on reddit that much anymore. There's nothing left to do except wait for Lightning and similar tech to become mature (or better yet, help code it and test it) In this thread you can learn about block sizes, latency, decentralization, segwit, ASICBOOST, lightning network and all the other issues that were debated endlessly for over two years. So when someone tries to get you to invest in bcash, remind them of the time they supported Bitcoin Unlimited. For more threads like this see UASF
A Chairman at World Economic Forumhttps://www.weforum.org/people/glenn-h-hutchins/https://archive.is/kubAYGlenn Hutchins is chairman of North Island and a co-founder of Silver Lake, the global leader in technology investing. He is a director of both AT&T and NASDAQ OMX; a director of the Federal Reserve Bank of New York; vice chairman of both the Brookings Institution and the Economic Club of New York; and a member of the Executive Committee of the New York Presbyterian Hospital. He is an owner and member of the Executive Committee of the Boston Celtics basketball team. Mr. Hutchins is a director of the Harvard Management Company, which is responsible for the Harvard University endowment, and co-chairman of the University’s capital campaign. He is also a board member of the Center for American Progress as well as a Fellow of the American Academy of Arts and Sciences. Previously, Mr. Hutchins served President Clinton in both the transition and the White House as a special advisor on economic and health-care policy. He was also previously chairman of the board of SunGard Data Systems, Inc. and Instinet, Inc. Mr. Hutchins and his wife, Debbie, founded the Hutchins Family Foundation which, among other projects, has created the Hutchins Center for African and African-American Research at Harvard University, which is chaired by Mr. Hutchins; the Hutchins Center on Fiscal and Monetary Policy at The Brookings Institution; and the Chronic Fatigue Initiative, which conducts basic research into the cause of chronic fatigue syndrome.
Advisory Board Larry Summers
Born in New Haven, Connecticut, Summers became a professor of economics at Harvard University in 1983. He left Harvard in 1991, working as the Chief Economist at the World Bank from 1991 to 1993. In 1993, Summers was appointed Undersecretary for International Affairs of the United States Department of the Treasury under the Clinton Administration. In 1995, he was promoted to Deputy Secretary of the Treasury under his long-time political mentor Robert Rubin. In 1999, he succeeded Rubin as Secretary of the Treasury. While working for the Clinton administration Summers played a leading role in the American response to the 1994 economic crisis in Mexico, the 1997 Asian financial crisis, and the Russian financial crisis. He was also influential in the American advised privatization of the economies of the post-Soviet states, and in the deregulation of the U.S financial system, including the repeal of the Glass-Steagall Act.
Following the end of Clinton's term, Summers served as the 27th President of Harvard University from 2001 to 2006. Summers resigned as Harvard's president in the wake of a no-confidence vote by Harvard faculty, which resulted in large part from Summers's conflict with Cornel West, financial conflict of interest questions regarding his relationship with Andrei Shleifer, and a 2005 speech in which he suggested that the under-representation of women in science and engineering could be due to a "different availability of aptitude at the high end," and less to patterns of discrimination and socialization.
After his departure from Harvard, Summers worked as a managing partner at the hedge fund D. E. Shaw & Co., and as a freelance speaker at other financial institutions, including Goldman Sachs, JPMorgan Chase, Citigroup, Merrill Lynch and Lehman Brothers. Summers rejoined public service during the Obama administration, serving as the Director of the White House United States National Economic Council for President Barack Obama from January 2009 until November 2010, where he emerged as a key economic decision-maker in the Obama administration's response to the Great Recession. After his departure from the NEC in December 2010, Summers has worked in the private sector and as a columnist in major newspapers. In mid-2013, his name was widely floated as the potential successor to Ben Bernanke as the Chairman of the Federal Reserve, though after pushback from the left, Obama eventually nominated Federal Reserve Vice-Chairwoman Janet Yellen for the position.
DCG of course is an investor in both Blockstream and BTCC. DCG's money comes from:
Bain Capital Group
New York Life
Novel TMT Ventures
Solon Mack Capital
The Whittemore Collection
HCM International Co
DCG also owns Coindesk. BTCC and Bitfury are the only two large mining pools who are outspoken in their support of Bitcoin Core. The Bitfury Group Leadership to Present at Clinton Global Initiative (https://archive.is/MWKee) Full Video (Begins at 32:00) “The Bitfury Group is proud to be the world’s leading full service Blockchain technology company, we are deeply honored to represent this innovation to an audience of extremely dedicated game-changers, and we look forward to highlighting our company’s groundbreaking ‘Blockchain for global good’ work at such an important event, said Smith. “From the White House to the Blockchain, I know this technology has the power to deliver inclusion and opportunity to millions, if not billions, of people around the world and I am so grateful to work for a company focused on such a principled vision.” Bitfury Lightning Implementation
ACINQ’s US Headquarters is in Vienna, Virginia, a small town of only 16,000. Why would a global financial firm choose to locate here? -- Feeder community into Washington, D.C. Has an orange line metro stop. -- Located in Fairfax County, VA. -- The US Federal Government is the #2 largest employer -- Booz Allen Hamilton (NSA front company) is #6 largest employer -- In fact, most of the top employers in Fairfax County are either US Federal Gov’t or companies that provide services to Federal Government -- The county is home to the headquarters of intelligence agencies such as the Central Intelligence Agency, National Geospatial-Intelligence Agency, and National Reconnaissance Office, as well as the National Counterterrorism Center and Office of the Director of National Intelligence.
Chairman: Avinash Vashistha
Former Chairman and CEO of Accenture in India
He has worked with numerous clients in Banking, Investment and Financial services - General Atlantic, Goldman Sachs, Warbug Pincus, JP Morgan Chase, Visa, Citi Ventures, Baird Capital, Norges Bank, UBS, AXA and has advised World Bank, IDB, ADB, USAID and other multi-lateral agencies over the last 20 years on country strategy and investments across Asia and Latin America.
From 1986-1993 he worked for Information Management Consultants (imc) Ltd as a Technical Consultant with various federal government agencies. McLean, Virginia
1993-2000 Technical Consultant for Freddie Mac, in McLean Virginia
From 2000-2007, President of InterPro Global in Maryland
From 2011-2012, Director of VibbleTV in Columbia, Maryland
From 2008-Present has been Executive Director at ACINQ and Managing Partner at Vine Management, both in Vienna, Virginia.
BitFury Enhances Its Advisory Board by Adding Former CFTC Chairman Dr. James Newsome and Renowned Global Thought Leader and President of the Institute for Liberty and Democracy Hernando de Soto (Businesswire) Bitfury Board of Directors Robert R Dykes
Former CFO at Juniper Networks from 2005-2007, which had an NSA backdoor added to router software.
Greg Maxwell spent “several years at Mozilla”, leaving in August 2014
The other board members include two Bitfury founders, and an investor. Bitfury Advisory Board James Newsome
Ex-chairman of CFTC
Dr. Newsome was nominated by President Clinton and confirmed by the Senate to be at first a Commissioner and later a Chairman of CFTC. As Chairman, Newsome guided the regulation of the nation’s futures markets. Additionally, Newsome led the CFTC’s regulatory implementation of the Commodity Futures Modernization Act of 2000 (CFMA). He also served as one of four members of the President’s Working Group for Financial Markets, along with the Secretary of the Treasury and the Chairmen of the Federal Reserve and the SEC. In 2004, Newsome assumed the role of President and Chief Executive Officer of the New York Mercantile Exchange (NYMEX) where he managed daily operations of the largest physical derivatives exchange in the world. Dr. Newsome is presently a founding partner of Delta Strategy Group, a full-service government affairs firm based in Washington, DC.
Hernando de Soto
Hernando de Soto heads the Institute for Liberty and Democracy, named by The Economist one of the two most important think tanks in the world. In the last 30 years, he and his colleagues at the ILD have been involved in designing and implementing legal reform programs to empower the poor in Africa, Asia, Latin America, the Middle East, and former Soviet nations by granting them access to the same property and business rights that the majority of people in developed countries have through the institutions and tools needed to exercise those rights and freedoms. Mr. de Soto also co-chaired with former US Secretary of State Madeleine Albright the Commission on Legal Empowerment of the Poor, and currently serves as honorary co-chair on various boards and organizations, including the World Justice Project. He is the author of “The Other Path: the Economic Answer to Terrorism”, and his seminal work “The Mystery of Capital: Why Capitalism Triumphs in the West and Fails Everywhere Else.”
Criticisms: -- In his 'Planet of Slums' Mike Davis argues that de Soto, who Davis calls 'the global guru of neo-liberal populism', is essentially promoting what the statist left in South America and India has always promoted—individual land titling. Davis argues that titling is the incorporation into the formal economy of cities, which benefits more wealthy squatters but is disastrous for poorer squatters, and especially tenants who simply cannot afford incorporation into the fully commodified formal economy. -- An article by Madeleine Bunting for The Guardian (UK) claimed that de Soto's suggestions would in some circumstances cause more harm than benefit, and referred to The Mystery of Capital as "an elaborate smokescreen" used to obscure the issue of the power of the globalized elite. She cited de Soto's employment history as evidence of his bias in favor of the powerful. https://www.theguardian.com/business/2000/sep/11/imf.commenthttp://www.slate.com/articles/news_and_politics/hey_wait_a_minute/2005/01/the_de_soto_delusion.html
Dr. Tomicah Tillemann is Director of the Bretton Woods II initiative. The initiative brings together a variety of long-term investors, with the goal of committing 1% of their assets to social impact investment and using investments as leverage to encourage global good governance. Tillemann served at the U.S. State Department in 2010 as the Senior Advisor on Civil Society and Emerging Democracies to Secretary Hillary Clinton and Secretary John Kerry. Tillemann came to the State Department as a speechwriter to Secretary Clinton in March 2009. Earlier, he worked for the Senate Foreign Relations Committee, where he was the principal policy advisor on Europe and Eurasia to Committee Chairmen, Senators Joe Biden and John Kerry. He also facilitated the work of the Senate's Subcommittee on European Affairs, then chaired by Senator Barack Obama. Tillemann received his B.A. magna cum laude from Yale University. He holds a Ph.D. with distinction from the School for Advanced International Studies at Johns Hopkins University (SAIS) where he also served as a graduate level instructor in American foreign policy.http://live.worldbank.org/node/8468https://archive.is/raDHA
Secretary Clinton appointed Tomicah Tillemann, Ph.D. as the State Department’s Senior Advisor for Civil Society and Emerging Democracies in October 2010. He continues his service under Secretary Kerry.
Mr. Tillemann and his team operate like venture capitalists, identifying ideas that can strengthen new democracies and civil society, and then bring together the talent, technology and resources needed to translate promising concepts into successful diplomacy. He and his team have developed over 20 major initiatives on behalf of the President and Secretary of State.
Mr. Tillemann came to the State Department as a speechwriter to Secretary Clinton in March 2009 and collaborated with her on over 200 speeches. Earlier, he worked for the Senate Foreign Relations Committee, where he was the principal policy advisor on Europe and Eurasia to Committee Chairmen, Senators Joe Biden and John Kerry. He also facilitated the work of the Senate's Subcommittee on European Affairs, then chaired by Senator Barack Obama. Mr. Tillemann’s other professional experience includes work with the White House Office of Media Affairs and five U.S. Senate and Congressional campaigns. He was a reporter with Reuters New Media and hosted a commercial radio program in Denver, Colorado.http://m.state.gov/md160354.htmhttps://www.newamerica.org/our-people/tomicah-tillemann/https://archive.is/u2yF0
Director of “Bretton Woods II” initiative at New America Foundation Bretton Woods was an international summit that led to the creation of the IMF and the IBRD, one of five members of The World Bank
Speaking to Clinton Global IntiativePrior to working at Edelman, my career has included serving as Deputy White House Press Secretary and Special Assistant to President Obama, Director of Public Affairs for the Office of the Director of National Intelligence, Director of Communications for the Senate Commerce, Science and Transportation Committee and its then Chairman Senator Rockefeller, Traveling Press Director for Secretary Hillary Clinton’s 2008 Presidential campaign, and Director of Communications for Secretary Madeleine K. Albright and her consulting firm, The Albright Group, LLC.https://medium.com/@jamieelizabethsmith/why-i-believe-in-the-blockchain-b19bf2014fab
Don Tapscott, co-author of the book “Blockchain Revolution,” hosted the meeting with his son and co-author Alex Tapscott at his family’s summer compound in Lake of Bays, Ontario. The group included some of blockchain’s biggest backers, including people with ties to IBM and JPMorgan. They considered ways to improve the governance and oversight of the technology behind the digital currency bitcoin as a way to fuel the industry’s growth. They included Jim Zemlin, executive director of the Linux Foundation; Brian Behlendorf, executive director of the Hyperledger Project, a blockchain supporter group that includes International Business Machines Corp., Airbus Group SE and JPMorgan Chase & Co.; and Ana Lopes, board member of the World Wide Web Foundation. Participants with blockchain industry ties include former deputy White House press secretary Jamie Smith, now chief global communications officer of BitFury Group Ltd., and Joseph Lubin, founder of startup Consensus Systems.
Was the founding director of the MIT Digital Currency Initiative -Left his 4 year post as White House Senior Advisor for Mobile and Data Innovation to go directly to the MIT DCI
Brian Forde has spent more than a decade at the nexus of technology, entrepreneurship, and public policy. He is currently the Director of Digital Currency at the MIT Media Lab where he leads efforts to mainstream digital currencies like Bitcoin through research, and incubation of high-impact applications of the emerging technology. Most recently he was the Senior Advisor for Mobile and Data Innovation at the White House where he spearheaded efforts to leverage emerging technologies to address the President’s most critical national priorities. Prior to his work at the White House, Brian founded one of the largest phone companies in Nicaragua after serving as a business and technology volunteer in the Peace Corps. In recognition of his work, Brian was named a Young Global Leader by the World Economic Forum and one of the ten most influential people in bitcoin and blockchain.https://www.linkedin.com/in/brianfordehttps://archive.is/WjEGU
Includes Accenture (See Avinash Vashistha), Allianz, Deloitte (Scaling Bitcoin platinum sponsor, Blockstream Partner), Citigroup, Bain & Company (parent of Bain Capital, DCG investor), Dalian Wanda Group (working on blockchain technology), Ernst & Young (see Paul Brody), HSBC (Li-Ka Shing, Blockstream investor, used to be Deputy Chairman of HSBC), IBM, KPMG International, Mastercard (DCG Investor), PwC (Blockstream partner, also sponsor of Scaling Bitcoin)
Future of Financial Services Report [PDF] The word “blockchain” is mentioned once in this document, on page 23 (http://i.imgur.com/1SxyneJ.png):We have identified three major challenge areas related to innovation in financial servicesthat will require multi-stakeholder collaboration to be addressed effectively. We are launching a project stream related to each area, with the goal of enabling tangible impact.... Decentralised systems, such as the blockchain protocol, threaten to disintermediate almost every process in financial services
Excerpt: BitFury - www.bitfury.com - The Bitfury Group develops and delivers software and hardware solutions for businesses, governments, organisations and individuals who want to securely move an asset across the Blockchain.
Newbs might not know this, but bitcoin recently came out of an intense internal drama. Between July 2015 and August 2017 bitcoin was attacked by external forces who were hoping to destroy the very properties that made bitcoin valuable in the first place. This culminated in the creation of segwit and the UASF (user activated soft fork) movement. The UASF was successful, segwit was added to bitcoin and with that the anti-decentralization side left bitcoin altogether and created their own altcoin called bcash. Bitcoin's price was $2500, soon after segwit was activated the price doubled to $5000 and continued rising until here we are today at $15000. During this drama, I took time away from writing open source code to help educate and argue on reddit, twitter and other social media. I came up with a reading list for quickly copypasting things. It may be interesting today for newbs or anyone who wants a history lesson on what exactly happened during those two years when bitcoin's very existence as a decentralized low-trust currency was questioned. Now the fight has essentially been won, I try not to comment on reddit that much anymore. There's nothing left to do except wait for Lightning and similar tech to become mature (or better yet, help code it and test it) In this thread you can learn about block sizes, latency, decentralization, segwit, ASICBOOST, lightning network and all the other issues that were debated endlessly for over two years. So when someone tries to get you to invest in bcash, remind them of the time they supported Bitcoin Unlimited.
Bitcoin Core 0.10.0 released | Wladimir | Feb 16 2015
Wladimir on Feb 16 2015: Bitcoin Core version 0.10.0 is now available from: https://bitcoin.org/bin/0.10.0/ This is a new major version release, bringing both new features and bug fixes. Please report bugs using the issue tracker at github: https://github.com/bitcoin/bitcoin/issues The whole distribution is also available as torrent: https://bitcoin.org/bin/0.10.0/bitcoin-0.10.0.torrent magnet:?xt=urn:btih:170c61fe09dafecfbb97cb4dccd32173383f4e68&dn;=0.10.0&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%2Fopen.demonii.com%3A1337&ws;=https%3A%2F%2Fbitcoin.org%2Fbin%2F 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). Downgrading warning Because release 0.10.0 makes use of headers-first synchronization and parallel block download (see further), the block files and databases are not backwards-compatible with older versions of Bitcoin Core or other software:
Blocks will be stored on disk out of order (in the order they are
received, really), which makes it incompatible with some tools or other programs. Reindexing using earlier versions will also not work anymore as a result of this.
The block index database will now hold headers for which no block is
stored on disk, which earlier versions won't support. If you want to be able to downgrade smoothly, make a backup of your entire data directory. Without this your node will need start syncing (or importing from bootstrap.dat) anew afterwards. It is possible that the data from a completely synchronised 0.10 node may be usable in older versions as-is, but this is not supported and may break as soon as the older version attempts to reindex. This does not affect wallet forward or backward compatibility. Notable changes Faster synchronization Bitcoin Core now uses 'headers-first synchronization'. This means that we first ask peers for block headers (a total of 27 megabytes, as of December 2014) and validate those. In a second stage, when the headers have been discovered, we download the blocks. However, as we already know about the whole chain in advance, the blocks can be downloaded in parallel from all available peers. In practice, this means a much faster and more robust synchronization. On recent hardware with a decent network link, it can be as little as 3 hours for an initial full synchronization. You may notice a slower progress in the very first few minutes, when headers are still being fetched and verified, but it should gain speed afterwards. A few RPCs were added/updated as a result of this:
getblockchaininfo now returns the number of validated headers in addition to
the number of validated blocks.
getpeerinfo lists both the number of blocks and headers we know we have in
common with each peer. While synchronizing, the heights of the blocks that we have requested from peers (but haven't received yet) are also listed as 'inflight'.
A new RPC getchaintips lists all known branches of the block chain,
including those we only have headers for. Transaction fee changes This release automatically estimates how high a transaction fee (or how high a priority) transactions require to be confirmed quickly. The default settings will create transactions that confirm quickly; see the new 'txconfirmtarget' setting to control the tradeoff between fees and confirmation times. Fees are added by default unless the 'sendfreetransactions' setting is enabled. Prior releases used hard-coded fees (and priorities), and would sometimes create transactions that took a very long time to confirm. Statistics used to estimate fees and priorities are saved in the data directory in the fee_estimates.dat file just before program shutdown, and are read in at startup. New command line options for transaction fee changes:
-txconfirmtarget=n : create transactions that have enough fees (or priority)
so they are likely to begin confirmation within n blocks (default: 1). This setting is over-ridden by the -paytxfee option.
-sendfreetransactions : Send transactions as zero-fee transactions if possible
(default: 0) New RPC commands for fee estimation:
estimatefee nblocks : Returns approximate fee-per-1,000-bytes needed for
a transaction to begin confirmation within nblocks. Returns -1 if not enough transactions have been observed to compute a good estimate.
estimatepriority nblocks : Returns approximate priority needed for
a zero-fee transaction to begin confirmation within nblocks. Returns -1 if not enough free transactions have been observed to compute a good estimate. RPC access control changes Subnet matching for the purpose of access control is now done by matching the binary network address, instead of with string wildcard matching. For the user this means that -rpcallowip takes a subnet specification, which can be
a single IP address (e.g. 18.104.22.168 or fe80::0012:3456:789a:bcde)
a network/CIDR (e.g. 22.214.171.124/24 or fe80::0000/64)
a network/netmask (e.g. 126.96.36.199/255.255.255.0 or fe80::0012:3456:789a:bcde/ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff)
An arbitrary number of -rpcallow arguments can be given. An incoming connection will be accepted if its origin address matches one of them. For example: | 0.9.x and before | 0.10.x | |--------------------------------------------|---------------------------------------| | -rpcallowip=192.168.1.1 | -rpcallowip=192.168.1.1 (unchanged) | | -rpcallowip=192.168.1.* | -rpcallowip=192.168.1.0/24 | | -rpcallowip=192.168.* | -rpcallowip=192.168.0.0/16 | | -rpcallowip=* (dangerous!) | -rpcallowip=::/0 (still dangerous!) | Using wildcards will result in the rule being rejected with the following error in debug.log:
Error: Invalid -rpcallowip subnet specification: *. Valid are a single IP (e.g. 188.8.131.52), a network/netmask (e.g. 184.108.40.206/255.255.255.0) or a network/CIDR (e.g. 220.127.116.11/24).
REST interface A new HTTP API is exposed when running with the -rest flag, which allows unauthenticated access to public node data. It is served on the same port as RPC, but does not need a password, and uses plain HTTP instead of JSON-RPC. Assuming a local RPC server running on port 8332, it is possible to request:
In every case, EXT can be bin (for raw binary data), hex (for hex-encoded binary) or json. For more details, see the doc/REST-interface.md document in the repository. RPC Server "Warm-Up" Mode The RPC server is started earlier now, before most of the expensive intialisations like loading the block index. It is available now almost immediately after starting the process. However, until all initialisations are done, it always returns an immediate error with code -28 to all calls. This new behaviour can be useful for clients to know that a server is already started and will be available soon (for instance, so that they do not have to start it themselves). Improved signing security For 0.10 the security of signing against unusual attacks has been improved by making the signatures constant time and deterministic. This change is a result of switching signing to use libsecp256k1 instead of OpenSSL. Libsecp256k1 is a cryptographic library optimized for the curve Bitcoin uses which was created by Bitcoin Core developer Pieter Wuille. There exist attacks against most ECC implementations where an attacker on shared virtual machine hardware could extract a private key if they could cause a target to sign using the same key hundreds of times. While using shared hosts and reusing keys are inadvisable for other reasons, it's a better practice to avoid the exposure. OpenSSL has code in their source repository for derandomization and reduction in timing leaks that we've eagerly wanted to use for a long time, but this functionality has still not made its way into a released version of OpenSSL. Libsecp256k1 achieves significantly stronger protection: As far as we're aware this is the only deployed implementation of constant time signing for the curve Bitcoin uses and we have reason to believe that libsecp256k1 is better tested and more thoroughly reviewed than the implementation in OpenSSL.  https://eprint.iacr.org/2014/161.pdf Watch-only wallet support The wallet can now track transactions to and from wallets for which you know all addresses (or scripts), even without the private keys. This can be used to track payments without needing the private keys online on a possibly vulnerable system. In addition, it can help for (manual) construction of multisig transactions where you are only one of the signers. One new RPC, importaddress, is added which functions similarly to importprivkey, but instead takes an address or script (in hexadecimal) as argument. After using it, outputs credited to this address or script are considered to be received, and transactions consuming these outputs will be considered to be sent. The following RPCs have optional support for watch-only: getbalance, listreceivedbyaddress, listreceivedbyaccount, listtransactions, listaccounts, listsinceblock, gettransaction. See the RPC documentation for those methods for more information. Compared to using getrawtransaction, this mechanism does not require -txindex, scales better, integrates better with the wallet, and is compatible with future block chain pruning functionality. It does mean that all relevant addresses need to added to the wallet before the payment, though. Consensus library Starting from 0.10.0, the Bitcoin Core distribution includes a consensus library. The purpose of this library is to make the verification functionality that is critical to Bitcoin's consensus available to other applications, e.g. to language bindings such as [python-bitcoinlib](https://pypi.python.org/pypi/python-bitcoinlib) or alternative node implementations. This library is called libbitcoinconsensus.so (or, .dll for Windows). Its interface is defined in the C header [bitcoinconsensus.h](https://github.com/bitcoin/bitcoin/blob/0.10/src/script/bitcoinconsensus.h). In its initial version the API includes two functions:
bitcoinconsensus_verify_script verifies a script. It returns whether the indicated input of the provided serialized transaction
correctly spends the passed scriptPubKey under additional constraints indicated by flags
bitcoinconsensus_version returns the API version, currently at an experimental 0
The functionality is planned to be extended to e.g. UTXO management in upcoming releases, but the interface for existing methods should remain stable. Standard script rules relaxed for P2SH addresses The IsStandard() rules have been almost completely removed for P2SH redemption scripts, allowing applications to make use of any valid script type, such as "n-of-m OR y", hash-locked oracle addresses, etc. While the Bitcoin protocol has always supported these types of script, actually using them on mainnet has been previously inconvenient as standard Bitcoin Core nodes wouldn't relay them to miners, nor would most miners include them in blocks they mined. bitcoin-tx It has been observed that many of the RPC functions offered by bitcoind are "pure functions", and operate independently of the bitcoind wallet. This included many of the RPC "raw transaction" API functions, such as createrawtransaction. bitcoin-tx is a newly introduced command line utility designed to enable easy manipulation of bitcoin transactions. A summary of its operation may be obtained via "bitcoin-tx --help" Transactions may be created or signed in a manner similar to the RPC raw tx API. Transactions may be updated, deleting inputs or outputs, or appending new inputs and outputs. Custom scripts may be easily composed using a simple text notation, borrowed from the bitcoin test suite. This tool may be used for experimenting with new transaction types, signing multi-party transactions, and many other uses. Long term, the goal is to deprecate and remove "pure function" RPC API calls, as those do not require a server round-trip to execute. Other utilities "bitcoin-key" and "bitcoin-script" have been proposed, making key and script operations easily accessible via command line. Mining and relay policy enhancements Bitcoin Core's block templates are now for version 3 blocks only, and any mining software relying on its getblocktemplate must be updated in parallel to use libblkmaker either version 0.4.2 or any version from 0.5.1 onward. If you are solo mining, this will affect you the moment you upgrade Bitcoin Core, which must be done prior to BIP66 achieving its 951/1001 status. If you are mining with the stratum mining protocol: this does not affect you. If you are mining with the getblocktemplate protocol to a pool: this will affect you at the pool operator's discretion, which must be no later than BIP66 achieving its 951/1001 status. The prioritisetransaction RPC method has been added to enable miners to manipulate the priority of transactions on an individual basis. Bitcoin Core now supports BIP 22 long polling, so mining software can be notified immediately of new templates rather than having to poll periodically. Support for BIP 23 block proposals is now available in Bitcoin Core's getblocktemplate method. This enables miners to check the basic validity of their next block before expending work on it, reducing risks of accidental hardforks or mining invalid blocks. Two new options to control mining policy:
-datacarrier=0/1 : Relay and mine "data carrier" (OP_RETURN) transactions
if this is 1.
-datacarriersize=n : Maximum size, in bytes, we consider acceptable for
"data carrier" outputs. The relay policy has changed to more properly implement the desired behavior of not relaying free (or very low fee) transactions unless they have a priority above the AllowFreeThreshold(), in which case they are relayed subject to the rate limiter. BIP 66: strict DER encoding for signatures Bitcoin Core 0.10 implements BIP 66, which introduces block version 3, and a new consensus rule, which prohibits non-DER signatures. Such transactions have been non-standard since Bitcoin v0.8.0 (released in February 2013), but were technically still permitted inside blocks. This change breaks the dependency on OpenSSL's signature parsing, and is required if implementations would want to remove all of OpenSSL from the consensus code. The same miner-voting mechanism as in BIP 34 is used: when 751 out of a sequence of 1001 blocks have version number 3 or higher, the new consensus rule becomes active for those blocks. When 951 out of a sequence of 1001 blocks have version number 3 or higher, it becomes mandatory for all blocks. Backward compatibility with current mining software is NOT provided, thus miners should read the first paragraph of "Mining and relay policy enhancements" above. 0.10.0 Change log Detailed release notes follow. This overview includes changes that affect external behavior, not code moves, refactors or string updates. RPC:
f923c07 Support IPv6 lookup in bitcoin-cli even when IPv6 only bound on localhost
b641c9c Fix addnode "onetry": Connect with OpenNetworkConnection
29 May 2013. Bitcoin-Qt version 0 ... Entering the getblocktemplate or getwork RPC commands into the Bitcoin-Qt debug console will cause Bitcoin-Qt to crash. Run Bitcoin-Qt with the -server command-line option to workaround. Thanks to everybody who contributed to the 0.8.2 release! APerson241; Andrew Poelstra; Calvin Owens; Chuck LeDuc Díaz; Colin Dean; David Griffith; David Serrano; Eric ... Newbs might not know this, but bitcoin recently came out of an intense internal drama. Between July 2015 and August 201 … Press J to jump to the feed. Press question mark to learn the rest of the keyboard shortcuts. Log in sign up. User account menu. 764. Long live decentralized bitcoin(!) A reading list. Close. 764. Posted by 2 years ago. Archived. Long live decentralized bitcoin(!) A ... Bitcoin Core 0.10 implements BIP 66, which introduces block version 3, and a new consensus rule, which prohibits non-DER signatures. Such transactions have been non-standard since Bitcoin v0.8.0 (released in February 2013), but were technically still permitted inside blocks. List of academic papers that relate to Bitcoin scalability and interoperability. Free minds and free markets. Reason.com is the leading libertarian magazine and video website covering news, politics, culture, and more with reporting and analysis.
BBC Click Interview Peter Todd with Dark Wallet Team in the London Bitcoin Squat FULL Unedited Audio
BitCoin developer Amir Taaki spoke about his work on cryptocurrency and Dark Wallet – an open source digital wallet for untraceable, anonymous online transactions. Web We Want Festival ... Dan Morehead Pantera Capital Live : Bitcoin Halving, BTC Updates, Pantera Capital invests Biu do Piseiro 78,737 watching Live now Politics and the Bitcoin Protocol (Peter Todd, May 2014 ... Binary District is a collaborative community, centred around new technologies. We are building a strong community of researchers and developers to foster lea... An Interview with Peter Todd about Scaling Bitcoin (Mar 21, 2017) - Duration: 1:04:41. ... 2013 · Documentary; 1:51:12. But how does bitcoin actually work? - Duration: 26:21. 3Blue1Brown ... Peter Todd, Bitcoin expert, part 1: https: ... Is Bitcoin The New Euro? Disrupt Europe 2013 - Duration: 23:21. TechCrunch Recommended for you. 23:21. Bitcoinin arvo jo yli 16 000 euroa - tähän ...