Permissioned (private) blockchain
The Big Four
- LaZooz — decentralized real-time ride sharing
- Swarm and Koinify — decentralized crowdfunding
- Synereo — synchronous and asynchronous communication
- Gem — Blockchain Platform for healthcare and supply chain
- Steemit combines a blogging site/social networking website and a cryptocurrency
- DECENT Network content distribution platform
- Hyperledger — cross-industry collaborative effort from the Linux Foundation to support blockchain-based distributed ledgers.
- Counterparty — open source financial platform for creating peer-to-peer financial applications on the bitcoin blockchain
- Bitnation is the world's first operational Decentralized Borderless Voluntary Nation, a Blockchain Powered Jurisdiction.
- JPMorgan Chase's Quorum permissionable private blockchain with private store for smart contracts
- Ethereum is a Blockchain, with a Turing complete scripting language that enables the processing of smart-contracts on the Blockchain.
- æternity is being developed as the only Blockchain that can by its core design sustain throughput of mainstream world use cases thanks to state channels, while providing real-world interfaces within its Blockchain through Decentralised Oracles.
- AuxLedger build by Auxesis Group is an Enterprise grade Blockchain infrastructure with built-in capabilities disrupting businesses and impacting millions of population across. In terms of size its AuxLedger was noted as the largest blockchain network with 53 Million ID's.
- Zero Knowledge Blockchain: a platform by QED-it, combining the advantages of coordinating the operative parties (Blockchain technology) to the necessities of non data disclosure (ZKP) for legal or business motives (Zero Knowledge proof cryptology).
- Deloitte and ConsenSys announced plans in 2016 to create a digital bank called Project ConsenSys.
- R3 connects 42 banks to distributed ledgers built by Ethereum, Chain.com, Intel, IBM and Monax.
- Microsoft Visual Studio is making the Ethereum Solidity language available to application developers.
- SafeShare Insurance offers blockchain-based insurance for the sharing economy, underwritten by Lloyd's of London.
- A Swiss industry consortium, including Swisscom, the Zurich Cantonal Bank and the Swiss stock exchange, is prototyping over-the-counter asset trading on a blockchain-based Ethereum technology.
- IBM offers a cloud Blockchain service based on the open source Hyperledger Fabric project
- Founded by a world class team, QED-it has developed the Zero Knowledge Blockchain: a platform combining the advantages of coordinating the operative parties (Blockchain technology) to the necessities of non data disclosure (ZKP) for legal or business motives (Zero Knowledge proof cryptology). 
- e-Dinar, Tunisia's national currency, was the first state currency using blockchain technology.
- eCFA is Senegal's blockchain-based national digital currency.
- Level One Project from the Bill & Melinda Gates Foundation aims to use blockchain technology to help the two billion people worldwide who lack bank accounts.
- Building Blocks project from The U.N.'s World Food Programme (WFP) aims to make WFP’s growing cash-based transfer operations faster, cheaper, and more secure. Building Blocks commenced field pilots in Pakistan in January 2017 that will continue throughout Spring.
- The director of the Office of IT Schedule Contract Operations at the US General Services Administration, Mr. Jose Arrieta, disclosed at the Sept. 20 ACT-IAC (American Council for Technology and Industry Advisory Council) Forum that its organization is using blockchain distributed ledger technology to speed up the FASt Lane process for IT Schedule 70 contracts through automation. Two companies, United Solutions (prime contractor) and Sapient Consulting (Subcontractor) are developing for FASt Lane a prototype to automate and shorten the time required to perform the contract review process. .
- Backfeed project develops a distributed governance system for blockchain-based applications allowing for the collaborative creation and distribution of value in spontaneously emerging networks of peers.
- The Alexandria project is a blockchain-based Decentralized Library.
- Tezos is a blockchain project that governs itself by voting of its token holders. Bitcoin blockchain performs as a cryptocurrency and payment system. Ethereum blockchain added smart contract system on top of a blockchain. Tezos blockchain will add an autonomy system - a decentralized code Development function on top of both Bitcoin and Ethereum blockchains.
- Changelog a record of all notable changes made to a project
- Checklist an informational aid used to reduce failure
- Economics of digitization
- Ledger (journal) academic journal on blockchains
- List of cryptocurrencies currency based blockchains
- List of emerging technologies
- Economist Staff (31 October 2015). "Blockchains: The great chain of being sure about things". The Economist. Retrieved 18 June 2016.
The technology behind bitcoin lets people who do not know or trust each other build a dependable ledger. This has implications far beyond the crypto currency.
- Morris, David Z. (2016-05-15). "Leaderless, Blockchain-Based Venture Capital Fund Raises $100 Million, And Counting". Fortune. Retrieved 2016-05-23.
- Popper, Nathan (2016-05-21). "A Venture Fund With Plenty of Virtual Capital, but No Capitalist". New York Times. Retrieved 2016-05-23.
- Brito, Jerry; Castillo, Andrea (2013). Bitcoin: A Primer for Policymakers (PDF) (Report). Fairfax, VA: Mercatus Center, George Mason University. Retrieved 22 October 2013.
- Trottier, Leo (2016-06-18). "original-bitcoin" (self-published code collection). github. Retrieved 2016-06-18.
This is a historical repository of Satoshi Nakamoto's original bit coin sourcecode
- Narayanan, Arvind; Bonneau, Joseph; Felten, Edward; Miller, Andrew; Goldfeder, Steven (2016). Bitcoin and cryptocurrency technologies: a comprehensive introduction. Princeton: Princeton University Press. ISBN 978-0-691-17169-2.
- "Blockchain". Investopedia. Retrieved 19 March2016.
Based on the Bitcoin protocol, the blockchain database is shared by all nodes participating in a system.
- Iansiti, Marco; Lakhani, Karim R. (January 2017). "The Truth About Blockchain". Harvard Business Review. Harvard University. Retrieved 2017-01-17.
The technology at the heart of bitcoin and other virtual currencies, blockchain is an open, distributed ledger that can record transactions between two parties efficiently and in a verifiable and permanent way.
- Raval, Siraj (2016). "What Is a Decentralized Application?". Decentralized Applications: Harnessing Bitcoin's Blockchain Technology. O'Reilly Media, Inc. pp. 1–2. ISBN 978-1-4919-2452-5. OCLC 968277125. Retrieved 6 November 2016 – via Google Books.
- Yuan, Ben; Lin, Wendy; McDonnell, Colin. "Blockchains and electronic health records" (PDF). mcdonnell.mit.edu.
- Ekblaw, Ariel; Azaria, Asaf (19 September 2016). "MedRec: Medical Data Management on the Blockchain". PubPub.
- Yurcan, Bryan (8 April 2016). "How Blockchain Fits into the Future of Digital Identity". American Banker. SourceMedia.
- Prisco, Giulio (3 June 2016). "Microsoft Building Open Blockchain-Based Identity System With Blockstack, ConsenSys". Bitcoin Magazine. BTC Media LLC.
- Prisco, Giulio (18 August 2016). "Department of Homeland Security Awards Blockchain Tech Development Grants for Identity Management and Privacy Protection". Bitcoin Magazine. BTC Media LLC.
- Browne, Ryan (22 August 2017). "IBM partners with Nestle, Unilever and other food giants to trace food contamination with blockchain". CNBC.
- Haber, Stuart; Stornetta, W. Scott (January 1991). "How to time-stamp a digital document". Journal of Cryptology. 3(2): 99–111. Retrieved 4 July 2017.
- Bayer, Dave; Haber, Stuart; Stornetta, W. Scott (March 1992). "Improving the Efficiency and Reliability of Digital Time-Stamping". Sequences. 2: 329–334. Retrieved 4 July2017.
- Nakamoto, Satoshi (2008-10-31). "Bitcoin P2P e-cash paper". The Cryptography Mailing List (Mailing list). Gmane. Archived from the original on 2016-12-13. Retrieved 2016-12-09.
- Nian, Lam Pak; Chuen, David LEE Kuo (2015). "A Light Touch of Regulation for Virtual Currencies". In Chuen, David LEE Kuo. Handbook of Digital Currency: Bitcoin, Innovation, Financial Instruments, and Big Data. Academic Press. p. 319. ISBN 978-0-12-802351-8.
- "Blockchain Size". Blockchain. Blockchain Luxembourg S.A. Archived from the original on 2017-03-03.
- Bheemaiah, Kariappa (January 2015). "Block Chain 2.0: The Renaissance of Money". Wired. Retrieved 13 November 2016.
- Tapscott, Don; Tapscott, Alex (May 2016). The Blockchain Revolution: How the Technology Behind Bitcoin is Changing Money, Business, and the World. ISBN 978-0-670-06997-2.
- Project Bletchley Whitepaper, Microsoft, 2016-09-19, accessed 2016-12-24.
- Yakovlev, Alexander (2016-04-15). "НРД проголосовал за блокчейн" [NSD blockchain vote]. Bankir.ru (Interview) (in Russian). Interview with Kovlyagina, Tatiana. Retrieved 18 June 2016.
"Национальный расчетный депозитарий запустил пилотный проект на основе технологии распределенного реестра. Создание прототипа системы электронного голосования владельцев облигаций на блокчейне анонсировал на Биржевом форуме председатель правления НРД Эдди Астанин [The National Settlement Depository started the pilot project based on the technology of the distributed register. Creation of the prototype system of electronic voting for owners of bonds based on blockchain was announced at the Exchange forum by the chairman of the board of NSD, Eddie Astanin.]
- Aitken, Roger (2016-01-23). "MUSE: Leveraging Blockchain Technology To Revolutionize Music Industry". Forbes. Retrieved 18 June 2016.
- Williams, Ann (12 July 2016). "IBM to open first blockchain innovation centre in Singapore, to create applications and grow new markets in finance and trade". The Straits Times. Singapore Press Holdings Ltd. Co. Retrieved 13 November 2016.
- Higgins, Stan (9 November 2016). "Former Estonian President to Lead World Economic Forum Blockchain Group". CoinDesk. Retrieved 13 November 2016.
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- Armstrong, Stephen (2016-11-07). "Move over Bitcoin, the blockchain is only just getting started". Wired. Retrieved 2016-11-09.
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- Tapscott, Don; Tapscott, Alex (8 May 2016). "Here's Why Blockchains Will Change the World". Fortune. Retrieved 16 November 2016.
- Tucci, Michele (29 November 2015). "Can blockchain help the cards and payments industry?". Tech in Asia. Retrieved 16 November 2016.
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- Bhaskar, Nirupama Devi; Chuen, David LEE Kuo (2015). "3 – Bitcoin Mining Technology". In Cheun, David Lee Kuo. . Academic Press. pp. 47–51. ISBN 978-0-12-802117-0. Retrieved 2 December2016 – via ScienceDirect.
- Redman, Jamie (25 October 2016). "Disney Reveals Dragonchain, an Interoperable Ledger". Bitcoin.com. Retrieved 4 December 2016.
- Antonopoulos, Andreas (20 February 2014). "Bitcoin security model: trust by computation". Radar. O'Reilly. Retrieved 19 November 2016.
- Antonopoulos, Andreas M. (2014). Mastering Bitcoin. Unlocking Digital Cryptocurrencies. Sebastopol, CA: O'Reilly Media. ISBN 1449374034. Retrieved 3 November2015.
- Nakamoto, Satoshi (October 2008). "Bitcoin: A Peer-to-Peer Electronic Cash System" (PDF). bitcoin.org. Retrieved 28 April 2014.
- "Permissioned Blockchains". Explainer. Monax. Retrieved 20 November 2016.
- "How Blockchain Technology Can Change The Way Modern Businesses Work". Eyerys. Retrieved 19 October2017.
- Kopstein, Joshua (2013-12-12). "The Mission to Decentralize the Internet". The New Yorker. Retrieved 30 December 2014.
The network's 'nodes'—users running the bitcoin software on their computers—collectively check the integrity of other nodes to ensure that no one spends the same coins twice. All transactions are published on a shared public ledger, called the 'block chain.'
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