How blockchain technology works - OBN

DEVCON2 report: Day Three - Final day

previous days
Question: the 3 days of devcon are over. Are people interested in reports on the next 3 days of international Blockchain week (demo day + 2 days of global Blockchain summit) http://www.blockchainweek2016.org
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Event update
The buzz during the day was around the "stick puzzle" that Bok Khoo was giving out to people. It is just a stick, with a loop of string. He gets you to turn away, he uses "the trick" to put it onto your bag and then you try to get it off.
The WeChat channel was just filled with everyone asking where they can get it, and the screaming that they can't figure it out. Only about 5 people reported they were able to solve it (I haven't yet)
http://imgur.com/mYfJQP4 http://imgur.com/4Euka1a
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Sessions
I'm biased, but I thought the announcement from Microsoft with the update of cryptlets was a big deal. The morning sessions covered a few different oracle systems, the afternoon had lots of IPFS sessions.
Microsoft - A Lap around Cryptlets
https://azure.microsoft.com/en-us/blog/cryptletsdd/ https://azure.microsoft.com/en-us/documentation/templates/ethereum-consortium-blockchain-network/ https://azure.microsoft.com/en-us/blog/authomarleyg
Microsoft was a sponsor of Devcon1 & 2 Ethereum is a 1st class citizen Support for community & partners - Bizspark, Meetups, Workshops
Announcing: Bletchley v1 Distributed Ledger stack V1 is a private Ethrerum consortium, that you can spin up for your own enterprise / group
http://imgur.com/olwwd36
Cryptlets are being developed to help with security, identity, etc. How do you get trusted external data feeds injected into the Blockchain? Doing things on a specific interval (every 15 mins) When price of something hits a threshold (oil goes above $40/barrel) Secure IP protected algorithms, but still share with blockchain network. Use libraries for common platforms (.Net, Java, etc)
Cryptlets vs Oracle Cryptlets will have a marketplace on Azure that will allow you to purchase and utilise
Use case: Trigger on an event Wake up on 4pm, if market was open that day, then give me the price of gold for that day.Get signature of attested server, attested sender.
Use case: Control Using smart contract like a traditional DB. Declare data you are keeping track of, and the functions/"stored proc" to update that data. Cryptlet runs off chain, and can be scaled up.
http://imgur.com/ysgL8S2
Utility cryptlet. Use an attribute in solidity contract with cryptlet details Developer references at design time the cryptlet they want the contract to call Contract cryptlet, deploy the cryptlet at same time as contract.
Why would you want Azure to do this? SGX allows you to create "secure enclaves", can have complete isolation on the hardware chip where it is not modifable. Provides a secure enclave at the CPU level. Can give full attestation right down to the silicon. Will be provided as a enclave container on Azure. Will be released for .NET core CLR first, then other languages. Can create cryptlet libraries that you can scale and put into the Azure marketplace. An ecosystem for developers & ISVs to consume and publish.
Bletchley v1 released today will let you spin up a private consortium. Before today, it took a long time to try and deploy a private consortium (can take weeks to read doco, Now takes 5 minutes to deploy! Creates a private consortium, puts each member in its own separate subnet
http://imgur.com/w4yUsqE
Mist Vision and Demo I was too busy sharing the release posts of Microsoft project bletchey v1, missed this talk. It did look interesting, I will watch this one later. Idea: Reward for bandwidth. Providing connection could replace mining as entrance point for desktop computers. Allow you to have a trickle so you can trigger smart contracts. Standardised backends, so that you can swap out the underlying node between geth, blockapps, etc.
Web3.js
https://github.com/ethereum/web3.js Etehereum JS API Smart conracts are EVM opcodes, Helps translates calls to JSON RPC calls. Helps do the ABI encoding when sending data from JS to EVM It kept on growing, many different utility functions being thrown in. Is time to clean it up and be refactored.
They are now building a NEW web3.js The communication will be socket based, will enable subscriptions. Everything will be based on promises to subscribe to events, like log events. Bunch of other newer cleaner methods and ways to do things like deploying contracts.
Smart contract security
Was a very good postmorteum of The DAO and things that could be done to mitigate it in the future.
An issue with The DAO was trying to do a massive jump from centralisation all the way to full decentralisation. Meant no one could step up and make a decision on how to save it. We need to make smaller steps towards full decentralisation as we learn as a community how to do this. Same security patterns as yesterday's talks: check invarients, beware 1024 call stack depth, reentry exploit (update state BEFORE executing calls), timestamps are manipulatable. Updateable contracts. Who can update it? Community multisig? We need better rools: formal verification, compiler warnings, improved IDEs, trusted libraries, excape hatches
Conclusion: It is still very early days in this space, be careful.
A Provably Honest Oracle Model: Auditable Offchain Data Gathering & Computations
Oracalize is the most widely used oracle (until everyone starts using Microsoft Azure cryptlets ;-) ) Contract calls Oracalize contract with the data they want, off chain they see this get the data, Oracalise then trigger their contract externally, which does a callback to your contract with the data. Can use external notary servers. Can get proof from multiple external services to get a higher level of confidence about data (e.g. stock price from a few feeds). Off-chain (auditable_ computation) AWS sandbox 2.0. Put the execution package onto IPFS, AWS gets it and executes it, signs it.
iEx.ec: Fully Distributed Cloud Thanks to the Ethereum Blockchain
http://iex.ec/ Provides blockchain based execution environments Global market for computing resources. Idea is to do what we did before with "grid computing" use the idle capacity of computers. But this time do a trickle of micropayments. Allows people to harness this global power to execute their tasks in a global "distributed cloud".
The Final frontier: The company smart conract
http://otonomos.com/ Helping companies to incorporate on the blockchain.
Smart oracles
https://github.com/smartoracles Connecting to external resources is difficult. Hard to try and use external currencies (like a bank account / fiat money) to make transactions. Could hook in paypal, HSBC, wells fargo, etc. Can provide your own payment services as an API to a smart oracle for smart contracts to consume. Do off chain data storage by calling smart oracle API Roadmap: more data sources & more payment methods
IPFS & Ethereum: Updates
https://Ipfs.io IPFS is AMAZING, seriously go watch the full 1 hour talks Juan has given in previous years.
Current web has current issues. Centralisation, etc. IPFS is a new hypermedia transfer protocol Content can be retrieved not from specific servers, but instead via it's hash so that it can come from anywhere in the network (maybe from the person next to you who has cached it). It is highly modular, all of the transfer protocals, routing, naming, etc. are all swapable Is available as GO-IPFS & now JS-IPFS Means now you can run IPFS in the browser IPFS was great for static content, but not so great for dynamic content. Low latency pub/sub protocol will help with dynamic data. Created a distributed peer to peer chat app using this new dynamic content protocol. IPLD a common link-tree hash format Will be able to use IPFS to retrieve ethereum blockchain blocks DIRECTLY Can use IPFS as a package manager to retrieve them in a distributed manner.
Many projects are using Ethereum & IPFS Uport, Digix, Infura, Ujo, Eris, Blockfreight. Filecoin was created as a way to try and incentivize nodes to keep files longer time. People rent out hdd space to earn filecoin. Exchange bitcoin/filecoin. Use filecoin to store files in network. Filecoin is going to be built on top of the public Ethereum blockchain, as a virtual blockchain / token.
IPFS Libp2p & Ethereum networking
Network connectivity between any 2 nodes can be difficult. Censorship, bandwidth, network issues, etc. Having to deal with different networking topologies and access. Libp2p & Devp2p is different. Devp2p is for Ethereum. LIbp2p is modular, can swap out components to change network access, encryption methods, etc. Can build up a MEGA mesh network, by utilising traditional wired internet, radio, bluetooth between some nodes. Web browser using web socket, to a node, which routes across network, to zigbee to a IoT device. Libp2p & Devp2p could merge and augment each other. Could create the libp2p components to replace the devp2p bits Any 2 nodes that speak the same protocol can communicate and be a part of the network chain. Experiment. They took the browser based version of EVM. Then used Libp2p to talk to the Ethereum network. Had a complete ethereum node running in a browser.
Uport
https://uport.me/ Universal identity platform Current challenges: key management. Ux for average person. Dapps via mobile. Identity and data ownership. How do you keep a consistent identity, even if you lose a key. Have some multisig contracts that you can use to keep track. Social recovery, use your friends to attest it is really you. Keep private key on mobile, do transactions on the desktop, scan a QR code to sign the transaction on your phone and send it off.
A Deep Dive into the Colony Foundation Protocol
It is an open source governance protocol built on Ethereum Problem with voting is how to prevent Sybil attacks. Votes are weighted by a reputation score. Reputation is non-transferable that can only be earned. Total weighted voting helps mitigate this.
Chain orchestration tooling & smart contract package management
Eris is tooling for developers. Package manager to build your own blockchain. Can compose a chain, e.g. geth + tendermint consensus. Init, install, do. Can easily install on Mac/bew, linux/apt-get, Windows/choco
The Golem Project: Ethereum-based market for computing power
http://www.golemproject.net/ Anyone can make an offer to sell computing power. e.g. Distributed rendering Want to create a standard framework that anyone can use to submit and process jobs.
Status: Integrating Ethereum Into Our Daily Lives
https://status.im Want to get ethereum everywhere. "Mist for Mobile" Everyone is using their mobile phones for everything, but mostly using instant messaging. What would Ethereum in a IM window look? Created a IM mobile app that has a local geth node. tart up, it asks you to create a password, it generates a pub/private pair. Then can send messages via whisper, and the messages are signed with your public key. Can load Dapps up in the local webview and interact with them. Allows you to create "chat Dapps", that you interact with via text. Like chatbots
Maker Ecosystem Overview
www.Makerdao.com Dai: seeking stability on blockchain. Stablecoin engine: smart contract that holds collateral reserves and controls the Dai lifecycle. MKR: open source community managing risk of the system In the last year, investing in a solid technical core. More slow and audit things. Moving into the next phase of stablecoin development. Their latest project is the "Simplecoin project" Meeting Thereum community's need for stability. An independent platform for creating centrally administered simple stablecoins. Issues create their own rule sets: Collateral types, participant whitelists, security parameters. Example: Shrutebucks. The only people who own it are Dwight, Jim & Pam. They backed it with 1/3 ETH 1/3 DGX 1/3 DUSD.
Orbit. A distributed peer to peer app on IPFS
https://github.com/haadcode Created a full distributed chat room, itself distributed through IPFS. It is integrated with uPort for identification Using uPort allows you to verify that you are talking to the correct person in the chat channel. All their messages are signed with their public keys He also created a full distribited twitter clone, using uport for the identity as well. Orbit-db key value store DB that stores its data on IPFS. Eventually consistent Appends data to the DB, an event is sent to those subscribed on pub/sub so they can see the latest root hash. Based on CRDT Ethereum + Pubsub + CRDTs + IPFS = super power primatives to build dynamic distributed apps
Development considerations with distributed apps. Need to ensure that apps work offline. No centralised servers. No data silos. Provide integration path.
Future work: could you use uPort for ACL like permissions? Mobile use cases, how to make it work nicely on mobiles
Building scalable React Dapp architecture
https://github.com/SilentCicero/react-dapp-boilerplate React + Ethereum He has a configured boilerplate template. Has contract scaffolding. Enforced contract Linting/testing. Wallet generation/identity. Preconfigured web3 instance. UI: Mature react arhitecture "react boilerplate". Prices listed in USD with ETH/btc via kraken api. A basic multi-contract example Dapp. Offline first, dapp runs without internet. Uses Redux. State models in UI & blockchains work well. PostCSS, CSS Modules, sanitize.cs. Redux, immutableJS, reslect, redux-saga, i18n, redux-router. Web3, ethdeploy, dapple, solium, eth-lightwallet, chaithereum, ethereumjs0-testrpc Enforced contract testing in 2 languages.
Ethereum for Enterprise (BlockApps Strato)
Trying to make sure that Ethereum stays relevent to enterprise development. Why do you need a blockchain WITHIN an org, shouldn't they trust each other? Well different departments may not, they may reconcile differently, and can help automate/orchestrate between them. Blockchain is the "killer app" for cloud financial services. Legacy infrastructure, batch prossing, etc are all restricting fintech from progressing. Blockchain can happen in real time, can replace legacy. Ethereum is very flexible and programmable, works well. There are others based on Bitcoin (like Hyperledger). Ethereum + Blockapps = Extreme productivity + Proven Technology. Blockapps is extending Ethereum for Enterprise. Runs very well on Azure Enterprises don't want all their data exposed on public chain. Blockapps helps solve data privacy and scaling with multichain fabrics.
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Bonehead's Ethereum News to Come (Updated)

NEWs To Come - last updated - April 5th, 2016
Ethereum’s ecosystem is growing so quickly, very exciting news has a habit of coming out of nowhere. That said, there are more than a few things to have on our radar. Thanks to help from this community, here’s a current list. As always, what am I missing?
Ethereum Blockchain Development
Other news we know will happen
Coin relays and interoperability
One very powerful aspect of Ethereum’s blockchain is it allows both formal relays between blockchains as well as general interoperability between chains. Relays allow Ethereum to empower other blockchains, basically letting these more classic chains (like Bitcoin and Dogecoin) use Ethereum as a service for smart contracts. This “bonded sidechain” is more powerful/flexible path to using smart contracts than building non-currency agnostic chains. Similarly, interoperability is a classic concept in software development with over 30 years of history. Ethereum’s Virtual Machine (EVM) greatly facilitates multi-chain interoperability – which could allow private chains to communicate with Ethereum’s public chain. Basically, Ethereum facilitates “chaining all the things”. In other words, even future private chains could interoperate with the Ethereum public blockchain to have a gateway between their secured private chain and the more global public chain. Private chain development is a GOOD thing under this model, even if that private chain is not an Ethereum fork.
Current examples
Public Dapps and/or ventures to keep an eye on
Ethereum ecosystem is growing in unbelievable way with well over a 100 DApps. Below are some DApps and ventures that have been commonly discussed and seem to be generating news sooner than later.
Many of Ethereum's 100+ DApps will fail, but it only takes one to succeed to bring Ethereum to the mainstream. That said, sadly, there will also be scams. We should never forget Bitcoin's NeoBee or any of the MANY failed exchanges. As a community, we'll want to keep a close eye out in more ways than one. Be enthusiastic but critical - with transparency being absolutely key to trust.
Developer tools to keep an eye on
Ether ATMs
Embedded Devices
Potential surprises that are not really surprises
Parting statement
Ethereum has essentially a monopoly on smart contracts, and from the list above, it should be clear that it has built a remarkable network effect around this ecosystem. It is a disruptive technology, that fosters synergies, and when put in a greater perspective, it’s market cap remains quite tiny, especially when you think of the relative size of the growing community.
Please let me know if there is something you'd like to see.
Concerns
You can support my ETH sleuthing addiction:
0x082b594a0fbb4faa007e72f3a31d56764ac4de66
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S'PORE ETH TODAY: Vitalik Buterin Keynote Special

starting 1 hour from time of posting:
http://www.meetup.com/Ethereum-Singapore/events/231181508/
Friday, June 3, 2016 7:00 PM to 9:00 PM
We are very excited to bring the blockbuster event of the year - a keynote special from the Founder of Ethereum himself, Vitalik Buterin. We will be finalizing some content for this event and it may center around:
  1. Casper algorithm and roadmap for Ethereum
  2. Sharding & Scalability Solution
  3. Security Aspects with Geth and open RPC ports
  4. Public vs Permissioned blockchains
  5. General overview - how would the Bitcoin and Ethereum ecosystems co-exist together
  6. Views on the rise of Decentralized Autonomous Organizations
This event has been jointly put together by DigixGlobal (www.dgx.io) and Otonomos (otonomos.com) with the gracious support of the venue by Life.SREDA (lifesreda.com) for Ethereum Singapore Meetup.
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Lest We forget and why we are confident: here are a few Ethereum Fundamentals. A reminder for newcomers and old hands.

Worth repeating every now and then. Welcome again to any one new in the past few months.
More on Ethereum DApps in 2017/2018. "Looking forward to Balanc3 Triple Entry Accounting Benefactory BoardRoom Blockchain Governance Colony DGX Gold EtherLoan Etherisc FileCoin Gnosis Golem OTONOMOS SafeMarket Singular DTV StabL Status Ujo Music Virtue Poker WeiFund and others." https://media.consensys.net/2017-blockchain-predictions-dcc38066a937#.7tdjj0trf
And finally this: "I am a confident that “The Flippening” will occur and if you are new to the concept, I am glad to introduce you to the idea. Currently six of the top 20 digital assets by market cap exist on the Ethereum network. There will be a time in the near future where Bitcoin is no longer the dominant “coin” or blockchain, this will likely happen sooner than most expect… and Ethereum will be the one to take its place. This idea does not come from hope, nor love; it comes from logic." https://medium.com/@theDAOKING/the-flippening-how-i-learned-to-stop-loving-bitcoin-663e5db40707#.r79vkq7f1
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Regarding Ethereum fundamentals: for anyone new who is interested

Posted again for anyone new here: welcome all.
From a Maker post some time back; " The core value proposition of Ethereum can be summarized with a single word: Synergy."
The result of this inherent synergy is an unbeatable network effect in accordance with Metcalfe's law. Every time a VC or a banker asks me which blockchains are interesting to look at in the industry, I tell them the same thing: Ethereum has already won. It has reached critical mass and become what can best be described as an unstoppable, ever growing snowball.
More on Ethereum DApps in 2017/2018.
"Looking forward to Balanc3 Triple Entry Accounting Benefactory BoardRoom Blockchain Governance Colony DGX Gold EtherLoan Etherisc FileCoin Gnosis Golem OTONOMOS SafeMarket Singular DTV StabL Status Ujo Music Virtue Poker WeiFund and others."
https://media.consensys.net/2017-blockchain-predictions-dcc38066a937#.7tdjj0trf
And this quote from Brian Armstrong:
" Bitcoin may surprise me and scale (I hope I’m wrong). As we wait to see, an opportunity has emerged for other protocols to fill the payment network gap. Ethereum seems the most likely candidate for this at the moment. It continues to attract a number of good engineers to work on the protocol and build applications (an important leading indicator) and if proof-of-stake is successful this year, it will be a major computer science breakthrough providing a sustainable advantage. ICOs (people raising money on the blockchain) show no signs of slowing down, and Ethereum makes it very easy to issue new tokens for this purpose. I think new tokens built on top of Ethereum will find all sorts of use cases, from virtual worlds to prediction markets. "
And finally this:
"I am a confident that “The Flippening” will occur and if you are new to the concept, I am glad to introduce you to the idea. Currently six of the top 20 digital assets by market cap exist on the Ethereum network. There will be a time in the near future where Bitcoin is no longer the dominant “coin” or blockchain, this will likely happen sooner than most expect… and Ethereum will be the one to take its place. This idea does not come from hope, nor love; it comes from logic."
https://medium.com/@theDAOKING/the-flippening-how-i-learned-to-stop-loving-bitcoin-663e5db40707#.r79vkq7f1
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Rising Stars In Corporate Venturing 2017

http://www.globalcorporateventuring.com/
Global Corporate Venturing is the media publication and data provider for the corporate venture capital industry. It has a unique database, GCV Analytics, to which numerous Fortune 1000 companies subscribe, and it runs multiple global events, with flagship conferences in Silicon Valley and London
 
Not too bad, out of 100 + :-)
http://www.globalcorporateventuring.com/data/files/RisingStars2017.pdf
15 Vitalik Buterin, Wanxiang
One of the most regular expectations from corporate venturers is there will be more cross-sector collaboration and innovative ideas funded. The poster child for how this can happen involves China-based auto parts maker Wanxiang, which has set up a $50m corporate venturing fund, Fenbushi Capital, which means distributed in Mandarin Chinese, in collaboration with Vitalik Buterin, the Russia-born, Canada-reared, Switzerland-residing cofounder of blockchain platform Ethereum. Buterin is the technical person behind the Ethereum foundation promoting blockchain technologies and decentralized contracts. He is also working on a non-proft, Blockchain Labs, Buterin co-founded with Bo Shen, who also co-founded the decentralized exchange, or trading platform, BitShares, through his Invictus Innovations company, and Feng Xiao, vicechairman and executive director of Wanxiang Holdings, the auto parts company’s investment unit, and founder of the Bosera mutual fund company. And the three are all general partners in Fenbushi, which has backed Factom, Everledger, ZCash, Abra, Circle, Tierion, Gem, Otonomos and Symbiont, according to its website, and reportedly Ethcore. Blockchain, best known for being the underlying technology of digital currency Bitcoin, is a cryptographic public ledger that enables verifed, instant and low-cost transactions. Wanxiang expects to provide $1m of funding in each of the next three years to blockchain research through Blockchain Labs, which was instrumental in the creation of ChinaLedger, an alliance of regional commodity exchanges, equity exchanges and fnancial asset exchanges. In September, the Ethereum Foundation and Wanxiang’s Blockchain Labs held a joint developer conference, Devcon2, and the second Global Blockchain Summit in Shanghai, China. At the conference, Feng introduced a way of using the blockchain to track car batteries and monitor their usage, as reported by CoinDesk, which could allow them to be lent out to car makers. But perhaps the biggest project could see Wanxiang partner US-listed technology frms IBM and Microsoft to develop blockchain for a smart cities initiative. Wanxiang reportedly plans to invest $30bn in purchasing 83 million square feet of land as a foundation for its smart city project.
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Rising Stars In Corporate Venturing 2017

http://www.globalcorporateventuring.com/
Global Corporate Venturing is the media publication and data provider for the corporate venture capital industry. It has a unique database, GCV Analytics, to which numerous Fortune 1000 companies subscribe, and it runs multiple global events, with flagship conferences in Silicon Valley and London
 
Not too bad, out of 100 + :-)
http://www.globalcorporateventuring.com/data/files/RisingStars2017.pdf
15 Vitalik Buterin, Wanxiang
One of the most regular expectations from corporate venturers is there will be more cross-sector collaboration and innovative ideas funded. The poster child for how this can happen involves China-based auto parts maker Wanxiang, which has set up a $50m corporate venturing fund, Fenbushi Capital, which means distributed in Mandarin Chinese, in collaboration with Vitalik Buterin, the Russia-born, Canada-reared, Switzerland-residing cofounder of blockchain platform Ethereum. Buterin is the technical person behind the Ethereum foundation promoting blockchain technologies and decentralized contracts. He is also working on a non-proft, Blockchain Labs, Buterin co-founded with Bo Shen, who also co-founded the decentralized exchange, or trading platform, BitShares, through his Invictus Innovations company, and Feng Xiao, vicechairman and executive director of Wanxiang Holdings, the auto parts company’s investment unit, and founder of the Bosera mutual fund company. And the three are all general partners in Fenbushi, which has backed Factom, Everledger, ZCash, Abra, Circle, Tierion, Gem, Otonomos and Symbiont, according to its website, and reportedly Ethcore. Blockchain, best known for being the underlying technology of digital currency Bitcoin, is a cryptographic public ledger that enables verifed, instant and low-cost transactions. Wanxiang expects to provide $1m of funding in each of the next three years to blockchain research through Blockchain Labs, which was instrumental in the creation of ChinaLedger, an alliance of regional commodity exchanges, equity exchanges and fnancial asset exchanges. In September, the Ethereum Foundation and Wanxiang’s Blockchain Labs held a joint developer conference, Devcon2, and the second Global Blockchain Summit in Shanghai, China. At the conference, Feng introduced a way of using the blockchain to track car batteries and monitor their usage, as reported by CoinDesk, which could allow them to be lent out to car makers. But perhaps the biggest project could see Wanxiang partner US-listed technology frms IBM and Microsoft to develop blockchain for a smart cities initiative. Wanxiang reportedly plans to invest $30bn in purchasing 83 million square feet of land as a foundation for its smart city project.
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Decentralized Autonomous Communities and The Blockchain #5 - Co je Bitcoin? A jak funguje blockchain? Han, Founder of Otonomos // An Ethereum Interview Series Otonomos - Putting Companies on the Blockchain Bitcoin and the Autonomous Robot Economy

Autonomous Trucking and Blockchain Technology: Advancing Supply Chain Oversight. The vision of an autonomous trucking fleet is already becoming a reality for some freight companies. Uber, Waymo, Tesla, and Embark are all working on this technology. While autonomous driving is an interesting technology in itself, its application for the trucking Blockchain in Bitcoin (public chain) There are roughly two types of block chains: public chains and private chains. The former blockchain is operated by an unspecified number of network participants, and the latter blockchain has the characteristic that the operator can specify it. For Tesla'a autonomous "Robotaxi" fleet to operate as designed, it should implement Bitcoin’s Lightning Network which will serve as the primary payment rail coordinating all activity for the fleet. NewsBTC is a news service that covers bitcoin news, technical analysis & forecasts for bitcoin and other altcoins. Here at NewsBTC, we are dedicated to enlightening people all around the world about bitcoin and other cryptocurrencies. We cover news related to bitcoin exchanges, bitcoin mining and price forecasts for various virtual currencies. Blockchain technology is most commonly used by cryptocurrencies and was adapted by Satoshi Nakamoto to create and implement the cryptocurrency called Bitcoin. Blockchain is a distributed and public ledger, meaning it is available to everyone. Once the data is recorded, it will no longer be changed.

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Decentralized Autonomous Communities and The Blockchain

Filmed at the Startupbootcamp FinTech Singapore Demo Day, July 29, 2015. "Otonomos can help dematerializing your share certificates and write them on the blockchain." Professor Jeremy Pitt, Chair of intelligent and Self-organizing Systems at the Imperial College London, delivered this presentation during Bitcoin Wednesday at De Balie in Amsterdam on 2 September ... Beyond bitcoin: The future of blockchain and disruptive financial technologies - Duration: 1:53:41. ... Otonomos - Putting Companies on the Blockchain - Duration: 15:34. 💡V tomhle videu se vám pokusím vysvětlit, co je vlastně ten Bitcoin a jak funguje blockchain. 💰Nákup kryptoměn a $10 v Bitcoinu zdarma při nákupu nad $100: h... The real value of bitcoin and crypto currency technology - The Blockchain explained - Duration: 6:16. ... Autonomous robotic plane flies indoors at MIT - Duration: ...

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