Search results “Distributed ledger vs blockchain bitcoin”
Distributed Ledger
Take the full course: https://systemsacademy.io/courses/blockchain-introduction/ https://twitter.com/systemsacademy A distributed ledger can be described as a ledger of any transactions or contracts supported by a decentralized network from across different locations and people, eliminating the need for a central authority. All the information on it is securely and accurately stored using cryptography and can be accessed using keys and cryptographic signatures. Any changes or additions made to the ledger are reflected and copied to all participants in a matter of seconds or minutes.
Views: 14488 Systems Academy
Hashgraph vs Blockchain | Is This Is The End of Bitcoin ?
The Hashgraph is a protocol that provides a distributed consensus ledger. It allows community users to generate transactions, and agree on the order in which they did the transactions, in an environment where everyone trusts no single user. Blockchain distributed data structure that enables identifying and tracking transactions digitally and sharing this information across a the network, creating in a sense a distributed trust network. The distributed ledger technology offered by blockchain provides a transparent and secure means for tracking the ownership and transfer of assets. ================================================= 💰Get a Coinbase Wallet! - https://www.coinbase.com/join/5a4bf25... Sign up! 💰Get a Binance Wallet! - https://www.binance.com/?ref=21867060 Sign up! =================================================== ★ Any donation is highly appreciated. 🔑 BTC Wallet Address: 16EtKHG2rwH2NqA4MniK4JRhzPyv5AeiER 🔑 ETH Wallet Address: 0x1db0fa9a379e46cb205a39a0766e30d3e3d0d11e 🔑 LTC Wallet Address: LRcmBavhskBURqmw1sujV5LS8WUPvfaNj8 =================================================== ➤ How to Invest In Crypto: https://www.youtube.com/watch?v=M4Nlj-y9utI ➤Top Richest in Crypto: https://www.youtube.com/watch?v=Q2kT6ypgoVY ➤ Cool Facts About Bitcoin: https://www.youtube.com/watch?v=iOPn4f6OeyY ==================================================== Thank you so much for watching! ==================================================== Hashgraph | blockchain | hashgraph vs blockchain | Bitcoin | Cryptocurrency
Views: 10135 Aimstone
In this Video I explain the difference between blockchain and distributed ledger technology.. There are a lot of confusion between the two and two are not interchangible /.. USEFUL RESOURCES- 10 Years of Blockchain and Other DLTs http://fintechnews.sg/16989/blockchain/10-years-blockchain-the-race-is-on-blockchain-vs-tangle-vs-hashgraph/ WHats the Difference between DLT and Blockchain https://medium.com/nakamo-to/whats-the-difference-between-blockchain-and-dlt-e4b9312c75dd Types of Blockchain - https://blockchainhub.net/blockchains-and-distributed-ledger-technologies-in-general/ Advantages of BLOCKCHAIN. https://www.geeksforgeeks.org/introduction-to-blockchain/ DAG vs BLOCKCHAIN https://medium.com/coinmonks/dag-will-overcome-blockchain-problems-dag-vs-blockchain-9ca302651122 #CRYPTO CURRENCY NEVER SLEEPS #BITCOIN ***************TELEGRAM GROUP************** https://t.me/joinchat/F_s_hRKHMl2JumSnIhO7uQ ******************TELEGRAM CHANNEL*********** https://t.me/cryptoconversationshiv ************ ALSO AVAILABLE ON ******************* INSTAGRAM - https://www.instagram.com/crypto_conversation TWITTER -twitter.com/@shivfreespirit STEEMIT - https://steemit.com/@shiv123 FACEBOOK GROUP -Crypto Conversation Shiv ************************DISCLAIMER******************** DISCLAIMER- These videos are for Information , Education and Entertainment Purpose and my personal Opinion . None of them should be considered as Investment Advice or Suggestion. Participating in token sales is risky, please do so based on your research before contributing. *************THANK YOU FOR WATCHING************** *****************BUY A NANO LEDGER HARDWARE WALLET******* https://www.ledgerwallet.com/r/167c ***************************BINANCE****************************** Join Binance through the Link and Support the Channel https://www.binance.com/?ref=10270593 *******************SUPPORT********************************** If you wish to support the channel , you can do so here. OMG 0x0f9d78339C583e02b44f248A0E532B87B0A5b70D Bitcoin 15jRXvUnqgLsewuBwejsVPXAS64jVfiEbs Bitcoin Cash qqutg04rauv4cmkdprrrxhhl8larxld0r585xzkp4a Dash XwX96iqeoHVhZBbdhWqTixqKEkEHFTPhh1 ETH 0x0f9d78339C583e02b44f248A0E532B87B0A5b70D Litecoin LU3qTiFVsAS6BWwF9bGN2mzwzd72xxFoyD
Bitcoin, Blockchain, and Distributed Ledger Technology: Hype or Reality?
Settima lezione del corso Bitcoin and Blockchain Technology di Milano Bicocca (2017) slides ed altro materiale: https://www.ametrano.net/bbt/ donazioni bitcoin:1FEz167JCVgBvhJBahpzmrsTNewhiwgWVG Grazie a Paolo Aralla e BapuFilm (https://www.facebook.com/Bapufilm) per le riprese ed il montaggio
Views: 12001 Ferdinando M. Ametrano
Blockchain vs Distributed Ledger
A clip from our "Blockchain: The Future in Financial Services and Beyond" conference See more videos here: http://cfany.gallery.video/fullconference
Views: 3708 CFA Society New York
Introduction to Bitcoin, Blockchain, Distributed Ledger Technologies & Financial Inclusion
Presenter: Dr Leon Perlman Head, DFS Observatory, Columbia Business School Distributed ledger technology (DLT) is a new type of secure database or ledger for keeping track of who owns a financial, physical, or electronic asset, but without the need for a centralized controller of this data. Instead, the data is shared in a peer-to-peer manner across multiple sites, countries, or institutions A prime example of a DLT in commercial use is called ‘blockchain’ technology. It has the potential to: - Speed up and reduce the cost of transactions - Give individuals more control over their personal data - Reduce or remove the need for costly intermediaries - Provide secure ‘smart’ legal contracts that execute without user intervention - Bolster data security by providing almost real-time evidence of tampering, and - Revolutionize regulatory compliance. - This webinar is an introductory primer to all these technologies and their application in financial inclusion. It will touch on: - Their numerous strengths and weaknesses - The varied commercial and public-good applications that have been identified The implications of the disintermediation of traditional centralized controllers of data - Concerns in respect of the technology designs and their consistency - Issues in implementation and usage Security of DLTs - A sample of evolving legal and regulatory challenges and uncertainties around DLTs - Applications that may be particularly useful for financial inclusion, including remittances & identity systems, clearing and settlement, and land registration.
Views: 2158 DFS Observatory
Holochain vs Blockchain (Bitcoin)
Holochain is an energy efficient post-blockchain ledger system and decentralized application platform that uses peer-to-peer networking for processing agent centric agreement and consensus systems between users. The key advantage of Holochain is that every device on the network gets its own secure distributed sub-network and can function independently while also interacting with all the other devices on the network for a truly decentralized edge computing solution. ================================================= 🚀Let’s connect on Steemit: https://steemit.com/@astakhiv92 =================================================== 💰Get a Coinbase Wallet! - https://www.coinbase.com/join/5a4bf25... Sign up! 💰Get a Binance Wallet! - https://www.binance.com/?ref=21867060 Sign up! =================================================== ★ Any donation is highly appreciated. 🔑 BTC Wallet Address: 16EtKHG2rwH2NqA4MniK4JRhzPyv5AeiER 🔑 ETH Wallet Address: 0x1db0fa9a379e46cb205a39a0766e30d3e3d0d11e 🔑 LTC Wallet Address: LRcmBavhskBURqmw1sujV5LS8WUPvfaNj8 =================================================== ➤ My Crypto Portfolio: https://www.youtube.com/watch?v=_VR_s0hdy4U ➤ NEO vs EOS: https://www.youtube.com/watch?v=5P2FJiWYmo4 ➤ Top Projects on NEO: https://www.youtube.com/watch?v=_ReACJF7sQk ==================================================== Thank you so much for watching! ====================================================
Views: 10336 Aimstone
Blockchain 101 Ep 52 - The feature of blockchain asset Distributed ledger
The third feature of cryptocurrency is its distributed ledger. Your transaction request on a blockchain will not be delayed because of any public holiday, or be charged with a high transaction fee due to the bookkeeper wanting to make a profit; or suffer a loss from the bookkeeper’s dishonesty. All of these is done by a ledger distributed across the network. Your transaction record will be consistent and not be affected even if you lose a copy of it. This ledger is maintained by the entire network and every full node has a backup. If you transfer 0.5 Bitcoin to Mr Bull, both of you can just refer to the network record to see if the transaction is completed or number of confirmations etc. It is very transparent and fair. Huobi Global Exchange: https://www.huobi.com Follow us on: Blog: https://blog.huobi.com/ Facebook: https://www.facebook.com/huobiglobalofficial Instagram: https://www.instagram.com/huobiglobalofficial Medium: https://medium.com/@huobiglobal Telegram: https://t.me/huobiglobalofficial Twitter: https://twitter.com/HuobiGlobal Youtube: https://www.youtube.com/HuobiGlobal
Views: 384 Huobi Global
How does a blockchain work - Simply Explained
What is a blockchain and how do they work? I'll explain why blockchains are so special in simple and plain English! 💰 Want to buy Bitcoin or Ethereum? Buy for $100 and get $10 free (through my affiliate link): https://www.coinbase.com/join/59284524822a3d0b19e11134 📚 Sources can be found on my website: https://www.savjee.be/videos/simply-explained/how-does-a-blockchain-work/ 🐦 Follow me on Twitter: https://twitter.com/savjee ✏️ Check out my blog: https://www.savjee.be ✉️ Subscribe to newsletter: https://goo.gl/nueDfz 👍🏻 Like my Facebook page: https://www.facebook.com/savjee
Views: 2756297 Simply Explained - Savjee
3  Distributed Ledger The Blockchain
Over the past couple years there has been an explosion of growth and innovation in the bitcoin space, but many people still don’t really understand what bitcoin is, or why it’s exciting to so many entrepreneurs and investors. Draper University and Zapchain have come together with the goal of making the most comprehensive bitcoin course. By making bitcoin more approachable, we hope to inspire people to innovate with Bitcoin, because we believe that bitcoin has transformative potential. In this course we’ll teach you the fundamentals of bitcoin and introduce you to entrepreneurs who have been funded by tens of millions of dollars, the venture capitalists behind them, and some of the brightest engineers in Silicon Valley, all of whom will give us their unique insights into how bitcoin can change the world. If you’ve heard of bitcoin but still don’t quite understand what it is, or are interested in how new technology has the power to transform the financial industry today, then this course is definitely for you! Come join us at The Bitcoin Course. What you’ll learn Understand Bitcoin as both a technology and a currency at a high level Get started with a Bitcoin wallet and make your first purchase Understand Bitcoin in relation to other forms of money and legacy payment networks Create a Bitcoin node Are there any course requirements or prerequisites? This course is perfect for beginners - no prior knowledge about Bitcoin is necessary. An interest in Bitcoin and an open mind Who this course is for: This course is for anyone interested in learning the basics of Bitcoin as both a technology and a currency. No prior knowledge about Bitcoin is necessary. This course is probably not for you if you're looking for a deep technical dive into Bitcoin, blockchain technology and/or cryptography.
Views: 3 Udemy Course
How the blockchain will radically transform the economy | Bettina Warburg
Say hello to the decentralized economy -- the blockchain is about to change everything. In this lucid explainer of the complex (and confusing) technology, Bettina Warburg describes how the blockchain will eliminate the need for centralized institutions like banks or governments to facilitate trade, evolving age-old models of commerce and finance into something far more interesting: a distributed, transparent, autonomous system for exchanging value. TEDTalks is a daily video podcast of the best talks and performances from the TED Conference, where the world's leading thinkers and doers give the talk of their lives in 18 minutes (or less). Look for talks on Technology, Entertainment and Design -- plus science, business, global issues, the arts and much more. Find closed captions and translated subtitles in many languages at http://www.ted.com/translate Follow TED news on Twitter: http://www.twitter.com/tednews Like TED on Facebook: https://www.facebook.com/TED Subscribe to our channel: http://www.youtube.com/user/TEDtalksDirector
Views: 1526170 TED
The Bitcoin Blockchain Explained
Forget the currency; it’s the protocol behind it that matters. Blockchains will mutate and take over everything we do on the Web. Trusting strangers with your digital information may sound silly, but it’s actually a revolution in distributed computing. And one day, systems like Bitcoin could be the future of all secure digital transactions. Read more: http://bit.ly/29jiJ3B
Views: 112662 IEEE Spectrum
Blockchain vs. Bullshit: Thoughts on the Future of Money
In this talk "Blockchain vs. Bullshit - Thoughts on the Future of Money," Andreas outlines the necessary criteria that will help you distinguish blockchains from bullshit, and why the goal of developing this technology should not be "banking the unbanked" but rather de-banking all of us. This keynote talk took place at the Blockchain Africa Conference on March 2nd 2017 at the Focus Rooms in Johannesburg, South Africa: http://blockchainafrica.co/speakers/andreas-m-antonopoulos/ TOPICS: The hype and empty promises around "blockchain" 2:30 Reconsidering info security, research in applied cryptography 4:45 Blockchains vs. databases 7:13 The essence of Bitcoin: revolutionizing trust 8:33 Open blockchains are the only ones that matter 10:24 Censorship resistance and other important characteristics 13:12 Criteria: blockchain or bullshit? 14:05 Fundamentally changing the allocation of trust 15:45 Permissioned "distributed ledgers" are boring & insecure 16:43 Hey Wall Street, Anonymous is coming for your keys 21:48 Promising opportunities, solving the unsolvable problems 23:06 The 3 elements to success in this industry 24:50 The necessary steps to mature out of infancy 27:44 QUESTION & ANSWER: Hot vs. cold wallets - https://youtu.be/Aji_E9sw0AE The revolution in trust - https://youtu.be/iWfpxB3HZOY RELATED: Blockchain for Beginners - https://youtu.be/i9nUMvpT2rM How to get people to care about security - https://youtu.be/Ji1lS9NMz1E Welcome to TrustNet - https://youtu.be/Rrj8sjHJthU Hardware, Software, Trustware - https://youtu.be/Etyjc1JdmFU Initial coin offerings (ICOs) - https://youtu.be/Q5R8KuxV4A0 What are the most exciting recent developments? - https://youtu.be/bCG5og_LwZY Trust, promise of value, and intrinsic utility - https://youtu.be/Cxc9ybot9oM The oxymoron of national blockchains - https://youtu.be/qSIBFBq9tRs Private chains misunderstand the fundamental value of blockchains - https://youtu.be/haKVaGHKQJM Andreas M. Antonopoulos is a technologist and serial entrepreneur who has become one of the most well-known and well-respected figures in bitcoin. Follow on Twitter: @aantonop https://twitter.com/aantonop Website: https://antonopoulos.com/ He is the author of two books: “Mastering Bitcoin,” published by O’Reilly Media and considered the best technical guide to bitcoin; “The Internet of Money,” a book about why bitcoin matters. Subscribe to the channel to learn more about Bitcoin & open blockchains; click on the red bell to enable notifications about new videos! MASTERING BITCOIN, 2nd Edition: https://amzn.to/2xcdsY9 Translations of MASTERING BITCOIN: https://bitcoinbook.info/translations-of-mastering-bitcoin/ THE INTERNET OF MONEY, v1: https://amzn.to/2ykmXFs THE INTERNET OF MONEY, v2: https://amzn.to/2IIG5BJ Translations of THE INTERNET OF MONEY: Spanish, 'Internet del Dinero' (v1) - https://amzn.to/2yoaTTq French, 'L'internet de l'argent' (v1) - https://www.amazon.fr/Linternet-largent-Andreas-M-Antonopoulos/dp/2856083390 Russian, 'Интернет денег' (v1) - https://www.olbuss.ru/catalog/ekonomika-i-biznes/korporativnye-finansy-bankovskoe-delo/internet-deneg Vietnamese, 'Internet Của Tiền Tệ' (v1) - https://alphabooks.vn/khi-tien-len-mang MASTERING ETHEREUM (Q4): https://amzn.to/2xdxmlK Music: "Unbounded" by Orfan (https://www.facebook.com/Orfan/) Outro Graphics: Phneep (http://www.phneep.com/) Outro Art: Rock Barcellos (http://www.rockincomics.com.br/)
Views: 282205 aantonop
TED Talks: The Blockchain Explained Simply
YOcoin based on the Ethereum Blockchain is Bitcoin 2.0 This is the Future of Cryptocurrency... Sign up and purchase YOcoin at the secure link below. www.YOcoinEX.org or www.YOcoinUSA.org Feel free to ask any questions Learn more at www.YOcoin.org Facebook- www.Facebook.com/YOcoinUSA/ Instagram- www.Instagram.com/YOcoinUSA/ Twitter- www.Twitter.com/YOcoinUSA
Views: 516808 YOcoin
Distributed Ledger Technology
How does distributed ledger technology work in the Blockchain? Colin Platt, DPactum You can view this video and the full video archive on the Dukascopy TV page: http://www.dukascopy.com/tv/en/#198535 Смотрите Dukascopy TV на вашем языке: http://www.youtube.com/user/dukascopytvrussian 用您的语言观看杜高斯贝电视: http://www.youtube.com/user/dukascopytvchinese Miren Dukascopy TV en su idioma: http://www.youtube.com/user/dukascopytvspanish Schauen Sie Dukascopy TV in Ihrer Sprache: http://www.youtube.com/user/dukascopytvgerman Regardez la Dukascopy TV dans votre langue: http://www.youtube.com/user/dukascopytvfrench Veja a TV Dukascopy na sua língua: http://www.youtube.com/user/dukascopytvpt
Views: 5698 Dukascopy TV (EN)
What is Blockchain Distributed Ledger ?
#Blockchain is one type of a #distributed_ledger. #Distributed_ledgers use independent computers (referred to as nodes) to record, share and synchronize transactions in their respective electronic #ledgers (instead of keeping data centralized as in a traditional ledger). #Blockchain organizes data into blocks, which are chained together in an append only mode. #Blockchain/ #DLT are the building block of “internet of value,” and enable recording of interactions and transfer “value” peer-to-peer, without a need for a centrally coordinating entity. “Value” refers to any record of ownership of asset -- for example, money, securities, land titles -- and also ownership of specific information like identity, health information and other personal data. #Distributed_ledger_technology (DLT) could fundamentally change the financial sector, making it more efficient, resilient and reliable. This could address persistent challenges in the financial sector and change roles of financial sector stakeholders. #DLT has the potential to transform various other sectors as well, like manufacturing, government financial management systems and clean energy. Since this #technology is still nascent, the World Bank Group doesn’t have general recommendations about its use for international development. We are in dialogue with standard-setting bodies, governments, central banks and other stakeholders to monitor, research and pilot applications based on #blockchain and #DLT. However, waiting for “perfect” #DLT solutions could mean missing an opportunity to help shape it. To understand how #DLT can address challenges in the financial sector requires both research and real-life applications and pilots. It also requires resolving consumer protection issues, financial integrity concerns, speed of transactions, environmental footprint, legal, regulatory and technological issues that arise with the advent of new technology. #DLT applications will likely be incremental, and will likely first replace processes and activities that are still manual and inefficient. (Such as reference data maintenance in payment and settlement systems, trade finance, syndicated loans, and tracking provenance of agricultural products and commodities, their subsequent sale or use as financing collateral.) Eventually, #DLT could increase efficiency and lower remittance costs, and potentially improve access to finance for unbanked populations, who are currently outside the traditional financial system.
Views: 419 CHANNEL V
Consensus and Mining on the Blockchain
Consensus and Mining on the Blockchain - https://blockgeeks.com/ What is consensus on the blockchain? Consensus basically means that all nodes in a decentralized network must come to an agreement on what is the truth. For bitcoin, all nodes must agree on the transaction history. In a centralized system, all the participants trust that the authority will behave honestly and share the truth with the rest of the members. Since only the trusted party has the power to modify the data, it is straightforward to achieve consensus. Everyone simply accepts and believes what the central authority says. For example, you simply trust your bank will put the correct balance for your account whenever you send and receive money. However, in a decentralized network, there is no central authority and each node does not trust any other nodes. The challenge is how can all the nodes agree on what is the correct state of the shared data? In other words, how can they all achieve consensus with mutual distrust? In computer science, this is known as the Byzantine Generals’ problem, which was originally presented in 1982. The Byzantine Generals’ problem is a description of consensus problems in computer networks. More specifically, how can distributed computer systems handle malfunctioning parts that give conflicting information to different parts of the system? This problem is abstractly described as a group of generals of the Byzantine army camped with their troops surrounding an enemy city. The generals must agree upon a common battle plan and they can only communicate with each other using messengers. However, one or more of the generals may be traitors who will try to confuse the others. The problem is to find an algorithm that ensures the loyal generals will all reach an agreement on the battle plan regardless of what the traitors do. In the case of bitcoin, each general could be thought of as a node in the network and all the honest nodes must agree on what is the true history of transactions. A malicious node can send conflicting transactions to different parts of the network. For example, Bob is a traitor and he sends a transaction stating he sent 10 bitcoins to Alice to one part of the network while sending another transaction stating he sent 10 bitcoins to Carroll to other parts of the network. Let’s assume that Bob only has 10 bitcoins in total, so he is trying to double spend his bitcoins. So what algorithm can be used in the bitcoin network to ensure all the honest nodes recognize Bob sent 10 bitcoins to Alice but reject that he sent 10 bitcoins to Carroll? Bitcoin uses the proof-of-work (PoW) algorithm to ensure all the honest nodes reach a consensus on the true history of transactions. The PoW algorithm concept was first developed in the early 90s to prevent email spamming. It required computers that want to send an email to do some computation work which took some time to complete before sending out the email. This reduced the amount of spam an email server could get in a given period of time. In bitcoin, PoW is used to govern the mechanics of how a new block is added to the blockchain. In the previous lesson, we learned that blockchain is append-only and once a block is added, it cannot be modified. Therefore, we need to ensure that all the honest nodes in the system will add the exact same block to their local copy of the blockchain to achieve consensus. So how does PoW achieve this? First, let’s imagine that all the nodes in the network are allowed to create a new block at anytime instantly. If this were the case, the network would get flooded with too many new blocks, and no one would be able to agree on which of the new blocks should be added to the blockchain. However, in reality, in order for a node to create a new block and broadcast that to the other nodes, it must do some computation work. The computation work is quite intensive and for bitcoin it takes roughly 10 minutes on average for any node to complete. Once a node completes this work, it broadcasts the block to other nodes who verify it. Therefore, all the nodes in the network that want to create a new block must race against each other to be the first one to complete this computation and broadcast their block. This way all the other honest nodes will receive the new block and verify that the proof of work was valid and the transactions inside the block are also correct and then add the block to their local copy of the blockchain. To read more, visit us at https://blockgeeks.com/
Views: 7448 Blockgeeks
CityChain17 - What is the difference between a Blockchain and a database by Gideon Greenspan
CityChain17 brought together Blockchain and Distributed Ledger thought leaders and entrepreneurs from across the globe. The aim was to provide the best and latest informed thinking and hype-free exploration of ideas, use cases, challenges, and concerns. The event was targeted at businesses, technologists, students, and academics with a need or desire to know more and to hear of the very best thinking in this important sector.
Views: 8215 MBN Solutions
Bitcoin, Blockchain, and Distributed Ledger Technology  Hype or Reality
ABONNIEREN 2,3 TSD. Subscribe Subscribed Unsubscribe Settima lezione del corso Bitcoin and Blockchain Technology di Milano Bicocca (2017)
Views: 4 Bananen Brot
Distributed Ledgers, Blockchains and Smart Contracts
An introduction into the ideas, technologies, and use cases of distributed ledgers, blockchains and smart contracts.
Hashgraph Founder's Crash Course in Distributed Ledger Technologies - Leemon Baird
Since releasing Episode 8 of Hidden Secrets Of Money, we've fielded many questions about some of the cryptocurrencies and blockchain projects that weren't included in the episode due to time constraints. In this bonus video, Leemon Baird gives Mike Maloney an excellent rundown of the pros and cons of the various blockchain/consensus protocols. Watch the full episode, and many other bonus features like this one at: https://goldsilver.com/hidden-secrets/hidden-secrets-of-money-episode-8 If you enjoyed watching this video, be sure to pick up a free copy of Mike's bestselling book, Guide to Investing in Gold & Silver: https://goldsilver.com/buy-online/investing-in-gold-and-silver/ (Want to contribute closed captions in your language for our videos? Visit this link: http://www.youtube.com/timedtext_cs_panel?tab=2&c=UCThv5tYUVaG4ZPA3p6EXZbQ)
The Bitcoin and Blockchain Technology Explained
A block chain is a transaction database shared by all nodes participating in a system based on the Bitcoin protocol. A full copy of a currency's block chain contains every transaction ever executed in the currency. With this information, one can find out how much value belonged to each address at any point in history. ------------------------------------------------------------------- BUY BITCOIN SAFELY HERE: http://bit.ly/BuyBitcoinNow ------------------------------------------------------------------- REGISTER FOR A COINBASE ACCOUNT: http://bit.ly/CoinbaseBitcoinSignup ------------------------------------------------------------------- Every block contains a hash of the previous block. This has the effect of creating a chain of blocks from the genesis block to the current block. Each block is guaranteed to come after the previous block chronologically because the previous block's hash would otherwise not be known. Each block is also computationally impractical to modify once it has been in the chain for a while because every block after it would also have to be regenerated. These properties are what make double-spending of bitcoins very difficult. The block chain is the main innovation of Bitcoin. Honest generators only build onto a block (by referencing it in blocks they create) if it is the latest block in the longest valid chain. "Length" is calculated as total combined difficulty of that chain, not number of blocks, though this distinction is only important in the context of a few potential attacks. A chain is valid if all of the blocks and transactions within it are valid, and only if it starts with the genesis block. For any block on the chain, there is only one path to the genesis block. Coming from the genesis block, however, there can be forks. One-block forks are created from time to time when two blocks are created just a few seconds apart. When that happens, generating nodes build onto whichever one of the blocks they received first. Whichever block ends up being included in the next block becomes part of the main chain because that chain is longer. More serious forks have occurred after fixing bugs that required backward-incompatible changes. Blocks in shorter chains (or invalid chains) are not used for anything. When the bitcoin client switches to another, longer chain, all valid transactions of the blocks inside the shorter chain are re-added to the pool of queued transactions and will be included in another block. The reward for the blocks on the shorter chain will not be present in the longest chain, so they will be practically lost, which is why a network-enforced 100-block maturation time for generations exists. These blocks on the shorter chains are often called "orphan" blocks. This is because the generation transactions do not have a parent block in the longest chain, so these generation transactions show up as orphan in the listtransactions RPC call. Several pools have misinterpreted these messages and started calling their blocks "orphans". In reality, these blocks have a parent block, and might even have children. Because a block can only reference one previous block, it is impossible for two forked chains to merge. • How do Bitcoin Transactions Work? http://www.coindesk.com/information/how-do-bitcoin-transactions-work/ ------------------------------------------------------------------- DID YOU LIKE THIS VIDEO? ------------------------------------------------------------------- Enjoy this video? Click "Mark as good" and give your "LIKE". Subscribe to our channel and follow our publications. Consider making a small Bitcoin donation to this address: 3C2Ti2wegJDFw1Kp3w71Mtr9bKkhyCz8fa. ------------------------------------------------------------------- BUY BITCOIN SAFELY HERE: http://bit.ly/BuyBitcoinNow ------------------------------------------------------------------- REGISTER FOR A COINBASE ACCOUNT: http://bit.ly/CoinbaseBitcoinSignup ------------------------------------------------------------------- ------------------------------------------------------------------- Video credits ------------------------------------------------------------------- http://www.bitcoinproperly.org/ Tags: BTC Bitcoin Bit coin Altcoin Cryptocurrency Buy Bitcoin Sell Bitcoin Bitcoin trading Bitcoin value Bitcoin wallet Bitcoin blockchain Blockchain Satoshi Nakamoto Digital currency
Views: 398395 Rodrigo Henrik
The Future of Blockchain: Applications and Implications of Distributed Ledger Technology
Technology has transformed how we work, play and do business. It has provided new solutions to old problems, disrupted traditional business models and helped us become more efficient. In 2015, Deloitte Access Economics published a report that suggests the digital economy in 2020 could be worth A 139 billion. This growth will be underpinned by new technologies. One of these is distributed ledger technology and its most common application – blockchain. In 2016, The World Economic Forum lists blockchain as one of the top ten emerging technologies. Listen to the in depth conversation on all things Blockchain between Geraldine Magarey FCA Leader, Policy and Thought Leadership and Charlotte Evett CA Senior Policy Advisor who recently returned from the Consensus Blockchain summit in New York. Geraldine Magarey FCA Leader, Policy & Thought Leadership Geraldine is Leader, Policy and Thought leadership based in Sydney. She leads Chartered Accountants ANZ’s thought leadership program future[inc] as well as being responsible for policy and technical guidance around business issues, including the digital economy, technology and its impact on accounting, diversity and cyber security to Chartered Accountants, government, regulators and business. Recent future[inc] papers have included the Future of Talent, the Future of Work and the Regulator of 2030. Geraldine is a chartered accountant with over 25 years of experience in the finance and auditing profession including over ten years with Big 4 accounting firms in London, Sydney and Adelaide and an in-house role with an Australian subsidiary of a global media and entertainment company. Prior to joining Chartered Accountants ANZ, she was a senior manager at the Australian Securities and Investments Commission (ASIC), where she was involved in the strategic direction and management of the accountants and auditors team. Charlotte Evett CA Senior Policy Advisor Charlotte Evett CA is a Senior Policy Advisor in the Policy and Thought Leadership team at Chartered Accountants Australia and New Zealand. Charlotte has worked in a variety of roles across practice and industry in New Zealand, the US and the UK, and has a particular interest in technology and its impact on society. This was enhanced after recently attending the Consensus Blockchain summit in New York. Charlotte has spoken and blogged about Blockchain and its impact on the profession, and was a contributor to Chartered Accountants Australia and New Zealand’s future[inc] papers on both Bitcoin and Blockchain. To read the future[inc] publication please follow the link below. https://www.charteredaccountantsanz.com/news-and-analysis/insights/future-inc/the-future-of-blockchain
Distributed Ledger Technologies like Blockchain…looking under the hood
As part of the E-Learning 3.0 course, I take a look at the technology underlying digital currencies like Bitcoin. The talk covers how blocks are constructed, how consensus is established, applications of blockchain, coins, digital wallets, distributed applications, frameworks, and issues related to blockchain. Help us caption & translate this video! https://amara.org/v/mb0l/
Views: 138 Stephen Downes
What is DISTRIBUTED LEDGER? What does DISTRIBUTED LEDGER mean? DISTRIBUTED LEDGER meaning - DISTRIBUTED LEDGER definition - DISTRIBUTED LEDGER explanation. SUBSCRIBE to our Google Earth flights channel - https://www.youtube.com/channel/UC6UuCPh7GrXznZi0Hz2YQnQ Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. A distributed ledger (also called a shared ledger, or referred to as distributed ledger technology) is a consensus of replicated, shared, and synchronized digital data geographically spread across multiple sites, countries, or institutions. There is no central administrator or centralized data storage. A peer-to-peer network is required as well as consensus algorithms to ensure replication across nodes is undertaken. One form of distributed ledger design is the blockchain system, which can be either public or private. But not all distributed ledgers have to necessarily employ a chain of blocks to successfully provide secure and valid achievement of distributed consensus: a blockchain is only one type of data structure considered to be a distributed ledger. In 2016, numerous banks tested distributed ledgers for international payments. Incumbent banks are investing heavily in distributed ledgers as a cost-saving measure and a way to reduce operational risks. The future use of distributed ledgers is expected to monetize the Internet of things in a programmable economy.
Views: 962 The Audiopedia
19 Industries The Blockchain Will Disrupt
The blockchain is a distributed ledger technology that underlies cryptocurrencies like Bitcoin and platforms like Ethereum. It provides a way to record and transfer data that is transparent, safe, auditable, and resistant to outages. The blockchain has the ability to make the organizations that use it transparent, democratic, decentralized, efficient, and secure. It's a technology that holds a lot of promise for the future, and it is already disrupting many industries. Original post: http://futurethinkers.org/industries-blockchain-disrupt More podcasts & videos about the blockchain: http://futurethinkers.org/blockchain Support us on Patreon: https://www.patreon.com/futurethinkers Check out our merch store: https://www.redbubble.com/people/futurethinkers Blockchain startups and projects featured in this video: Bitcoin - https://bitcoin.org/ Abra - https://www.goabra.com/ Provenance - https://www.provenance.org/ Fluent (Rebranded to Hijro) - https://hijro.com/ SKUChain - https://skuchain.com/ Blockverify - http://www.blockverify.io/ Augur - https://augur.net/ Networking and IoT Adept - http://www.coindesk.com/ibm-reveals-proof-concept-blockchain-powered-internet-things/ Aeternity - https://www.aeternity.com/ Arcade City - https://arcade.city/ La'Zooz - http://www.shareable.net/blog/lazooz-the-decentralized-crypto-alternative-to-uber Innogy - https://bitcoinmagazine.com/articles/innogy-charges-new-electric-car-fleet-using-ethereum-blockchain/ UBS - https://www.ubs.com/microsites/blockchain-report/en/home.html ZF - http://www.econotimes.com/UBS-bank-innogy-and-ZF-partner-to-provide-blockchain-backed-wallets-for-cars-471860 Online Data Storage Storj - https://storj.io/ IPFS - https://ipfs.io/ BitGive Foundation - https://bitgivefoundation.org/ Democracy Earth - http://democracy.earth/ Follow My Vote - https://followmyvote.com/ GovCoin - http://www.businesswire.com/news/home/20160707005803/en/GovCoin-Systems-Implements-Social-Welfare-Payments-Distribution Dubai Blockchain Strategy - http://www.smartdubai.ae/dubai_blockchain.php Circles - aboutcircles.com Gem - https://gem.co/ Tierion - https://tierion.com/ TransactiveGrid - http://transactivegrid.net/ Mycelia - http://myceliaformusic.org/ Ujo Music - https://ujomusic.com/ OpenBazaar - https://www.openbazaar.org/ OB1 - https://ob1.io/ Ubitquity - https://www.ubitquity.io/ Consensys - https://consensys.net/about/ Ethereum - https://www.ethereum.org/ Future Thinkers is a podcast about evolving technology, society and consiousness. If you want to learn more about the blockchain technology, you can listen to some of our episodes going in depth. http://futurethinkers.org/blockchain/ Support us on Patreon: https://www.patreon.com/futurethinkers Donate through Paypal or cryptocurrency: http://futurethinkers.org/support Check out our merch store: https://www.redbubble.com/people/futurethinkers The Ancient Art Of Adulting - Take the course designed to help you create a life of meaning, purpose and impact: http://www.futurethinkers.org/adulting
Views: 1455871 Future Thinkers
Distributed Ledger Technology | Distributed Systems in One Lesson | Intellipaat
Intellipaat Blockchain Course:- https://intellipaat.com/blockchain-training-course/ This distributed ledger technology is an introduction to distributed system, what is distributed ledger and how peer to peer technology works in blockchain in this Blockchain tutorial in detail Interested to learn Distributed Systems in One Lesson from scratch still more? Please check what does Blockchain do? and other Blockchain tutorial blogs here:- https://goo.gl/to9dkc Watch complete Distributed Ledger Technology, Blockchain technology & Cryptocurrencies tutorial here:- https://goo.gl/uNyVWZ This Distributed Systems in One Lesson video helps you to learn following topics: 00:06 – Distributed System 00:42 – Distributed Ledger Technology 02:44 – Peer to Peer Technology Are you looking for something more? Enroll in our Blockchain Course and become a certified Blockchain Professional (https://goo.gl/o16vij). It is a 32 hrs instructor led Blockchain from Scratch training provided by Intellipaat which is completely aligned with industry standards and certification bodies. If you’ve enjoyed this Distributed Systems in One Lesson tutorial, Like us and Subscribe to our channel for more similar Distributed Ledger Technology videos and free tutorials. Got any questions about Distributed Ledger? Ask us in the comment section below. ---------------------------- Intellipaat Edge 1. 24*7 Life time Access & Support 2. Flexible Class Schedule 3. Job Assistance 4. Mentors with +14 yrs 5. Industry Oriented Course ware 6. Life time free Course Upgrade ------------------------------ Why should you watch this Distributed Ledger Tutorial? Blockchain has been ushered in as one of the revolutionary technologies that can herald the advent of the fourth industrial revolution. It is a decentralized, peer-to-peer network which is the underlying infrastructure for bitcoin which is now finding increased applications across industrial sectors the prominent among them being banking and financial services. This Intellipaat Distributed Ledger will familiarize you with introduction to distributed system, what is distributed ledger and how peer to peer technology works in blockchain and other various Blockchain technology concepts which will help you to command big salaries. Blockchain technology today is very robust and there are a lot of aspects like Solidity programming language, distributed ledger cloud platform, ethereum & bitcoin cryptocurrency. We are offering the top Blockchain tutorial to gain knowledge in Blockchain from Scratch. Our Blockchain course has been created with extensive inputs from the industry experts so that you can learn what does Blockchain do? and apply it for real world scenarios. Who should watch this Distributed Ledger Technology video? If you want to learn Blockchain to become an Blockchain expert then this Intellipaat Blockchain Distributed Ledger Technology is for you. The Intellipaat Blockchain & Ethereum video is your first step to learn Blockchain. We are covering the most important Solidity, ethereum, the concepts of distributed ledger, hyperledger, multichain, Cryptocurrencies, bitcoin mining, architecture, core layers, application and more with Hands on Projects in our blockchain course. Since this Blockchain tutorial can be taken by anybody, so if you are a beginner in technology then you can also watch other Blockchain tutorial to take your skills to the next level. Why Bitcoin & Blockchain is important? Blockchain technology is taking over each and every industry domain & now finding increased applications across industrial sectors. Cryptocurrencies & Ethereum are the most important aspects of Blockchain that are being deployed everywhere from banking, financial services and others. Taking the Intellipaat Blockchain training & Blockchain Course can help professionals to build a solid career in a rising technology domain and get the best jobs in top organizations. Why should you opt for a Blockchain career? If you want to fast-track your career then you should strongly consider Blockchain. The reason for this is that it is one of the fastest growing technology. There is a huge demand for professionals in Blockchain & Cryptocurrency expert. The salaries for Blockchain professionals is fantastic.There is a huge growth opportunity in this domain as well. Hence this Intellipaat introduction to distributed system, what is distributed ledger and how peer to peer technology tutorial is your stepping stone to a successful career! ------------------------------ For more Information: Please write us to [email protected], or call us at: +91- 7847955955 Website: https://goo.gl/o16vij Facebook: https://www.facebook.com/intellipaatonline LinkedIn: https://www.linkedin.com/in/intellipaat/ Twitter: https://twitter.com/Intellipaat
Views: 347 Intellipaat
Impact of Blockchain/Distributed Ledger on Financial Services and Payment Systems
On January 14, Brookings convened roundtable technical discussions about the future of distributed ledger technology with industry and policy stakeholders. http://www.brookings.edu/events/2016/01/14-beyond-bitcoin-blockchain-disruptive-financial-technologies Subscribe! http://www.youtube.com/subscription_center?add_user=BrookingsInstitution Follow Brookings on social media! Facebook: http://www.Facebook.com/Brookings Twitter: http://www.twitter.com/BrookingsInst Instagram: http://www.Instagram.com/brookingsinst LinkedIn: http://www.linkedin.com/com/company/the-brookings-institution
Views: 7294 Brookings Institution
Blockchain 101: An Introduction to Distributed Ledger Technology (DLT) and Cryptocurrencies
Note: All views expressed are solely my own and do not reflect the views of any of the coins or foundations being reviewed. Follow @CryptoDemetrius on Twitter and consider subscribing to my youtube channel! If you found this video helpful, consider sending me some tips at the addresses below! Bitcoin/BTC Address: 1Po3dGSEMdCzNh1BuNqeiWyUsJ9Pt87xSR Dogecoin Address: DAkcVnk5bH2kSf7djvtWhnSDqeuw3sSJ38 NEM/XEM Address: NAORLTBMK5Q7J44GMHISICZDOGK42BQBTP5GDYMF Ethereum/ETH Address: 0x6F1446b6A3a29caa2fB9fE686407D7816F34D6bE
Views: 187 CryptoDemetrius
How Bitcoin Works Under the Hood
A somewhat technical explanation of how Bitcoin works. Want more? Check out my new in-depth course on the latest in Bitcoin, Blockchain, and a survey of the most exciting projects coming out (Ethereum, etc): https://app.pluralsight.com/library/courses/bitcoin-decentralized-technology Lots of demos on how to buy, send, store (hardware, paper wallet). how to use javascript to send bitcoin. How to create Ethereum Smart Contract, much more. Shorter 5 min introduction: https://www.youtube.com/watch?v=t5JGQXCTe3c Written version: http://www.imponderablethings.com/2013/07/how-bitcoin-works-under-hood.html My Bitcoin address: 13v8NB9ScRa21JDi86GmnZ5d8Z4CjhZMEd Arabic translation by Ahmad Alloush Spanish caption translation by Borja Rodrigo, [email protected], DFJWgXdBCoQqo4noF4fyVhVp8R6V62XdJx Russian caption translation by Alexandra Miklyukova Italian voice over: http://youtu.be/1aEf3qr7UdE Italian captions translated by Simone Falcini, 1H5KdCnBooxfqpXtyQBBAKKRU7MkCZCVCe
Views: 2658146 CuriousInventor
Beyond bitcoin: The future of blockchain and disruptive financial technologies
On January 14, the Hutchins Center on Fiscal and Monetary Policy at Brookings explored the future of distributed ledger technology, paying special attention to the innovation’s impact on financial services and policymaking. http://www.brookings.edu/events/2016/01/14-beyond-bitcoin-blockchain-disruptive-financial-technologies Subscribe! http://www.youtube.com/subscription_center?add_user=BrookingsInstitution Follow Brookings on social media! Facebook: http://www.Facebook.com/Brookings Twitter: http://www.twitter.com/BrookingsInst Instagram: http://www.Instagram.com/brookingsinst LinkedIn: http://www.linkedin.com/com/company/the-brookings-institution
Views: 36544 Brookings Institution
Block chain technology
Read our report on the future of distributed ledger (or block chain) technology https://www.gov.uk/government/publications/distributed-ledger-technology-blackett-review
Views: 249070 GO-Science
"Blockchain" or Bitcoin: Understanding the differences
In this talk, Andreas explores the rise of the term "blockchain" as a counterweight to bitcoin. The term blockchain does not provide a definition, as it has been diluted to be meaningless. Saying "blockchain" simply invites questions, such as "what is the consensus algorithm". Meanwhile, bitcoin continues to offer an alternative to the traditional financial system. Andreas looks at the value of private ledgers, which he sees as having a small impact on finance, versus open, global and accessible payment and currency systems such as bitcoin which he sees as fostering a global revolution in finance and access to financial tools. Want to hear more about Bitcoin and open blockchains? Follow on Twitter: @aantonop Visit my website: https://antonopoulos.com/ Read more: “Mastering Bitcoin” - https://www.bitcoinbook.info/ “The Internet of Money” - https://www.amazon.com/Internet-Money-Andreas-M-Antonopoulos/dp/1537000454 via OpenBazaar: ob://efece349f9830a6d6167c3bbc6ed3ce855277a8f (https://duosear.ch/efece349f9830a6d6167c3bbc6ed3ce855277a8f/listing/974a62586f0e48c53b7c19592f9ceb64a4b08e84)
Views: 62321 aantonop
Bitcoin and CryptoCurrency - What is a Distributed Open Ledgers - Blockchain Ledgers
So you've heard about Bitcoin and Crypto - but what's the deal with Distributed Open Ledgers or Open Distributed Ledgers? How does a peer to peer transaction actually work, what/who are nodes and why and how do people mine bitcoin? If you enjoyed: Bitcoin and CryptoCurrency - What is a Distributed Open Ledgers - Blockchain Ledgers - SMASH that LIKE BUTTON and SHARE on SOCIAL MEDIA! Matt McKeever Business Inquires: [email protected] Coaching: [email protected] (Seriously though, you should watch everyone of my videos, before you contact me about this, if you watched all of my videos - I don't think you'll need this - but people keep asking anyways....) Matt’s Bible: Early Retirement Extreme: http://amzn.to/2qgFBNK Facebook: https://www.facebook.com/groups/LDNonFIRE/ Instagram: http://www.instagram.com/mattmckeever85 Twitter: https://twitter.com/mattmckeever85 SUBSCRIBE: https://www.youtube.com/channel/UCdRtqnqBSq4GY7DGiYICu5g?sub_confirmation=1 Bigger Pockets: https://www.biggerpockets.com/users/MattMcK Check out my podcast with Kellan: http://onfirepodcast.ca/ Matt McKeever is a CPA, CA and Real Estate Entrepreneur in London, Ontario. On this YouTube Channel Matt will walk the viewer through how to invest in real estate using such strategies as the BRRRR method while also documenting his personal experience as a real estate investor. Matt began investing in real estate at age 25 by purchasing a student rental near Fanshawe College. In 2016 he's acquired over 25 unit and in 2017 acquired over 25 units. As well on this channel Matt will share his personal monthly spending and discuss the strategies and tactics needed to reach financial independence (retire early) at a young age. We’ll discuss such topics as safe withdrawal rates, how to build passive income streams and how to reduce your personal consumption.
Views: 164 Matt McKeever
What is Blockchain?
The rapid surge in the price of Bitcoin has brought discussion on cryptocurrencies and distributed ledger technologies (DLT) into the mainstream. But why all the hype? Before diving into such topics, it is important to have a foundation on the technology behind cryptocurrencies: blockchain. Blockchain is shorthand for a whole suite of a distributed ledger technologies that can be programmed to record and track anything of value, from financial transactions, medical records or land titles. This video is an accessible introduction to blockchain technology: how it tracks and stores data, how it fosters trust, and how it facilitates peer-to-peer transactions without the involving middlemen like bankers or lawyers. Blockchain’s potential for underpinning online interaction is limitless. But, much like the rise of the internet, this new technology brings with it complex questions around governance, international law, security, and economics.
Permissioned Blockchains and Databases
Speaker: Dr. C. Mohan IBM Fellow and Former IBM India Chief Scientist IBM Almaden Research Center Abstract: Blockchain (distributed ledger), the underlying technology of Bitcoin, has become very popular for use in commercial or permissioned environments. Computer companies like IBM and Microsoft, and many key players in different vertical industry segments have recognized the applicability of blockchains in environments other than cryptocurrencies. IBM did some pioneering work by architecting and implementing Fabric, and then open sourcing it. Now Fabric is being enhanced via the Hyperledger Consortium as part of the Linux Foundation. While there is no standard in the blockchain space currently, all the ongoing efforts involve some combination of database, transaction, encryption, consensus and other distributed systems technologies. Dr. Mohan will focus on how the functionality of traditional and modern data stores are being utilized or not utilized in the different blockchain projects. Since most of the blockchain efforts are still in a nascent state, he believes the time is right for database researchers and practitioners to get more deeply involved.
Views: 3912 CSE HKUST
Blockchain class4 jan4| Hash Function| Distributed Ledger తెలుగులో I 9985269518
Blockchain class4 jan4| Hash Function| Distributed Ledger తెలుగులో I 9985269518 #blockchainexplainedtelugu #blockchainhashfunctiontelugu #blockchaintutorialtelugu #BlockchainCourseContent https://www.vlrtraining.in/blockchain-online-training/ #Blockchaintrainingtelugu BLOCKCHAIN: Blockchain is a digital ledger in which transactions made in bitcoin or another cryptocurrency are recorded chronologically and publicly. HOW DOES BLOCKCHAIN EXACTLY WORKS: When a new transaction or an edit to an existing transaction comes in to a blockchain, generally a majority of the nodes within a blockchain implementation must execute algorithms to evaluate and verify the history of the individual blockchain block that is proposed. If a majority of the nodes come to a consensus that the history and signature is valid, the new block of transactions is accepted into the ledger and a new block is added to the chain of transactions. If a majority does not concede to the addition or modification of the ledger entry, it is denied and not added to the chain. WHAT IS THE HASH FUNCTION IN BLOCKCHAIN: A hash is a function that converts an input of letters and numbers into an encrypted output of a fixed length. A hash is created using an algorithm, and is essential to blockchain management in cryptocurrency. BLOCKCHAIN HASHING: In blockchain, hashes are used to represent the current state of the world, or to be more precise, the state of a blockchain. As such, the input represents everything that has happened on a blockchain, so every single transaction up to that point, combined with the new data that is being added. What this means is that the output is based on, and therefore shaped by, all previous transactions that have occurred on a blockchain. As mentioned, the slightest change to any part of the input results in a huge change to the output; in this lies the irrefutable security of blockchain technology. Changing any record that has previously happened on a blockchain would change all the hashes, making them false and obsolete. This becomes impossible when the transparent nature of blockchain is taken into account, as these changes would need to be done in plain sight of the whole network. WHAT IS SHA256: SHA-256 Cryptographic Hash Algorithm. A cryptographic hash (sometimes called 'digest') is a kind of 'signature' for a text or a data file. SHA-256 generates an almost-unique 256-bit (32-byte) signature for a text. WHAT IS PEER IN BLOCKCHAIN: A blockchain network is comprised primarily of a set of peer nodes (or, simply, peers). Peers are a fundamental element of the network because they host ledgers and smart contracts. Recall that a ledger immutably records all the transactions generated by smart contracts (or chaincode). WHAT IS UNCONFIRMED TRANSACTION IN BLOCKCHAIN: An unconfirmed transaction means that the transaction has not been included in a block and thus has not been completed. Most recipients require at least one confirmation to complete the transaction, including Wirex. ... The lower the blockchain fee, the lower your transaction's priority in the Bitcoin network. WHAT IS DISTRIBUTED BLOCKCHAIN: Blockchain is one type of a distributed ledger. Distributed ledgers use independent computers (referred to as nodes) to record, share and synchronize transactions in their respective electronic ledgers (instead of keeping data centralized as in a traditional ledger). Subscribe to our Channel https://goo.gl/G3cB5Q ********************************************************************* Mail us your requirements to [email protected] Contact us 9059868766 For more Details Click here http://www.vlrtraining.in/ ----------------------------------------------------------------------------------------- Like us on Facebook page VLR Training https://www.facebook.com/VLRtrainingHyderabad/ ----------------------------------------------------------------------------------------- Follow us on Twitter https://twitter.com/VlrTrainingKphb _
Views: 107 VLR Training
Ep12: Mance Harmon, Hashgraph and the Future of Distributed Ledgers
As always, visit https://consensusnetwork.io for more crypto content. There is more to blockchain than bitcoin. And there is more to distributed ledgers than blockchain. Blockchain describes only one type of decentralized consensus mechanism. Although it is really the dominant system in this new distributed world, it’s not the only one. I’m no computer scientist by any means and I suspect you aren’t either. But I will say that from what I have learned, the major challenges in using blockchain technology so far have been related to scaling. Blockchain is inherently slow. Bitcoin takes 10 minutes to reach consensus—hard to wait that long making a transaction at Starbucks. Lightening network will likely change that but those are the facts now. Ethereum is faster at 15 seconds per transaction. But where do we need to be in order to go prime time with cryptocurrency? Well, Visa does about 5000 transactions per second so let’s think of that as the gold standard for speed to incorporate something new into daily financial transactions. I’m not saying that you can’t get there with blockchain and sidechains, but as we say in the non-technical world. There is more than one way to skin a cat (don’t ask me why we say that). One project that got my attention a couple years ago was hashgraph. Hashgraph uses a completely different consensus mechanism with apparent lightening speed and asynchronous Byzantine fault tolerance—something that many computer scientists believe to be the gold standard for security in distributed systems. That in and of itself is exciting but and idea or white paper can only get you so far. As an investor, I always look at the team first. When you look at Hashgraph, you see one of the most impressive teams in all of the cryptocurrency projects out there. I had the pleasure of interviewing Mance Harmon, CEO of Hashgraph a few months ago before it’s presale and when we this week I will play it for you! This is a token you will see in circulation next year that you should keep an eye on.
Views: 104 CNTV
Blockchain tutorial 21: Peer-to-peer network, propagation and latency
This is part 21 of the Blockchain tutorial explaining what a peer-to-peer network is and what propagation and latency means. These words are often used in the Blockchain ecosystem and for non-technical people it may be helpful to understand the meaning of these words. In this video series different topics will be explained which will help you to understand blockchain. Bitcoin released as open source software in 2009 is a cryptocurrency invented by Satoshi Nakamoto (unidentified person or group of persons). After the introduction of Bitcoin many Bitcoin alternatives were created. These alternate cryptocurrencies are called Altcoins (Litecoin, Dodgecoin etc). Bitcoin's underlying technology is called Blockchain. The Blockchain is a distributed decentralized incorruptible database (ledger) that records blocks of digital information. Each block contains a timestamp and a link to a previous block. Soon people realises that there many other use cases where the Blockchain technology can be applied and not just as a cryptocurrency application. New Blockchain platforms were created based on the Blockchain technology, one of which is called Ethereum. Ethereum focuses on running programming code, called smart contracts, on any decentralized application. Using the new Blockchain platforms, Blockchain technology can be used in supply chain management, healthcare, real estate, identity management, voting, internet of things, etcetera, just to name a few. Today there is a growing interest in Blockchain not only in the financial sector but also in other sectors. Explaining how Blockchain works is not easy and for many the Blockchain technology remains an elusive concept. This video series tries to explain Blockchain to a large audience but from the bottom up. Keywords often used in Blockchain conversation will be explained. Each Blockchain video is short and to the point. It is recommended to watch each video sequentially as I may refer to certain Blockchain topics explained earlier. Mobilefish.com http://www.mobilefish.com Global Bitcoin Nodes Distribution https://bitnodes.21.co Check out all my other Blockchain tutorial videos https://goo.gl/aMTFHU Subscribe to my YouTube channel https://goo.gl/61NFzK The presentation used in this video tutorial can be found at: http://www.mobilefish.com/developer/blockchain/blockchain_quickguide_tutorial.html #mobilefish #blockchain #bitcoin #cryptocurrency #ethereum
Views: 8505 Mobilefish.com
What is DAG Technology? An Alternative Ledger System for Cryptocurrencies | Coinpickings Podcast #2
Find me on other socials! Steemit: https://steemit.com/@khaleelkazi Twitter: @coinpickings DAG – An Alternative Ledger System for Cryptocurrencies Blockchain-free cryptocurrencies are those that use alternative systems in order to function similarly to cryptocurrencies that utilize blockchain technology. DAG stands for Directed Acyclic Graph and can serve as a viable alternative to blockchain technology as shown in cryptocurrencies such as DagCoin, ByteBall, and IOTA. In a DAG system, there are no miners and there are no blocks, users confirm each other’s transactions via a process that confirms previous transactions with each new transaction. Because there are no blocks, there is no blocksize issue and therefore, the block scaling debate seen in currencies such as Bitcoin does not exist. References: (1) https://dagcoin.org (2) http://iota.org/ (3) https://byteball.org/ Tags: DAG, byteball, iota, dagcoin, directed acyclic graph, blockchain, bitcoin, cryptocurrencies, cryptocurrency, crypto, graph, directed, acrylic, what is dag, what are dags, how does iota work, tangle, how does tangle work, how does tangle ledger work, transaction confirmations in dag, how do transactions work in dag, who mines blocks in dag, is dag proof of stake, what consensus algorithm does dag use, ethereum, what is iota
Views: 9493 Coinpickings
DLT Solutions for Clients with Accenture and Digital Asset
Accenture and Digital Asset have teamed up to make Blockchain-based distributed ledger technology a reality for institutions like the Australian Stock Exchange.
Views: 6664 Accenture
GOTO 2017 • Building a Serverless Distributed Ledger with FaunaDB • Chris Anderson
This presentation was recorded at GOTO Berlin 2017 http://gotober.com Chris Anderson - Director of Developer Experience at Fauna ABSTRACT As the blockchain hype passes, one standout use-case with lasting interest is the distributed ledger. A distributed ledger allows participants at different sites to maintain shared transaction logs. Enterprises are exploring non-blockchain implementations of distributed ledgers, while at the same time embracing the serverless paradigm. In this talk we’ll explore a ledger implementation [...] Download slides and read the full abstract here: https://gotober.com/2017/sessions/335 https://twitter.com/gotober https://www.facebook.com/GOTOConference http://gotocon.com
Views: 2133 GOTO Conferences
New Era in Distributed Computing with Blockchains and Databases
A new era is emerging in the world of distributed computing with the growing popularity of blockchains (shared, replicated and distributed ledgers) and the associated databases as a way of integrating inter-organizational work. Originally, the concept of a distributed ledger was invented as the underlying technology of the cryptocurrency Bitcoin. But the adoption and further adaptation of it for use in the commercial or permissioned environments is what is of utmost interest to me and hence will be the focus of this keynote. Computer companies like IBM and Microsoft, and many key players in different vertical industry segments have recognized the applicability of blockchains in environments other than cryptocurrencies. IBM did some pioneering work by architecting and implementing Fabric, and then open sourcing it. Now Fabric is being enhanced via the Hyperledger Consortium as part of The Linux Foundation. A few of the other efforts include Enterprise Ethereum, R3 Corda and BigchainDB. While there is no standard in the blockchain space currently, all the ongoing efforts involve some combination of database, transaction, encryption, consensus and other distributed systems technologies. Some of the application areas in which blockchain pilots are being carried out are: smart contracts, supply chain management, know your customer, derivatives processing and provenance management. In this talk, I will survey some of the ongoing blockchain projects with respect to their architectures in general and their approaches to some specific technical areas. I will focus on how the functionality of traditional and modern data stores are being utilized or not utilized in the different blockchain projects. I will also distinguish how traditional distributed database management systems have handled replication and how blockchain systems do it. Since most of the blockchain efforts are still in a nascent state, the time is right for database and other distributed systems researchers and practitioners to get more deeply involved to focus on the numerous open problems. Speaker Bio Dr. C. Mohan has been an IBM researcher for 35 years in the database area, impacting numerous IBM and non-IBM products, the research and academic communities, and standards, especially with his invention of the ARIES family of database locking and recovery algorithms, and the Presumed Abort commit protocol. This IBM (1997), and ACM/IEEE (2002) Fellow has also served as the IBM India Chief Scientist for 3 years (2006-2009). In addition to receiving the ACM SIGMOD Innovation Award (1996), the VLDB 10 Year Best Paper Award (1999) and numerous IBM awards, Mohan was elected to the US and Indian National Academies of Engineering (2009), and was named an IBM Master Inventor (1997). This Distinguished Alumnus of IIT Madras (1977) received his PhD at the University of Texas at Austin (1981). He is an inventor of 50 patents. He is currently focused on Blockchain, Big Data and HTAP technologies (http://bit.ly/CMbcDB, http://bit.ly/CMgMDS). Since 2016, he has been a Distinguished Visiting Professor of China’s prestigious Tsinghua University. He has served on the advisory board of IEEE Spectrum, and on numerous conference and journal boards. Mohan is a frequent speaker in North America, Europe and India, and has given talks in 40 countries. He is very active on social media and has a huge network of followers. More information could be found in the Wikipedia page at http://bit.ly/CMwIkP
27. Is Hashgraph Going to Disrupt the Blockchain? Interviews on Distributed Ledger Technology
We got your DLT right here. Just when we were starting to finally understand the blockchain, along comes Hashgaph. Just like the Blockchain, Hashgraph is is a Distributed Ledger Technology. In the first portion of episode 27, we get the download on Hashgraph. And then a use case, Intiva Health, providing doctor credentialing tools on Hashgraph. http://hashgraph.com http://intivahealth.com http://coloringcrypto.com/sponsors   Guests: Paul Madsen with Swirlds, creator of Hashgraph John Hartigan with Intiva Health, one of the first companies to implement on Hashgraph Gabe: What is Hashgraph? Paul: So what we're trying to do is the same as what blockchain does, or aspires to do, and that is to allow some set of people on a  network or computers, or on nodes in general, to come to an agreement or come to consensus on the state of some set of transactions. Gabe: The proof of work model that most of the blockchain runs on, or even proof of stake, the problem is that it's just really slow.  And so clearly if you guys have something much faster, that's going to be welcomed.  Paul: Yeah, I think so, but you know to be fair to Bitcoin and Ethereum, they've got proposals by which they argue that they're going to address some of the scaling challenges.   Both communities have mechanisms that they believe will increase those numbers, and that's great. We still believe that the sort of throughput that we can provide and in our tests validate that is orders of magnitude larger.  More important than those quantitative differences is is the qualitative differences between the nature of our consensus and that of a blockchain so specifically we are Byzantine Fault Tolerant right which means that the consensus we deliver or our protocol delivers. Gabe:  Could you describe the Byzantine issue and  how that relates to Hashgraph? Paul:  Sure, so Byzantine, in the context of consensus algorithms is a reference to a thought problem posed by some computer scientists thirty years ago.  They presented the problem  of distributed consensus that we're all concerned with now in the context of a bunch of generals with  armies encamped around a particular city that they are trying to attack. The challenge for those  generals. Is that they all need to do the same thing so that the numbers are such that if they all attack they're going to swamp The Defenders, and win the battle, but if only half of them attack then the  defenders behind their walls are going to have the advantage so that the critical decision for those generals, you know separated by a couple of miles or across the battlefield of Uncertain terrain where any messengers that they might send between themselves might be captured or killed or defect the challenge for those generals is how do we come to a decision either attack or retreat in the face of? Uncertain messaging, uncertain loyalties how do we make the right decision? How do we come to a consensus decision to attack or retreat in the face of all these difficulties. So  that's the reference to Byzantine right because for whatever reason these computer scientists presented . It is Byzantine generals,  Gabe: So these Generals are isolated and all the actors have to decide to do the same thing. Paul: Exactly. That's the challenge right. A community trying to  collaboratively make a decision to go or no-go. Byzantine has kind of morphed into meaning evil or malicious. So a consensus algorithm if you want to make a public platform out of it, you have to anticipate that some of your nodes, some of the participants, will be malicious. They'll be evil, they'll be Byzantine, and and so that's one metric by which we can measure a consensus algorithm. How well does it do against Byzantine actors who are actively trying to subvert the consensus, stopping consensus or skew it to their benefit? The archetypical example for crypto currencies is a double spend where I'm a bad guy, and I send you five coins. I've only got six. I send you five and then I immediately send five to somebody else.  So all of that to set the context that Byzantine is bad & Byzantine Fault Tolerance with respect to a consensus algorithm means something a little bit more specific. It means in a broad sense that you can deal with bad actors. And you know mathematically it's provable that no consensus algorithm can deal with more than 1/3 bad actors if you've got thirty-four percent of the community and they're bad, and you control them then you're in charge. That's just the reality of dealing with these constraints of these circumstances, but that the other kiosk  Gabe: Everything in this space has to deal with that, bitcoin, the blockchain... Paul:  Indeed and you know that the Bitcoin communities and the blockchain communities they talk about a 51% attack, and and yes, they have that attack, but they also...
Views: 143 Coloring Crypto
Devoxx Poland 2016 - Mark van Cuijk - Blockchain and distributed ledgers for developers
You must have heard about Bitcoin. Publicly launched in 2009, it obtained massive public media attention a couple of years later. Besides a digital currency, the major innovation of Bitcoin is the blockchain, also known as a distributed ledger, a technology that uses cryptography to allow some systems that could only be modelled in a client-server fashion before to be modelled in a peer-to-peer fashion. Blockchain technology can be very useful outside the realm of digital currencies and finance, for example in the energy market, car maintenance history or international trade. With my three years of experience with blockchains, I’m going to make sure there are a couple of takeaways for you in this presentation. You'll learn how blockchains works and see examples of blockchains in Java. You'll see how blockchain fits in a larger architecture, putting it in context with concepts like journals, event sourcing, CQRS. Finally, you will discover how to determine whether a blockchain may be appropriate for your project.
Views: 1116 Devoxx Poland
Centralised vs Decentralised vs Distributed Systems [Blockchain & Cryptocurrency]
Full Course On Udemy Discounted Coupon 95% OFF - https://www.udemy.com/bitcoin-ethereum-blockchain/?couponCode=YOUTUBE Like our content and want to support us more directly? Help Us, Help You! https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=6DF2Q8TR5FB3E Udemy Coupons "Here are coupons for all of my udemy courses: -Three.js [50% OFF] - https://www.udemy.com/threejs-programming/?couponCode=10ONLY -Flappy Bird SFML Clone [50% OFF] - https://www.udemy.com/flappy-bird-sfml/?couponCode=50-OFF -HTML [50% OFF] - https://www.udemy.com/html-tutorials/?couponCode=50_P_OFF -CSS [50% OFF] - https://www.udemy.com/css-course/?couponCode=CSS50POFF -Tic-Tac-Toe Cocos2d-x [50% OFF] - https://www.udemy.com/tic-tac-toe-cocos2d-x-cpp/?couponCode=TTTCC2D-50OFF -Tic-Tac-Toe SFML [50% OFF] - https://www.udemy.com/tic-tac-toe-sfml/?couponCode=SFMLTTT-50OFF -Cocos2d-x Game Development [90% OFF] - https://www.udemy.com/cocos2d-x-v3-cpp/?couponCode=90-PERCENT-OFF -A-Frame WebVR (Virtual Reality) [75% OFF] - https://www.udemy.com/a-frame-webvr/?couponCode=75_PERCENT_OFF -Modern OpenGL [80% OFF] - https://www.udemy.com/opengl-tutorials/?couponCode=10GLCODE -Bootstrap 4 [80% OFF] - https://www.udemy.com/bootstrap-web/?couponCode=80-OFF -C++ Programming [90% OFF] - https://www.udemy.com/cpp-course/?couponCode=BIG_SAVING_CPP -Ionic AngularJS [75% OFF] - https://www.udemy.com/ionic-course/?couponCode=75_OFF -Swift Programming [87.5% OFF] - https://www.udemy.com/swift-ios-mac/?couponCode=DISCOUNT_10 For all new courses feel free to ask for a coupon, enjoy. If you like this stuff, as always, show the love through comments, likes, favorites, subscriptions, etc. Thousands of free videos at www.sonarlearning.co.uk If you have any questions feel free to post them at http://www.sonarlearning.co.uk/questions.php Our Website http://www.sonarsystems.co.uk/ Facebook - https://www.facebook.com/pages/Sonar-Systems/581403125243822 Twitter - https://twitter.com/SonarSystems Google+ - https://plus.google.com/+SonarsystemsCoUk/ Donate - https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=6DF2Q8TR5FB3E Our games made using Cocos2d-x ------------------------------------------------------ iOS: https://itunes.apple.com/us/artist/sonar-systems/id672545941 Google Play: https://play.google.com/store/apps/developer?id=Sonar+Systems Check out our Cocos2d-x book to learn how to make games https://www.packtpub.com/game-development/cocos2d-x-game-development-essentials
Views: 3913 Sonar Systems
TechTalks: DLT & Blockchain
At Gilbert + Tobin, our team looks at technology influences as they apply to all industries. For more information: https://www.gtlaw.com.au/digital-domain
Views: 190 Gilbert + Tobin
What is Hashgraph and how will it replace The Blockchain!?
What is Hashgraph?, Homework: __________________________________ Swirlds: http://www.swirlds.com Hashgraph: http://hashgraph.com Sammantics' More Detailed But Understandable Hashgraph Blog: http://sammantics.com/blog/2016/7/27/hashgraph-consensus Whitepapers:http://www.swirlds.com/whitepapers/ SDK Download: http://www.swirlds.com/download/ Hashgraph Youtube: https://www.youtube.com/channel/UCIhE4NYpaX9E9SssFnwrjww Join the Telegram group to ask questions and stay updated: https://t.me/hashgraph BLOGS _______________________________ "Swirlds Raises $3M Seed Round to ..." - http://www.the-blockchain.com/2017/09/17/swirlds-raises-3m-seed-round-bring-improved-performance-security-distributed-ledger-applications/ "Swirlds Seeks End to Financial Attacks..." - https://www.securitynow.com/author.asp?section_id=654&doc_id=736392 "Distributed ledger start-up catches eye of credit unions..." - http://www.zdnet.com/article/distributed-ledger-start-up-catches-eye-of-credit-unions-closes-3-million-seed-round/ -----------💎💎 -💎💎-💎 --- SOCIAL MEDIA --- 💎-💎💎 -💎💎 ---------- Website: https://www.londonstax.com Facebook: https://www.facebook.com/londin.stax.3 Twitter : @LondonStaxUK Instagram: @LondonStax -----------💎💎 -💎💎-💎 --- MINE BITCOIN --- 💎-💎💎 -💎💎---------- To get 3% off of your mining contract @ https://www.genesis-mining.com/ please use my code: kOU3Jm -----------💎💎 -💎💎-💎 --- BUY BITCOIN --- 💎-💎💎 -💎💎---------- BUY BTC/LTC/ETH @ Coinbase, here: https://www.coinbase.com/join/591f85c... - Using this link we both get an extra $10 worth of BTC -----------💎💎 -💎💎-💎 --- DONATIONS WELCOME! --- 💎-💎💎 -💎💎---------- ETH/ERC20 TOKENS - 0x6A16A59982b7ca1A7ED267bEcF9199302691a3e0 LISK - 17262468032063061580L BRO - BcTzcdX7ZegXNG7Xq61FfYjNK1Swgm5R19 BTC - 3HLW4ygc8hqrhpo7JsFDesxY7nPAmp8B9e LTC - LhbDbP4pu7bNVHLyVkB23tGd9ng34YeKaH STRAT - ScpLFVBAMfLUQojtH3FQC1GoSjkny4d32d
Views: 109952 London Stax
Bitcoin Q&A: Distributed ledgers, identity, and microlending
Sierra Leone announced that they would use distributed ledger technology in partnership with the United Nations and Kiva.org (using Hyperledger), for the purpose of microlending. Does this system make sense? How does the power of the crowd help risk in these lending scenarios, and remove the need for identity? This question is from the February monthly subscriber session, which took place on February 23rd 2019. If you want early-access to talks and a chance to participate in the monthly live Q&As with Andreas, become a patron: https://www.patreon.com/aantonop RELATED: What is Consensus: Rules without Rulers - https://youtu.be/2tqo7PX5Pyc Bitcoin Security: Bubble Boy and the Sewer Rat - https://youtu.be/810aKcfM__Q Bitcoin, A New Species of Money: An Evolutionary Perspective on Currency - https://youtu.be/G-25w7Zh8zk Measuring Success: Price or Principle - https://youtu.be/mPMsbgWl9p4 Why Open Blockchains Matter - https://youtu.be/uZPIz3ArQww Decentralised Globalisation - https://youtu.be/QoiR4aNbTOw Investing in Education instead of Speculation - https://youtu.be/6uXAbJQoZlE Beyond Price: Bitcoin's Impact on the Future - https://youtu.be/rvwVbRQ5Ysc How does the Blockstream satellite work? - https://youtu.be/C1GxxlqRkKQ Regulation and the bank boycott - https://youtu.be/8ypH69Cb1l0 Remittances and smuggling in Venezuela - https://youtu.be/RRXecXfWARw Bitcoin as everyday currency - https://youtu.be/xYvvSV4mjH0 What is the appeal of sound money? - https://youtu.be/tfba4FFErrQ Hyperbitcoinization - https://youtu.be/AB5MU5fXKfo Why permissioned blockchains fail - https://youtu.be/GEQzlJ_WL-E Protocol development security - https://youtu.be/4fsL5XWsTJ4 How to avoid re-creating systems of control - https://youtu.be/EfoGnDoaBL8 Wallets, nodes, and monetary sovereignty - https://youtu.be/8Hb3tUn8s4E Is bitcoin testing governments? - https://youtu.be/UfRGo2LAIpo Will governments let privacy coins exist? - https://youtu.be/30sjEW70rLE Geopolitics and state-sponsored attacks - https://youtu.be/htxPRTJLK-k Governance and social attack immunity - https://youtu.be/PjOHatoX6Fk Sanctions and censorship resistance - https://youtu.be/DeXe5eGRl7E State-sponsored digital currencies and trust minimization - https://youtu.be/dSpFbg7jlDw Taxation and failed societies - https://youtu.be/xspdlOtBjcE Andreas M. Antonopoulos is a technologist and serial entrepreneur who has become one of the most well-known and respected figures in bitcoin. Follow on Twitter: @aantonop https://twitter.com/aantonop Website: https://antonopoulos.com/ He is the author of two books: “Mastering Bitcoin,” published by O’Reilly Media and considered the best technical guide to bitcoin; “The Internet of Money,” a book about why bitcoin matters. Subscribe to the channel to learn more about Bitcoin & open blockchains; click on the red bell to enable notifications about new videos! MASTERING BITCOIN, 2nd Edition: https://amzn.to/2xcdsY9 Translations of MASTERING BITCOIN: https://bitcoinbook.info/translations-of-mastering-bitcoin/ THE INTERNET OF MONEY, v1: https://amzn.to/2ykmXFs THE INTERNET OF MONEY, v2: https://amzn.to/2IIG5BJ Translations of THE INTERNET OF MONEY: Spanish, 'Internet del Dinero' (v1) - https://amzn.to/2yoaTTq French, 'L'internet de l'argent' (v1) - https://www.amazon.fr/Linternet-largent-Andreas-M-Antonopoulos/dp/2856083390 Russian, 'Интернет денег' (v1) - https://www.olbuss.ru/catalog/ekonomika-i-biznes/korporativnye-finansy-bankovskoe-delo/internet-deneg Vietnamese, 'Internet Của Tiền Tệ' (v1) - https://alphabooks.vn/khi-tien-len-mang MASTERING ETHEREUM (Q4): https://amzn.to/2xdxmlK Music: "Unbounded" by Orfan (https://www.facebook.com/Orfan/) Outro Graphics: Phneep (http://www.phneep.com/) Outro Art: Rock Barcellos (http://www.rockincomics.com.br/)
Views: 4908 aantonop