Blocknotary Deck
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Blocknotary is a service that timestamps media files in the blockchain to prove their existence and integrity. It stores over 75 million transactions in the blockchain and has timestamped over 106,000 transactions using the OP_RETURN protocol. It competes with other proof of existence services both for web and mobile. Blocknotary works with popular apps like Google Photos, Dropbox, Apple Camera and Notes to timestamp photos and files from use cases like insurance claims, inspections, and verbal contracts on mobile devices.
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Table1
Several major bitcoin exchanges and services were hacked between 2013 and 2016, resulting in the theft of millions of dollars worth of bitcoin. The largest hack was of Mt. Gox in 2014 which lost 850,000 bitcoin valued at $700 million at the time. Other significant hacks included Silk Road 2.0 losing 4,476 bitcoin in 2014, Bitstamp losing 19,000 bitcoin in 2015, and Bitfinex losing 119,756 bitcoin in 2016. Many of the hacked services shut down or had to rebuild their platforms after the security breaches.
Blockchain Now
Search engine and analytics on top of the bitcoin blockchain. Course project @Insight Data Engineering.
BrodTech 2021: Blockchain | Mak Muftić (ChainSafe)
- The document discusses the history and evolution of blockchain technology from its origins with Bitcoin and Ethereum to current applications in decentralized finance (DeFi) and non-fungible tokens (NFTs).
- It notes that total value locked in DeFi projects has grown from $5.3 billion in June 2019 to over $86 billion in September 2021.
- NFT trading volume in the last 30 days has surpassed $2 billion, demonstrating significant growth and interest in this application of blockchain.
Bitcoin & Ethereum Address
The document discusses Bitcoin and Ethereum addresses. It explains how Bitcoin addresses are generated from private keys using SHA-256 hashing and how Ethereum addresses are generated from private keys using elliptic curve cryptography. It also discusses potential attacks on addresses generated from weak brain wallets or passwords that could be cracked using brute force methods or future quantum computers.
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Demonstrating how to create an end-to-end Web-based application that uses blockchain for user authentication, read, and write access to the data stored on the blockchain
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Table1
Several major bitcoin exchanges and services were hacked between 2013 and 2016, resulting in the theft of millions of dollars worth of bitcoin. The largest hack was of Mt. Gox in 2014 which lost 850,000 bitcoin valued at $700 million at the time. Other significant hacks included Silk Road 2.0 losing 4,476 bitcoin in 2014, Bitstamp losing 19,000 bitcoin in 2015, and Bitfinex losing 119,756 bitcoin in 2016. Many of the hacked services shut down or had to rebuild their platforms after the security breaches.
Blockchain Now
Search engine and analytics on top of the bitcoin blockchain. Course project @Insight Data Engineering.
BrodTech 2021: Blockchain | Mak Muftić (ChainSafe)
- The document discusses the history and evolution of blockchain technology from its origins with Bitcoin and Ethereum to current applications in decentralized finance (DeFi) and non-fungible tokens (NFTs).
- It notes that total value locked in DeFi projects has grown from $5.3 billion in June 2019 to over $86 billion in September 2021.
- NFT trading volume in the last 30 days has surpassed $2 billion, demonstrating significant growth and interest in this application of blockchain.
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The document discusses Bitcoin and Ethereum addresses. It explains how Bitcoin addresses are generated from private keys using SHA-256 hashing and how Ethereum addresses are generated from private keys using elliptic curve cryptography. It also discusses potential attacks on addresses generated from weak brain wallets or passwords that could be cracked using brute force methods or future quantum computers.
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Bitcoin is a decentralized digital currency that uses cryptography to secure and verify transactions. It maintains a public ledger called the blockchain to record all transactions made in bitcoin. The total supply of bitcoin is fixed at 21 million, and each bitcoin can be divided into 100 million smaller units called satoshis. Users can obtain bitcoin by purchasing it, mining it, or trading other currencies for it. The value of bitcoin has fluctuated greatly since its inception in 2009, when it was worth $0.08, reaching over $8,000 in early 2018.
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Fork your mother if you want fork: A short history of Bitcoin scaling wars
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how to use the blockchain
Blockchain Definition: A blockchain is an immutable, shared ledger that facilitates the process of recording transactions and tracking assets across an enterprise network. ... A blockchain network can track orders, payments, bills, production and more.
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Blockchain
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Trent McConaghy- BigchainDB
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Bit coin fiat_barcampbangalore BCB11 Feb 2011
Bitcoin is a digital currency powered by a peer-to-peer network used for internet transactions. It features anonymity like cash without central control or inflation. Bitcoins are transferred between addresses by generating digital signatures to link transactions in a publicly distributed blockchain database. Miners generate blocks to record transactions and are awarded new bitcoins as compensation. The identity of Bitcoin's creator, Satoshi Nakamoto, remains unknown.
Rindi - Health 2.0 Blockchains Introduction Presentation
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"You’ve heard of blockchain, you nod sagely when someone tells you about bitcoin, but be honest — you’re one of the 99.9% who really doesn’t understand it! This workshop is for you. Blockchain expert Caterina Rindi gives you a nuts and bolts explanation of blockchain and bitcoin; what they are, where they came from, and why they matter for health care. This will include some hands-on practice where you actually set up your own bitcoin wallets, so bring a phone or laptop."
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Bitcoin – A decade of promising growth!
Bitcoin, based on the now-famous Blockchain technology, is getting a lot of attention in popular media lately. And rightly so!
Bitcoin was first conceptualised way back in 2007 by Satoshi Nakamoto, and the first whitepaper on Bitcoin was published in the following year. This solved the problem of double spending and duplicate currency. In 2009, the Genesis Block was mined. Ever since, the Bitcoin story has only got bigger, and interesting!
Lets’ revisit the Bitcoin growth from the start in 2007 to 2017 – a decade of changes. From the initial stages to the current Bitcoin exchange rate of INR 80, 456.71 in 2017, the currency is here to stay!
blockchain technology
Blockchain technology was introduced in 2008 with the creation of Bitcoin. It uses a distributed ledger of encrypted blocks of data that grows over time as new blocks are added. Each block contains a cryptographic hash of the previous block, linking them together in a verifiable chain. This allows participants to reach consensus on a single record of data without a centralized authority. Blockchains are write-once and transparent, enabling applications like direct cryptocurrency transfers and timestamping of documents with witnesses across the network. However, challenges remain around energy use, scalability, regulation, and individual responsibility.
Bitcoin-for-Beginners- the history of cryptocurrencies.
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[WSO2 Integration Summit San Francisco 2019] Internet Payment Protocols and t...
One of the most disruptive technologies to arise in this generation of open source has been the advent of blockchain-based cryptographic assets. The killer application of this is payment systems, and every meaningful messenger and soon every bank will be implementing payments based on blockchain. With the advent of payment moving in-band, the implications for the API economy become a world of programmable services that can manage their own profit and loss and even source their own infrastructure. The implications for Enterprises is substantial.
Proof of Phone KYC Oracle
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Turkish Airlines and Mobilender are not described in the document. OpenBazaar is mentioned but no details are provided about its use of BlockNotary Interview.
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This document discusses cryptocurrency and provides an overview of Bitcoin. It defines cryptocurrency as a digital currency secured through cryptography that allows for peer-to-peer transactions without an intermediary. The document outlines the risks of cryptocurrency including hackers, lack of protections, costs, and scams. It also describes how Bitcoin works, including how the blockchain records transactions in blocks to form a public ledger. Mining is explained as the process of adding new transaction records to the blockchain by solving complex math problems.
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Bitcoin Status Report - On-Chain Scaling Aug 2016
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how to use the blockchain
Blockchain Definition: A blockchain is an immutable, shared ledger that facilitates the process of recording transactions and tracking assets across an enterprise network. ... A blockchain network can track orders, payments, bills, production and more.
Blockchain and Trade Finance
This document provides an overview of bitcoin, blockchains and their potential implications. It begins with background on distributed ledgers and cryptocurrencies like bitcoin. It then explains how technologies like blockchains work through the use of cryptography, tokens, and verification across distributed networks. Finally, it discusses how these technologies could disrupt traditional business models and provides further reading on applications in Sweden and internationally.
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The presentation is about blockchain technology.It will give the basic idea about blockchain and about it's application,i.e where we can use blockchain technology.
Jeudi Blockchain #4
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Bitcoin is a digital currency powered by a peer-to-peer network used for internet transactions. It features anonymity like cash without central control or inflation. Bitcoins are transferred between addresses by generating digital signatures to link transactions in a publicly distributed blockchain database. Miners generate blocks to record transactions and are awarded new bitcoins as compensation. The identity of Bitcoin's creator, Satoshi Nakamoto, remains unknown.
Rindi - Health 2.0 Blockchains Introduction Presentation
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"You’ve heard of blockchain, you nod sagely when someone tells you about bitcoin, but be honest — you’re one of the 99.9% who really doesn’t understand it! This workshop is for you. Blockchain expert Caterina Rindi gives you a nuts and bolts explanation of blockchain and bitcoin; what they are, where they came from, and why they matter for health care. This will include some hands-on practice where you actually set up your own bitcoin wallets, so bring a phone or laptop."
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Bitcoin, based on the now-famous Blockchain technology, is getting a lot of attention in popular media lately. And rightly so!
Bitcoin was first conceptualised way back in 2007 by Satoshi Nakamoto, and the first whitepaper on Bitcoin was published in the following year. This solved the problem of double spending and duplicate currency. In 2009, the Genesis Block was mined. Ever since, the Bitcoin story has only got bigger, and interesting!
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Fork your mother if you want fork: A short history of Bitcoin scaling wars
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Part 2: http://www.slideshare.net/Blockstrap/02-blockchains-101
Part 3: http://www.slideshare.net/Blockstrap/03-transactions-101
Part 4: http://www.slideshare.net/Blockstrap/cbgtbt-part-4-mining
Part 5: http://www.slideshare.net/Blockstrap/05-blockchains-102
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Part 1: http://www.slideshare.net/Blockstrap/cbgtbt-part-1-workshop-introduction-primer
Part 2: http://www.slideshare.net/Blockstrap/02-blockchains-101
Part 3: http://www.slideshare.net/Blockstrap/03-transactions-101
Part 4: http://www.slideshare.net/Blockstrap/cbgtbt-part-4-mining
Part 5: http://www.slideshare.net/Blockstrap/05-blockchains-102
Part 6: http://www.slideshare.net/Blockstrap/06-transactions-102
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Part 1: http://www.slideshare.net/Blockstrap/cbgtbt-part-1-workshop-introduction-primer
Part 2: http://www.slideshare.net/Blockstrap/02-blockchains-101
Part 3: http://www.slideshare.net/Blockstrap/03-transactions-101
Part 4: http://www.slideshare.net/Blockstrap/cbgtbt-part-4-mining
Part 5: http://www.slideshare.net/Blockstrap/05-blockchains-102
Part 6: http://www.slideshare.net/Blockstrap/06-transactions-102
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https://www.oeconsulting.com.sg/training-presentations]
This PowerPoint compilation offers a comprehensive overview of 20 leading innovation management frameworks and methodologies, selected for their broad applicability across various industries and organizational contexts. These frameworks are valuable resources for a wide range of users, including business professionals, educators, and consultants.
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Blocknotary Deck
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- 3. Numbers
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- 9. Use cases
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