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This repository was archived by the owner on Jan 22, 2020. It is now read-only.
- [Hyperledger Blockchains: Permissioned or Permissionless?](#hyperledger-blockchains-permissioned-or-permissionless)
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- [Advantages of Using a Permissioned Blockchain over a Permissionless Blockchain](#advantages-of-using-a-permissioned-blockchain-over-a-permissionless-blockchain)
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- [Hyperledger vs. Other Permissioned Ledgers (Brian Behlendorf)](#hyperledger-vs-other-permissioned-ledgers-brian-behlendorf)
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- [Video: Hyperledger vs. Other Permissioned Ledgers (Brian Behlendorf)](#video-hyperledger-vs-other-permissioned-ledgers-brian-behlendorf)
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-[Other Open Source Permissioned Distributed Ledgers](#other-open-source-permissioned-distributed-ledgers)
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According to [AngelList](https://angel.co/blockchains), more than one thousand startups have been created to leverage Bitcoin and blockchain-related technologies since the inception of the Bitcoin payment system. Hundreds of large companies, and dozens of governments and universities have become actively involved in researching, testing, and prototyping blockchain protocols, platforms, and applications. In particular, the financial services sector has been actively investing in exploring wider applications of distributed ledger technologies (of which, blockchain is a subset) since late 2015.
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## Bitcoin and Ethereum (Robert Schwentker)
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## Video: Bitcoin and Ethereum (Robert Schwentker)
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[](https://youtu.be/6AulVTv2hlo)
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@@ -293,7 +293,7 @@ As of October 2017, Ethereum had a [market cap](https://coinmarketcap.com/curren
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As the second best known public blockchain after the Bitcoin blockchain, Ethereum has ushered in an era of unprecedented activity around blockchain and distributed ledger technology.
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Let's start by examining the Bitcoin and Ethereum blockchains, both of which are permissionless, public blockchains. We will examine several large transactions, and the genesis block for each blockchain. We will look at block heights, transaction times, mining pools, timestamps, and block rewards.
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## Exploring Bitcoin and Ethereum Blockchains
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## Video: Exploring Bitcoin and Ethereum Blockchains
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[](https://youtu.be/v6FY9jqj3XE)
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## 'Certifying' a Document
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We have just examined the Bitcoin and Ethereum blockchains, and the key variables to pay attention to. Next, let's examine how we can 'certify' a document on both the Bitcoin and Ethereum blockchains simultaneously, using Stamp.io, which is a certification tool. We will show you how to easily certify various types of files on Stamp.io, obtaining a 'Stampery Certificate'. We will also show you how to cross-check the hash of the transactions on the Bitcoin and the Ethereum blockchains.
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## 'Certifying' a Document onto Blockchains Using stamp.io
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## Video: 'Certifying' a Document onto Blockchains Using stamp.io
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[](https://youtu.be/GkmHnc-5OyY)
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@@ -400,7 +400,7 @@ The following table offers an at-a-glance view of the main considerations and pr
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Hyperledger is an open source effort created to advance cross-industry blockchain technologies. Hosted by The Linux Foundation, it is a global collaboration of members from various industries and organizations. Hyperledger boasts a host of enterprise-ready solutions. Hyperledger is about communities of software developers building blockchain frameworks and platforms. We will take a closer look at some of the current Hyperledger projects in the coming chapters.
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Hyperledger reduces these security risks and ensures that only the parties that want to transact are the ones that are part of the transaction and, rather than displaying the record of the transactions to the whole network, they remain visible only to the parties involved. So, Hyperledger provides all the capabilities of the blockchain architecture - data privacy, information sharing, immutability, with a full stack of security protocols - all for the enterprise.
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## Hyperledger vs. Other Permissioned Ledgers (Brian Behlendorf)
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## Video: Hyperledger vs. Other Permissioned Ledgers (Brian Behlendorf)
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[](https://youtu.be/GQJDsEd8DcU)
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# Other Open Source Permissioned Distributed Ledgers
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## Other Distributed Ledger Technologies (Robert Schwentker)
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## Video: Other Distributed Ledger Technologies (Robert Schwentker)
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