January 6, 2020
Contents ... Intro: The Day Cryptography Changed Forever Part I: How David Chaum’s eCash Spawned a Cypherpunk Dream Part II: Hashcash or How Adam Back Designed Bitcoin’s Motor Block Part III: If Bitcoin Had a First Draft, Wei Dai’s B-Money Was It Part IV: With Bit Gold, Szabo Was Inches Away From Inventing Bitcoin Part V: How Hal Finney’s Quest For Digital Cash Led To RPOW (And More) This article by Steven Ellis was published in his Medium blog.
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April 24, 2018
Contents ... Intro: The Day Cryptography Changed Forever Part I: How David Chaum’s eCash Spawned a Cypherpunk Dream Part II: Hashcash or How Adam Back Designed Bitcoin’s Motor Block Part III: If Bitcoin Had a First Draft, Wei Dai’s B-Money Was It Part IV: With Bit Gold, Szabo Was Inches Away From Inventing Bitcoin Part V: How Hal Finney’s Quest For Digital Cash Led To RPOW (And More) Bitcoin and other cryptocurrencies can trace their roots to this earlier, privacy-focussed payment system for the internet.
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June 4, 2018
Contents ... Intro: The Day Cryptography Changed Forever Part I: How David Chaum’s eCash Spawned a Cypherpunk Dream Part II: Hashcash or How Adam Back Designed Bitcoin’s Motor Block Part III: If Bitcoin Had a First Draft, Wei Dai’s B-Money Was It Part IV: With Bit Gold, Szabo Was Inches Away From Inventing Bitcoin Part V: How Hal Finney’s Quest For Digital Cash Led To RPOW (And More) A look at how the technology underlying Hashcash — proof of work — would shape research into digital money for more than a decade to come.
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June 14, 2018
Contents ... Intro: The Day Cryptography Changed Forever Part I: How David Chaum’s eCash Spawned a Cypherpunk Dream Part II: Hashcash or How Adam Back Designed Bitcoin’s Motor Block Part III: If Bitcoin Had a First Draft, Wei Dai’s B-Money Was It Part IV: With Bit Gold, Szabo Was Inches Away From Inventing Bitcoin Part V: How Hal Finney’s Quest For Digital Cash Led To RPOW (And More) This article by Aaron van Wirdum was published in Bitcoin Magazine.
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July 12, 2018
Contents ... Intro: The Day Cryptography Changed Forever Part I: How David Chaum’s eCash Spawned a Cypherpunk Dream Part II: Hashcash or How Adam Back Designed Bitcoin’s Motor Block Part III: If Bitcoin Had a First Draft, Wei Dai’s B-Money Was It Part IV: With Bit Gold, Szabo Was Inches Away From Inventing Bitcoin Part V: How Hal Finney’s Quest For Digital Cash Led To RPOW (And More) This article by Aaron van Wirdum was published in Bitcoin Magazine.
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August 28, 2018
Contents ... Intro: The Day Cryptography Changed Forever Part I: How David Chaum’s eCash Spawned a Cypherpunk Dream Part II: Hashcash or How Adam Back Designed Bitcoin’s Motor Block Part III: If Bitcoin Had a First Draft, Wei Dai’s B-Money Was It Part IV: With Bit Gold, Szabo Was Inches Away From Inventing Bitcoin Part V: How Hal Finney’s Quest For Digital Cash Led To RPOW (And More) Pioneering cryptographer Hal Finney saw the need for an untraceable form of digital cash, and his work ultimately fostered the creation of Bitcoin.
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December 28, 2017
Abstract # In this piece, we list 19 Bitcoin consensus rule changes (or 18 as an accidental one “failed”), which represents what we believe to be almost every significant such event in Bitcoin’s history. At least three of these incidents resulted in an identifiable chainsplit, lasting approximately 51, 24, and six blocks, in 2010, 2013 and 2015, respectively.
This report was originaly published in BitMEX Research blog. Later it has been updated.
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July 28, 2015
This article by Arvind Narayanan was first published on Freedom to Tinker computer science blog.
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On March 11, 2013, Bitcoin experienced a technical crisis. Versions 0.7 and 0.8 of the software diverged from each other in behavior due to a bug, causing the block chain to “fork” into two. Considering how catastrophic a hard fork can be, the crisis was resolved quickly with remarkably little damage owing to the exemplary competence of the developers in charge.
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