📧 Satoshi's First Email to Adam Back On August 20, 2008, Satoshi sent his first email to Adam Back to inform him of his intention to publish a whitepaper and to confirm the correct reference to Adam's Hashcash. "I think you'll find [my work] interesting, since it finds a new use for hash-based proof-of-work as a way to make e-cash work."

Part II: Hashcash or How Adam Back Designed Bitcoin’s Motor Block

A look at how the technology underlying Hashcash — proof of work — would shape research into digital money for more than a decade to come.

🌐 Bitcoin.org Domain Name Registered On August 18, 2008, the domain name bitcoin.org was registered. https://archive.bitcoin-calendar.org/archive/1748724515.451488/index.html#singlefile.html

👑 Dawn of the Gold Standard On August 15, 1971, US President Richard Nixon ended the convertibility of the dollar into gold, effectively ending the gold standard. https://archive.bitcoin-calendar.org/archive/1748722872.885109/index.html

👨‍💻 Reusable Proof of Work On August 15, 2004, Hal Finney announced the launch of RPOW - Reusable Proof-of-Work - a concept that was never fully implemented but became a significant milestone in the formation of a permissionless, borderless money. Learn more about Hal and RPOW on 21ideas.org https://archive.bitcoin-calendar.org/archive/1749137118.95437/index.html

📧 Satoshi's Email On August 15, 2015, Satoshi, or someone who gained access to the email used by Satoshi to first announce #Bitcoin, wrote a letter in support of small blockers. "When I designed Bitcoin, I designed it in such a way as to make future modifications to the consensus rules difficult without near unanimous agreement. Bitcoin was designed to be protected from the influence of charismatic leaders, even if their name is Gavin Andresen, Barack Obama, or Satoshi Nakamoto." https://archive.bitcoin-calendar.org/archive/1748768854.581385/index.html

🪁 Coinkite is Born On August 13, 2011, Coinkite was founded, specializing in the production of hardware solutions for #Bitcoin and many other cool types of Bitcoin merch. https://archive.bitcoin-calendar.org/archive/1748756490.46535/index.html

💡 Satoshi Proposes Automated Bitcoin Escrows On August 11, 2010, Satoshi proposed automated escrows on #Bitcoin, which could potentially enhance the security of users' stored coins. https://archive.bitcoin-calendar.org/archive/1748726779.1217/index.html

🥇 Microstrategy Buys Its First Bitcoin On August 11, 2020, #Microstrategy became the first publicly traded company with #bitcoin in its treasury. The company acquired 21,454 #BTC for $250 million, with an average price per coin of $11,653. https://archive.bitcoin-calendar.org/archive/1748775485.849923/index.html

✍️ Hal Finney's Last Post On August 9, 2013, Hal Finney published his last post on #bitcointalk. https://archive.bitcoin-calendar.org/archive/1748764348.261527/index.html

🪪 BitLicense Comes into Effect On August 8, 2015, the New York Department of Financial Services began requiring the #BitLicense for conducting "money transmitter" business in the state. https://archive.bitcoin-calendar.org/archive/1748769041.023304/index.html#archive_dot_org

☑️ SegWit Activation On August 8, 2017, Segregated Witness was officially locked in by the #UASF client on the #Bitcoin network. This milestone was reached when 100% of miners signaled support for #SegWit between blocks 477,792 and 479,807. Thus, the SegWit upgrade was locked-in and would be fully activated in approximately two weeks at the start of the next difficulty adjustment period. Learn more about SegWit in Jonathan Bier's book "The Blocksize War." https://archive.bitcoin-calendar.org/archive/1748772139.296635/index.html#singlefile.html

🗣️ Satoshi on Bitcoin's Utility On August 7, 2010, Satoshi challenged the assertion that #Bitcoin's use of PoW was a waste. 1 BTC = $0.06 https://archive.bitcoin-calendar.org/archive/1748726676.295892/index.html

📚 Notable Publication On August 7, 2019, GiGi published the article "Proof of Life."

Proof of Life. Why Bitcoin is a Living Organism

🤠 "Futurama" Bitcoin Episode On August 7, 2023, the 143rd episode of #Futurama was released, with its plot revolving around #Bitcoin: Professor Farnsworth gets into debt with the robot mafia, losing all his money on bitcoin #trading, and Bender buys a donkey for 15 mBTC and becomes a hostage on a Bitcoin farm. https://archive.bitcoin-calendar.org/archive/1748778880.818483/index.html

🤴 Bank of England Tries to Accumulate Gold During the WWI period there were multiple occasions upon which large sums of #gold coin were withdrawn from circulation by the Bank of England. On August 6, 1915, His Majesty's government published the following appeal: https://archive.bitcoin-calendar.org/archive/1748722598.985649/index.html#boe-1914-1921-vol2-chapter5a.pdf

👨‍⚖️ First Lawsuit Against a Bitcoin Exchange On August 6, 2012, the first lawsuit was filed against a company involved with #Bitcoin. Four bitcoiners, including Jed McCaleb, the founder of #MtGox, sued #Bitcoinica exchange, which had been hacked and refused to return customer funds. At that time, $460,000 was at stake. https://haven.bitcoin-calendar.org/d726e911c3d692ee560f91556b93a5aa31575e2297dbc1fc6c98ebfff8c25109.pdf

🪦 Bitcoin Obituary On August 6, 2018, Goldman analysts made a bold statement: "#Bitcoin is never coming back." Time showed they were greatly mistaken. 1 #BTC = $7,000 https://archive.bitcoin-calendar.org/archive/1748773879.447525/index.html

🔮 Milton Friedman Predicts E-cash In August of 1999, Nobel laureate Milton Friedman predicted the emergence of e-cash – a currency untraceable from external sources. Although #Bitcoin is not an anonymous network, there are many ways to achieve a decent level of privacy. You can find more info on #privacy in a dedicated section of 21ideas.org website.

🎭 First Attempt to Deanonymize Bitcoin Users On August 4, 2011, Dan Kaminsky shared his development of a mechanism to deanonymize #Bitcoin users by correlating transmitted transactions with node IP addresses with participants of the #bitcointalk forum. https://archive.bitcoin-calendar.org/archive/1748756292.404456/index.html

📚 Notable Publication On August 4, 2021, the Samourai Wallet development team published a series of articles "Understanding Bitcoin Privacy."

Understanding Bitcoin Privacy with OXT