🪦 Bitcoin Obituary On October 2, 2015, an article titled "Why Bitcoin is Not the Wave of the Future" is published. "Analyzing the facts, it becomes clear that Bitcoin is not destined to grow and become more mature than it is now." 1 BTC = $237.40 https://bitcoin-calendar.org/en/events/2015-10-02/bitcoin-obituary

⛏️ First Public Software for Mining on OpenCL On October 1, 2010, the first public software for Bitcoin mining on OpenCL was released. The OpenCL miner is software for Bitcoin mining that uses the OpenCL framework for hashing. When used with a modern GPU, this approach provided hash rates an order of magnitude higher than those achievable with a CPU. https://bitcoin-calendar.org/en/events/2010-10-01/first-public-software-for-mining-on-opencl

👮‍♂️ Ross Ulbricht's Arrest On October 1, 2013, federal agents arrested Ross William Ulbricht, the founder of the online marketplace Silk Road, in a San Francisco public library on charges of drug trafficking, computer hacking, and money laundering. Later, Ulbricht was convicted and received two life sentences for non-violent crimes. https://bitcoin-calendar.org/en/events/2013-10-01/ross-ulbrichts-arrest

🪦 Bitcoin Obituary On September 30, 2013, Christian Wagner publishes a FAQ page dedicated to why you shouldn't buy Bitcoin. "It's impossible to explain Bitcoin without resorting to boring technical terms, so you probably shouldn't bother with it. Better to do something useful." 1 BTC = $125.18 https://bitcoin-calendar.org/en/events/2013-09-30/bitcoin-obituary

🎉 Birthday of Ludwig von Mises On September 29, 1881, Ludwig von Mises was born, who made a significant contribution to the development of the Austrian School of Economics and became one of the founders of the philosophy of libertarianism. We suggest celebrating the birthday of the outstanding economist, philosopher, sociologist, and praxeologist by familiarizing yourself with a brief summary of his lectures, known today as "Mises' Six Lessons." https://bitcoin-calendar.org/en/events/1881-09-29/birthday-of-ludwig-von-mises

🗝️ First Proposal for Multisig Transactions On September 29, 2011, Gavin Andresen made the first pull request aimed at adding the functionality of signing a transaction with multiple keys. Later, his proposal was edited, but it became the first version close to what we today call "multisig". Multisig is a scheme for storing and spending coins designed to enhance the security of interacting with Bitcoin and introduced the possibility of joint coin custody. Find more info on multisig below 👇 https://bitcoin-calendar.org/en/events/2011-09-29/first-proposal-for-multisig-transactions

🐂 GNU Announced On September 27, 1983, Richard Stallman announced the GNU Project – his plan to create a complete, free Unix-compatible operating system. GNU provided the essential tools, libraries, and the legal/ethical framework (via the Free Software Foundation and copyleft) that, paired with the Linux kernel, became the GNU/Linux systems used around the world. Its insistence on the four software freedoms (run, study, modify, share) helped create and define today’s FOSS movement. "I consider that the golden rule requires that if I like a program I must share it with other people who like it. I cannot in good conscience sign a nondisclosure agreement or a software license agreement." https://bitcoin-calendar.org/en/events/1983-09-27/gnu-announced

🪦 Bitcoin Obituary On September 27, 2019, billionaire Mark Cuban stated that Bitcoin is useless because it is too complicated. Mark tells viewers that it's better to own bananas, at least you can eat them. https://bitcoin-calendar.org/en/events/2019-09-27/bitcoin-obituary

🚕 First Taxi Service Accepts Bitcoin On September 26, 2012, the first taxi service in Herefordshire starts accepting Bitcoin. https://bitcoin-calendar.org/en/events/2012-09-26/first-taxi-service-accepts-bitcoin

📚 Bitcoin Universe On September 26, 2021, Robert Breedlove published a tweetstorm "Bitcoin Universe". In this tweetsorm Breedlove asserts that Bitcoin is the "hardest" money in history due to its fixed supply and high stock-to-flow ratio, a quality that he argues will inevitably lead it to outcompete gold and government-issued fiat currency, the "softest" money in history. https://bitcoin-calendar.org/en/events/2012-09-26/bitcoin-universe

📚 Bitcoin = Freedom On September 25, 2019, Ross Ulbricht wrote his essay "Bitcoin = Freedom" from behind the walls of a correctional facility in Tucson, Arizona. In his essay, Ross argues that Bitcoin is more than just money; it is a tool for freedom and a response to the problems of centralized authority. He discusses how Bitcoin's value came from the belief of its early adopters, and how its decentralized nature allows for peer-to-peer transactions without the need for banks or governments. https://bitcoin-calendar.org/en/events/2019-09-25/bitcoin-freedom

👨‍💻 Launch of Bitcoin 0.4 On September 23, 2011, Gavin Andresen released the Bitcoin 0.4.0 update. With Bitcoin version 0.4.0, you could now protect your wallet with a passphrase for the very first time, adding a major security layer. This update also included bug fixes and a switch to a newer database version, making it incompatible with older clients. See archived announcement and detailed explanation of how passphrases work below. https://bitcoin-calendar.org/en/events/2011-09-23/launch-of-bitcoin-04

⛏️ 10 Million BTC Mined On September 22, 2012, the 10-millionth bitcoin was mined. https://bitcoin-calendar.org/en/events/2012-09-22/10-million-btc-mined

Bitcoin Calendar is a passion project, made possible entirely by the support of the community. I believe in transparency and collaboration, which is why the project is almost fully open-source, and the database is freely available to everyone. Find the code here:

GitHub

Bitcoin Calendar

Archiving and relaying every Bitcoin milestone. Bitcoin Calendar has 5 repositories available. Follow their code on GitHub.

Support the project: https://bitcoin-calendar.org/en/support A huge thank you to everyone who sends sats! Your contributions help continue building and sharing our work. I’m excited to see you enjoy what you discovered.

📚 On Bitcoin's UX On September 20, 2020, Gigi publishes an article "On Bitcoin's UX". https://bitcoin-calendar.org/en/events/2020-09-20/on-bitcoins-ux

👨‍💻 BEPs – Bitcoin Enhancement Proposals On September 19, 2011, genix proposed standardizing the protocol improvement process. Genix adapted PEP 0001 of the Python programming language to Bitcoin, suggesting the name BEP – "Bitcoin Enhancement Proposal". Later, during correspondence in the bitcoin developers mailing list, Gavin Andresen proposed changing the abbreviation to BIP – "Bitcoin Improvement Proposal". The reason was that the abbreviation BEP was already used by the BitTorrent protocol – "BitTorrent Enhancement Proposal". https://bitcoin-calendar.org/en/events/2011-09-19/beps-bitcoin-enhancement-proposals

📚 Only the Strong Survive On September 19, 2021, Allen Farrington and Big Al publish their essay "Only the Strong Survive". https://bitcoin-calendar.org/en/events/2021-09-19/only-the-strong-survive

👨‍⚖️ Court Decision on Trendon Shavers On September 18, 2014, a final court decision was issued against Trendon T. Shavers, also known as "Pirateat40". The operator of the fraudulent scheme Bitcoin Savings and Trust (BTCST) was ordered to pay over $40 million in compensation and fines. The online organization that Shavers created and used to operate his Ponzi scheme allowed him to fraudulently extract more than 700,000 bitcoin from investors. https://bitcoin-calendar.org/en/events/2014-09-18/court-decision-on-trendon-shavers

📚 Notable Publication On September 18, 2021, a guide to the Coldcard hardware wallet was published. https://bitcoin-calendar.org/en/events/2021-09-18/notable-publication

🍔 US President Pays with Bitcoin for the First Time On September 18, 2024, the 45th President of the USA and a presidential candidate in the current race publicly paid with bitcoin for the first time. The presidential candidate visited the New York Bitcoin bar PubKey and treated guests to several dozen burgers, paying $998.7 in BTC. He used the Lightning Network. https://bitcoin-calendar.org/en/events/2024-09-18/us-president-pays-with-bitcoin-for-the-first-time