BitcoinCalendar
Bitcoin Calendar

Historical Bitcoin and freedom tech events delivered at your digital doorstep. Daily.

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npub1tcalvjvswjh5rwhr3gywmfjzghthexjpddzvlxre9wxfqz4euqys0309hn

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nprofile1qqs9uwlkfxg8ft6pht3c5z8d5epyt4munfqkk3x0npujhrysp2u7qzgpvemhxue69uhkv6tvw3jhytnwdaehgu3wwa5kuef0dec82c33w33kzmrkdfm8xam2dq6hyamgwgekw7thd4nx57n8dp6xsetcdfcxger6wek8sun989mhsen30g6x2at309enqves895xu0mzwfhkzerrv9ehg0t5wf6k2qfqwaehxw309a5xzan9dchxy6t5vdhkjm3dvdskcetwv3shytn0wfnsq4f0rw

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Last Notes

2026-04-06 08:00:02 UTC

🎓 One of the First Bitcoin Conferences
On April 6, 2011, bitcoiner Genjix spoke at the EPCA Bitcoin conference in Amsterdam, addressing an audience primarily composed of 50+ year old bankers.
https://i.nostr.build/roqwV.jpg
https://bitcoin-calendar.org/en/events/2011-04-06/one-of-the-first-bitcoin-conferences

2026-04-04 08:30:14 UTC

📚 Bitcoin and Ocean Thermal Energy
On April 4, 2022, Level39 drops a "Bitcoin and Ocean Thermal Energy" tweetstorm – a deep dive into how bitcoin mining could harness the planet's untapped power.
https://21ideas.org/img/oc-814.jpeg
https://bitcoin-calendar.org/en/events/2022-04-04/bitcoin-and-ocean-thermal-energy

2026-04-03 08:00:02 UTC

📚 Inalienable Property Rights: The Law, Language, Money, and Morality of Bitcoin
On April 3, 2022, Gigi published the article "Inalienable Property Rights: The Law, Language, Money, and Morality of Bitcoin."
https://21ideas.org/img/1111.jpeg
https://bitcoin-calendar.org/en/events/2022-04-03/inalienable-property-rights-the-law-language-money-and-morality-of-bitcoin

2026-03-28 08:00:02 UTC

🤑 Bitcoin Hits a Billion
On March 28, 2013 Bitcoin's market capitalization soared past $1 billion for the first time. The world was starting to pay attention—this wasn't just "magic internet money" anymore.
https://i.nostr.build/6GdmO.jpg
https://bitcoin-calendar.org/en/events/2013-03-28/bitcoin-hits-a-billion

2026-03-26 08:30:26 UTC

🦘 DigiCash Debuts in Australia | March 26, 1996
David Chaum's vision of digital cash crossed oceans. On this day, DigiCash officially launched in Australia, bringing cryptographic payments to the land down under — years before Bitcoin would perfect the dream.
https://i.nostr.build/AaK8q.png
https://bitcoin-calendar.org/en/events/1996-03-26/digicash-debuts-in-australia-march-26-1996

2026-03-26 08:00:03 UTC

🇬🇧 Britcoin: The UK's First Bitcoin Exchange
Paving the way for Bitcoin adoption in the UK, Britcoin launched on March 26, 2011. It allowed users to trade BTC directly for British pounds — back when Bitcoin was still a niche experiment.
https://i.nostr.build/5MbY4MZiQc5JWsG6.png
https://bitcoin-calendar.org/en/events/2011-03-26/britcoin-the-uks-first-bitcoin-exchange

2026-03-19 08:30:07 UTC

📚 "Bitcoin and Me"
On March 19, 2013 Hal Finney publishes a post "Bitcoin and Me" that reflects on his role in Bitcoin's early days, from mining his first blocks to his correspondence with Satoshi Nakamoto.
Despite his battle with ALS, he continued contributing to Bitcoin's development. His story highlights both his technical legacy and personal perseverance in the face of illness.
https://haven.bitcoin-calendar.org/386da2ac9029487a064965950ca158e05c7d3f1e535be81ad27c29784903f9a3.webp
https://bitcoin-calendar.org/en/events/2013-03-19/bitcoin-and-me

2026-03-18 08:00:04 UTC

🚦 FinCEN Releases First Bitcoin Businesses Guidelines
On March 18, 2013, the U.S. Financial Crimes Enforcement Network (FinCEN) released guidelines for the first time, suggesting that some participants in the Bitcoin economy should be classified as Money Services Businesses.
Such enterprises, providing money services (MSB), must register with the federal government, obtain the appropriate license, collect information about their clients, and take measures to combat money laundering by their clients.
This marked the beginning of harmful KYC and AML policies in the crypto space.
https://i.nostr.build/EHYQtRudQLxDJgrz.png
https://bitcoin-calendar.org/en/events/2013-03-18/fincen-releases-first-bitcoin-businesses-guidelines

2026-03-17 08:00:03 UTC

📖 "Mastering Bitcoin" Becomes Open for All
On March 17, 2016, Andreas Antonopoulos released his book "Mastering Bitcoin" to the public.
https://21ideas.org/img/books/mastering-bitcoin.png
https://bitcoin-calendar.org/en/events/2016-03-17/mastering-bitcoin-becomes-open-for-all

2026-03-15 08:00:02 UTC

📬 Bitcoin Core Starts Sending Notifications
On March 15, 2016, Bitcoin Core begins sending users notifications about security issues and new releases.
Notifications are available exclusively on an opt-in basis.
https://bitcoin-calendar.org/en/events/2016-03-15/bitcoin-core-starts-sending-notifications

2026-03-14 09:00:26 UTC

💬 Eric Hughes: "Code Is Not Enough"
On March 14, 1996, the author of the "Cypherpunk Manifesto" and the famous phrase "cypherpunks write code," Eric Hughes, comes to the conviction and shares his own opinion that code alone is not enough:
"Perhaps the single most important lesson I've learned from cypherpunks
is that code alone doesn't cut it. Not code alone, not code widely
distributed, not even code widely used. Some measure of toleration in
society for activities conducted in private is necessary for long
term success. Not convenient, not easier, but necessary."
https://i.nostr.build/Rk41XxdFbn1fcVXt.png
https://bitcoin-calendar.org/en/events/1996-03-14/eric-hughes-code-is-not-enough

2026-03-14 08:30:23 UTC

🪦 Bitcoin Obituary
On March 14, 2014, Warren Buffett calls bitcoin a mirage.
1 BTC = $629
https://pdl-iphone-cnbc-com.akamaized.net/VCPS/Y2014/M03D14/3000257232/6ED3-SB-0314-Buffett_L.mp4
https://bitcoin-calendar.org/en/events/2014-03-14/bitcoin-obituary

2026-03-13 08:14:30 UTC

- reply

Thats true, but it is exactly Bitcoin that fixed ecash's problem. Now that ecash became seamlessly and instantly interchangeable with censorship resistant money independent from third parties, it got reincarnated.
You no longer need to trust a single mint -- you can become a client of dozens or even hundreds of mints, all accessible from a single wallet.
You can swap your bearer asset tokens between mints at the speed of light thanks to lightning network and "cash them out" directly into LN or onchain.
Diversifying mints means you never risk large sums of money while getting the benefits of unparalleled privacy Bitcoin lacks and enjoying cutting edge tech like ecash tokens being used instead of API tokens and embedding payments into emojis, images, gifs (and pretty much anything).
Ecash is by no means a replacement of Bitcoin, but it a fascinating addition and a booster to the best money humanity has witnessed.

2026-03-13 08:00:02 UTC

🌐 Shopping on the Information Superhighway
On March 13, 1996, Europe's largest Internet provider EUnet integrates ECash. Europeans could now make cash purchases "right on the information superhighway."
https://bitcoin-calendar.org/en/events/1996-03-13/shopping-on-the-information-superhighway

2026-03-11 08:00:03 UTC

🪦 Bitcoin Obituary
On March 11, 2014, Fortune magazine published an article titled "The Real Reason Bitcoin is Doomed."
"The biggest obstacle to Bitcoin's success has always been getting the blessing from the very governments that many of its supporters consider enemies."
https://i.nostr.build/jYlzq.png
https://bitcoin-calendar.org/en/events/2014-03-11/bitcoin-obituary

2026-03-09 08:30:17 UTC

📜 Cypherpunk Manifesto
On March 9, 1993, Eric Hughes' "Cypherpunk Manifesto" was published. The manifesto emphasizes the importance of privacy and discusses the threats looming over it in the digital age.
https://bitcoin-calendar.org/en/events/1993-03-09/cypherpunk-manifesto

2026-03-09 08:00:02 UTC

📚 What is Multisig
On March 9, 2023, "What is Multisig" was published in the Unchained blog.
https://21ideas.org/img/multisig/cover.png
https://bitcoin-calendar.org/en/events/2023-03-09/what-is-multisig

2026-03-08 08:00:03 UTC

ℹ️ First Wikipedia Bitcoin Page
On March 8, 2009, the first Wikipedia page dedicated to Bitcoin was created.
https://bitcoin-calendar.org/en/events/2009-03-08/first-wikipedia-bitcoin-page

2026-03-07 08:30:25 UTC

⛓️ First P2SH Transaction
On March 7, 2012, the first transaction was made to an address supporting the P2SH standard. Pay-to-Script-Hash operations were standardized in BIP 16. They allow transactions to be sent to a hash code (an address starting with 3) instead of a public key hash (addresses starting with 1).
To spend bitcoin sent according to P2SH, the recipient must provide a script matching the hash and script data.
One of the most popular use cases for P2SH is multisig schemes. More about them below 👇
https://bitcoin-calendar.org/en/events/2012-03-07/first-p2sh-transaction

2026-03-07 08:00:02 UTC

🙅‍♂️ "I Am Not Dorian Nakamoto"
On March 7, 2014, Satoshi replies "I am not Dorian Nakamoto" to his own post that introduced Bitcoin to the world, in an attempt to refute the Newsweek magazine article.
https://haven.bitcoin-calendar.org/0d19dc9765f8568ee56e5cdbdc84d784aeabe649494a7d71651fe6defaf2f65c.webp
https://bitcoin-calendar.org/en/events/2014-03-07/i-am-not-dorian-nakamoto

2026-03-06 08:00:03 UTC

⛏️ Mysterious Miner
On March 6, 2011, Bitcoin hashrate briefly reached a new high of almost 900 Ghash/sec, but soon dropped to 500 Ghash/sec.
Some attribute this spike to some supercomputer or botnet that joined the Bitcoin network (the mysterious miner).
https://bitcoin-calendar.org/en/events/2011-03-06/mysterious-miner

2026-03-05 08:00:02 UTC

🪦 Bitcoin Obituary
On March 5, 2014, the Acton Institute, which had begun accepting bitcoin donations three months earlier, publishes an article titled "Bitcoin (Almost) Dead".
https://i.nostr.build/wGqD2.png
https://bitcoin-calendar.org/en/events/2014-03-05/bitcoin-obituary

2026-03-04 08:00:02 UTC

🗣️ Satoshi on Timestamps
On March 4, 2009, Satoshi speaks about timestamps in Bitcoin.
https://i.nostr.build/2R687.png
https://bitcoin-calendar.org/en/events/2009-03-04/satoshi-on-timestamps

2026-03-03 09:01:10 UTC

🗣️ P2P Exchanges
On March 3, 2010, Satoshi explains how p2p platforms coordinating bitcoin trading can work.
https://haven.bitcoin-calendar.org/03692991ec4864e0b410a8598b469e9e970b90ff95e5eb75e5bfff64d8daf83b.webp
https://bitcoin-calendar.org/en/events/2010-03-03/p2p-exchanges

2026-03-03 08:30:46 UTC

👑 Golden Parity Day
On March 3, 2017, bitcoin price exceeded the price of an ounce of gold for the first time.
https://i.imgflip.com/7d45df.jpg
https://bitcoin-calendar.org/en/events/2017-03-03/golden-parity-day

2026-03-03 08:00:03 UTC

❌ SilverGate Bank Closure
On March 3, 2023, the "pro-crypto" bank SilverGate's announcement about plans to close causes a significant sell-off of bitcoin and numerous shitcoins.
Like most "crypto businesses", the bank took on unsustainable leverage and could not withstand the negative market behavior in light of the FTX collapse and other related scam "companies".
https://s3.cointelegraph.com/uploads/2023-03/a3a7a4c5-7772-46c9-995d-1ac458d74e50.png
https://bitcoin-calendar.org/en/events/2023-03-03/silvergate-bank-closure

2026-03-02 08:00:02 UTC

📚 Phoenix LN Waller Guide
On March 2, 2023, a guide for the Phoenix lightning wallet was published.
https://21ideas.org/img/134.jpg
https://bitcoin-calendar.org/en/events/2023-03-02/phoenix-ln-waller-guide

2026-03-01 08:30:42 UTC

🔓 Largest Bitcoin Theft
On March 1, 2012, the largest bitcoin theft occurred – totaling about 50,000 BTC. The theft was made possible through a security breach on the Linode web host, resulting in the loss of 3,000 BTC by the Slush pool and 43,000 by the Bitcoinica exchange.
https://bitcoin-calendar.org/en/events/2012-03-01/largest-bitcoin-theft

2026-03-01 08:00:01 UTC

📚 The Best Bitcoin Hardware Wallets
On March 1, 2023, an article titled "The Best Bitcoin Hardware Wallets" was published on the Unchained blog.
https://21ideas.org/img/hwws/hwws.png
https://bitcoin-calendar.org/en/events/2023-03-01/the-best-bitcoin-hardware-wallets

2026-02-28 08:00:02 UTC

🚀 New ATH
On February 28, 2013, bitcoin exchange rate on Mt.Gox surpassed the peak of June 8, 2011, at $31.91.
This was the first time the maximum was exceeded in 601 days.
https://i.pinimg.com/originals/e4/38/99/e4389936b099672128c54d25c4560695.gif
https://bitcoin-calendar.org/en/events/2013-02-28/new-ath

2026-02-26 08:00:02 UTC

🥷 First ZKCP Payment
On February 26, 2016, the first successful Zero-Knowledge Contingent Payment (ZKCP) was made on the Bitcoin network.
https://bitcoin-calendar.org/en/events/2016-02-26/first-zkcp-payment

2026-02-25 08:30:44 UTC

🐪 Official Announcement of the Launch of Silk Road
On March 1, 2011, Ross Ulbricht created a thread on bitcointalk asking for opinions about the platform, using a new account `silkroad`, which would serve as the official account.
This effectively marked the launch of Silk Road.
https://bitcoin-calendar.org/en/events/2011-02-25/official-announcement-of-the-launch-of-silk-road

2026-02-25 08:00:02 UTC

🍕 Lightning Pizza Day
On February 25, 2018, eight years after buying pizza with bitcoin, Laszlo Hanyecz decides to buy pizza using Lightning Network.
nevent1qvzqqqqqqypzqh3m7eyeqa90gxaw8zsgaknyy3wh0jdyz66ye7v8j2uvjq9tncqfqqsp47gdta92y7unh0n8ckuxgct3kjmwc0gg7y908umjq8cezvqdpns0yflyk
https://i.nostr.build/turg4cNiqlfeMfyr.png
https://bitcoin-calendar.org/en/events/2018-02-25/lightning-pizza-day

2026-02-24 09:01:05 UTC

📝 Finney: "Why Remailers"
On February 24, 1993, Hal Finney in his mini-essay "Why Remailers" explains his vision regarding how this technology can become the foundation for anonymous p2p cash:
"Cypherpunk vision includes the ability to engage in transactions anonymously, using "digital cash", which would not be traceable to the participants."
https://bitcoin-calendar.org/en/events/1993-02-24/finney-why-remailers

2026-02-24 08:30:24 UTC

👨‍🎨 New Bitcoin Logo
On February 24, 2010, Satoshi shares an updated version of the Bitcoin logo.
https://i.nostr.build/dwoXv.png
https://bitcoin-calendar.org/en/events/2010-02-24/new-bitcoin-logo

2026-02-24 08:00:02 UTC

🗻 Death of Mt.Gox
On February 24, 2014, Mt. Gox, the largest bitcoin exchange at the time, halted trading due to insolvency.
Mt. Gox closed on February 25, 2014, and later filed for bankruptcy protection in Japan and the USA, losing 640,000 bitcoins.
https://bitcoin-calendar.org/en/events/2014-02-24/death-of-mtgox

2026-02-19 08:30:04 UTC

🪙 Silver Parity
On February 19, 2013, bitcoin reached silver parity. At a price of $29.65, bitcoin for the first time exceeded the value of an ounce of silver.
https://i.nostr.build/pioBArIFoy98nsQL.png
https://bitcoin-calendar.org/en/events/2013-02-19/silver-parity

2026-02-19 08:00:02 UTC

🤑 Trillion US Dollars
On February 19, 2021, bitcoin market capitalization exceeded one trillion US dollars.
https://i.nostr.build/6GdmO.jpg
https://bitcoin-calendar.org/en/events/2021-02-19/trillion-us-dollars

2026-02-18 08:30:06 UTC

🗣️ Satoshi on Emission
On February 18, 2010, Satoshi commented on Bitcoin's predetermined supply.
"In this regard, [Bitcoin] is more like precious metals. Instead of adjusting the supply to maintain a stable value, the supply is predetermined, and the value changes. As the number of users grows, the value of each coin increases. This can lead to a positive feedback loop: as the number of users increases, the value grows, which may attract more users wanting to benefit from the rising value."
https://bitcoin-calendar.org/en/events/2010-02-18/satoshi-on-emission

2026-02-18 08:00:01 UTC

📚 Bitcoin Privacy: Best Practices
On February 18, 2021, Gigi publishes the article "Bitcoin Privacy: Best Practices".
https://21ideas.org/img/187.jpeg
https://bitcoin-calendar.org/en/events/2021-02-18/bitcoin-privacy-best-pracitces

2026-02-17 08:00:09 UTC

📚 No KYC
On February 17, 2020, BitcoinQnA publishes the article "No KYC".
https://21ideas.org/img/188.jpeg
https://bitcoin-calendar.org/en/events/2020-02-17/no-kyc

2026-02-16 09:01:11 UTC

🚗 First Bitcoins for Car Collateral
On February 16, 2012, the first announcement appeared on the bitcointalk forum offering to lend the author 1000 BTC at 16% per month.
The interest would amount to 160 BTC. As collateral, the author of the post offered a BNR32 Skyline GT-R, whose value at that time was approximately 4 times higher than the loan.
https://i.nostr.build/URT2A5XqzykGHXAZ.png
https://bitcoin-calendar.org/en/events/2012-02-16/first-bitcoins-for-car-collateral

2026-02-16 08:30:38 UTC

🗄️ Mega Begins Accepting Bitcoin
On February 16, 2013, Kim Dotcom announced that the data storage service Mega, the successor to his platform Megaupload, which was shut down a year earlier, is starting to accept bitcoin.
https://bitcoin-calendar.org/en/events/2013-02-16/mega-begins-accepting-bitcoin

2026-02-16 08:00:07 UTC

👨‍💻 Launch of Bitcoin v0.10
February 16, 2015, Bitcoin v0.10 was launched
https://bitcoin-calendar.org/en/events/2015-02-16/launch-of-bitcoin-v010

2026-02-15 08:31:07 UTC

🗣️ Satoshi on Decentralization
On February 15, 2009, Satoshi explains the difference between Bitcoin and previous attempts to create digital cash free from government control.
https://i.nostr.build/EnE3K.png
https://bitcoin-calendar.org/en/events/2009-02-15/satoshi-on-decentralization

2026-02-15 08:00:05 UTC

🚗 First Announcement of a Car Sale for Bitcoin
On February 15, 2011, the first announcement of a car sale for bitcoin was published.
1 BTC = $1.07
https://i.nostr.build/aQEBZ.png
https://bitcoin-calendar.org/en/events/2011-02-15/first-announcement-of-a-car-sale-for-bitcoin

2026-02-14 08:30:34 UTC

🦾 Technological Breakthrough of DigiCash
On February 14, 1995, DigiCash made a breakthrough in reducing the cost of secure chip technology for smart cards.
https://i.nostr.build/EnEzl.png
https://bitcoin-calendar.org/en/events/1995-02-14/technological-breakthrough-of-digicash

2026-02-14 08:00:03 UTC

👽 Reddit Begins Accepting Bitcoin
On February 14, 2013, the social platform Reddit began accepting bitcoin as payment for the in-platform currency Reddit Gold.
https://bitcoin-calendar.org/en/events/2013-02-14/reddit-begins-accepting-bitcoin

2026-02-13 08:31:06 UTC

🚘 Porsche Cayman S Sold for 300 BTC
On February 13, 2013, the family sold a Porsche Cayman S for ~300 BTC. The car was valued at $40,000.
"Today, the Porsche was sold for ~300 bitcoins! If this isn't proof that bitcoin is a legitimate currency, then I don't know what will be proof."
https://bitcoin-calendar.org/en/events/2013-02-13/porsche-cayman-s-sold-for-300-btc

2026-02-13 08:00:04 UTC

⚡️ Lightning 🤝 Nostr
On February 13, 2023, Lightning network support was integrated into Nostr. This was made possible thanks to the NIP-57 by npub1xtscya34g58tk0z605fvr788k263gsu6cy9x0mhnm87echrgufzsevkk5s.
https://i.nostr.build/fQ9WY0nihdEJ1hw0.png
https://bitcoin-calendar.org/en/events/2023-02-13/lightning-nostr

2026-02-11 08:00:02 UTC

📃 Satoshi Nakamoto Presents Bitcoin on P2P Foundation
On February 11, 2009, Satoshi Nakamoto presents Bitcoin to the public, announcing his invention on the P2P Foundation forum.
https://haven.bitcoin-calendar.org/da16a2313ad8d2bc49467a6e1c097828acf4e35039b28704701781767c19fa58.webp
https://bitcoin-calendar.org/en/events/2009-02-11/satoshi-nakamoto-presents-bitcoin-on-p2p-foundation

2026-02-10 08:00:03 UTC

🌊 Sharp Surge in Bitcoin.org Traffic
On February 10, 2011, the bitcoin.org website experienced a sharp surge in traffic due to mentions on Slashdot, Hacker News, and Twitter in connection with reaching dollar parity.
https://bitcoin-calendar.org/en/events/2011-02-10/sharp-surge-in-bitcoinorg-traffic

2026-02-09 09:00:06 UTC

💲 Bitcoin Reaches US Dollar Parity
On February 9, 2011, Bitcoin reached US dollar parity, touching the mark of $1 per BTC on MtGox.
https://i.nostr.build/LeVdW.gif
https://bitcoin-calendar.org/en/events/2011-02-09/bitcoin-reaches-us-dollar-parity

2026-02-09 08:30:04 UTC

✅ We Accept Bitcoin
On February 9, 2011, Bespoke Car Detailing – a car care and detailing service – starts accepting bitcoin.
https://i.nostr.build/J6v3q.png
https://bitcoin-calendar.org/en/events/2011-02-09/we-accept-bitcoin

2026-02-09 08:00:02 UTC

🚘 Tesla Buys $1.5 Billion Worth of Bitcoin
On February 8, 2021, Tesla (for the first time) purchased $1.5 billion worth of bitcoin. Later, Elon Musk sold a significant portion of the coins.
https://i.nostr.build/ZeqUXKFxenBH8zhY.jpg
https://bitcoin-calendar.org/en/events/2021-02-09/tesla-buys-15-billion-worth-of-bitcoin

2026-02-05 09:01:20 UTC

₿ First Proposal of Bitcoin Symbol and Ticker
On February 5, 2010, a user on the bitcointalk forum with the nickname NewLibertyStandard first proposed defining a symbol for Bitcoin, as well as deciding on a ticker for the cryptocurrency, which would facilitate the exchange of Bitcoin for traditional currencies, goods, and services.
As a symbol, he suggested borrowing the Thai baht symbol, which subsequently led to the creation of the unique and well-known Bitcoin logo today. As for the ticker, NewLibertyStandard proposed BTC, which is globally used today.
https://i.nostr.build/E8S60vu2A23iNfnk.png
https://bitcoin-calendar.org/en/events/2010-02-05/first-proposal-of-bitcoin-symbol-and-ticker

2026-02-05 08:30:29 UTC

📚 Comparison of Monetary Standards
On February 5, 2021, Stefan Livera publishes his note "Comparison of Monetary Standards".
https://21ideas.org/img/sms-501.jpg
https://bitcoin-calendar.org/en/events/2021-02-05/comparison-of-monetary-standards

2026-02-05 08:00:03 UTC

🇸🇻 Re-Election of the Bitcoin President
On February 5, 2024, the first Bitcoin president, Nayib Bukele, is re-elected for a second term. |
https://i.nostr.build/fPlhqyqDqDPjLPRk.webp
https://bitcoin-calendar.org/en/events/2024-02-05/re-election-of-the-bitcoin-president

2026-02-04 08:00:02 UTC

👨‍💻 Launch of Bitcoin v0.1.5
On February 4, 2009, the Bitcoin v0.1.5 update was launched.
https://tenor.com/bS6ZX.gif
https://bitcoin-calendar.org/en/events/2009-02-04/launch-of-bitcoin-v015

2026-02-02 08:30:20 UTC

🐦 Twitter Adds Official #Bitcoin Hashtag
On February 2, 2020, Twitter added the official Bitcoin hashtag.
1 BTC = $9,388 |
https://i.nostr.build/q6Bnd.png
https://bitcoin-calendar.org/en/events/2020-02-02/twitter-adds-official-bitcoin-hashtag

2026-02-02 08:00:01 UTC

🙅‍♂️ Libra Shuts Down
On February 2, 2022, Facebook's project aimed at releasing the stablecoin Libra was shut down, never seeing the light of day.
https://i.nostr.build/cvL6VozAiWtddPqh.png
https://bitcoin-calendar.org/en/events/2022-02-02/libra-shuts-down

2026-02-01 08:00:02 UTC

🚚 Bitcoin for Truckers
On February 1, 2022, NobodyCaribou launched a campaign to collect bitcoin in support of Canadian truckers protesting against COVID lockdowns. The now-closed open-source platform Tallycoin was chosen for fundraising.
https://i.nostr.build/Tmb5xQ8BUL654n6z.png
https://bitcoin-calendar.org/en/events/2022-02-01/bitcoin-for-truckers

2026-01-31 08:00:01 UTC

🌐 Bitcoin.org in January 2009
Here's how bitcoin.org website looked in January 2009
https://i.nostr.build/EnE8n.jpg
https://bitcoin-calendar.org/en/events/2009-01-31/bitcoinorg-in-january-2009

2026-01-30 08:30:47 UTC

⛏️ First ASIC Miner Launched
On January 30, 2013, the world's first ASIC miner began securing the Bitcoin network. More than 50 times more efficient than existing graphics processors, the ASIC single-handedly mined over 25 BTC per day.
📸 From left to right: Charlie Shrem, Yifu Guo, ASIC miner Avalon1
https://i.nostr.build/KGe9l.jpg
https://bitcoin-calendar.org/en/events/2013-01-30/first-asic-miner-launched

2026-01-30 08:00:02 UTC

📚 Mechanism of Lightning Network Operation
On January 30, 2018, Dmitry Laptev published an article "Mechanism of Lightning Network Operation".
https://21ideas.org/img/mln-850.jpeg
https://bitcoin-calendar.org/en/events/2018-01-30/mechanism-of-lightning-network-operation

2026-01-28 08:30:32 UTC

🗣️ Hal on the Complexity of Mining
On January 28, 2011, Hal Finney spoke about the positive impact of the high cost of mining for the Bitcoin network.
https://i.nostr.build/Vx4KTGkr9b829FLo.png
https://bitcoin-calendar.org/en/events/2011-01-28/hal-on-the-complexity-of-mining

2026-01-28 08:00:02 UTC

🗣️ Ray Dalio on Bitcoin
On January 28, 2021, Ray Dalio, the manager of the world's largest hedge fund, speaks enthusiastically about Bitcoin in a message to Bridgewater Associates clients.
https://i.nostr.build/hpCoeAihFPHRdRjF.png
https://bitcoin-calendar.org/en/events/2021-01-28/ray-dalio-on-bitcoin

2026-01-27 08:00:02 UTC

🐪 Silk Road Day
On 27 of January, 2011, the Silk Road marketplace became available online.
Silk Road, which became proof of Bitcoin's permissionlessness, censorship resistance, and pseudonymity, was a black market on the Internet and the first modern darknet marketplace.
https://bitcoin.holiday/events/events/1-27.jpg
https://bitcoin-calendar.org/en/events/2011-01-27/silk-road-day

2026-01-25 09:01:31 UTC

🗂️ Genesis Files
On January 25, 2009, Satoshi discusses with Hal Finney possible botnet attacks and ways to counter them.
In this discussion, Satoshi describes what today is the basis of advertising on the Lightning network aka "Zapvertising."
https://bitcoin-calendar.org/en/events/2009-01-25/genesis-files

2026-01-25 08:30:43 UTC

🪦 Bitcoin Obituary
January 29, 2015, Forbes publishes an article "How Apple Pay and the Dollar are Killing Bitcoin".
"Bitcoin – a House of Cards"
1 BTC = $232.40
https://i.nostr.build/zdlgY.jpg
https://bitcoin-calendar.org/en/events/2015-01-25/bitcoin-obituary

2026-01-25 08:00:07 UTC

🇸🇻 IMF Urges El Salvador to Abandon Bitcoin
On January 25, 2022, the IMF urged El Salvador to abandon bitcoin as legal tender.
El Salvador ignored the Fund's concerns.
1 BTC = $36,500
https://bitcoin-calendar.org/en/events/2022-01-25/imf-urges-el-salvador-to-abandon-bitcoin

2026-01-24 08:00:05 UTC

🪦 Bitcoin Obituary
On January 24, 2014, Nobel laureate in economics, Robert Shiller, speaking at a conference in Davos, called bitcoin a bubble.
"It's a bubble, there is no doubt about it"
https://i.nostr.build/eZ2Wz.png
https://bitcoin-calendar.org/en/events/2014-01-24/bitcoin-obituary

2026-01-21 08:00:02 UTC

🙈 Ordinals Launched
On January 21, 2023, Casey Rodarmor announces the launch of Ordinals – a protocol that adds NFT functionality as an overlay on top of the main Bitcoin layer.
https://bitcoin-calendar.org/en/events/2024-01-21/ordinals-launched

2026-01-19 08:00:02 UTC

📚 Ultimate Guide to Storing Your Bitcoin Seed Phrase Backups
On January 19, 2022, Steven Hall publishes an "Ultimate Guide to Storing Your Bitcoin Seed Phrase Backups".
https://21ideas.org/img/secure-seed/vault.png
https://bitcoin-calendar.org/en/events/2022-01-19/ultimate-guide-to-storing-your-bitcoin-seed-phrase-backups

2026-01-17 08:30:05 UTC

🙈 Hal Finney Predicts NFTs
On January 17, 1993, Hal Finney became the first to describe what we know today as NFTs, calling them cryptographic collectible cards.
https://i.nostr.build/TQmS1KByYf9dP3QB.jpg
https://bitcoin-calendar.org/en/events/1993-01-17/hal-finney-predicts-nfts

2026-01-17 08:00:01 UTC

🗣️ Satoshi on Bitcoin
On January 17, 2009, Satoshi expresses his opinion to create one of the historical Bitcoin quotes.
https://bitcoin-calendar.org/en/events/2024-01-17/satoshi-on-bitcoin

2026-01-16 09:01:01 UTC

🗣️ Satoshi on Bitcoin Adoption
On January 16, 2009, Satoshi shared his thoughts on possible scenarios for Bitcoin adoption.
https://bitcoin-calendar.org/en/events/2009-01-16/satoshi-on-bitcoin-adoption

2026-01-16 08:30:23 UTC

😨 Hal Spent the Coins Received From Satoshi
On January 16, 2011, Hal Finney informed bitcointalk users that he had unintentionally spent the coins he received from Satoshi in the first transaction in Bitcoin's history.
At that time, Bitcoin wallets did not allow users to choose which coins to spend; moreover, as it turned out, Hal did not know that he was the recipient of the first Bitcoin transaction. He considered this transaction as a test and planned to return the coins to Satoshi, but "apparently did not do so."
It is also interesting that the first transaction was a payment to an IP address, rather than the later standard transaction to a public key.
https://i.nostr.build/aFjKARu4q0Zpm4Sw.png
https://bitcoin-calendar.org/en/events/2011-01-16/hal-spent-the-coins-received-from-satoshi

2026-01-16 05:14:26 UTC

2026-01-16 04:12:41 UTC

📚 Lightning Wallets Comparison
On January 16, 2024, Tony published a Lightning wallets comparison guide.
https://21ideas.org/img/ln-wallets/cover.png
https://bitcoin-calendar.org/en/events/2024-01-16/lightning-wallets-comparison

2026-01-01 08:30:05 UTC

💶 Launch of the Euro
January 1, 1999, marks the official launch of the Euro - a currency that today is official for two dozen European countries.
Despite high expectations of the positive impact from the introduction of the Euro, the currency behaved similarly to all its fiat counterparts and lost 90% of its value over 25 years of its existence.
https://i.nostr.build/1m7N6pyqiptVjQtO.jpg
https://bitcoin-calendar.org/en/events/1999-01-01/launch-of-the-euro

2026-01-01 08:00:02 UTC

📚 Trusted Third Parties Are Security Holes
On January 1, 2001, Nick Szabo publishes the article "Trusted Third Parties Are Security Holes."
https://21ideas.org/img/dts-601.png
https://bitcoin-calendar.org/en/events/2001-01-01/trusted-third-parties-are-security-holes

2025-12-30 09:31:47 UTC

⛏️ First Bitcoin Difficulty Adjustment
On December 30, 2009, the first increase in Bitcoin mining difficulty occurred at 06:11:04 GMT.
https://21ideas.org/img/mining/01.webp
https://bitcoin-calendar.org/en/events/2009-12-30/first-bitcoin-difficulty-adjustment

2025-12-30 09:00:56 UTC

💎 Diamonds for Bitcoin
On December 30, 2014, iDIAMONDS begins accepting bitcoin payments for engagement rings.
https://i.nostr.build/Q7RMa.png
https://bitcoin-calendar.org/en/events/2014-12-30/diamonds-for-bitcoin

2025-12-30 08:30:04 UTC

📚 Bitcoin & the HOPF Cycle of the Internet
On December 30, 2020, Giacomo Zucco publishes the essay "Bitcoin & the HOPF Cycle of the Internet".
https://21ideas.org/img/hopf-598-en.jpeg
https://bitcoin-calendar.org/en/events/2020-12-30/bitcoin-the-hopf-cycle-of-the-internet

2025-12-30 08:00:03 UTC

📚 Freedom of Value
On December 30, 2021, Gigi publishes the article "Freedom of Value".
https://21ideas.org/img/svob-721-en.webp
https://bitcoin-calendar.org/en/events/2021-12-30/freedom-of-value

2025-12-29 08:30:03 UTC

📚 Bitcoin is the Only Real Meme
On December 29, 2021, Gigi publishes a tweetstorm "Bitcoin is the Only Real Meme".
https://21ideas.org/img/meme-752-en.jpeg
https://bitcoin-calendar.org/en/events/2021-12-29/bitcoin-is-the-only-real-meme

2025-12-29 08:00:02 UTC

👎 MSTR Sells Bitcoin for the First Time
On December 29, 2022, Microstrategy for the first (and seemingly last) time sells some bitcoin.
https://bitcoin-calendar.org/en/events/2022-12-29/mstr-sells-bitcoin-for-the-first-time

2025-12-28 08:30:03 UTC

📚 A Complete History of Bitcoin Consensus Forks
On December 28, 2017, BitMex Research published the report "A Complete History of Bitcoin Consensus Forks" (updated on May 12, 2022).
https://21ideas.org/img/forks-01.jpg
https://bitcoin-calendar.org/en/events/2017-12-28/a-complete-history-of-bitcoin-consensus-forks

2025-12-28 08:00:02 UTC

🚚 Freedom Convoy Begins Accepting Bitcoin
On December 28, 2022, the Canadian "Freedom Convoy" movement began accepting bitcoin donations in response to the government's freezing of bank accounts of participants protesting against quarantine measures.
https://bitcoin-calendar.org/en/events/2022-12-28/freedom-convoy-begins-accepting-bitcoin

2025-12-27 08:00:03 UTC

📄 Bit Gold
On December 27, 2008 Nik Szabo writes about BitGold
https://bitcoin-calendar.org/en/events/2008-12-27/bit-gold

2025-12-26 08:00:02 UTC

📚 Is Lightning Centralized?
On December 26, 2022, DarthCoin ₿ published "Is Lightning Centralized?".
https://21ideas.org/img/csl-716-en.jpg
https://bitcoin-calendar.org/en/events/2022-12-26/is-lightning-centralized

2025-12-25 08:00:02 UTC

📚 Can Bitcoin Survive An Apocalypse?
On December 25, 2021, Bitcoin Magazine publishes the article "Can Bitcoin Survive An Apocalypse?".
https://21ideas.org/img/apo-555.png
https://bitcoin-calendar.org/en/events/2021-12-25/can-bitcoin-survive-an-apocalypse

2025-12-23 08:00:02 UTC

🖨️ Federal Reserve Act
The "Federal Reserve Act" of December 23, 1913, established the Federal Reserve System and granted it the authority to issue Federal Reserve System banknotes (later converted into US dollars) and Federal Reserve Bank notes, used as legal tender in the United States.
This act essentially became the foundation for the greatest deception in history.
https://bitcoin-calendar.org/en/events/1913-12-23/federal-reserve-act

2025-12-22 08:30:04 UTC

🚀 Star Strike Released
On December 22, 1981, Star Strike – a shoot 'em up video game developed by Hal Finney – was released by Mattel for its Intellivision video game system.
https://haven.bitcoin-calendar.org/1686fc98d6e4d29ad70b60a036e38b014873cd026a2b67a2578d3a81cb0cce9e.webp
https://haven.bitcoin-calendar.org/d51ba5598875a8468bd27a0c2c88f21660f92b8f295a568b71f36a9f983a95b7.mp4
https://bitcoin-calendar.org/en/events/1981-12-22/star-strike-released

2025-12-22 08:00:03 UTC

🪦 Bitcoin Obituary
On December 22, 2014, an article titled "Will Bitcoin Survive 2015?" was published on Aol.
"Arguably, the most legitimate threat [to Bitcoin] is the company Ripple, which boasts a fast payment system similar to PayPal."
1 BTC = $319.24
https://bitcoin-calendar.org/en/events/2014-12-22/bitcoin-obituary

2025-12-21 08:00:01 UTC

🚰 Ledger Leak
On December 21, 2020, the Ledger customer database was publicly posted on the online forum RaidForums.
Compromised were:
- Over 1,000,000 email addresses,
- Over 250,000 physical addresses and phone numbers,
Numerous reports confirm the authenticity of the database.
https://i.nostr.build/loicb2G7cKsScxAi.jpg
https://bitcoin-calendar.org/en/events/2020-12-21/ledger-leak

2025-12-19 08:00:02 UTC

📚 Bitcoin's Eternal Struggle
On December 19, 2019, Gigi publishes the article "Bitcoin's Eternal Struggle".
https://21ideas.org/img/202.jpg
https://bitcoin-calendar.org/en/events/2019-12-19/bitcoins-eternal-struggle

2025-12-18 08:00:01 UTC

✊ HODL Day
On this day in 2013, a (seemingly) very drunk user on the bitcointalk forum decided to write a message about why he wasn't selling coins despite the price drop.
https://bitcoin-calendar.org/en/events/2013-12-18/hodl-day

2025-12-17 09:00:05 UTC

📚 Shelling Out: The Origins of Money
On December 17, 2002, Nick Szabo publishes his phenomenal essay "Shelling Out: The Origins of Money."
https://21ideas.org/img/shel-562.jpg
https://bitcoin-calendar.org/en/events/2002-12-17/shelling-out-the-origins-of-money