Bitcoin calendar.
Halvings and network upgrades, the US releases that move markets, conferences, and the anniversaries of Bitcoin's history. Dates are in UTC.
10 dates for milestones from 30 October 2026 to 30 October 2027.
October 2026
Saturday 31 OctoberTomorrow
The Bitcoin whitepaper, 2008
18 years ago. Satoshi Nakamoto announced the paper "Bitcoin: A Peer-to-Peer Electronic Cash System" on the Cryptography Mailing List, describing electronic cash that works without a bank or other trusted third party.
MilestonesSourceSatoshi Nakamoto Institute, "Bitcoin P2P e-cash paper" email (dated 31 Oct 2008, 18:10:00 UTC)What happened
December 2026
Saturday 12 DecemberIn 43 days
Satoshi's last forum post, 2010
16 years ago. Satoshi Nakamoto posted for the last time on the Bitcoin forum, announcing version 0.3.19 with new limits against denial-of-service attacks (attempts to overload nodes).
MilestonesSourceSatoshi Nakamoto Institute, "Added some DoS limits, removed safe mode (0.3.19)" (12 Dec 2010, 18:22:33 UTC)
Friday 18 DecemberIn 49 days
The "HODL" post, 2013
13 years ago. A bitcointalk user called GameKyuubi posted "I AM HODLING" during a sharp price fall, misspelling "holding". "HODL" became slang for keeping bitcoin rather than selling it.
MilestonesSourceGameKyuubi, "I AM HODLING", bitcointalk (archived copy)
January 2027
Sunday 3 JanuaryIn 65 days
The genesis block, 2009
18 years ago. The first block of the Bitcoin blockchain, block 0, was created. Its only transaction contains the text "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks".
MilestonesSee block 0See the paymentSourcemempool.space, block 0 (timestamp 1231006505)What happened
Friday 8 JanuaryIn 70 days
Bitcoin v0.1 is released, 2009
18 years ago. Satoshi Nakamoto announced the first release of the Bitcoin software, a Windows-only program with open-source C++ code, on the Cryptography Mailing List.
MilestonesSourceCryptography Mailing List archive, "Bitcoin v0.1 released" (Thu Jan 8 14:27:40 EST 2009)
Monday 11 JanuaryIn 73 days
Hal Finney tweets "Running bitcoin", 2009
18 years ago. Cryptographer Hal Finney posted "Running bitcoin" on Twitter, two days after block 1, the first block after the genesis block, was mined.
MilestonesSourceTwitter's oEmbed data for the tweet (dated January 11, 2009)
Tuesday 12 JanuaryIn 74 days
The first bitcoin transaction, 2009
18 years ago. Satoshi Nakamoto sent 10 bitcoin to Hal Finney in block 170, the first transaction that moved coins from one person to another.
MilestonesSee block 170See the paymentSourceHal Finney, "Bitcoin and me", bitcointalk, 19 March 2013 (archived copy)
May 2027
Saturday 22 MayIn 204 days
Bitcoin Pizza Day, 2010
17 years ago. Laszlo Hanyecz paid 10,000 BTC for two pizzas, one of the first known purchases made with bitcoin.
MilestonesSee block 57,043See the paymentSourceLaszlo Hanyecz, "Pizza for bitcoins?", bitcointalk (archived copy)What happened
October 2027
Friday 29 OctoberIn 364 days
The first bitcoin ATM opens, 2013
14 years ago. A bitcoin ATM made by Robocoin went live in a Waves Coffee House in downtown Vancouver, Canada. CBC News reported it as a world first: after scanning the customer's palm, it swapped Canadian dollars for bitcoin and back.
MilestonesSourceCBC News, World's first bitcoin ATM opens in Vancouver, 29 Oct 2013What happened
Sunday 31 OctoberIn 366 days
The Bitcoin whitepaper, 2008
19 years ago. Satoshi Nakamoto announced the paper "Bitcoin: A Peer-to-Peer Electronic Cash System" on the Cryptography Mailing List, describing electronic cash that works without a bank or other trusted third party.
MilestonesSourceSatoshi Nakamoto Institute, "Bitcoin P2P e-cash paper" email (dated 31 Oct 2008, 18:10:00 UTC)What happened