Bitcoin calendar.
Halvings and network upgrades, the US releases that move markets, conferences, and the anniversaries of Bitcoin's history. Dates are in UTC.
In 40 days
Satoshi's last forum post, 2010
MilestonesSaturday 12 December
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).
January 2023
| Monday | Tuesday | Wednesday | Thursday | Friday | Saturday | Sunday |
|---|---|---|---|---|---|---|
| 1 | ||||||
| 2 | 3Genesis block, 2009 | 4 | 5 | 6 | 7 | 8Bitcoin v0.1, 2009 |
| 9 | 10 | 11Running bitcoin, 2009 | 12First transaction, 2009 | 13 | 14 | 15 |
| 16 | 17 | 18 | 19 | 20Ordinal inscriptions go live | 21 | 22 |
| 23 | 24 | 25 | 26 | 27 | 28 | 29 |
| 30 | 31 |
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Events in January 2023
Tuesday 3 January1399 days ago
The genesis block, 2009
14 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
Sunday 8 January1394 days ago
Bitcoin v0.1 is released, 2009
14 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)
Wednesday 11 January1391 days ago
Hal Finney tweets "Running bitcoin", 2009
14 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)
Thursday 12 January1390 days ago
The first bitcoin transaction, 2009
14 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)
Friday 20 January1382 days ago
Ordinal inscriptions go live
Casey Rodarmor released ord 0.4.0 and announced that inscriptions, a way to attach data such as images to individual satoshis, were live on Bitcoin's main network.
MilestonesSourceGitHub, ord 0.4.0 release (published 2023-01-20T18:45:16Z)