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 41 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 2026
| Monday | Tuesday | Wednesday | Thursday | Friday | Saturday | Sunday |
|---|---|---|---|---|---|---|
| 1 | 2 | 3Genesis block, 2009 | 4 | |||
| 5 | 6 | 7 | 8Bitcoin v0.1, 2009 | 9 | 10Finney Prize | 11Running bitcoin, 2009 |
| 12First transaction, 2009 | 13 | 14 | 15 | 16 | 17 | 18 |
| 19 | 20 | 21 | 22 | 23 | 24 | 25 |
| 26 | 27 | 28 | 29 | 30 | 31 |
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Events in January 2026
Saturday 3 January302 days ago
The genesis block, 2009
17 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
Thursday 8 January297 days ago
Bitcoin v0.1 is released, 2009
17 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)
Saturday 10 January295 days ago
Andreas M. Antonopoulos wins the Finney Freedom Prize
The Human Rights Foundation and Hal Finney's family awarded the Finney Freedom Prize for 2016 to 2020 to Andreas M. Antonopoulos, for his work explaining Bitcoin to millions. He gave half of the 1 BTC prize to Creative Commons.
MilestonesSourceHuman Rights Foundation, Weekly Financial Freedom Report #104 (15 Jan 2026; "Announced on January 10th")
Sunday 11 January294 days ago
Hal Finney tweets "Running bitcoin", 2009
17 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)
Monday 12 January293 days ago
The first bitcoin transaction, 2009
17 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)