Bitcoin calendar.
Halvings and network upgrades, the US releases that move markets, conferences, and the anniversaries of Bitcoin's history. Dates are in UTC.
Today
BTC Balkans
ConferencesSunday 1 November
A two-day, community-run Bitcoin conference for the Balkans, with keynotes, panels and workshops.
January 2021
| 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 | 20 | 21 | 22 | 23 | 24 |
| 25 | 26 | 27 | 28 | 29 | 30 | 31 |
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Events in January 2021
Sunday 3 January2128 days ago
The genesis block, 2009
12 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 January2123 days ago
Bitcoin v0.1 is released, 2009
12 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 January2120 days ago
Hal Finney tweets "Running bitcoin", 2009
12 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 January2119 days ago
The first bitcoin transaction, 2009
12 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)