Bitcoin's history.
On 31 October 2008, Satoshi Nakamoto emailed a nine-page paper to a cryptography mailing list. Everything that followed is here, from two pizzas bought for 10,000 BTC to the halving due in 2028, each with its source and, where it happened on-chain, its block.
2008 to 2012
Miners earned 50 BTC a block until block 210,000, on 28 November 2012.
- 18 Aug 200818 Aug 2008
bitcoin.org is registered
The domain bitcoin.org was registered, about ten weeks before the Bitcoin whitepaper was announced.
Milestones · 13:19 UTCSourceBitcoin.org, About bitcoin.org
- 20 Aug 200820 Aug 2008
Satoshi emails Adam Back
Satoshi Nakamoto emailed Adam Back, the author of the hashcash paper, to check how he was citing it, and shared a draft of the whitepaper, which he said "finds a new use for hash-based proof-of-work as a way to make e-cash work". Back replied the next day, pointing him to Wei Dai's b-money proposal. The emails became public in 2024, in the UK High Court case that found Craig Wright is not Satoshi.
MilestonesSourceCOPA v Wright [2024] EWHC 1198 (Ch), paras 23.2 and 661–665 (the emails of 20 and 21 August 2008)
- 22 Aug 200822 Aug 2008
Satoshi emails Wei Dai
After Adam Back pointed him to it, Satoshi Nakamoto emailed Wei Dai about Dai's b-money proposal. His paper, Satoshi wrote, "expands on your ideas into a complete working system", and he asked when b-money was published so he could cite it; the Bitcoin whitepaper lists it as its first reference. The draft he linked was then titled "Electronic Cash Without a Trusted Third Party".
MilestonesSourceGwern Branwen, the emails between Wei Dai and Satoshi Nakamoto (Satoshi's first sent Friday, August 22, 2008; first quoted by The Sunday Times in March 2014)
- 31 Oct 200831 Oct 2008
The Bitcoin whitepaper
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.
Milestones · 18:10 UTCSourceSatoshi Nakamoto Institute, "Bitcoin P2P e-cash paper" email (dated 31 Oct 2008, 18:10:00 UTC)What happened
- 3 Jan 20093 Jan 2009
The genesis block
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".
Milestones · 18:15 UTCSee block 0See the paymentSourcemempool.space, block 0 (timestamp 1231006505)What happened
- 8 Jan 20098 Jan 2009
Bitcoin v0.1 is released
Satoshi Nakamoto announced the first release of the Bitcoin software, a Windows-only program with open-source C++ code, on the Cryptography Mailing List.
Milestones · 19:27 UTCSourceCryptography Mailing List archive, "Bitcoin v0.1 released" (Thu Jan 8 14:27:40 EST 2009)
- 11 Jan 200911 Jan 2009
Hal Finney tweets "Running bitcoin"
Cryptographer Hal Finney posted "Running bitcoin" on Twitter, two days after block 1, the first block after the genesis block, was mined.
Milestones · 03:33 UTCSourceTwitter's oEmbed data for the tweet (dated January 11, 2009)
- 12 Jan 200912 Jan 2009
The first bitcoin transaction
Satoshi Nakamoto sent 10 bitcoin to Hal Finney in block 170, the first transaction that moved coins from one person to another.
Milestones · 03:30 UTCSee block 170See the paymentSourceHal Finney, "Bitcoin and me", bitcointalk, 19 March 2013 (archived copy)
- 11 Feb 200911 Feb 2009
Satoshi introduces Bitcoin on the P2P Foundation forum
Satoshi Nakamoto posted "Bitcoin open source implementation of P2P currency" on the P2P Foundation's forum, describing "a new open source P2P e-cash system" with "no central server or trusted parties". He argued that ordinary money depends on trusting central banks not to debase it and banks to hold it safely.
MilestonesSourceSatoshi Nakamoto Institute, "Bitcoin open source implementation of P2P currency" (11 Feb 2009, given as 22:27:00 UTC)
- 5 Oct 20095 Oct 2009
The first bitcoin exchange rate
NewLibertyStandard published an exchange rate of $1.00 = 1,309.03 BTC, the first known price for bitcoin, which valued one bitcoin at well under a tenth of a cent.
MilestonesSourceNewLibertyStandard, "2009 Exchange Rate" (archived 28 April 2010)
- 22 Nov 200922 Nov 2009
The Bitcoin forum opens
Satoshi Nakamoto opened a new Bitcoin forum and posted its welcome message. The forum continues today as bitcointalk.org.
Milestones · 18:04 UTCSourceSatoshi Nakamoto Institute, "Welcome to the new Bitcoin forum!" (22 Nov 2009, 18:04:28 UTC)
- 22 May 201022 May 2010
Bitcoin Pizza Day
Laszlo Hanyecz paid 10,000 BTC for two pizzas, one of the first known purchases made with bitcoin.
Milestones · 18:16 UTCSee block 57,043See the paymentSourceLaszlo Hanyecz, "Pizza for bitcoins?", bitcointalk (archived copy)What happened
- 11 Jun 201011 Jun 2010
The Bitcoin Faucet opens
Gavin Andresen opened the Bitcoin Faucet, a website that gave five bitcoins to each visitor so newcomers could try Bitcoin. By his own count it gave away more than 10,000 bitcoins before closing in 2012.
MilestonesSourceGavin Andresen, "Get 5 free bitcoins from freebitcoins.appspot.com" (Bitcointalk, 11 Jun 2010)
- 18 Jul 201018 Jul 2010
Mt. Gox opens as a bitcoin exchange
Jed McCaleb announced Mt. Gox on the Bitcoin Forum with the words "I just put up a new bitcoin exchange." It went on to become, for a time, the world's leading bitcoin exchange.
Markets · 01:57 UTCSourceBitcoin Forum, "New Bitcoin Exchange (mtgox.com)", first post by user mtgox (Wayback Machine copy)
- 20 Jul 201020 Jul 2010
Satoshi calls Bitcoin an implementation of b-money and bit gold
In a forum thread about a move to delete Wikipedia's article on Bitcoin, Satoshi Nakamoto wrote that "Bitcoin is an implementation of Wei Dai's b-money proposal", posted to the Cypherpunks mailing list in 1998, "and Nick Szabo's Bitgold proposal".
Milestones · 18:38 UTCSourceSatoshi Nakamoto Institute, "Re: They want to delete the Wikipedia article" (20 Jul 2010, 18:38:28 UTC)
- 15 Aug 201015 Aug 2010
The value overflow incident
A transaction in block 74,638 created about 184 billion bitcoin by exploiting a bug in how the software added up large amounts. Satoshi Nakamoto released a fix, Bitcoin 0.3.10, the same day, and the network replaced the bad block.
Network · Until 16 AugSee block 74,638SourceBitcoin Wiki, Value overflow incident
- 1 Nov 20101 Nov 2010
The orange Bitcoin logo is posted
A forum user called bitboy posted a white, tilted version of Satoshi Nakamoto's "B" symbol on an orange circle and put it in the public domain. It became the logo most people now know Bitcoin by.
Milestones · 03:40 UTCSourcebitboy, "More Bitcoin logos, buttons, and also some other graphics", bitcointalk (1 Nov 2010, 03:40:01; Wayback Machine copy)
- 4 Dec 20104 Dec 2010
Chris Double's mining pool finds a block
Block 95,420 was found by a mining pool that Chris Double ran with server software by a Bitcoin forum user called puddinpop, and its 50-bitcoin reward was split among 23 addresses in the block itself. Double's page calls it "the first public bitcoin mining pool". He shut it down on 17 December, after so many miners had left that another block would take too long.
Milestones · 05:04 UTCSee block 95,420SourceChris Double, Bitcoin Pooled Mining (lists blocks 95,420 and 97,017 and the shutdown on 17 Dec 2010)
- 5 Dec 20105 Dec 2010
Satoshi asks WikiLeaks not to use Bitcoin
Satoshi Nakamoto wrote on the Bitcoin forum, "I make this appeal to WikiLeaks not to try to use Bitcoin," warning that the attention could destroy the young project. Six days later he wrote that "WikiLeaks has kicked the hornet's nest, and the swarm is headed towards us."
Milestones · 09:08 UTCSourceSatoshi Nakamoto Institute, "Re: Wikileaks contact info?" (5 Dec 2010, 09:08:08 UTC)
- 12 Dec 201012 Dec 2010
Satoshi's last forum post
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).
Milestones · 18:22 UTCSourceSatoshi Nakamoto Institute, "Added some DoS limits, removed safe mode (0.3.19)" (12 Dec 2010, 18:22:33 UTC)
- 16 Dec 201016 Dec 2010
Slush's mining pool finds its first block
Marek Palatinus, known as slush, opened his mining pool to everyone just after midnight, and it found its first block, 97,834, that morning. The pool collected each block's reward in its own wallet and paid its miners from there. First called Bitcoin.cz Mining Pool, it is now Braiins Pool.
Milestones · 07:16 UTCSee block 97,834Sourceslush, "Re: Cooperative mining", Bitcoin Forum (16 Dec 2010, 00:02:15; Wayback Machine copy)
- 19 Dec 201019 Dec 2010
Gavin Andresen takes over running Bitcoin
"With Satoshi's blessing", Gavin Andresen began managing the Bitcoin project, with changes proposed as pull requests on GitHub and discussed before they were added.
MilestonesSourceGavin Andresen, "Development process straw-man" (Bitcointalk, 19 Dec 2010)
- 9 Feb 20119 Feb 2011
Bitcoin reaches $1
One bitcoin traded for $1.00 on Mt. Gox for the first time, reaching parity with the US dollar.
Markets · 19:54 UTCSourceBitcoin Wiki, 2011 timeline (9 Feb: "1 bitcoin trades for 1 US dollar on Mt. Gox")
- 23 Apr 201123 Apr 2011
Satoshi writes "I've moved on to other things"
In an email to developer Mike Hearn, Satoshi Nakamoto wrote "I've moved on to other things. It's in good hands with Gavin and everyone." It is one of the last messages known to have come from Bitcoin's creator.
MilestonesSourceMike Hearn's published emails with Satoshi Nakamoto, thread 5 (Sat, Apr 23, 2011)
- 14 Jun 201114 Jun 2011
WikiLeaks starts accepting bitcoin
WikiLeaks announced that it would take donations in bitcoin, after Visa, Mastercard and Bank of America had cut off donations to it and PayPal had frozen its funds. The first payments to its published address were confirmed in block 130,863 later that day.
MilestonesSourceForbes (Andy Greenberg), WikiLeaks Asks For Anonymous Bitcoin Donations (14 Jun 2011; Wayback Machine copy)
- 19 Jun 201119 Jun 2011
A hacked Mt. Gox account crashes the price to a cent
Someone used a compromised Mt. Gox administrator account to sell a huge number of bitcoins on the exchange, driving its price there from $17.50 to $0.01 within 30 minutes. Mt. Gox halted trading to roll back the suspect trades and reopened on 26 June; prices on other exchanges fell far less.
MarketsSourceMt. Gox, Clarification of Mt. Gox Compromised Accounts and Major Bitcoin Sell-Off (press release, 30 Jun 2011; Wayback Machine copy)
- 21 Nov 201121 Nov 2011
Bitcoin 0.5.0 brings the Bitcoin-Qt window
Bitcoin 0.5.0 replaced the program's window with "a completely new graphical interface that uses the Qt user interface toolkit", released as Bitcoin-Qt. Mara van der Laan had started it as a separate project in May 2011, and took over Bitcoin Core from Gavin Andresen in 2014.
NetworkSourceBitcoin.org, Bitcoin Core version 0.5.0 released (21 November 2011)
- 1 Mar 20121 Mar 2012
Bitcoins stolen in the Linode break-in
An intruder used a customer-service portal at Linode, a web host, to get into the accounts of eight of its customers, all connected with bitcoin, and moved bitcoins out of their servers. The losses included 3,094 BTC waiting to be paid out by Marek Palatinus's mining pool, which he covered from his own money; more than 10,000 from the trading site Bitcoinica, by its own count; and the few coins in Gavin Andresen's Bitcoin Faucet.
MarketsSee block 169,187See the paymentSourceslush, "Hacked Linode & coins stolen to 1NRy8GbX56MymBhDYM...", Bitcoin Forum (1 Mar 2012, with Gavin Andresen's reply on the Faucet; Wayback Machine copy)
- 1 Apr 20121 Apr 2012
Pay to script hash (P2SH) activates
Pay to script hash (P2SH, BIP 16) took effect from block 173,805, the first block timestamped after midnight UTC on 1 April 2012. It lets anyone pay to a short address starting with 3 that stands for spending rules of any complexity, such as needing several signatures, which the recipient reveals only when spending.
Network · 00:43 UTCSee block 173,805SourceBIP 16, Pay to Script Hash (rules apply to blocks with timestamps >= 1333238400, Apr 1 2012)
- 27 Sept 201227 Sept 2012
The Bitcoin Foundation launches
Gavin Andresen announced the Bitcoin Foundation, a non-profit "modeled on the Linux Foundation" that went on to pay some of Bitcoin's core developers.
MilestonesSourceGavin Andresen, "[ANN] Bitcoin Foundation" (Bitcointalk, 27 Sep 2012)
2012 to 2016
Miners earned 25 BTC a block until block 420,000, on 9 July 2016.
- 28 Nov 201228 Nov 2012
The first halving
At block 210,000 the reward for mining a block fell from 50 to 25 bitcoin, the first halving. The software halves the reward every 210,000 blocks, roughly every four years.
Network · 15:24 UTCSee block 210,000SourceBitcoin Core source, nSubsidyHalvingInterval = 210000
- 19 Feb 201319 Feb 2013
Bitcoin 0.8 keeps a set of unspent coins
Bitcoin 0.8.0 was released. Built on a change by Pieter Wuille, it checked new transactions against a database of only the unspent outputs, now called the UTXO set, instead of an index of every past transaction, which made it much faster. It also moved from Berkeley DB to LevelDB, which three weeks later let it accept a block that older versions rejected, splitting the chain.
NetworkSourceBitcoin.org, Bitcoin Core version 0.8.0 released (19 February 2013)
- 11 Mar 201311 Mar 2013
The March 2013 chain split
A large block at height 225,430 was accepted by Bitcoin 0.8 but rejected by older versions, splitting the blockchain in two. Large mining pools switched back to version 0.7 so the network reunited on the older versions' chain.
Network · Until 12 MarSee block 225,430SourceBitcoin.org, 11/12 March 2013 Chain Fork Information
- 18 Mar 201318 Mar 2013
US treats bitcoin exchanges as money transmitters
FinCEN, the US Treasury's financial-crimes unit, said businesses that exchange or administer convertible virtual currency, the category bitcoin falls in, are money transmitters. People who only use it to buy goods or services are not.
PolicySourceFinCEN guidance FIN-2013-G001
- 22 Aug 201322 Aug 2013
Gregory Maxwell describes CoinJoin
Gregory Maxwell described CoinJoin on the Bitcoin forum: a way for several people to combine their payments into one transaction, so that an outsider cannot tell which of them owns which output. He wrote that it "involves no changes to the Bitcoin protocol".
Milestones · 02:32 UTCSourcegmaxwell, "CoinJoin: Bitcoin privacy for the real world", Bitcoin Forum (22 Aug 2013, 02:32:31; Wayback Machine copy)
- 10 Sept 201310 Sept 2013
BIP 39 sets out recovery words
Marek Palatinus, Pavol Rusnák and Aaron Voisine created BIP 39, a standard for writing a wallet's backup as a list of 12 to 24 words, which "could be written on paper or spoken over the telephone".
NetworkSourceBIP 39, Mnemonic code for generating deterministic keys (Assigned: 2013-09-10)
- 2 Oct 20132 Oct 2013
FBI shuts down Silk Road
The FBI shut down Silk Road, a hidden online market for illegal drugs where buyers paid in bitcoin, and arrested Ross Ulbricht, who was later convicted of running it.
PolicySourceCNNMoney, 2 October 2013 (archived copy)
- 29 Oct 201329 Oct 2013
The first bitcoin ATM opens
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.
Milestones · 16:00 UTCSourceCBC News, World's first bitcoin ATM opens in Vancouver, 29 Oct 2013What happened
- 27 Nov 201327 Nov 2013
Bitcoin passes $1,000
Bitcoin traded at $1,000 on Mt. Gox, then the world's largest exchange for buying bitcoin with US dollars, for the first time.
Markets · 14:49 UTCSourceCoinDesk, Bitcoin Price Hits $1,000 After Doubling in 7 Days (27 Nov 2013)
- 5 Dec 20135 Dec 2013
China bars banks from bitcoin business
China's central bank and four other regulators barred banks and payment companies from handling bitcoin, calling it a virtual commodity rather than real money. Individuals could still trade it at their own risk.
PolicySourceText of the notice, Yin Fa [2013] No. 289 (Chinese legal database)
- 18 Dec 201318 Dec 2013
The "HODL" post
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.
Milestones · 10:03 UTCSourceGameKyuubi, "I AM HODLING", bitcointalk (archived copy)
- 7 Feb 20147 Feb 2014
Mt. Gox halts withdrawals
Mt. Gox stopped all bitcoin withdrawals, saying it needed to fix a technical problem. Trading on the exchange continued.
MarketsSourceCoinDesk, Mt. Gox Halts ALL Bitcoin Withdrawals, Price Drop Follows (7 Feb 2014)
- 28 Feb 201428 Feb 2014
Mt. Gox files for bankruptcy
Mt. Gox filed for bankruptcy protection in Tokyo, saying it had lost about 850,000 bitcoins, 750,000 of them belonging to customers.
MarketsSourceReuters via Business Standard, Mt. Gox in bankruptcy, says may have lost all its bitcoins to hackers (28 Feb 2014)What happened
- 25 Mar 201425 Mar 2014
IRS says bitcoin is property for US tax
The US tax agency said virtual currency such as bitcoin is treated as property, not currency, for federal tax, so the general tax rules for property apply.
PolicySourceIRS news release IR-2014-36
- 7 Apr 20147 Apr 2014
Mara van der Laan takes over Bitcoin Core
Gavin Andresen announced that Mara van der Laan, who had first joined Bitcoin by rebuilding its user interface, would take over from him as "Bitcoin Core Maintainer" so that he could focus on the protocol. Andresen had yet to meet his successor in person.
MilestonesSourceGavin Andresen, "Bitcoin Core Maintainer: Wladimir van der Laan", Bitcoin Foundation (7 Apr 2014; Wayback Machine copy)
- 29 Jul 201429 Jul 2014
The Trezor hardware wallet launches
The Trezor Model One was launched: a small, single-purpose computer for keeping a wallet's private keys in isolation. Trezor calls it the first hardware wallet. Marek Palatinus (slush) and Pavol Rusnák (stick) began it as a hobby project.
MilestonesSourceTrezor, A decade of pioneering: 10 years since Trezor's first hardware wallet revolution (29 Jul 2024)
- 28 Aug 201428 Aug 2014
Hal Finney dies
Hal Finney, the cryptographer who received the first bitcoin transaction from Satoshi Nakamoto, died aged 58, five years after he was diagnosed with ALS (motor neurone disease). As he had arranged, his body was cryopreserved by the Alcor Life Extension Foundation in Scottsdale, Arizona.
MilestonesSourceAlcor Life Extension Foundation, Case Summary: Hal Finney (A-1436), now hosted at cryonicsarchive.org
- 22 Oct 201422 Oct 2014
The sidechains paper
Adam Back, Gregory Maxwell, Pieter Wuille, Luke Dashjr and five other developers published "Enabling Blockchain Innovations with Pegged Sidechains". It proposed moving bitcoin onto separate blockchains with new features and back again, with any fault in a sidechain confined to that sidechain.
MilestonesSourceAdam Back and others, "Enabling Blockchain Innovations with Pegged Sidechains" (dated 2014-10-22)
- 29 May 201529 May 2015
Ross Ulbricht is sentenced to life in prison
Judge Katherine B. Forrest sentenced Ross Ulbricht to life in prison for running Silk Road, the hidden online market for illegal drugs where buyers paid in bitcoin, and ordered him to forfeit $183,961,921. A jury had convicted him of seven offences in February. President Trump pardoned him in January 2025.
PolicySourceUS Attorney SDNY press release on sentencing, 29 May 2015 (archived copy)
- 24 Jun 201524 Jun 2015
New York's BitLicense takes effect
New York's BitLicense came into force. Firms now needed a licence from the state's financial regulator before running a virtual currency business in New York.
PolicySourceNY Department of Financial Services, virtual currency businesses
- 4 Jul 20154 Jul 2015
The July 2015 chain split
Just after the BIP 66 upgrade took effect, a small miner produced an invalid block at height 363,731, and large pools that were building on new blocks without checking them first ("SPV mining") added five more blocks on top. The valid chain overtook the six invalid blocks about an hour and a half later, and lightweight wallets were advised to wait for extra confirmations.
NetworkSee block 363,731SourceBitcoin.org, Some miners generating invalid blocks (alert of 4 July 2015, all times UTC)
- 15 Aug 201515 Aug 2015
Bitcoin XT is released
Mike Hearn and Gavin Andresen released Bitcoin XT, a version of Bitcoin's software that would raise the block size limit to 8 MB under BIP 101 once three quarters of recent blocks supported it. It never reached that level of support.
NetworkSourceMike Hearn, "Why is Bitcoin forking?" (15 Aug 2015, archived)
- 17 Sept 201517 Sept 2015
US regulator finds bitcoin is a commodity
The Commodity Futures Trading Commission (CFTC), a US markets regulator, found for the first time that bitcoin and other virtual currencies are commodities.
PolicySourceCFTC press release 7231-15
- 7 Dec 20157 Dec 2015
SegWit becomes the plan for more capacity
As the Scaling Bitcoin workshop in Hong Kong ended, Gregory Maxwell set out his plan for raising Bitcoin's capacity on the developers' mailing list. He backed Segregated Witness, which Pieter Wuille had presented there as a soft fork that handles signatures separately and so "takes them outside the scope of the current blocksize limit".
Network · 22:02 UTCSourceGregory Maxwell, "Capacity increases for the Bitcoin system.", bitcoin-dev mailing list (7 Dec 2015, 22:02:17 UTC)
- 14 Jan 201614 Jan 2016
The Lightning Network paper
Joseph Poon and Thaddeus Dryja's paper "The Bitcoin Lightning Network: Scalable Off-Chain Instant Payments" proposed a network of payment channels, which let two people pay each other many times while settling on the blockchain only occasionally.
MilestonesSourceThe Lightning Network paper, draft version 0.5.9.2, dated January 14, 2016
- 23 Feb 201623 Feb 2016
Bitcoin Core 0.12 checks signatures with libsecp256k1
Bitcoin Core 0.12.0 began checking transaction signatures with libsecp256k1 instead of OpenSSL, through a change by Pieter Wuille. The release notes said signature checks became over five times faster on x86_64 processors, and new blocks took less than half as long to validate.
NetworkSourceBitcoin Core 0.12.0 release notes (published February 23, 2016; change #6954 by Pieter Wuille)
- 2 May 20162 May 2016
Craig Wright claims to be Satoshi Nakamoto
Craig Wright publicly claimed to be Bitcoin's creator, and Gavin Andresen wrote the same day that he believed him. Other experts doubted the evidence; in 2024 a UK court ruled that Wright is not Satoshi.
PolicySourceGavin Andresen, "Satoshi" (2 May 2016, archived)
- 4 Jul 20164 Jul 2016
Relative timelocks (CSV) activate
A soft fork bundling BIPs 68, 112 and 113 took effect at block 419,328. Its new CHECKSEQUENCEVERIFY rule lets coins be locked until a set time after they were received, a building block for payment channels such as the Lightning Network.
Network · 23:16 UTCSee block 419,328SourceBitcoin Core source, CSVHeight = 419328 with the block hash
2016 to 2020
Miners earned 12.5 BTC a block until block 630,000, on 11 May 2020.
- 9 Jul 20169 Jul 2016
The second halving
At block 420,000 the reward for mining a block fell from 25 to 12.5 bitcoin, the second halving.
Network · 16:46 UTCSee block 420,000SourceBitcoin Core source, nSubsidyHalvingInterval = 210000
- 2 Aug 20162 Aug 2016
Bitfinex is hacked
Hackers stole 119,756 bitcoin, then worth about $72 million, from customer accounts at Bitfinex, a Hong Kong-based exchange, which halted trading. Bitfinex then spread the loss across all its customers, cutting every balance by about 36% and giving them tokens as credit for what they had lost.
MarketsSourceReuters, Bitcoin worth $72 million stolen from Bitfinex exchange in Hong Kong, 3 Aug 2016 (Wayback Machine copy)
- 1 Apr 20171 Apr 2017
Japan's law on crypto exchanges takes effect
Japan's amended Payment Services Act came into force. From then on, only registered businesses could run a virtual currency exchange, a service that exchanges currencies such as bitcoin for money or for each other.
PolicySourceFinancial Services Agency, registration screening details (PDF)
- 1 Aug 20171 Aug 2017
Bitcoin Cash splits off
Bitcoin split in two when nodes following new rules, under the name Bitcoin Cash, accepted a block larger than Bitcoin's 1 MB limit. Anyone holding bitcoin before the split held the same amount of Bitcoin Cash.
Network · 18:12 UTCSee block 478,558SourceBitcoin Cash UAHF technical specification (activation time 1501590000 = 1 Aug 2017 12:20 UTC; 8 MB)
- 1 Aug 20171 Aug 2017
The user-activated soft fork (BIP 148) takes effect
BIP 148, the "user-activated soft fork" (UASF), took effect at block 478,484: nodes running it would reject any block that did not signal support for SegWit. Miners were already signalling after a compromise proposal, BIP 91, so no split followed from it.
Network · 00:49 UTCSee block 478,484SourceBIP 148, Mandatory activation of segwit deployment (from midnight 1 August 2017 UTC)
- 9 Aug 20179 Aug 2017
SegWit locks in
SegWit locked in at block 479,808 after every one of the 2,016 blocks in the previous two-week signalling period had signalled support, more than the 95% needed. The upgrade took effect two weeks later, at block 481,824.
Network · 12:36 UTCSee block 479,808SourceCoinDesk, A New SegWit Lock-In Period Has Started and All Mining Pools Are Signaling (27 Jul 2017)
- 24 Aug 201724 Aug 2017
SegWit activates
Segregated Witness (SegWit) took effect at block 481,824. It moves signatures into a separate part of the block, which fixes transaction malleability (the ability to change a transaction's ID before it confirms) and raises block capacity.
Network · 01:57 UTCSee block 481,824SourceBitcoin Core source, SegwitHeight = 481824 with the block hash
- 8 Nov 20178 Nov 2017
SegWit2x is called off
The backers of SegWit2x, a planned hard fork (a rule change that older software rejects) to double Bitcoin's block size, called it off about a week before it was due, saying they had not built enough consensus.
NetworkSourceTechCrunch, "SegWit2x backers cancel plans for bitcoin hard fork" (8 Nov 2017)
- 29 Nov 201729 Nov 2017
Bitcoin passes $10,000
Bitcoin rose above $10,000 for the first time on CoinDesk's Bitcoin Price Index.
MarketsSourceCoinDesk, It's Official: Bitcoin's Price Makes History Passing $10k (29 Nov 2017)
- 10 Dec 201710 Dec 2017
Bitcoin futures start trading
Cboe Futures Exchange began trading bitcoin futures, contracts to buy or sell bitcoin at a set price on a future date, settled in cash. CNBC called them the first bitcoin futures on an established exchange.
Markets · 23:00 UTCSourceCboe press release, Cboe Bitcoin Futures Open For Trading (10 Dec 2017, reprint)
- 17 Dec 201717 Dec 2017
Bitcoin peaks near $20,000
Bitcoin reached $19,783.21 on CoinDesk's Bitcoin Price Index, the high point of its 2017 rally.
MarketsSourceCoinDesk, From $900 to $20,000: Bitcoin's Historic 2017 Price Run Revisited (29 Dec 2017)
- 17 Dec 201717 Dec 2017
CME starts trading bitcoin futures
CME, the world's largest futures exchange, began trading bitcoin futures, a week after Cboe. Each contract covered five bitcoin and was settled in cash against a once-a-day bitcoin reference price, so no coins changed hands.
Markets · 23:00 UTCSourceCME Group press release, CME Group Self-Certifies Bitcoin Futures to Launch Dec. 18, 1 Dec 2017 (Mondo Visione reprint)
- 23 Jan 201823 Jan 2018
Gregory Maxwell proposes Taproot
Gregory Maxwell proposed Taproot on the bitcoin-dev mailing list: a design that lets coins with complex spending conditions, when everyone involved agrees, be spent in a way "indistinguishable from a normal one-party signature". It activated in November 2021.
Network · 00:30 UTCSourceGregory Maxwell, "Taproot: Privacy preserving switchable scripting", bitcoin-dev mailing list (23 Jan 2018, 00:30:06 UTC)What happened
- 15 Mar 201815 Mar 2018
Lightning comes to Bitcoin's main network
Elizabeth Stark's company Lightning Labs released lnd 0.4-beta, the first version of its Lightning Network software enabled to run on Bitcoin's main network with real money.
Milestones · 14:59 UTCSourceGitHub, lnd 0.4-beta release notes (published 2018-03-15T14:59:39Z)
- 6 Apr 20186 Apr 2018
India's central bank cuts crypto off from banks
The Reserve Bank of India barred the banks and other firms it regulates from dealing in virtual currencies or serving anyone who does, and gave them three months to end existing relationships.
PolicySourceReserve Bank of India circular RBI/2017-18/154
- 22 Jun 201822 Jun 2018
Mt. Gox moves from bankruptcy to civil rehabilitation
At the request of some creditors, the Tokyo District Court put Mt. Gox into civil rehabilitation, which stopped its bankruptcy. In bankruptcy, customers' claims to bitcoin would have been turned into money claims valued in 2014; in rehabilitation they stayed claims to bitcoin.
Policy · 08:00 UTCSourceMt. Gox Rehabilitation Trustee Nobuaki Kobayashi, Announcement of Commencement of Civil Rehabilitation Proceedings (order issued at 5:00 p.m. Japan time on 22 June 2018; with Q&A, PDF)What happened
- 18 Sept 201818 Sept 2018
Inflation bug fixed in Bitcoin Core
Bitcoin Core released version 0.16.3 to fix a bug (CVE-2018-17144) that could have let a miner create extra bitcoin by spending the same coins twice inside one block.
Network · Until 20 SeptSourceBitcoin Core, Disclosure of CVE-2018-17144 (20 Sep 2018)
- 27 Sept 201827 Sept 2018
Blockstream's Liquid sidechain launches
Liquid, a sidechain run by Blockstream so that exchanges and other businesses can move bitcoin between each other quickly and confidentially, produced its first block, with 23 companies as members. Blockstream called it the first production Bitcoin sidechain.
Milestones · 01:29 UTCSourceBlockstream, The Liquid Network is now live ("first block generated on September 27, 2018 at 1:29 UTC")
- 31 Jan 201931 Jan 2019
QuadrigaCX seeks creditor protection
QuadrigaCX, one of Canada's largest crypto exchanges, asked a Nova Scotia court to halt lawsuits against it, saying it could not reach most customers' funds after its founder, Gerald Cotten, died in December 2018. A 2020 review by Ontario Securities Commission staff concluded that clients lost at least C$169 million, mostly through Cotten's fraud rather than coins locked away by his death.
Markets · Until 5 FebSourceCBC News, Canadian cryptocurrency exchange QuadrigaCX seeks creditor protection after founder's death, 4 Feb 2019
- 15 Mar 201915 Mar 2019
Mark Karpelès is convicted of tampering with Mt. Gox's data
A Tokyo court found Mark Karpelès, who ran Mt. Gox, guilty of tampering with its data and acquitted him of embezzling from client accounts. It sentenced him to two and a half years in prison, suspended for four years. Japan's Supreme Court dismissed his last appeal on 27 January 2021, making the conviction final.
PolicySourceAFP via phys.org, MtGox 'bitcoin baron' gets suspended sentence for data tampering (15 Mar 2019; Wayback Machine copy)What happened
- 12 Mar 202012 Mar 2020
Black Thursday
Bitcoin fell nearly 39% in one day on CoinDesk's Bitcoin Price Index as markets sold off over the spread of the coronavirus.
Markets · Until 13 MarSourceCoinDesk, Bitcoin Price Briefly Dips to 12-Month Low in Overnight Trading (13 Mar 2020)What happened
2020 to 2024
Miners earned 6.25 BTC a block until block 840,000, on 20 April 2024.
- 11 May 202011 May 2020
The third halving
At block 630,000 the reward for mining a block fell from 12.5 to 6.25 bitcoin, the third halving.
Network · 19:23 UTCSee block 630,000SourceBitcoin Core source, nSubsidyHalvingInterval = 210000
- 11 Aug 202011 Aug 2020
MicroStrategy buys bitcoin for its treasury
MicroStrategy, a Nasdaq-listed software company, said it had bought 21,454 bitcoins for about $250 million and made bitcoin its primary treasury reserve asset, the main asset in which it holds its spare cash.
MarketsSourceMicroStrategy press release, MicroStrategy Adopts Bitcoin as Primary Treasury Reserve Asset (SEC Form 8-K, Exhibit 99.1)
- 21 Oct 202021 Oct 2020
PayPal opens bitcoin buying to US customers
PayPal said its US customers could buy, hold and sell bitcoin and three other cryptocurrencies (Ethereum, Bitcoin Cash and Litecoin) in their PayPal accounts, with access rolling out over the following weeks. The service ran through Paxos Trust Company, a regulated crypto firm.
MilestonesSourcePayPal newsroom, PayPal Launches New Service Enabling Users to Buy, Hold and Sell Cryptocurrency, 21 Oct 2020
- 5 Nov 20205 Nov 2020
US files to forfeit 69,370 bitcoins taken from Silk Road
US prosecutors in San Francisco filed to forfeit 69,370 bitcoins seized two days earlier. They said a hacker they called "Individual X" had taken the coins from Silk Road in 2012 and 2013 and never spent them.
PolicySourceUS Attorney, Northern District of California, United States Files A Civil Action To Forfeit Cryptocurrency Valued At Over One Billion U.S. Dollars (5 Nov 2020; Wayback Machine copy)
- 16 Dec 202016 Dec 2020
Bitcoin passes $20,000
Bitcoin rose above $20,000 for the first time on CoinDesk's Bitcoin Price Index during early US trading hours, and was trading above $21,000 by 8:48 a.m. New York time.
MarketsSourceCoinDesk, Bitcoin Tops $21K, Blowing Past $20K Record (16 Dec 2020)
- 8 Feb 20218 Feb 2021
Tesla discloses $1.5 billion in bitcoin
Tesla said in its annual report to the SEC (a 10-K) that it had invested $1.50 billion in bitcoin, and that it expected to start accepting bitcoin as payment for its products.
Markets · 12:27 UTCSourceTesla, Form 10-K for 2020 (sec.gov)
- 16 Feb 202116 Feb 2021
Bitcoin passes $50,000
Bitcoin passed $50,000 for the first time during early New York trading, reaching a record $50,584.85 on CoinDesk's Bitcoin Price Index before slipping back.
MarketsSourceCoinDesk, After Breaching $50K, Bitcoin Gives Up Earlier Gains (16 Feb 2021)
- 14 Apr 202114 Apr 2021
Coinbase lists on Nasdaq
Coinbase, a US cryptocurrency exchange, began trading on Nasdaq under the ticker COIN through a direct listing, in which existing shareholders sell shares on the market instead of the company running a traditional public offering.
MarketsSourceCNBC, Coinbase closes at $328.28 per share in Nasdaq debut (14 Apr 2021)
- 12 May 202112 May 2021
Tesla stops taking bitcoin
Elon Musk said on Twitter that Tesla would stop accepting bitcoin for car purchases, less than two months after it started, citing the growing use of fossil fuels, especially coal, to mine bitcoin. He said Tesla would keep the bitcoin it held and accept it again once mining moved to more sustainable energy.
Markets · 22:06 UTCSourceX, Elon Musk, "Tesla & Bitcoin", 12 May 2021
- 21 May 202121 May 2021
China's cabinet calls for a bitcoin mining crackdown
A State Council committee on financial stability, chaired by Vice Premier Liu He, called for a crackdown on bitcoin mining and trading.
PolicySourceChinese government website, 21 May 2021 (Chinese)
- 9 Jun 20219 Jun 2021
El Salvador passes its Bitcoin Law
El Salvador's Legislative Assembly voted 62 of 84 to make bitcoin legal tender, the first country to do so. The vote came late on 8 June in El Salvador, which was early on 9 June in UTC; President Nayib Bukele posted the result just after midnight there. The US dollar stayed legal tender too.
PolicySourceAl Jazeera, 9 June 2021 (the vote "late on Tuesday", 8 June)
- 12 Jun 202112 Jun 2021
Taproot locks in
Block 687,284 was the 1,815th in its two-week period to signal for Taproot, reaching the 90% needed under the "Speedy Trial" activation rules and locking in the upgrade. It took effect five months later, at block 709,632.
Network · 12:04 UTCSee block 687,284SourceBitcoin Core 0.21.1 release notes, Taproot Soft Fork (Speedy Trial, 90% of a 2,016-block period)
- 3 Jul 20213 Jul 2021
Record fall in mining difficulty
Bitcoin's mining difficulty fell 27.9% at block 689,472, the largest downward adjustment in its history, after China's crackdown knocked about half of the network's mining power offline.
Network · 06:34 UTCSee block 689,472SourceHashrate Index, "Bitcoin Difficulty Adjustment Experiences 28% Drop, Largest Ever As Miners Exit China"
- 7 Sept 20217 Sept 2021
Bitcoin becomes legal tender in El Salvador
El Salvador's Bitcoin Law came into force, making bitcoin legal tender, money that businesses must accept, alongside the US dollar. The government launched its Chivo wallet the same day.
PolicySourceThe Block, 7 September 2021
- 24 Sept 202124 Sept 2021
China declares crypto trading illegal
China's central bank said all business involving cryptocurrencies, including trading and exchange services, is illegal financial activity, and that foreign exchanges serving people in mainland China are breaking the law.
PolicySourceText of notice Yin Fa [2021] No. 237 on the Chinese government website (Chinese)
- 9 Nov 20219 Nov 2021
Agents find James Zhong's stolen Silk Road bitcoins
Searching James Zhong's house in Gainesville, Georgia, US agents found about 50,491 bitcoins he had taken from Silk Road in 2012 by tricking its withdrawal system, held in an underground safe and on a small computer hidden in a popcorn tin. Zhong pleaded guilty to wire fraud and in April 2023 was sentenced to a year and a day in prison.
PolicySourceIRS Criminal Investigation, Silk Road dark web fraud defendant sentenced following seizure and forfeiture of over $3.4 billion in cryptocurrency (14 Apr 2023)
- 10 Nov 202110 Nov 2021
Bitcoin's November 2021 record
Bitcoin reached a record of about $68,950, according to CoinDesk, soon after US data showed consumer prices up 6.2% on a year earlier, the fastest rise since 1990.
MarketsSourceCoinDesk, Bitcoin Jumps to New All-Time High as Inflation Spikes to 6.2% in October (10 Nov 2021)
- 14 Nov 202114 Nov 2021
Taproot activates
The Taproot upgrade took effect at block 709,632. It added Schnorr signatures and a new kind of output that reveals less about complex spending conditions, making them cheaper and more private.
Network · 05:15 UTCSee block 709,632SourceBIP 341, Deployment section ("The deployment did activate at height 709632")What happened
- 21 Nov 202121 Nov 2021
Bukele announces Bitcoin City
On the night of 20 November, El Salvador time, President Nayib Bukele announced plans for a "Bitcoin City" near the Conchagua volcano, powered by its geothermal energy, with value-added tax as its only tax. He said a bond to fund it would be offered in 2022, entirely in bitcoin.
PolicySourceAP via NBC News, A Bitcoin city? That's the plan in El Salvador (22 Nov 2021; "Saturday night")
- 8 Feb 20228 Feb 2022
US seizes 94,000 bitcoin stolen from Bitfinex
The US Justice Department announced the arrest of Ilya Lichtenstein and Heather Morgan in Manhattan, charged with conspiring to launder bitcoin stolen from Bitfinex in 2016, and the seizure of more than 94,000 of the stolen coins, then worth over $3.6 billion. Both later pleaded guilty to conspiracy to commit money laundering.
PolicySourceUS Justice Department, Two Arrested for Alleged Conspiracy to Launder $4.5 Billion in Stolen Cryptocurrency, 8 Feb 2022 (Wayback Machine copy)
- 27 Apr 202227 Apr 2022
Central African Republic adopts bitcoin as legal tender
The Central African Republic's presidency said the country had adopted bitcoin as legal tender alongside the CFA franc, the second country to do so after El Salvador.
PolicySourceAFP report via TechXplore, 27 April 2022
- 9 May 20229 May 2022
Terra's UST stablecoin collapses
TerraUSD (UST), a stablecoin meant to stay worth $1, lost its peg and collapsed within days, and its sister token LUNA fell to almost zero. UST relied on an algorithm linked to LUNA to hold its value, rather than reserves of cash or bonds.
Markets · Until 13 MaySourceCoinDesk, UST Stablecoin Loses Dollar Peg for Second Time in 48 Hours (9 May 2022)
- 13 Jun 202213 Jun 2022
Celsius freezes customer withdrawals
Celsius Network, one of the biggest crypto lenders, paused all withdrawals, swaps and transfers between customer accounts, citing "extreme market conditions". It said the pause would put it in a better position to honour withdrawals over time.
Markets · 01:59 UTCSourceCelsius, A Memo to the Celsius Community, 13 Jun 2022 UTC (Medium, Wayback Machine copy)
- 27 Jun 202227 Jun 2022
Three Arrows Capital is ordered into liquidation
A British Virgin Islands court ordered Three Arrows Capital, a Singapore-based crypto hedge fund, into liquidation, a court-run winding-up in which appointed liquidators collect its assets to repay creditors, after falling crypto prices exposed a cash crisis. On 1 July its representatives asked a New York bankruptcy court to shield its US assets from creditors under Chapter 15, the US law for foreign insolvencies.
Markets · Until 1 JulSourceThree Arrows Capital, Ltd. (In Liquidation), official liquidation website run by the joint liquidators at Teneo
- 8 Nov 20228 Nov 2022
FTX halts withdrawals and files for bankruptcy
The crypto exchange FTX paused all customer withdrawals on 8 November and filed for Chapter 11 bankruptcy in Delaware on 11 November. Chapter 11 is the US process that shields a company from creditors while it reorganises or sells its assets.
Markets · Until 11 NovSourceSEC complaint, SEC v. Samuel Bankman-Fried, filed 13 Dec 2022 (sec.gov)What happened
- 17 Nov 202217 Nov 2022
El Salvador starts buying a bitcoin a day
Late on 16 November in El Salvador, President Nayib Bukele posted: "We are buying one #Bitcoin every day starting tomorrow."
Policy · 05:28 UTCSourceX, Nayib Bukele (17 Nov 2022, 05:28 UTC)
- 20 Jan 202320 Jan 2023
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)
- 3 Feb 20233 Feb 2023
Tulip Trading's claim against Bitcoin's developers is sent to trial
England's Court of Appeal let Tulip Trading, a company associated with Craig Wright, take its claim against Bitcoin's developers, among them Mara van der Laan, Pieter Wuille and Gregory Maxwell, to trial. Tulip argued that they owed it a duty to help recover bitcoin whose keys, it said, had been lost in a hack; the court found only that this raised "a serious issue to be tried". Tulip discontinued the claim on 16 April 2024, a month after the High Court ruled that Wright is not Satoshi.
PolicySourceTulip Trading Ltd v van der Laan and others [2023] EWCA Civ 83 (3 Feb 2023)
- 13 Mar 202313 Mar 2023
A court stops Lightning Labs using the name Taro
A US federal judge in Northern California temporarily barred Lightning Labs from calling its protocol for creating assets on Bitcoin "Taro", finding that Tari Labs, maker of a protocol called Tari, was likely to succeed in its trademark claim. Lightning Labs renamed the protocol Taproot Assets, and the case was dismissed in August 2023 after a confidential settlement.
PolicySourceTari Labs v. Lightning Labs, No. 3:22-cv-07789-WHO (N.D. Cal.), Order Entering Temporary Restraining Order (13 Mar 2023)
- 15 Jun 202315 Jun 2023
BlackRock files for a spot bitcoin ETF
BlackRock asked the US Securities and Exchange Commission to register shares in the iShares Bitcoin Trust, a proposed exchange-traded fund (ETF) that would hold bitcoin itself and trade on Nasdaq like a share. Coinbase was named to look after the trust's bitcoin.
MarketsSourceSEC EDGAR, iShares Bitcoin Trust, Form S-1 filing index (filed 15 June 2023)
- 29 Jun 202329 Jun 2023
EU crypto rules (MiCA) enter into force
The EU's Markets in Crypto-Assets Regulation (MiCA), one set of rules for crypto issuers and service providers across the EU, entered into force. Most of it applied from 30 December 2024.
PolicySourceEUR-Lex, Regulation (EU) 2023/1114
- 29 Aug 202329 Aug 2023
Court rules for Grayscale against the SEC
A US appeals court ruled that the SEC's rejection of Grayscale's plan to turn its bitcoin trust into a spot bitcoin ETF, a fund holding bitcoin itself, was "arbitrary and capricious", because the SEC had approved similar bitcoin futures funds without explaining the difference. The court cancelled the SEC's order.
PolicySourceUS Court of Appeals for the D.C. Circuit, Grayscale Investments, LLC v. SEC, No. 22-1142, opinion (decided 29 August 2023)
- 18 Oct 202318 Oct 2023
Taproot Assets goes live on Bitcoin
Lightning Labs released an early version of Taproot Assets for Bitcoin's main network: a protocol for issuing other assets on the bitcoin blockchain, such as stablecoins, tokens meant to keep a steady value, usually one US dollar. It worked on-chain only, "with Lightning support coming soon".
MilestonesSourceLightning Labs, Taproot Assets on Mainnet: A New Era for Bitcoin and Beyond (18 Oct 2023)
- 21 Nov 202321 Nov 2023
Binance and its founder plead guilty in the US
Binance, the world's largest crypto exchange, pleaded guilty to breaking US anti-money-laundering and sanctions laws and to running an unlicensed money-transmitting business, and agreed to pay about $4.3 billion. Its founder, Changpeng Zhao, pleaded guilty to failing to keep an effective anti-money-laundering programme and stepped down as chief executive.
PolicySourceUS Department of Justice, Binance and CEO Plead Guilty to Federal Charges in $4B Resolution (21 Nov 2023; Internet Archive copy)
- 10 Jan 202410 Jan 2024
SEC approves the first US spot bitcoin ETFs
The US Securities and Exchange Commission approved 11 spot bitcoin exchange-traded products, funds that hold bitcoin and whose shares trade on stock exchanges, for listing on three US exchanges.
PolicySourceSEC Chair Gensler, statement of 10 January 2024
- 11 Jan 202411 Jan 2024
First US spot bitcoin ETFs trade
The first US spot bitcoin exchange-traded funds (ETFs), funds that hold bitcoin and trade on stock exchanges like shares, began trading, a day after the SEC approved them.
MarketsSourceSEC, Statement on the Approval of Spot Bitcoin Exchange-Traded Products, Chair Gary Gensler (10 Jan 2024)What happened
- 5 Mar 20245 Mar 2024
Bitcoin passes its 2021 record
Bitcoin set its first record high since November 2021, rising above $69,000 on Coinbase.
MarketsSourceCoinDesk, Bitcoin Soars to New All-Time High Above $69K (5 Mar 2024)
- 14 Mar 202414 Mar 2024
UK court rules Craig Wright is not Satoshi Nakamoto
At the end of a trial brought by the Crypto Open Patent Alliance (COPA), Mr Justice Mellor of England's High Court declared that Craig Wright is not the author of the Bitcoin whitepaper, is not the person who used the name Satoshi Nakamoto from 2008 to 2011, and did not create Bitcoin or write its first software. He said the evidence was overwhelming and gave his full written reasons on 20 May 2024, in which he wrote that, page for page, a witness statement by the Bitcoin developer Pieter Wuille "turned out to be the most significant document in this Trial".
PolicySourceCourts and Tribunals Judiciary, COPA v Wright, judgment of Mr Justice Mellor, [2024] EWHC 1198 (Ch) (20 May 2024; Pieter Wuille's evidence at paras 276–279)
- 16 Apr 202416 Apr 2024
Bitcoin Core 27.0 encrypts connections by default
Bitcoin Core 27.0 turned on BIP 324 by default, so two nodes that both support it encrypt the connection between them. BIP 324, co-written by Pieter Wuille, makes it harder for an eavesdropper to tell where a transaction came from.
NetworkSourceGitHub, Bitcoin Core 27.0 release (published 2024-04-16T20:16:23Z)
2024 to now
Miners earn 3.125 BTC a block until block 1,050,000, expected around July 2028.
- 20 Apr 202420 Apr 2024
The fourth halving
At block 840,000 the reward for mining a block fell from 6.25 to 3.125 bitcoin, the fourth halving.
Network · 00:09 UTCSee block 840,000SourceBitcoin Core source, nSubsidyHalvingInterval = 210000
- 20 Apr 202420 Apr 2024
Runes tokens launch at the halving
Runes, Casey Rodarmor's system for creating and trading tokens on Bitcoin, went live at block 840,000, the fourth halving block. The rush to create the first tokens pushed the average transaction fee that day to a record $127.97.
Milestones · 00:09 UTCSee block 840,000Sourceord source, first_rune_height = 4 × 210,000 on mainnet
- 19 Jun 202419 Jun 2024
German state of Saxony sells about 50,000 bitcoins
The German state of Saxony sold about 49,858 bitcoins that a suspect in the Movie2k film-piracy case had handed to the authorities, raising about €2.64 billion. Prosecutors said the law required an emergency sale because bitcoin's price swings threatened the coins' value while the criminal case went on.
Markets · Until 12 JulSourceGeneralstaatsanwaltschaft Dresden (Saxony's chief public prosecutor), Notveräußerung von fast 50.000 Bitcoins abgeschlossen, press release (16 July 2024, PDF, German)
- 5 Jul 20245 Jul 2024
Mt. Gox starts repaying creditors in bitcoin
The trustee of Mt. Gox, the exchange that collapsed in 2014, said he had started repaying some of its creditors in bitcoin and bitcoin cash through designated crypto exchanges. Others were to be paid once their accounts and the exchanges' arrangements were confirmed.
MarketsSourceMt. Gox Rehabilitation Trustee Nobuaki Kobayashi, Notice regarding Repayment in Bitcoin and Bitcoin Cash (5 July 2024, PDF)
- 23 Jul 202423 Jul 2024
Taproot Assets come to the Lightning Network
Lightning Labs released a version of Taproot Assets that sends assets such as stablecoins over the Lightning Network. In the company's words, "assets route through bitcoin, serving as a global routing currency".
MilestonesSourceLightning Labs, Taproot Assets on Lightning (23 Jul 2024)
- 27 Jul 202427 Jul 2024
Trump promises a national bitcoin stockpile
Speaking at the Bitcoin 2024 conference in Nashville as the Republican presidential candidate, Donald Trump said that if elected he would keep all the bitcoin the US government holds or acquires as "the core of the strategic national bitcoin stockpile". He also said he would fire Gary Gensler, chair of the Securities and Exchange Commission, on his first day.
PolicySourceCoinDesk, In Donald Trump's Own Words: a Partial Transcript of His Bitcoin 2024 Speech (27 July 2024)
- 5 Dec 20245 Dec 2024
Bitcoin passes $100,000
Bitcoin passed $100,000 for the first time in the early hours of 5 December UTC, which was the evening of 4 December in the US.
MarketsSourceCoinDesk, Bitcoin at $100K: The Financial World Reacts (5 Dec 2024)
- 18 Dec 202418 Dec 2024
El Salvador agrees an IMF loan that scales back bitcoin
IMF staff and El Salvador's government reached a staff-level agreement on a 40-month loan of about $1.4 billion. Under it, accepting bitcoin would become voluntary for businesses, taxes would be paid only in US dollars, and the government's bitcoin dealings, purchases and part in the Chivo wallet would be cut back.
PolicySourceIMF press release 24/485, IMF Reaches Staff-Level Agreement with El Salvador on an Extended Fund Facility Arrangement (18 Dec 2024; Wayback Machine copy)
- 10 Jan 202510 Jan 2025
Pieter Wuille and Gregory Maxwell win the Finney Freedom Prize
The Human Rights Foundation and Hal Finney's family awarded the Finney Freedom Prize for 2012 to 2016, the era between Bitcoin's first two halvings, to the developers Pieter Wuille and Gregory Maxwell. The prize, 1 BTC and a physical award, goes to whoever did most for Bitcoin and human rights in each halving era.
MilestonesSourceBitcoin Magazine (press release), Pieter Wuille and Gregory Maxwell Receive The Finney Freedom Prize (10 Jan 2025)
- 22 Jan 202522 Jan 2025
Trump pardons Silk Road founder Ross Ulbricht
President Trump announced that he had signed a "full and unconditional pardon" for Ross Ulbricht, who had been serving life in prison since 2015 for running the Silk Road online drug market. Silk Road buyers paid in bitcoin.
Policy · 00:12 UTCSourceUS Department of Justice, Office of the Pardon Attorney, Clemency Grants by President Donald J. Trump (2025-Present) (Internet Archive copy, Jan 2026)
- 29 Jan 202529 Jan 2025
El Salvador ends forced acceptance of bitcoin
El Salvador's Legislative Assembly amended the Bitcoin Law so businesses no longer have to accept bitcoin and taxes can no longer be paid in it. The change was part of a $1.4 billion loan deal with the IMF.
PolicySourceEl Mundo (El Salvador), 29 January 2025 (Spanish)
- 30 Jan 202530 Jan 2025
Tether announces USDT for Bitcoin and Lightning
Tether announced that it would bring USDT, its dollar stablecoin, to Bitcoin and the Lightning Network using Lightning Labs' Taproot Assets. It said USDT would work on both "once fully integrated".
MilestonesSourceTether, Tether Brings USDt to Bitcoin's Lightning Network (30 Jan 2025)
- 26 Feb 202526 Feb 2025
IMF approves El Salvador's $1.4 billion loan
The IMF's Executive Board approved El Salvador's 40-month loan of about $1.4 billion. Its terms included making acceptance of bitcoin voluntary, limiting the government's bitcoin dealings and purchases, and barring public debt denominated in or tied to bitcoin.
PolicySourceIMF Country Report No. 25/58, El Salvador: request for an extended arrangement, with the press release of 26 Feb 2025 (PDF; Wayback Machine copy)
- 6 Mar 20256 Mar 2025
US creates a Strategic Bitcoin Reserve
President Trump signed an executive order setting up a US Strategic Bitcoin Reserve, filled with bitcoin the government already owns through forfeiture, and a separate stockpile for other digital assets.
PolicySourceWhite House, executive order of 6 March 2025
- 20 Jun 202520 Jun 2025
Texas creates a state bitcoin reserve
Texas Governor Greg Abbott signed SB 21, creating the Texas Strategic Bitcoin Reserve, run by the state comptroller and kept outside the state treasury. It took effect immediately.
PolicySourceTexas Legislature Online, SB 21 bill history
- 6 Oct 20256 Oct 2025
Bitcoin's October 2025 record
Bitcoin reached a record above $126,000. CoinGecko records the all-time high as $126,080 at 10:57 UTC.
Markets · 10:57 UTCSourceCoinDesk, a year after its record high bitcoin is down 32% (6 Oct 2026; record above $126,000 on 6 Oct 2025)
- 8 Oct 20258 Oct 2025
UK lets retail investors buy crypto ETNs
The UK Financial Conduct Authority lifted its ban on selling crypto exchange-traded notes (ETNs), securities that track the price of a cryptocurrency such as bitcoin, to ordinary investors.
PolicySourceFCA press release, 1 August 2025
- 10 Oct 202510 Oct 2025
Bitcoin Core 30.0 lifts the OP_RETURN limit
Bitcoin Core 30.0 was released, raising the default limit on data in OP_RETURN outputs (unspendable outputs used to attach data to a transaction) from 83 bytes to 100,000 bytes, which in practice removes the cap.
NetworkSourceBitcoin Core 30.0 release notes (published October 10, 2025)
- 10 Oct 202510 Oct 2025
The biggest liquidation crash on record
About $19 billion of leveraged crypto trades were liquidated in 24 hours, the largest such event on record, after President Trump announced an extra 100% tariff on Chinese imports. Liquidations happen when exchanges forcibly close borrowed bets that have lost too much.
Markets · Until 11 OctSourceCoinDesk Research, Market Spotlight: Inside Crypto's $19 Billion Liquidation Event
- 14 Oct 202514 Oct 2025
US files to seize 127,271 bitcoin, its largest forfeiture
US prosecutors filed to forfeit about 127,271 bitcoin, then worth about $15 billion, in what the Justice Department called the largest forfeiture action in its history. The bitcoin was already in US government custody.
PolicySourceUS Justice Department press release 25-1031 (archived copy)
- 29 Oct 202529 Oct 2025
Mining difficulty reaches a record
Mining difficulty, a measure of how hard it is to find a block, rose 6.3% at block 921,312 to a record of about 156 trillion. As of October 2026 it had not been higher.
Network · 10:14 UTCSee block 921,312Sourcemempool.space, block 921,312 (difficulty 155.97 trillion)
- 6 Nov 20256 Nov 2025
Samourai Wallet co-founder sentenced to five years
A US federal judge sentenced Keonne Rodriguez, co-founder of the Samourai Wallet bitcoin app, to five years in prison for conspiring to run an unlicensed money-transmitting business through its coin-mixing service, which pooled users' payments to hide where they came from. Co-founder William Hill was sentenced to four years on 19 November.
PolicySourceCoinDesk, Samourai Wallet Dev Sentenced to 5 Years in Prison (6 Nov 2025)
- 11 Nov 202511 Nov 2025
UK sentences Zhimin Qian in its record bitcoin seizure case
A London court sentenced Zhimin Qian to 11 years and 8 months in a money-laundering case tied to a Chinese investment fraud. Police had seized about 61,000 bitcoin from her, the largest cryptocurrency seizure in UK history, and in October 2026 the courts were still deciding who keeps it.
PolicySourceCrown Prosecution Service, How we prosecuted Europe's biggest crypto money laundering case
- 13 Nov 202513 Nov 2025
Czech central bank buys bitcoin
The Czech National Bank said it had bought digital assets for the first time in its history: a $1 million test portfolio of bitcoin, a dollar stablecoin and a tokenised deposit, held outside its official reserves.
PolicySourceCzech National Bank, The CNB creates a test portfolio of digital assets (13 Nov 2025)
- 20 Nov 202520 Nov 2025
Texas funds its bitcoin reserve, the first state to do so
Texas bought about $5 million of shares in BlackRock's spot bitcoin ETF (IBIT) for its new Strategic Bitcoin Reserve, the first time a US state put money into a bitcoin reserve.
PolicySourceThe Block, Texas reportedly kicks off state bitcoin reserve with $5 million IBIT purchase (25 Nov 2025)
- 2 Dec 20252 Dec 2025
Vanguard lets clients buy bitcoin ETFs
Vanguard, which had refused to offer spot bitcoin ETFs since they launched in January 2024, began letting its brokerage clients trade ETFs and mutual funds that mainly hold crypto, opening them to about 50 million customers.
MarketsSourceCoinDesk, $11T Asset Management Giant Vanguard to Allow Client Access to Crypto ETFs (1 Dec 2025)
- 10 Jan 202610 Jan 2026
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")
- 5 Feb 20265 Feb 2026
Bitcoin's biggest one-day fall since 2022
On mempool.space's price feed, bitcoin fell 13.9% during 5 February, from about $73,000 to $62,900, its biggest one-day fall since FTX collapsed in November 2022. On exchanges it touched $60,000 just after midnight UTC, less than half its October 2025 record.
MarketsSourceThe Block, Bitcoin flash crashes to $60,000 (5 Feb 2026)
- 7 Feb 20267 Feb 2026
Largest mining difficulty drop since 2021
Mining difficulty fell 11.16% at block 935,424, the largest drop since China's mining ban in 2021, after a US winter storm and falling prices led miners to switch off machines. It rose 14.7% at the next adjustment, on 19 February.
Network · 13:56 UTCSee block 935,424Sourcemempool.space, block 935,424
- 11 Feb 202611 Feb 2026
Quantum-resistance proposal BIP 360 is merged
BIP 360, a proposed new output type called Pay to Merkle Root (P2MR) that would not reveal public keys when coins are spent, was merged into the Bitcoin Improvement Proposals repository. It is meant as a first step towards protecting bitcoin from future quantum computers; merging records it for review and changes nothing on the network.
Network · 20:38 UTCSourceGitHub, bitcoin/bips pull request #1670, BIP 360 - Pay to Merkle Root (P2MR)
- 8 Apr 20268 Apr 2026
Morgan Stanley launches a spot bitcoin ETF
Morgan Stanley's own spot bitcoin ETF, MSBT, began trading with a 0.14% annual fee, which the bank called the lowest for any bitcoin fund at the time. It took in about $34 million on its first day.
MarketsSourceThe Block, Morgan Stanley's low-cost spot Bitcoin ETF launches (8 Apr 2026)
- 8 Apr 20268 Apr 2026
The New York Times names Adam Back as Satoshi; he denies it
The New York Times published an investigation by John Carreyrou arguing that Adam Back, the British cryptographer who invented hashcash, is Satoshi Nakamoto. Back answered on X the same morning: "i'm not satoshi".
Milestones · 04:00 UTCSourceThe New York Times (John Carreyrou), investigation naming Adam Back (8 Apr 2026, published 04:00 UTC; Wayback Machine copy)
- 19 Apr 202619 Apr 2026
Bitcoin Core 31.0 rebuilds the mempool
Bitcoin Core 31.0 was released with "cluster mempool", a rebuilt system for holding unconfirmed transactions that groups related ones and ranks them by the fees miners would earn. It also added an option to send your own transactions only over Tor or I2P, hiding your IP address.
NetworkSourceBitcoin Core 31.0 release notes (published April 19, 2026)
- 1 Jun 20261 Jun 2026
Strategy sells bitcoin for the first time since 2022
Strategy, which held about 844,000 bitcoin, disclosed that it had sold 32 of them in late May for about $2.5 million to pay dividends on its preferred shares, its first sale since December 2022. It sold another 3,588 bitcoin between 29 June and 5 July.
MarketsSourceSEC, Strategy Inc Form 8-K (1 Jun 2026)
- 25 Jun 202625 Jun 2026
Bitcoin falls to its lowest since 2024
Bitcoin fell to about $58,000 on 25 June and to the same level again on 30 June, its lowest since late 2024 and about 54% below its October 2025 record. US spot bitcoin ETFs had $4.5 billion of net outflows in June, their worst month since they launched in January 2024.
MarketsSourceCoinDesk, Bitcoin plunges to new multi-year low of $58,000 (25 Jun 2026)
- 15 Jul 202615 Jul 2026
Japan regulates crypto like stocks
Japan's parliament passed amendments that regulate crypto assets such as bitcoin as financial instruments, like stocks, rather than as a means of payment. They add insider-trading bans, clear a legal obstacle to spot bitcoin ETFs, and allow a flat 20% tax on crypto gains, down from up to 55%, from 2028.
PolicySourceCoinDesk, Japan moves crypto under financial rules in regulatory overhaul (15 Jul 2026)
- 30 Jul 202630 Jul 2026
Coldcard wallets drained through a seed bug
Attackers took about 594 bitcoin from about 500 Coldcard hardware wallets, using a firmware bug that made the devices' seeds (the secret words that back up a wallet) far easier to guess than intended. Galaxy Research later counted about 1,806 bitcoin taken across several waves.
NetworkSourceCoinkite, Coldcard Security Advisory (30 Jul 2026, updated 1 Aug 2026)
- 8 Aug 20268 Aug 2026
BIP-110 supporters split onto a minority chain
Nodes enforcing BIP-110, a proposed one-year soft fork (a tightening of the rules) to restrict non-financial data such as inscriptions, rejected block 961,632 because it did not signal support, and followed a rival block instead. Only about 2.5% of recent blocks had signalled for it, so the main chain kept going and the BIP-110 chain fell behind.
Network · 19:35 UTCSee block 961,632SourceThe Block, Bitcoin's BIP-110 supporters split onto minority chain as main network pulls ahead (8 Aug 2026)
- 15 Sept 202615 Sept 2026
US crypto market bill fails in the Senate
The US Senate voted 49-50 on a procedural motion to take up the Clarity Act, far short of the 60 votes needed to advance it. The bill would have set the first comprehensive federal rules for crypto markets, including making the CFTC the watchdog for crypto spot trading.
PolicySourceCoinDesk, Crypto's biggest Senate push falls flat as the Clarity Act fails to clear a crucial procedural vote (15 Sep 2026)
- 16 Oct 202616 Oct 2026
Mt. Gox repayment deadline moved to 2027
Mt. Gox's rehabilitation trustee, with the court's permission, moved the deadline for repaying the collapsed exchange's creditors from 31 October 2026 to 31 October 2027, because many creditors had still not completed the steps needed to be paid.
PolicySourceMt. Gox Rehabilitation Trustee, Notice Concerning Change of Repayments Deadline (16 Oct 2026, English translation)
Ahead on the network
- 30 May 202730 May 2027
Block 1,000,000
Bitcoin's millionth block. Nothing changes in how Bitcoin works; it's a round number.
Network · EstimateBlock 1,000,000SourceWorked out from recent block times on mempool.space
- 7 Jul 20287 Jul 2028
Next halving
At block 1,050,000, the new bitcoin miners earn for each block halves from 3.125 to 1.5625 BTC.
Network · EstimateBlock 1,050,000