The history of cryptocurrency runs from 1980s and 1990s digital-cash experiments such as DigiCash, through the launch of Bitcoin on 3 January 2009 and Ethereum in 2015, to an asset class with its own rulebooks: US spot bitcoin ETFs in January 2024, the EU's MiCA regulation from December 2024 and the US GENIUS Act in July 2025.
What came before Bitcoin?
Digital money is older than Bitcoin. In 1983 cryptographer David Chaum described blind signatures, a way for a bank to sign digital coins without seeing who spent them, and in 1989 he founded DigiCash to sell that e-cash. DigiCash went bankrupt in 1998, partly because it needed banks to adopt it and to run the central server that checked every payment.
Later proposals tried to remove that central server. Adam Back's Hashcash (1997) used computing work as a cost to deter email spam; Wei Dai's b-money and Nick Szabo's bit gold (both 1998) sketched money created and tracked by a network. None solved the double-spending problem: without a trusted record-keeper, what stops someone copying a digital coin and spending it twice?
How did Bitcoin begin?
On 31 October 2008 a pseudonymous author, Satoshi Nakamoto, published the nine-page paper Bitcoin: A Peer-to-Peer Electronic Cash System. It combined proof of work, which the paper credits to Hashcash, with a public chain of time-stamped blocks, so that the honest majority of computing power decides the order of transactions. That made double spending impractical without any bank or server in charge.
The network started when the genesis block was mined on 3 January 2009. Nakamoto embedded that day's Times headline, "Chancellor on brink of second bailout for banks", in the block. Early bitcoin had almost no market price; the often-quoted first purchase was 10,000 BTC for two pizzas on 22 May 2010. Nakamoto stopped posting publicly in December 2010, and the project has been run by open-source volunteers since. To see how this design works today, read what cryptocurrency is and how it differs from bank money.
How did altcoins and Ethereum change crypto?
Because Bitcoin's code is open source, developers copied and modified it. Litecoin (October 2011) changed the block time and hashing algorithm; the XRP Ledger (2012) took a different design aimed at payments. The bigger shift came on 30 July 2015, when Ethereum launched with a built-in programming language. Smart contracts let anyone deploy programs on a blockchain, which later enabled tokens, decentralized exchanges, lending protocols and tokenized real-world assets.
Early growing pains shaped the industry's habits. The Mt. Gox exchange collapsed in February 2014 with customer coins missing, a failure still cited whenever people repeat "not your keys, not your coins". In 2016 an exploit of The DAO, a large Ethereum smart contract, led to a hard fork on 20 July 2016, and Ethereum Classic continued the original chain.
What happened during the boom-and-bust years (2017–2022)?
Crypto markets moved in sharp cycles. The 2017 boom in initial coin offerings ended in a long 2018 decline, though Cboe and CME had listed regulated bitcoin futures in December 2017. A second boom in 2020–2021 brought corporate treasury buyers such as MicroStrategy (from August 2020) and El Salvador's decision to make bitcoin legal tender in September 2021. Bitcoin's supply schedule, which halves the block reward roughly every four years, is often discussed alongside these cycles; see Bitcoin halvings explained.
The cycle broke badly in 2022. The TerraUSD stablecoin lost its dollar peg in May, crypto lenders froze withdrawals, and the FTX exchange collapsed in November 2022. In between, Ethereum completed The Merge on 15 September 2022, replacing mining with staking; our comparison of proof of work vs proof of stake explains what changed.
How did crypto enter mainstream finance (2024–2026)?
After a federal appeals court ruled in Grayscale's favour in 2023, the US SEC approved the listing of spot bitcoin exchange-traded products on 10 January 2024, and spot ether products began trading on 23 July 2024. On 20 April 2024 Bitcoin's fourth halving, at block 840,000, cut the block reward from 6.25 to 3.125 BTC. In September 2025 the SEC approved generic listing standards that let exchanges list qualifying commodity-based crypto ETPs without a separate rule filing each time, and spot products on further tokens followed. For how these products compare with other ways to hold a basket of tokens, see crypto index funds vs ETFs.
Lawmakers wrote dedicated rules. The EU's Markets in Crypto-Assets Regulation (MiCA) applied to stablecoin issuers from 30 June 2024 and in full from 30 December 2024; its transitional period for existing firms ended on 1 July 2026. In the United States, the GENIUS Act, signed on 18 July 2025, created a federal licensing framework for payment stablecoins, with reserve requirements. Broader US market-structure legislation, the CLARITY Act, passed the House in July 2025 but had not become law as of October 2026. Our guide to crypto regulation in the US, EU and UK covers what these rules require.
What are the key dates in cryptocurrency history?
| Date | Event | Why it mattered |
|---|---|---|
| 1983 | David Chaum publishes a blind-signature scheme for untraceable payments | Cryptographic basis for private digital cash |
| 1989 | Chaum founds DigiCash | First company to sell e-cash; it went bankrupt in 1998 |
| 1997–1998 | Hashcash (Adam Back), b-money (Wei Dai) and bit gold (Nick Szabo) | Proof-of-work and decentralized-money ideas; the Bitcoin whitepaper cites Hashcash and b-money |
| 31 Oct 2008 | Bitcoin whitepaper published by Satoshi Nakamoto | Solved double spending without a trusted third party |
| 3 Jan 2009 | Bitcoin genesis block mined | The network goes live |
| 22 May 2010 | 10,000 BTC paid for two pizzas | First widely cited purchase of goods with bitcoin |
| Oct 2011 | Litecoin launches | One of the first coins built from Bitcoin’s code |
| Feb 2014 | Mt. Gox halts withdrawals and files for bankruptcy | The largest early exchange failure; customers lost access to their coins |
| 30 Jul 2015 | Ethereum mainnet (Frontier) launches | General-purpose smart contracts |
| 20 Jul 2016 | Ethereum hard fork after The DAO hack | Ethereum Classic continues the original chain |
| Dec 2017 | Cboe and CME list bitcoin futures | First regulated US crypto derivatives |
| 7 Sep 2021 | El Salvador’s Bitcoin Law takes effect | First country to make bitcoin legal tender |
| May 2022 | TerraUSD stablecoin and LUNA collapse | Algorithmic stablecoin failure; contagion to lenders |
| 15 Sep 2022 | The Merge: Ethereum switches to proof of stake | Mining ends on Ethereum |
| Nov 2022 | FTX exchange collapses and files for bankruptcy | Renewed focus on custody and segregation of client assets |
| 10 Jan 2024 | SEC approves spot bitcoin exchange-traded products | Bitcoin exposure through ordinary brokerage accounts |
| 20 Apr 2024 | Fourth Bitcoin halving at block 840,000 | Block reward falls from 6.25 to 3.125 BTC |
| 23 Jul 2024 | US spot ether ETPs begin trading | Second crypto asset available in spot ETP form |
| 30 Dec 2024 | EU MiCA regulation applies in full | One licensing regime for crypto-asset service providers across the EU |
| Jan 2025 | El Salvador amends its Bitcoin Law | Merchant acceptance of bitcoin becomes voluntary |
| 18 Jul 2025 | US GENIUS Act signed into law | Federal framework for payment stablecoins |
| 17 Sep 2025 | SEC approves generic listing standards for commodity-based trust shares | Exchanges can list qualifying crypto ETPs without a separate rule filing each time |
| 1 Jul 2026 | MiCA transitional (grandfathering) period ends | Crypto-asset service providers in the EU must now hold a MiCA authorisation |
Frequently Asked Questions
Who invented cryptocurrency?
Bitcoin, the first decentralized cryptocurrency, was designed by Satoshi Nakamoto, a pseudonymous person or group whose identity has never been confirmed. Earlier digital-cash systems such as David Chaum's DigiCash, founded in 1989, depended on a central company and did not survive.
When was the first cryptocurrency created?
The Bitcoin whitepaper was published on 31 October 2008, and the network went live when the genesis block was mined on 3 January 2009. Centralized digital cash such as DigiCash existed earlier but is not usually counted as cryptocurrency.
Why was Bitcoin created?
The Bitcoin whitepaper describes a way to send online payments directly between two parties without relying on a trusted financial institution, using proof of work to stop the same coins being spent twice. The genesis block also embedded a January 2009 newspaper headline about a second bank bailout.
What were the biggest crypto milestones of 2024 and 2025?
The US SEC approved spot bitcoin exchange-traded products in January 2024; Bitcoin's fourth halving cut the block reward to 3.125 BTC in April 2024; the EU's MiCA regulation applied in full from 30 December 2024; the US GENIUS Act created a federal stablecoin framework in July 2025; and in September 2025 the SEC approved generic listing standards for spot commodity ETPs, including crypto.
📚 Sources & References
- Nakamoto, S. — Bitcoin: A Peer-to-Peer Electronic Cash System (31 Oct 2008) (accessed 21 Oct 2026)
- U.S. SEC — Statement on the Approval of Spot Bitcoin Exchange-Traded Products (10 Jan 2024) (accessed 21 Oct 2026)
- ESMA — Markets in Crypto-Assets Regulation (MiCA): application dates and transitional measures (accessed 21 Oct 2026)
- The White House — The President Signed into Law S. 1582, the GENIUS Act (18 Jul 2025) (accessed 21 Oct 2026)
- U.S. SEC — SEC Approves Generic Listing Standards for Commodity-Based Trust Shares (17 Sep 2025) (accessed 21 Oct 2026)
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