Bitcoin’s whitepaper was posted to a cryptography mailing list on Oct. 31, 2008. It described a peer-to-peer electronic cash system, a way for people to send money online without a bank approving each payment. That nine-page proposal is now 18 years old. The network it led has grown into an asset worth about $1.55 trillion, with Wall Street, companies and governments now involved.
The original idea was simple
Satoshi Nakamoto’s paper introduced a public transaction record and proof of work. Miners use computing power to check transactions and add blocks, which makes changing old history hard. Bitcoin went live on Jan. 3, 2009, when Satoshi mined the first block. The 21 million supply limit came with the software, not directly from the whitepaper. That detail matters because scarcity is now central to how many investors describe the asset.
Supply is nearly complete
More than 95% of all bitcoin has already been mined. The reward began at 50 BTC per block and halves about every four years. After the April 2024 halving, miners get 3.125 BTC per block. On March 9, 2026, the 20 millionth bitcoin was mined. The rest will arrive slowly, with the full supply expected around 2140. That long tail may keep miners and holders focused on fees and demand, not just new coins.
ETFs and corporate treasuries changed the market
U.S. spot Bitcoin ETFs launched in January 2024 and gave traditional investors a route through brokerage accounts. By Oct. 31, 2026, these funds held about 1.28 million BTC, or 6.36% of circulating supply. Their net assets reached $102.97 billion, with cumulative inflows above $57 billion. BlackRock’s IBIT was the largest at about $66.312 billion. Strategy held 848,517 BTC, more than 4% of maximum supply. In March 2025, an executive order set up a Strategic Bitcoin Reserve using seized coins.
Price history shows the swings
Bitcoin’s first dollar rate in October 2009 was about $0.000764. It crossed $1,000 in 2013, neared $20,000 in December 2017, and hit about $69,000 in November 2021. It set a record near $73,798 in March 2024, then reached an intraday high of $126,223 on Oct. 6, 2025. The market later reversed. Bitcoin fell to about $58,586 on June 30, 2026, before recovering to around $77,200 by Oct. 31. The road from a mailing-list post to a $1.55 trillion asset has not been smooth, but it has been eventful.
