What is Bitcoin (BTC)?

By CMC AI
12 November 2026 08:40PM (UTC+0)
TLDR

Bitcoin (BTC) is a decentralized digital currency that lets people transfer value directly over the internet without a central operator.

  1. It was designed for peer to peer payments without relying on a bank or payment intermediary.

  2. Its public blockchain records transactions, while independent computers help verify them.

  3. Bitcoin’s supply is capped at 21 million BTC, with new coins issued through mining.

Deep Dive

1. Purpose and value proposition

Bitcoin was described in a 2008 whitepaper by the pseudonymous Satoshi Nakamoto and launched in January 2009. Its core purpose is direct online transfers between users, without a financial institution needing to approve or process each payment. (CoinMarketCap)

2. Technology and architecture

Bitcoin runs on a public blockchain, a shared record of transactions maintained by computers around the world. Miners use proof of work—computational effort used to propose blocks of transactions—and network participants check that blocks follow Bitcoin’s rules. This helps the network agree on transaction history without a central administrator. (The Block)

3. Supply and issuance

Bitcoin’s software sets a maximum supply of 21 million BTC. Mining rewards introduce new BTC, and those rewards decrease periodically. This creates a predictable issuance schedule; it does not guarantee that BTC will retain or gain value.

Conclusion

Bitcoin is both a digital currency and an open, decentralized payment network, built to move value directly between users under a limited supply rule. How effectively can its base network support everyday payments as it continues to evolve?

CMC AI can make mistakes. Not financial advice.