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Bitcoin’s origin year is 2008 (whitepaper) / 2009 (network launch), and yes, it has been called “bitcoins” (with the plural “s”) from the very beginning. blockworks.com Original year • October 31, 2008: Satoshi Nakamoto published the whitepaper “Bitcoin: A Peer-to-Peer Electronic Cash System” on the cryptography mailing list. This is the public introduction of the idea. historyofbitcoin.io • January 3, 2009: The Bitcoin network went live when the genesis block (Block 0) was mined. The first software release followed a few days later (around January 9), and the first transaction (Satoshi to Hal Finney) happened on January 12. en.wikipedia.org So the concept dates to 2008; the working currency/network dates to 2009. Was it ever called “bitcoins” (plural)? Yes — from the start and continuously since. • The standard distinction is: • Bitcoin (capital B) = the protocol, network, or system. • bitcoin / bitcoins (lowercase) = the unit of currency. • Official style guides (including bitcoin.org) explicitly use the plural: e.g., “I sent ten bitcoins today.” The ticker is BTC, and the plural of the unit is “bitcoins.” bitcoin.org • Early usage by Satoshi and the community followed the same pattern. Contemporaries and early forum/email discussions referred to “bitcoins” as the plural units, and Wikipedia lists the plural form as “bitcoins.” en.wikipedia.org People still commonly say “bitcoins” today when referring to multiple units (e.g., “I hold 2.5 bitcoins”), though “BTC” or just “bitcoin” is also frequently used. The plural form has never been incorrect or non-original.