What Does BTC1 Mean?

BTC1 is a Bitcoin protocol that has split off from two other bitcoin chains: Bitcoin Core and Bitcoin Cash. A series of “forks” have resulted in these three bitcoin projects, which are separate and autonomous.


Techopedia Explains BTC1

BTC1 is a bitcoin project that enforces the Segregated Witness protocol or SegWit. SegWit was created to solve a block size problem by appending a signature instead of including it in an original segment. SegWit gained widespread support and is now supported by bitcoin miners.

One way to characterize BTC1 is as a place for the implementation of a hard fork that is not part of Bitcoin Cash or Bitcoin Core (a hard fork related to SegWit protocol). To that end, the Bitcoin Core community is taking care to disavow BTC1 and advise users that BTC1 does “not have anything to do” with Bitcoin Core.


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Margaret Rouse
Technology Expert

Margaret is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical business audience. Over the past twenty years, her IT definitions have been published by Que in an encyclopedia of technology terms and cited in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine, and Discovery Magazine. She joined Techopedia in 2011. Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages.