Researcher Robin Linus has introduced Bitcoin Poker, a protocol that turns an unfinished poker interface left in Bitcoin’s early code by Satoshi Nakamoto in 2008 into a workable design. The protocol is built for heads-up Texas Hold’em between two players and does not require a dealer. Instead, it uses Bitcoin’s current rules to handle both gameplay outcomes and fund settlement.
According to the report, the card layout is generated from secret inputs provided by both players. Only the nine cards needed for each hand are produced, while cryptographic commitments and zero-knowledge proofs are used to keep dealing fair. The protocol can also detect duplicate cards. A randomly generated game passes the required checks with a probability of about 48%, which means an average of 2.08 attempts is needed.
To cover possible game outcomes, Bitcoin Poker pre-builds a transaction tree. In a reference setup, that tree contains 56,132 logical nodes and requires about 8.4 MB of preparation data. Normal play happens off-chain, with Bitcoin transactions used only if cooperation breaks down. If one player refuses to continue, a timeout mechanism can settle the committed pot after a specified delay and return the unused balance to the exiting player, though it cannot force a player to reveal cards. The design does not require changes to Bitcoin consensus rules, supports only two participants, and still needs an independent security review.
Researcher Robin Linus has released the Bitcoin Poker protocol, expanding an unfinished poker interface that Satoshi Nakamoto left in Bitcoin’s early code in 2008 into a workable system, according to Bitcoin.com News cited by Odaily.
The protocol supports Texas Hold’em between two players without a dealer and uses Bitcoin’s existing rules to handle gameplay and fund settlement. Bitcoin Poker generates the cards from secret inputs provided by both sides. It creates only the nine cards needed for each hand and uses cryptographic commitments and zero-knowledge proofs to keep dealing fair.
The design can check for duplicate cards. The report said a randomly generated game passes that check with a probability of about 48%, so the process needs 2.08 attempts on average. To prepare for possible game outcomes, the protocol builds a transaction tree in advance. A reference configuration includes 56,132 logical nodes and about 8.4 MB of setup data.
Regular play takes place off-chain, and transactions are used only when cooperation breaks down and a dispute has to be handled. If one side refuses to continue, a timeout mechanism can settle the committed pot after a specified delay and return the unused balance to the player who exits, but it cannot force a player to reveal cards.
The design does not require any change to Bitcoin consensus rules. It supports only two participants and still requires an independent security review.
This article was originally published by Bit.Fan. For more cryptocurrency news and market insights, visit www.bit.fan. Disclaimer:
The market information, project data, and third-party content displayed on this platform are for industry information sharing only and do not constitute any form of investment advice or return commitment.
Cryptocurrency trading carries high risks. Users should fully assess their risk tolerance and make independent decisions. All profits, losses, and legal responsibilities are borne by the users themselves.
