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Gate Square New & Returning Creator Rewards are ongoing!
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TBC (Turing Bit Chain)
UTXO Smart Contracts: The Return and Beyond of Programmability
Satoshi Nakamoto embedded scalability into the design of the scripting system, writing:
「The scripting language is designed to be flexible and extensible... advanced features such as multi-signature transactions, time locks, and more complex logic to be added in the future.」
Translation: 「The scripting language is designed to be flexible and extensible... future features include multi-signature, time locks, and more complex logic.」
Although Satoshi Nakamoto did not explicitly mention smart contracts, his reserved design for "complex logic" paves the way for TBC's UTXO smart contracts.
TBC introduces a novel BVM (Bitcoin Virtual Machine) architecture, embedding Turing-complete contract logic into the UTXO model: using the OP_PUSH_META opcode to bind contract code with transaction data, each UTXO executes its own contract independently, miners only need to verify scripts locally without global state competition. This design increases contract execution efficiency by 10 times compared to Ethereum, and when failures occur, no Gas fee is deducted, with debugging costs approaching zero.
Meanwhile, TBC20 (FT protocol) and TBC721 (NFT protocol) support full on-chain NFT issuance, breaking the "pseudo-decentralization" dilemma of off-chain storage in Ethereum. TBC's smart contracts are not mere imitations of Ethereum but the ultimate realization of Satoshi Nakamoto's "script scalability" prophecy—allowing the UTXO model to maintain high efficiency while supporting complex financial logic such as DeFi and GameFi.