$TBC TBC (Turing Bit Chain)

TBC Public Chain: High-Performance Infrastructure Optimized for Payment Scenarios
The TBC public chain is a new-generation blockchain built on the UTXO (Unspent Transaction Output) model, designed to address the limitations of Bitcoin and Ethereum in terms of throughput, cost, and privacy. Its design philosophy centers on “payment first,” providing foundational support for micropayments and the machine economy through multiple technological innovations.

Core Advantages of the UTXO Model
Unlike the account model, the UTXO model treats transaction outputs as independent entities, inherently supporting parallel processing. This feature brings threefold benefits to payment scenarios:
High concurrency: Each UTXO can be independently validated, avoiding global state contention, allowing TBC's theoretical throughput to reach millions of TPS—far exceeding traditional blockchains.
Enhanced privacy: UTXO transactions can leverage advanced mixing technologies to enable auditable anonymous payments, meeting enterprise-level data confidentiality requirements.
Simplified security model: The UTXO script system (such as Taproot) supports complex conditional payments (e.g., multisig, timelocks) without relying on more complicated logic.

Performance and Cost Optimization
TBC employs a large block design (supporting 4GB blocks) and an infinite scaling mechanism, reducing transaction confirmation times to under 200 milliseconds, with near-zero transaction fees. Compared to payment solutions mentioned in the x402 document, TBC significantly outperforms Ethereum L1 and even some Layer-2 solutions in terms of settlement speed and cost.

Smart Contract and Cross-Chain Flexibility
TBC supports Turing-complete smart contracts through the BVM (Bitcoin Virtual Machine) while retaining the simplicity of UTXO. Its future cross-chain bridge protocols (such as HTLC-based atomic swaps) will allow assets to flow freely between TBC, Bitcoin, and Ethereum, providing the foundation for x402’s multi-chain payment vision.