IEEE 3221.01-2025

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IEEE Standard for Blockchain Interoperability - Cross-Chain Transaction Consistency Protocol

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IEEE 3221.01-2025

IEEE Standard for Blockchain Interoperability - Cross-Chain Transaction Consistency Protocol

PUBLISH DATE 2025
PAGES 26
IEEE 3221.01-2025

New IEEE Standard - Active.

The technical architecture and details of three cross-chain approaches are described in this standard, including:

  • centralized/multi-signature notary-based cross-chain technology,
  • HTLC-based cross-chain technology, and
  • relay chain-based cross-chain technology.

This standard establishes criteria and requirements for the interoperability of blockchain networks and corresponding cross-chain transactions.

The stated technical specifications and requirements support universally needed interoperability of blockchains and are applicable to most cross-chain scenarios.

The specified consistency requirements apply to all cross-chain transactions under different cross-chain protocols.

This document provides a uniform standard for the interoperability of blockchain networks.

It provides a classification of cross-chain protocols, including centralized/multi-signature notary, Hash Time-Locked Contract (HTLC), relay chain, etc.

It provides requirements relevant to the cross-chain smart contract, cross-chain message format, cross-chain transaction process in different cross-chain protocols, and consistency considerations of cross-chain transactions.

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