F2C2T: A Freeze-Free Cross-chain Transfer Consistency Guarantee Mechanism for Data Asset with Associations

Many existing cross-chain mechanisms do not adequately address all the characteristics of data assets and suffer from severe architectural limitations, resulting in inconsistency and security issues. While recent research has achieved cross-chain data asset transfer between distinct blockchains through a "freeze-commit" mechanism, their focus has mainly been on non-association, i.e., the status transmission of an asset is only related to itself. The "freeze-commit" mechanism introduces conflicts or potential double-spending across different chains and disrupts normal business processes for data assets with associations. To address this issue, we propose a dedicated mechanism for ensuring freeze-free consistency in cross-chain transfers of data assets. Instead of freezing the assets, we employ an incremental status updating approach to track status changes in the assets triggered by associated assets. The incremental status is then submitted and settled on the destination chain when the transfer process is completed. We provide analytical and experimental demonstrations to show that this mechanism effectively guarantees the consistency of data assets in cross-chain transfers while keeping the assets available throughout the process.