Cross-Chain Settlement
Definition
The transfer of value between participants whose tokenized claims are recorded on distinct distributed ledgers, executed through a bridge, intermediary, atomic-swap mechanism, or interoperability protocol. Cross-Chain Settlement inherits the trust assumptions of every chain it traverses and every mechanism that connects them.
Notes
A cross-chain transaction is not, in the settlement sense, a single transaction. It is a sequence of transactions on distinct ledgers, bound together by a coordinating mechanism whose own trust properties must be assessed alongside those of the underlying chains. The coordinating mechanism is, in most contemporary architectures, the weakest binding in the system — bridges have been the most consistent point of failure in tokenized settlement, and the FSB's 2025 thematic peer review notes that fragmented oversight of these mechanisms remains a primary source of regulatory arbitrage.1
Cross-Chain Settlement is assessable, but only if the assessment is performed at the level of the combined system. A determination that each individual chain is operationally suitable does not constitute a determination that a settlement traversing them is operationally suitable. The combined system is the unit of assessment.
See also
Chain-Level Dependency · Settlement Finality · Validator Concentration Risk · Black-Box Infrastructure
References
- ↩ Financial Stability Board, Thematic Peer Review on the FSB Global Regulatory Framework for Crypto-asset Activities (October 16, 2025). fsb.org
- ↩ Bank for International Settlements, Project Mariana: Cross-Border Exchange of Wholesale CBDCs Using Automated Market-Makers (September 28, 2023). bis.org