Discussing cross-blockchain protocol that enables the use of ledgers in an interoperable bundle.
The advantage of the cross-blockchain protocol for public registries is that it can unite any number of existing ledgers in one ecosystem and does not need to upgrade the protocols of such blockchains. In simple terms, the protocol works as an aggregator of tokens across blockchains. The protocol conceptually comprises two major elements.
Source:
https://cointelegraph.com/news/title-token-for-blockchain-estate-registry-part-3