Cross-chain

MetaID V2 is designed to operate on Bitcoin and Bitcoin-structured blockchains. As long as the indexer supports it, PINs can theoretically be built on any Bitcoin-structured blockchain. All transactions that comply with the MetaID protocol format, even if dispersed across different blockchains, can be aggregated under a single MetaID node.

Support for cross-chain compatibility is theoretically feasible with any Bitcoin-structured blockchain that meets the following criteria:

• Uses a UTXO architecture.

• Locking scripts support the op_return operator.

• Supports the classic Bitcoin address format (i.e., Bitcoin addresses prefixed with “1”).

At present, in addition to Bitcoin, the following major public chains meet the conditions supported by MetaID. With future support from relevant indexers and wallets, these chains are expected to be supported:

• MVC

• BCH

• eCash

• Dogecoin

• Litecoin

• Bitcoin SV

When implementing cross-chain support in wallets and applications, the following concepts should be noted:

Unified Address

[TBD]

Unified UTXO Chain

[TBD]