AUTHENTICATION OF BLOCKCHAIN ADDRESSES, USING CROSS-CHAIN COMMUNICATION

原文（中文）

In some implementations, a method for performing authentication of blockchain addresses is provided, using cross-chain communication techniques. Ownership of a blockchain address is verified, along with off-chain attributes of the blockchain address owner. An identification service blockchain of an identification service stores a relational link between the blockchain address and the off-chain attributes of the owner of the blockchain address. The identification service receives from a transaction blockchain using a cross-chain protocol, an attribute query for attribute data corresponding to at least some of the off-chain attributes. In response to receiving the attribute query, the attribute data is retrieved from the identification service blockchain, and is provided as an attribute response to the transaction blockchain that includes the blockchain address.