{"content":"In the MetaID protocol, a user's MetaID value is defined as the root index of their data tree. In v1, users had to create a root transaction to obtain their MetaID value, which needed to be confirmed on the blockchain. In v2, however, the MetaID value is generated by applying the SHA256 hash function to the user's address. This means every address naturally comes with its own MetaID, enabling seamless cross-chain functionality.","contentType":"text/plain"}