Anonymous proof-of-asset transactions using designated blind signatures
This addresses privacy concerns for cryptocurrency users in asset verification, but it appears incremental as it builds on existing blind signature methods.
The paper tackles the problem of preserving user anonymity in proof-of-asset transactions within cryptocurrency systems by proposing a scheme that uses designated blind signatures, limiting verification to a single authorized party.
We propose a scheme to preserve the anonymity of users in proof-of-asset transactions. We assume bitcoin-like cryptocurrency systems in which a user must prove the strength of its assets (i.e., solvency), prior conducting further transactions. The traditional way of addressing such a problem is the use of blind signatures, i.e., a kind of digital signature whose properties satisfy the anonymity of the signer. Our work focuses on the use of a designated verifier signature scheme that limits to only a single authorized party (within a group of signature requesters) to verify the correctness of the transaction.