A signature protocol in which a signer validates a hidden message, enabling unlinkable digital-cash issuance.
Blind signature is best understood as part of a system rather than as an isolated definition. Its related coordinates show the mechanisms, incentives and historical records that give the term practical meaning.
Blind signature should be evaluated against a concrete threat model: what is protected, from whom, for how long and at what operational cost. A design may remove one dependency while introducing another, so custody, privacy and verification must be judged as a complete system.
Understanding Blind signature helps distinguish a verifiable Bitcoin mechanism or historical record from slogans, products and market narratives.
For the clearest picture, read this entry together with David Chaum, Chaumian eCash, Cashu, Bitcoin privacy. The reverse links also lead from DigiCash, Chaumian eCash, Fedimint, Cashu.
Linked to related atlas coordinates
Grounded in a source record
Explains function and trade-offs
Part of the open Bitcoin knowledge graph