La Bien Querida (The Well Liked) is the stage name Ana Fernández-Villaverde (born in Bilbao, November 6, 1972) used to develop her musical career. A painter by trade, she decided to initiate in 2007 h
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8898cca97a009649cb6c175e7bd3e3342b16b3fb9b31f7078fe6f4adb0d5410c. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a97d9578-bd85-4a5e-95c1-918fe93b93b2.json and https://artists.proofprofile.net/proofs/artist/a97d9578-bd85-4a5e-95c1-918fe93b93b2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).