Esther Forero Celis (10 December 1919 – 3 June 2011), better known as Estercita Forero or "La Novia de Barranquilla" ("Barranquilla's Darling"), was a Colombian singer and composer. Early years Esthe
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 0x632ed10695c63db32fa905eae2e9b82b0423f4e8eaf76b9e1ad7af8aadef994e. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6e9b8526-0655-4103-8aaf-4de97c9b0244.json and https://artists.proofprofile.net/proofs/artist/6e9b8526-0655-4103-8aaf-4de97c9b0244.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).