Rafael Godoy Lozano (24 October 1907 – 14 March 1973) was a well-known Colombian composer born in Natagaima, Tolima. Biography From a young age, he was linked to the trade-union movement in Barranc
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 0xc744f4dd3610a7065de299412707345a387600ae36e0e5e33be7a0ce5bd473d2. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9da6bc9a-3d79-4876-9dbd-6a946ecaa8d7.json and https://artists.proofprofile.net/proofs/artist/9da6bc9a-3d79-4876-9dbd-6a946ecaa8d7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).