Nicomedes Santa Cruz Gamarra (June 4, 1925 – February 5, 1992) was a Peruvian singer, songwriter and musicologist. He was primarily a decimista (or decimero), a singer of décimas. He researched most f
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c53a79a72eb17094d52202640c220b8981abf5f88121dc284123fadf263394. Chain 2 (Bitcoin): anchored in block 954002 (2026-06-16T20:47:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/31cae60f-da21-46fc-8cb4-1a5231d90bd4.json and https://artists.proofprofile.net/proofs/artist/31cae60f-da21-46fc-8cb4-1a5231d90bd4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).