thumb|José Gallegos y Arnosa, El monaguillo (The Chorister) A choirboy is a boy member of a choir, also known as a treble. As a derisive slang term, it refers to a do-gooder or someone who is morall
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 0x0766998f1adb8b65f44cf3995f40dd60cbdb46651bbbdd3989cdcba9cdc8c2e9. Chain 2 (Bitcoin): anchored in block 954556 (2026-06-20T12:14:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ad286d07-932e-4340-8438-68bbfbc282f5.json and https://artists.proofprofile.net/proofs/artist/ad286d07-932e-4340-8438-68bbfbc282f5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).