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 0x21ed847e6082b2f383db29a004ec37bc5e120013c1f1fa91ef787d738867b423. 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/564a4d75-f69a-48f5-9472-98f8c168737f.json and https://artists.proofprofile.net/proofs/artist/564a4d75-f69a-48f5-9472-98f8c168737f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Instructional Audiobook (World's Rhythmology Vol. 1) [Rhythms From Maqsoum]
Audiolibro Ritmología del Mundo, Vol. 1 "Ritmos Provenientes del Maqsoum"