thumb|Qawwali at Ajmer Sharif Dargah Qawwali is a form of Sufi Islamic devotional singing originating in South Asia. Originally performed at Sufi shrines throughout the Indian subcontinent, it is famo
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 0xfb366013c2c41e5709750ceaef2eaf8c3ee303a34578dd304f66cbbe6a3a78c9. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ae7bb4ba-13ec-44b2-b867-f7deec811540.json and https://artists.proofprofile.net/proofs/artist/ae7bb4ba-13ec-44b2-b867-f7deec811540.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).