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 0xde68b60534be48c59204738c83709a5db25e3372abb85dffb2f2b97b623543a8. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f6f9c938-fece-4468-9ca4-403586972f3c.json and https://artists.proofprofile.net/proofs/artist/f6f9c938-fece-4468-9ca4-403586972f3c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Songs of Praise to the Prophet (Sufi Music from Syria)
Songs of Praise to the Prophet. Sufi Music from Syria