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 0x7333a4c1e8c8306c1c112e33cdbacf0270df73e53e613efb97890de6207caa5e. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9fdf2cf4-1c0d-4bf5-b92f-764c4d7d78ff.json and https://artists.proofprofile.net/proofs/artist/9fdf2cf4-1c0d-4bf5-b92f-764c4d7d78ff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lullabies and Nursery Rhymes (Sleep Music for Babies, Children, Relaxation and Meditation)
Lullabies and Nursery Rhymes (Sleep Music for Babies, Children, Relaxation and Meditation, Vol. 2)