1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x2b235de4d08c3324e25a62bd11814ec846da5cd3f8ca92fe54f2713583d01d2a. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/92d722e1-c8a4-4b13-af3a-d08e96e5fa55.json and https://artists.proofprofile.net/proofs/artist/92d722e1-c8a4-4b13-af3a-d08e96e5fa55.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
50 Best Baby Songs, Vol. 1 (Favole, balli di gruppo, cartoni, classici e ninnananne)
Il Natale e i Bambini: Adeste Fideles, le canzoni tradizionali e i più grandi successi