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 0x68f9b33c1856c71d5e778bf4238f62847d4b0244a6cfdff94c88b2bd6b2bbf4f. Chain 2 (Bitcoin): anchored in block 953978 (2026-06-16T17:11:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2b76cf4b-b1ed-4067-9360-c1b61e31b3b3.json and https://artists.proofprofile.net/proofs/artist/2b76cf4b-b1ed-4067-9360-c1b61e31b3b3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Matrimonio a Parigi (Colonna sonora originale del film)
La musica del buonumore / La musica che non c'era, la musica inutile
La musica del buonumore / La musica che, probabilmente, sarebbe piaciuta a mio padre
La musica del buonumore / La musica che c'era