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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44af1fc01662cdfaf28f6ebb4fe73121aefd540cd8db275b60b6a475508fc01d. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/06296e08-ebea-4ec4-aad2-595208618a56.json and https://artists.proofprofile.net/proofs/artist/06296e08-ebea-4ec4-aad2-595208618a56.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cover Mania: Tribute to Amy Winehouse Instrumental
Bello e impossibile (Dillo con una canzone!)
Le migliori canzoni di sempre: Tributo a Malika Ayane (Include versioni karaoke)
Tributo a Gianna Nannini: le migliori canzoni di sempre (Include versioni karaoke)
Tributo ad Ornella Vanoni: le migliori canzoni di sempre (Include versioni karaoke)