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 0x4eb889027d17bcd006bf6c2422aa01645ba60ede23c1d4d312d7d085cb23a0c0. Chain 2 (Bitcoin): anchored in block 954588 (2026-06-20T19:15:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ba46cf74-0207-4161-a248-b5de2685e829.json and https://artists.proofprofile.net/proofs/artist/ba46cf74-0207-4161-a248-b5de2685e829.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
In viaggio con la banda EP, Vol. 2 (Live Stagione Concertistica 2020/2021)