Orchestra del Teatro Marrucino di Chieti
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 0x97a2f5555d51e5bfeb6e4c6fac3db2bfaffd27cdf3514f1d3cd616b135146c30. Chain 2 (Bitcoin): anchored in block 954035 (2026-06-17T02:39:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3c780b12-c817-4a4a-b5bf-9b0052a1789f.json and https://artists.proofprofile.net/proofs/artist/3c780b12-c817-4a4a-b5bf-9b0052a1789f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).