thumb|upright=1.35|Panorama of Florence, Italy thumb|upright=1.35|360° interior panorama of San Gregorio church in Breglia, Italy A panorama (formed from Greek πᾶν "all" + ὅραμα "view") is any wide-an
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 0xdd1142dce374ed992e9449d414b871d75d9d1edd05364983d44e3a2c7c16505c. 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/9ae6772a-303e-4ec2-9dc2-400efbe5d2f4.json and https://artists.proofprofile.net/proofs/artist/9ae6772a-303e-4ec2-9dc2-400efbe5d2f4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).