Paros (; ; ) is a Greek island in the central Aegean Sea and part of the Cyclades island group. It lies 8 kilometers (5 miles) west of Naxos, separated by a narrow channel and about south-east of Pi
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 0xdf64f8911ba37ffec7d41e889907bbea3aed55b38dab22b9df5ea0467de09345. Chain 2 (Bitcoin): anchored in block 953695 (2026-06-14T21:42:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/720923e1-c4a9-4e12-8a8e-1da5a9662d1f.json and https://artists.proofprofile.net/proofs/artist/720923e1-c4a9-4e12-8a8e-1da5a9662d1f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).