thumb|upright=1.5|Euro banknotes and coins Money is any item or verifiable record that is generally accepted as payment for goods and services and repayment of debts, such as taxes, in a particular c
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 0xc3d6865eea4d102f8166ef093718927f323956f92b5765bb60571e78eed7b882. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b9ed50e5-d190-4e3e-8e82-d07efcec206b.json and https://artists.proofprofile.net/proofs/artist/b9ed50e5-d190-4e3e-8e82-d07efcec206b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).