thumb|The logo of Tate designed by North in 2016 Tate is an institution that houses, in a network of four art galleries, the United Kingdom's national collection of British art, and international mode
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 0x527889ceee42800063ffbf03d7f6f56e55e39e4db8fb43e1e49d88705e01862c. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/50642803-2571-497e-8baf-795a60d692a5.json and https://artists.proofprofile.net/proofs/artist/50642803-2571-497e-8baf-795a60d692a5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).