thumb|Windsnap in the Bavarian Forest National Park thumb|An old dried out windthrow. Ystad. thumb|right|A large-scale event in the Sangre de Cristo Mountains. thumb|Juniperus virginiana var. silicico
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 0x8a9648b8ddd4d9ed547321c702ac3b80732e3869b2823af3e20329976f8ac330. Chain 2 (Bitcoin): anchored in block 954134 (2026-06-17T19:41:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7f3b6732-51a4-47c1-81b9-f6fa6205dba1.json and https://artists.proofprofile.net/proofs/artist/7f3b6732-51a4-47c1-81b9-f6fa6205dba1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).