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 0xaa6f3c2c29f9e6f3e9183b7bb98b4c787cd84271b6429e7f5086341917a8ab20. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cad850d4-116a-4749-8e66-6f04b5b8066a.json and https://artists.proofprofile.net/proofs/artist/cad850d4-116a-4749-8e66-6f04b5b8066a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Jimmy Phillips (SE BMX Bikes Team Manager)
RIDE THE WAVES (Mighty Moe's BMX Cruise)