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 0x87023fdf6c82ce948d7d5b394cc477ca05c317f15f44bc6ca15e4e2da0499775. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/08abd1fd-2ac6-44b8-9186-4cc3937db0ba.json and https://artists.proofprofile.net/proofs/artist/08abd1fd-2ac6-44b8-9186-4cc3937db0ba.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I Quit (Recorded live on a street in Stockholm, Sweden 2023)