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 0x4d4f8df4ee070b60431d4fb52c693b5f51635a6f80d2ef59c51a7dfee7d9b36e. 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/d5b16014-f8d2-4f91-87b3-34293f4c1047.json and https://artists.proofprofile.net/proofs/artist/d5b16014-f8d2-4f91-87b3-34293f4c1047.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Out the Kitchen (feat. Lauren Déclassé & Bimmy)