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 0x64ea9a12edc6351ce5bb6f20b7b1d2487ab5a297aac3bf6e55b9d5dd77e33b99. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/99b4ef11-b019-4f91-9208-e594e1153c09.json and https://artists.proofprofile.net/proofs/artist/99b4ef11-b019-4f91-9208-e594e1153c09.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
This One (Break Your Neck) [feat. Kaso & Tangible Two]