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 0x1943e6a9824bc3789e1c27c1874787e3ff06c7f4434e1c4100f208abc9796143. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff66220f-65b0-42b7-b8c2-9d580b6cbef8.json and https://artists.proofprofile.net/proofs/artist/ff66220f-65b0-42b7-b8c2-9d580b6cbef8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Window Pane (feat. Kel Killuminati & Izzo Kenpachi)