1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe659cc44213aa50eae07f8d9224303e4e11e9909704c114b6a755c69c42eea01. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5014ea4c-2a0f-4763-aca0-07c922d9e67e.json and https://artists.proofprofile.net/proofs/artist/5014ea4c-2a0f-4763-aca0-07c922d9e67e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Street Collection, Vol. 2 (2008 Remastered)