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 0x613e2b4a5f5a6d3ad5170830d4922e6835b498b18f9871744f28a66e52759ee9. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3e669ce5-fdda-445c-84bb-ae7fbb8fbe40.json and https://artists.proofprofile.net/proofs/artist/3e669ce5-fdda-445c-84bb-ae7fbb8fbe40.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Flashblinded - Amarcord 'Orange Wine In The Glass' Remix