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 0x15258a826f8ea25698cacf10b77291b42c88632d8cacb89e5381299199779179. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ba08f91d-8625-4662-a880-152f28cb64b6.json and https://artists.proofprofile.net/proofs/artist/ba08f91d-8625-4662-a880-152f28cb64b6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
20000 leagues under the Sea (feat. Sahnya)