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 0xb7e69f12d1c043744da0a5daeba57e62368cbbac87f12721722f9bd4ab5ff8ce. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/41003e8e-2a22-441a-afb6-e1695c0ff264.json and https://artists.proofprofile.net/proofs/artist/41003e8e-2a22-441a-afb6-e1695c0ff264.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pelastetaan maailma yhdessä (Earth Hour 2020)
Pelastetaan maailma yhdessä - Earth Hour 2020