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 0xa3ac3a3006c3531ecb34117a46f0c00d9d1123599bf73ba8df6e1cb63ab3ad54. Chain 2 (Bitcoin): anchored in block 953717 (2026-06-15T01:05:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/87b6b82a-2b10-474d-87c2-d8eed8e4decd.json and https://artists.proofprofile.net/proofs/artist/87b6b82a-2b10-474d-87c2-d8eed8e4decd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Berlin Selections 2022.2 - the Sounds of the City
Nothing But... Fuego for the Terrace, Vol. 15