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 0x12379da5d2d75d566102aa1ad48f2cca111521ea54abe98ce2ac80cd0615dfef. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c287ca0c-1b57-4989-a2ad-78bd31643eae.json and https://artists.proofprofile.net/proofs/artist/c287ca0c-1b57-4989-a2ad-78bd31643eae.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Jan Douwe Kroeske presents: 2 Meter Sessions #1791 – Brent Beukelaer
Lichaam Zoekt Geest (Akoestische Versie)
Lichaam Zoekt Geest - Akoestische Versie
Opeengestapelde Schaduwen (Alternatieve Versie)
Opeengestapelde Schaduwen - Alternatieve Versie