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 0x91bebcd08ef84af9ab0547a71dd3f69b79cc0c838eb927ece10cb6687b1b4c61. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff035180-e6a2-466d-8c69-e7cf580f308b.json and https://artists.proofprofile.net/proofs/artist/ff035180-e6a2-466d-8c69-e7cf580f308b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ode to Sedemunder (Live acoustic version)
Ode to Sedemunder - Live Acoustic in Holland