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 0xca0c141bbcc353a4169fcbccf85c55ab6db8f6aa1f0c3c2e8d08aa5e14bbe05b. 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/b604d22f-a46b-4e2f-96f8-4e97e2f1fe17.json and https://artists.proofprofile.net/proofs/artist/b604d22f-a46b-4e2f-96f8-4e97e2f1fe17.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Check The Czechs! Bee Gees (Zahraniční Songy V Domácích Verzích)
We Are the People (A Tribute to the Angelic Upstarts)