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 0x1d90f2840e6b6aec812275e23d3b94d3a8d1ecbd999d9d936bb76e915e81d865. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/14f2899d-d53f-402e-8cba-9cffec5dfbb2.json and https://artists.proofprofile.net/proofs/artist/14f2899d-d53f-402e-8cba-9cffec5dfbb2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Die Muppets (Das Original-Hörspiel zum Film)
Muppets - Most Wanted (Das Original-Hörspiel zum Film)
Muppets Most Wanted (Hörspiel zum Kinofilm)