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 entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc98ae8ef25cacfbf3c1364d08debe33c4e3504a51c50c159ad888b560a95b7. Chain 2 (Bitcoin): anchored in block 954055 (2026-06-17T05:51:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/43a1bda1-43cb-4193-96e7-209f65ae97d5.json and https://artists.proofprofile.net/proofs/artist/43a1bda1-43cb-4193-96e7-209f65ae97d5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Wat Ik Wil Met Kerst - ALL I WANT FOR CHRISTMAS IS YOU
De Kerstman Is Alweer In Het Land - SANTA CLAUS IS COMIN'TO TOWN
Help Een Ander - DO THEY KNOW IT'S CHRISTMAS?
Ring Ring Ring Gaan De Bellen Van De Slee
Ik Vraag Aan Sinterklaas Een Heel Gelukkig Kerstfeest
Kerstmis Vind Ik Maar Een Gedoe - ALL I WANT FOR CHRISTMAS IS YOU
De Kerstman Is Alweer In Het Land - SANTA CLAUS IS COMIN’TO TOWN
Help Een Ander - DO THEY KNOW IT’S CHRISTMAS?
De Allerleukste Kerstliedjes (Kerst Hits Top 30)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x673195b4913eaa40051e8ae150f558691901736f1ef06913abcfe65b327aa80d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLS240800365.