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 0x67053e71fb23b2b4c79c53c9f61d00c90125ef51b8daa9c6f1faddbdfa7866cb. Chain 2 (Bitcoin): anchored in block 953678 (2026-06-14T19:23:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/638175fe-5e51-49c6-8c29-2e6a0645be7e.json and https://artists.proofprofile.net/proofs/artist/638175fe-5e51-49c6-8c29-2e6a0645be7e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Caneuon Gwerin I Blant / Welsh Folk Songs For Children
Mi Welais Jac-Y-Do/Cadi Ha/,Tasa Gen I Ful Bach/Y Ceffyl Bach/Tali Tali/Mi Welais Jac-Y-Do
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 0xfdef954d78dd42408dd5b41e42e1212f6687aec40afe5a7d98ca74a7bb14e352. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/GBCFU0300355.
Ffarwel i Blwy Llangywer (Farewell to the Parish of Llangywer)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9e0fba2e5d4e77e7d1d2a849a7ee4729b69225284fcff44e1a68b1688b659c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBCFU0602340.
Goreuon Canu Gwerin Newydd / The Best Of New Welsh Folk Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d44aa5eb2b5a0281d9229e7f6433b66ee335408c9ffcbbb3933c0f854002511. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBCFU0300347.
Gorau Gwerin / The Best Of Welsh Folk Music