1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0xab8a9286beb5d3ed7e58009b86b85a1423e795b60020a701199cf90f9e436ad9. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1ef18928-9ae6-415a-b88d-7aa653bf5a56.json and https://artists.proofprofile.net/proofs/artist/1ef18928-9ae6-415a-b88d-7aa653bf5a56.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pack Ihn Ein (Lalalala...) - Radio Version
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 → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x038f6239a252e497ec3fd85b5d0fb76ef0a8760f40b89e77bb7f9d107c82abe7. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/DEA340100751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd117abeb2adcecdef7faa6365e24d0a9c86a761e4238f21e19ce4b3361b8cef. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEHK92104563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfca2855064aa6c634be9336738fb321716c132db7ee3af2aa696fc68299a1f. 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/DEHM81900760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20cc4e100dad5448f5f5192791645b476307a4ec3863dca0b03eb2e1ec492e99. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEHM81900761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885e4f7d1e0e2b838220d89ba56037128c80afca3342f12bb188a4405fb6814c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEHM81900762.
Summerfield Records präsentiert: Mallorca @Home
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580db14bfbf75332f2b9397b0a877d7ccb5f00621d5cc548ee005291f11d0812. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEHM81900966.
Dicke Hits und Kartoffelsalat aus dem Märchenland
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b2d57e5967bda0f01a432080f2cff4ea5463c2f025a8d7c558ffdf5c6044e7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEHM81800643.