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 0x4e87fa298d227dfe48a9ed838a46db08a07ec923e5f7458fac0e88c08bc632ea. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/73f01b23-399b-4f24-ba67-6f637b7ab4cb.json and https://artists.proofprofile.net/proofs/artist/73f01b23-399b-4f24-ba67-6f637b7ab4cb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dźwięki Natury – Szum Morze, Śpiew Ptaków, Deszcz, Muzyka Relaksacyjna na Pianinie, Medytacja, Joga, Sen
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 0x2c062b8116e6594c5b03e0ebc902437f444c4d311e88935480bbc3b1cfd24d18. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/PL0651801558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527b480c590d0c3336cdad15dcf099d43536fa52c15fbd1ca12ab0c230fcc061. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/PL0651801559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e51d70b7409e8aee66c887b74faa7f2e4d94ac8ec4ae34a9f299f3becc45dca. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:37:09Z), 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/PL0651801564.