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 0x7e63128669157a2d053cfa704b5b36c52f8d4bd0e6c1616be1e2b38c42302f34. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eeb808e8-1b8d-4c96-97b1-4f02e63d865e.json and https://artists.proofprofile.net/proofs/artist/eeb808e8-1b8d-4c96-97b1-4f02e63d865e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x038a4f9d998149cb8437f4adbfd71f1d0875cfda62972b3b674a8af1c703a397. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:35:33Z), 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/QZTPX2262309.
Farol das Estrelas / Overjoyed / Celeuma / Cria / Mundo Vasto / Casa de Noca / Coração a Batucar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7178963b62b4e2656c89586d7770f26fc136320ea8fedc615c40e5955048fa6e. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:36:31Z), 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/QZTPX2262310.
Cheiro de Amor / Noite Linda / Devaneando
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe304d9f41b107941c560b5bafff8021f217a401709b18abab1cf6d072536b31f. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T10:13:27Z), 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/QZTPX2262311.