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 0x122e20af464630c1bda87827b80633aba9879a9a67ea995d03b69d2c5f7ee596. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/144d1bd4-8467-44ce-8163-1c2e00dffa1d.json and https://artists.proofprofile.net/proofs/artist/144d1bd4-8467-44ce-8163-1c2e00dffa1d.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 0x9ed0940292f5f25b650b587bbddf0106be2610e8de984bd3302835f3a80dfb2e. 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/QZEQU2045905.
Festinha Clandestina - Eu, Você e Mais Três Amigas (feat. Mc Mr. Bim & Mc Gw)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e3ef140cc16013991d59282ac545cff793c0ee812b72c7ea2035b63b7fc0c4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BCDMP2100053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5b85527fff97bd46bf2d77a2afa0e90739700dbcaa1bf718e6509bd5d4bceb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BCIH82201666.
Vira a Cara Pra Parede (feat. MC Nego da Marcone & DJ Higoni)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062c34ea548f5246603123a7fc8ab75340a5cd576207e3053eef52d2b825a68d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BCJT12200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee9dfa6b0e062a89297a5d6c181c6f4f32711d703d3d8f0dd40da758bec1cf8. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/BCJKS2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428184efd1ce3c63c852183a9b0da7f407b3e1d93c418f39cc70fa85240b7a80. 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/BCJKS2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1751c4af1ee91ca802514d262800e9ab65019d84cc98c7bb85f666422264b1e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BCLWS2402205.