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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca6927b960ceff7dd275f1110ea636b404b759342231cc2c28cb133ef31e454. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b14c85e4-2861-43a7-85ab-ea70244cedc7.json and https://artists.proofprofile.net/proofs/artist/b14c85e4-2861-43a7-85ab-ea70244cedc7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Som de Chuva para Dormir, Barulho de Chuva Parte 1
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977916a2b926286a6c632ee1ea3eb4b9d109525d3b19117fe16d493156671220. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:04:55Z), 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/BRTUK2116101.
Som de Chuva para Dormir, Barulho de Chuva Parte 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe275166d7a2dc0f55eac3cf5ecf8cb753f1740f2be28d4efbf416ecd43354f3c. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:03:35Z), 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/BRTUK2116102.
Som de Chuva para Dormir, Barulho de Chuva Parte 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5392488872f0ff874da9405b555857545b23378c48806527c2d26db697503043. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BRTUK2116103.
Som de Chuva para Dormir, Barulho de Chuva Parte 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c4cd0391a2872db7a65871e1c4410dc60964a7d8b6a8a80977aee429cf05f0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BRTUK2116104.
Som de Chuva para Dormir, Barulho de Chuva Parte 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d02eed933ba5ed03d9b9b0e0789a1e68df24d5121b10647b6d46ebe30cb06da. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/BRTUK2116105.
Som de Chuva para Dormir, Barulho de Chuva Parte 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e9200abade9851a44f2b8bb45c5d822a8442045d4f8e4af520f5acebf1c18e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BRTUK2116194.
Som de Chuva para Dormir, Barulho de Chuva Parte 7
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd0dd46f8b0e5877c057999ad0d3c7524df08713e48f29b202924d9df486a5f. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/BRTUK2116195.
Som de Chuva para Dormir, Barulho de Chuva Parte 8
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70527dd72700c0bd3c2c7c753b2b7fbafa4ee972b4391455a7023317765ef37. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BRTUK2116196.
Som de Chuva para Dormir, Barulho de Chuva Parte 9
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45a8b4e518d40a105eaf5ba8f37824161d0fa94911a5f6ea00c3dbd846be8b7. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/BRTUK2116198.
Som de Chuva para Dormir, Barulho de Chuva Parte de 10
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42501429fc987351351eef260e3c523c6d1890a3d13b29944eb4443bb42d0cda. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/BRTUK2116199.