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 0x031d3642ebb0a12455d212c9b9c8ee73b4f759a8f382ec49d74cc6e782c3c14c. 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/03b427d8-b1d7-4990-a0e0-f8585f5a1bc0.json and https://artists.proofprofile.net/proofs/artist/03b427d8-b1d7-4990-a0e0-f8585f5a1bc0.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 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 0x4a62013fbd5165f6f1baf614e99d4a69c094b3875da1e87e111cacf21849070a. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/BCM8O2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f865c0b080d2ea7bf9f575faed4c071dd47951ead173646ca47365f57ed3892. 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/BRUM72301981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7190429bc7fb9c147274237054ba65876237a7993d561f9d3102f299e9f0a7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BRUM72302221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71060d521fc80ca1d6a964d49b26c9a5d1a18794c10fa104ed8255eebffb8743. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BRUM72400126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9164421cd8d35ca6a9fb7326750c67d675129facdf28b71b4ea11229d22736da. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/BRUM72400288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9f189f16ff5b5ccfdf68d50382e840046ad2d22c5dcb3bbbe0f3bf4fa18f6e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BRUM72400519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f865c0b080d2ea7bf9f575faed4c071dd47951ead173646ca47365f57ed3892. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BRUM72301981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26edf1c43e04c71acf3c6bbc01b745e50e4a15364a340e8cf2c2391bdb04a481. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BKNOT2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b0204115090918dc6a5f3dfc4a9791fb0e61e6ab01087dbfb72817589f61dc. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BKNOT2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6e2821b74c2d81a6e467b8ffbb74f53ae23e51079b292346d3e439c5f6526d. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/BKNOT2400015.
A Gente Gosta Assim (Acústico) (Clipe Oficial)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e104c8eb3c3b812020364652b06b02561bdb3461c997689769034e2da19608. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/BKNOT2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6e2821b74c2d81a6e467b8ffbb74f53ae23e51079b292346d3e439c5f6526d. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/BKNOT2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68ce21c2916608f7b7ce81d414baae61095251943a3a11db683c8e2c56caadd. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/BKNOT2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bac7fec900315ee6979b89a4f0811527b0a81f92c10f1a36a10b8d001ae9a0. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BKNOT2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5634996748dd257e58b0639386af57a7f871448e20ed54d8fbdd3ee29e4f81bf. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BKNOT2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262df3a9a582f05c5ded33391eee987cde51991269272484ec4c2ed22431f67a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BKNOT2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e104c8eb3c3b812020364652b06b02561bdb3461c997689769034e2da19608. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/BKNOT2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3acc59d88e81a6938b2b8adc8d3b5ae564475831a2aa58c7a36a1f74939c8bb3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BKNOT2500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26edf1c43e04c71acf3c6bbc01b745e50e4a15364a340e8cf2c2391bdb04a481. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BKNOT2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c95163c91c07e7607e90f8417f31bf186b598167c33847ab91261e5127f2c32. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/BKNOT2500051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543fe182eb669a45a1e0d0da682cc6b76efffda72394fd209105baa22492b0de. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BXTMX2000060.