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 0x85172feacd6608a556e7eb530f28a43c1fceff48376394d62082267348c73ddd. 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/1e141366-a14b-4374-8a4e-553754b7cf66.json and https://artists.proofprofile.net/proofs/artist/1e141366-a14b-4374-8a4e-553754b7cf66.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 0xb161e1ccd2df8d8934337501c11ab8cace9f33aed3e7b3c687c41e8d02ac0f20. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BRTWM1300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7ca68e724073cbec16b5c3a583caa6d7415b5b76cb26a2eb4803e1c786910e. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/BRTWM1200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3536b1cfe0a5b40b60babeb0549dde58138b4e5cbffb8fe47fdcb35578d365e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BRTWM1200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d15bbdcaf775380db276efcf59b9b0d0b79cf536c1205bc905ed52fff41ed82. 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/BRTWM1200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa87ca1930aa5164e6c83f40218394906b4f8e3348aa907c361deae581306017. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/BRTWM1500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b848501b1c0a27041d4104ada50ef10a33f5a85055886434e1367d80347fb81. 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/BRTWM1500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b46c153901813d4a176e0fba0f663dbb7a3c5784a6b8c0f088c1c0cc0634b47. 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/QZFZ31920282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d306c6b8dcaa194d7370f6079349936e9f907f101679aa2ecd1b2d876507f6. 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/QZHZ52166802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a383fd3ccfc0236c5a7f0236f5e8b8dbac789197038bb74e098638b337272c2. 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/QZHZ62111496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae689eff01ec7c70028153193ce092a32cea955b2fa7effa16f405ea024a7215. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZMZ92165339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3561e200f66598dbb5d43bf068f99f79b932eaa04e1a7f52cb6ce1b6f17631b. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/QZNJW2126965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794418492d33c79b8626dd461f88b12207e00dbe6a479e10d88cef3a5cbd7166. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZHZ32223655.
Divino Companheiro / Quando Jesus Estendeu a Sua Mão / Se Isso Não For Amor - Cover
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92abc774f6c59b3b3b2b54c185b192a5ed8e040931940df229a41b511ca6971. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZTPX2367887.
O Homem das Mãos Furadas / Dia de Pentecostes - Cover
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee1899a222aa0673a792316ad43c006b34d02b596295a26d850634d30c8cc54. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTPX2367889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056345c2978f5ddb9efd55ccda91ba198e3d9f98c666f9437df5a252c6425972. 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/QZTPX2367892.
Tapera Velha / Cinquenta por Cento - Cover
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9970c09f3be28d41a1176f42a24ba53ec23e5ff7cff9897a292cfd522e99766a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZTPX2367893.
Divino Companheiro, Quando Jesus Estendeu a Sua Mão, Se Isso Não For Amor - Playback
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389925c5fea577b4f6cdd1e5612410861426658ec4846f9774594a7016f44df8. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZTPX2396854.
No Controle de Deus / A Cruz do Meio / Apenas Palavras
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a0fde5f11d66ed85d777b238b234ebdae0259bb4946d30a8b8e2bb596a9c94. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QZGLS2425679.
Valor de uma Alma / Alma Cansada (Cover)