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 0x027a9bddb0e03529aa52e478681d44b46868fa91f97536a17865133a9bf1bd7d. 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/435f4a78-d709-4897-bd2e-2049b8b98c82.json and https://artists.proofprofile.net/proofs/artist/435f4a78-d709-4897-bd2e-2049b8b98c82.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 0xa846f5a4c3d9366fd542163f7668e782686fd13ec5dfa0964b0c946d5af202f3. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/BRFXA1500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08060a9bc756399087e353b9be2d0ac552e40297d727e8b9354bd46b2a85e75. 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/QZ5AB1625774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0b2328f6ffe710f1cc39ee36420a083274186f840fd21e2fd24b96d4055601. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXWVW2100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65900e92feee88377924123c561d1570fbbe44f023b78a3b3592ebcdf8df94e7. 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/US3DF2204457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5748f58c31ca25f5691ae18a020fbdf9024a6e9f7283f0d5d1c93484a8b7cb. Chain 2 (Bitcoin): anchored in block 960155 (2026-07-29T22:13:32Z), 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/BC8DD2200166.
Para de Fazer Pirraça o Mulher Ficar de Boa Vs Pega a Bala Halls X Arrocha
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf201de7bf5a65626d7e851e2759a883c839f20d3edada3c5664cb723b4bce2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BKO672400018.
Você Não É Professora X Nosso Tempo Já Deu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb1fb5bb2ecd0c393c7ca736181f233ef23dfa58b3b40218b5d4676a1c5ffde. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNJX2419347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4facd9bc069e0aff73d14a00fbfc68cbc940843c734b29da5cbf7f56f916bdf. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZNJY2477666.
Cabelinho Disfarçado (Medley Consciente)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a6be37f66f1feac5be50874b7cf5cb2fe27eb19ea24bca6a2afc2a4c582bcf. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZW9K2495126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8fda4a29d0d4c4bd20bfe8e11abda4a20bf43a0524ccd27d5e90347209d7ea. 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/QZW9K2495132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60cdf3a0c36237cfa1cff051b4de733bc8a361ce12d321db4f52da799952592f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BCLXC2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08447bd80e74f21bf8cc9700b2fae71c4c0e689026be5f7e4e6acfa0e14d3e23. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/BK2242400489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ad7a6bcfeff808b7e0029353272f3710cef287945dc6509aaf683c7a427e15. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BK2242400479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134934cf80aba80689a3d4dcfd70ab8b79885f7d2b2392e2ca25f7488b01f8c7. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/BRWMB2100503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc751e568332d69823ad794825b6a25804b4ecf952960496596c06ed7c29eecac. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/BXP0K2401791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225adbebce8274dcb253f12473445065aad72a8ae0d33864f0964e289b4ad002. 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/BX5EU2200059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9394edb3ebd7ae616427508a39c7a1543ba3eb8f49284c0a3c603fd777f8b1d4. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/BXP9D2200117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f6ef5d1d76a68d9ddbef290d47c8170385f7d93abadb3f0093a175aa7a32b1. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BC3PG2331240.