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 0x309f6366ff3db8a0c1bfac2b5430b1f94ea3e3ccdfd52a7bafdee5e6b890c8d4. Chain 2 (Bitcoin): anchored in block 953695 (2026-06-14T21:42:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6fa5b746-241a-4b1a-806f-bd5dad7f519e.json and https://artists.proofprofile.net/proofs/artist/6fa5b746-241a-4b1a-806f-bd5dad7f519e.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 0xeeecd650f27c1889fb9e03b65ad3b4dcaf1732c2aa833770e0e3d423ecd41589. 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/QZ5AB2484364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5c0025349da22b4b8cda8d013028f0965578210f6997d662970b4da24507c2. 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/BRQ6Q2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475c0820c5e9a4e59afe35b1c2de5748bd21a9d994e93f001394b5d001568f67. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZTPX2337630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1bd877b53ee0badf33f14430bef7d6cae1387a64776d297f48a8064724d3b9. 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/QZTPX2337631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa59a42d9238e9ed027361873edc566f2fd788e9c8b39f4030fc5865615a8416. 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/QZTPX2337632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc066117a557cc04e5e73e7385f5be0a3a24f58f93db8bb2fa7cf17f8c318a5b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTPX2337633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd39fa9aa53f78eee45c09d4675846f00aeb99d395a5a0fcc948f9834b11e386. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZTPX2337634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3cfb8fc1e7c8c7efd8b727e65c6a81c9fdf9284c322fc0250b5372750ee63c9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNJY2304303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac88b9af977a7ead2e1dbd754331c9785a1d671add6709c5215329fdcfc5deeb. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/QZNJY2304304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x366621b469eddfb451f24998243f361008ba5331beb191d4b876907bf7769d2c. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZNJY2304305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36768c538c32f3f15beba9349a1a75d1abcacf3ee16346fe99ef3da6d5a2d0ec. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZNJY2304306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb199ec584a7e3f8a44d5ce9131782560bdb3211f44f66d643ac778d6131f194. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZNJY2304307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc590e297c082992aa897d970e09c82eaf3f2fd1c41d854f6003b1a1efd840027. 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/QZ5AB2385400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c8a4e497db915c43b35d3428653d6ee04d86874e5cdcbbc420dd6c4a051197. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/QZTVM2239884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f6ef620153cd0bae3be71d04aca9cf9f6fca26e9030849942b210fe539d712. 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/QZNJZ2250714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345d406fafea6a058ec1a6edfa115d79246af0257e21c6f9dd8daf8ff5fc60c9. 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/QZNJX2286252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13317280567e9f3be725a7d5454425805f105ba1f72c48a9ad995e5bd393d936. 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/QZNJW2265219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0bd98ae6722935a60f3949458a8bf09d8192f1313ffca62237e967e52654c3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNJV2261879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf04577d9c213daefb8c6012f2d326f3418e8816251a583e5a3bd1c2f901fd41. 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/QZNJV2206937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b44fdf00d370c3a4d34232b942ddb46ef511c70fa61191bd34ab6816c828d7. 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/QZMZ92274820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3626783a63ed4809b1f363012533f8fd0c33c63cce76f9f487cc6de36eb363. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZHZ62223005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22b3748e3930eee6081b9db37031b5b277bdae1ead64b5014c50283976eef9d. 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/QZHZ52263482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b94a11a93ca9174bb99b3166596b32810d91a6528a7f1cf3eefddcf87b84b08. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/QZHZ52228054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505c50215020f9f57feddeb44bccc53388da7966329fbc3d59df93ab0f12913a. 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/QZHZ42228479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8433c1cf7196e626d26ff72364d1615053cea85eae25a20de38251dea167d69a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BXNM92400001.
Maquininha - Solta a Voz e Vem Com Nóis, Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd57a8ba9a4b7ff72a87e194f8d61d691f87fdae430493b36ef3be0ab2ae4cd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BXNT62400304.
Chuva / Fotos / Lendas e Mistérios / Sem Ar - Solta a Voz e Vem Com Nóis, Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f72f86197876c2c6d8641a7785e8cfb2290bdb0d0477d03ba69446ff3232753. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BXNT62208834.
Nasci Pra Amar Você / Fala / Eu Mereço / Sem Radar - Solta a Voz e Vem Com Nóis, Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f7a74358c9a5b990f155ef9e4299532a92740eb6d52864a4b772d3bea5f6d1. 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/BXNT62208955.
Se Tocar Bruno e Marrone - Solta a Voz e Vem Com Nóis, Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1910b036ed822a55bf1861ca3a03f819432d0d4e4ea6d456ca1eb4b628a08fba. 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/BXNT62209030.
Duas Camisas / Amor a 3 / Assino Com X - Solta a Voz e Vem Com Nóis, Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09434b05549ddb7e1e9a1fd3d6f2f237c569f9ee2774c97111c37b360df929a4. 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/BXNT62209427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd57a8ba9a4b7ff72a87e194f8d61d691f87fdae430493b36ef3be0ab2ae4cd. 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/BXNT62400304.
Luz Da Minha Vida / Blusa Amarela / Quem Ama Perdoa - Solta a Voz e Vem Com Nóis, Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb023f3cacf12bef211ab5710a49c930e780bf83e825559fd585fbfe31d8ad557. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/BXNT62400389.
Ta Tarada / Ta Doidona - Solta a Voz e Vem Com Nóis, Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1949c2d6bd9eb104333f7e76471a81e7c24f44b8e19c3dba2b9a08d4deb59f28. 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/BXNT62400583.
Desejo De Mulher / Difícil Não Falar De Amor / Somos Apenas Um - Solta a Voz e Vem Com Nóis, Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a50513ae76f2fc6fb3b8cd4289ecd859c7c9fdd5ffaaf097d2f69be15ad9d5. 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/BXNT62400713.