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 0xc3b83e19b4873cd2ac13c2673a900d7984c833d5c323578760480710818afd6f. 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/c0969bab-9a67-499d-b253-47497093b4a5.json and https://artists.proofprofile.net/proofs/artist/c0969bab-9a67-499d-b253-47497093b4a5.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 0x08d4489aba5cfcd7b02610dab7e0b0fcf22cd9d916a88758dbb9444c584accef. 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/BXHAC2300056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd63d6abebd34bf587e6942b88b86d1daca17cf61593ceb8658003baa1056d42. 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/BXHAC2300121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c438295296c8eed3b0c267bb6c7ad41e19a085ee7b75b22cbfe008e3a118005. 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/BXHAC2300169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f0e35f8be6e85a5f119d71e981fea9663b2a8a07790e8434c1d8e09b250a5c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BXHAC2300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c438295296c8eed3b0c267bb6c7ad41e19a085ee7b75b22cbfe008e3a118005. 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/BXHAC2300169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd63d6abebd34bf587e6942b88b86d1daca17cf61593ceb8658003baa1056d42. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BXHAC2300121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d4489aba5cfcd7b02610dab7e0b0fcf22cd9d916a88758dbb9444c584accef. 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/BXHAC2300056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f0e35f8be6e85a5f119d71e981fea9663b2a8a07790e8434c1d8e09b250a5c. 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/BXHAC2300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7c4db589949f205fb3647b80963c4931f7102eddc411be42cbc5e623c1bb93. 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/BXHAC2100136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe943c65916b96d49df41b2d93193158a88e1e1f2d20cdd6864281d671de4552f. 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/BXIHO2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcafe496f3af239f57ed0cd837a96f37436982e131bdb42f7541ccee56c4a5392. 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/BXHAC2000043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2366d9c5c16ce47bee252d4c3353ed6460f49588a409525104d9a95d276d9670. 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/BXHAC2000083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b36eae7d5c87facb1c313dd67ae5e525a6ffbd15d3fca84f43873a686d5f911. 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/BXHAC2000082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97aaad4ae315ff70f2dfa714a7e05ac37b1ea7abdeba6e586a0eba9b1f032fe5. 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/BXAKV1600049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b71f7353dbfc234f6d8843532475eac2fb6f9a17cd7a4d4fce5ea9604c56966. 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/BXBGA1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1afd3764f9317c525b0888f8fa5f5bc786224250220ad08a49837b0c2d414ac. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BXBGA1800001.
Que Sorte A Nossa (The Voice Brasil 2016)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb071e04a28ee22f6edca6b2de26f6d552770b55e1221d673984a2c22759e9b43. 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/BXHAC2400143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce74f64769af7347624eefc42c4427cf15306dbe5319e4ce554746b4eb7cc51. 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/BX9ZT2400631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13fbcc068cc6ff17d51ae8c700a595a785c39ef14359b7cff01706144acb3550. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRUM72300405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e0fe1fbb61d958bec457a0ee3e4213aaf59110c631372814e6c56a43d59919. 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/BRTRB1997916.
Sandy & Junior Medley: As Quatro Estações / Desperdiçou / Quando Você Passa (Turu Turu) (Turuturu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75bf91154d7caa80c30e89d2379e7f36a931d0d4a37df7b5bbeaa829b2838b80. 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/BRTRB1998022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced2c8dc9b4112a6727a8668aad49535b074aa400571bb676f7c9df923ffa969. 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/USCGH1888797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73be74963b50429fcbbc8cefa6091a486b941440e4e5bce1400f87796d7c56dd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USCGH1873053.
Malhação - Viva a Diferença - Versões Personagens (Trilha Sonora da Novela)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744a1cd9809f49aae0145ecdb8949f11eae8290eaba8c758fa0d3c0444817d27. 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/BRRGE1706062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdba3d2a50cd3c3b2998eb950eb320393c276f304c645f334558f63d5cb888ae. 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/BRRGE1911098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfef5ea125cb101443e554ef0d49e6b029a4de4c0c01b99886fe56021205f5f. 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/BRRGE2007826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc569ab5809193cf90a15296c9a5a799941a3f24f3bc26e4603c1c9f4d0b9c293. 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/BRRGE2007828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f7caf00889769645be5626c54cacf0eebc745f1108a700809ace3f58769057. 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/QZGLS1993966.
Sinônimo de Amor É Amar: Música Romântica e Apaixonada / the Best Brazilian Love Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b4e7905c38562021aa2af3521b4d56f339d714dfb0dfcfe6e2fe09038f2f68. 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/BRRUS1400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2abbbea7eee62cd3030b69073f9d5a7280b42f013027c6910c184e7854b7533a. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/BRUM72301234.