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 0xfcdf5915da521fb01e4c40ff4e1c46b262af065f7addb344689e2256783fb3e1. 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/00fb3c7d-6bc2-4472-aff0-a04fe51f27fc.json and https://artists.proofprofile.net/proofs/artist/00fb3c7d-6bc2-4472-aff0-a04fe51f27fc.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 0x06cfb1d7773b6bc7ecdcb1199f8dfe4d53cf8b8d0207fcdc97c96f22dc386a53. 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/BCM9B2400780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33701eaf050f9f703c7f9e338aafd165f55141d55609386865af9bee17c2bc1. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/BCVI52400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f97a1be75bb3a07a8d5d92f3fd581922d65bc4060594aab8df1649ea286e752. 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/BKL6H2400039.
Visão do Martins (feat. DJ Fb de Niterói)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b276ea9570deedf6672ce4efc6010ddee0e51eef97cf8f8c9659ab34348b55. 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/ESA112436924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739e351d7c37540c2b32e18f161684fd96afb390f8455f8f7cb81a8b88092a58. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/BKL6H2400017.
Montagem Pique Mulçumano Vou da uma Rajada
Novinha Vem Mostrando Seu Talento (feat. PL Torvic)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae42174a0e1109ed11b323034371c8bf723fb5fc589c70090153a4a845e5b09. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/ESA112428929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae4c1bb0283140d3f89feab74d0b99a502919687cafd09dbcf9c6d8b3086362. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BCDHP2300071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffcb09634064ae0940df5bcb3131d62a96d2b9e94c8da2cd78b7fc46f13d75ce. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTVM2436442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea356e033b45a9816581c7b6ff7daa80a321025e0145deb84c0c0452ee1cc2b1. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/BCLWS2403180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8d6dde2da7cf620838a47102707c1a72dcbc5fb1cd0b28f929315d508a4a32. 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/BKFNX2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85bccdf1495831c1497a8e5a84341ca9cdda83c6d5b15e55254e88dc5ee801e5. 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/BCLWS2403174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7ef717ae5d50c11f20156058045cfe9a95e253316f72afd7c40756484a8c7f. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/BCLWS2403177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e716e01398d397440e5cd43a9b1b846acd72378cc195b0f9499a5f61d44cec0. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/BCLWS2403070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953de494ae45d534df2c5d126824b947f87d58969ddb37b31e41046c64770c2d. 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/BXVDX2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f6b5b392b697a7712f9368aabd581302a6ea599ab5d5bbb9bdf29291fe2e3e. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/ESA112558666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06e50d0eebf3e7bf01e80f4ae484ebad9855980a2a40a26f4c8b440f27c1b66. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/BCLWS2404259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb287bbcbe6362dfbd1178b10234554dae5283b32eb327af00821c249cc8adf2f. 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/SGW502219287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6bfbd51c012199078e7fde498872b739c85914aa3858fbd616f118ded9655b. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/QZN882425163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe203e2e29e40144ff8936e57ce79cbf02dd77a8a818370ace52c706aa54ca62e. 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/ESA112455058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893fd6fef92c91e307aa59379edc06a6df9229d2e0c545ef8f424eb275ede455. 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/BC71O2400312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ddac807248b7c3ecf9044af5858c90ce038cc3cb4eb1b7b40c9529a4946e41. 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/QZW9L2415002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2822543f02c07b2c944d900cd3d65a04460ac7dc685a418f3990d335fe1bf0. 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/BCM9B2401922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40efe4f4383ebf41a6240f684f0a2c3dfd2dc8a65eaaf89e4b0b426cc82e469. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZTVM2436422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293c52d9dc6c08062f03986073b610141e01aa08f526088d2737378709827a28. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/ESA112447945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049844e79086194808685541937803f5ff541f541e09545e773da300b5293eee. 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/BK2OA2400265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1657e007eafe3611b7d8ef8cbede5c30d83251ce4cc5d3b149130abdda6ba7. 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/BKL6H2400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa419538376f6e53d2dfdf9b841444e89fc2341c06f16b573c52d2d647b85a6c0. 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/BKOUP2400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aadaca50f865101c4f6382fb84a79cf7268248f4156464e0aa9b02425fa6399. 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/BRSME2201053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7cf7daeae06f725f2fc70a493703d3149c412da5e67ebce767dd238423afbcb. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/BRD1E2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d47bbd559ff0c891da6aa8dbb907b540cafbe8ac77f645cd6d4d68592fc3cb. 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/BRD1E2100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb92c1f79a1ad4546a9de28d04e77cda17903f74a7cbbf62cb23424e5820ab35. 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/BC3PG2303827.