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 0x262ec8b1142b4b7e45ab265a7fbf081208593fc4c77cded9525a2d6d18d56e53. 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/a285e35b-7755-4564-a903-6dec15e497ac.json and https://artists.proofprofile.net/proofs/artist/a285e35b-7755-4564-a903-6dec15e497ac.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 0xf9330819988f70ab92f2a047921af5f7bb6fa41d91aca1e1bd8a40a46896e9e4. 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/QZ5AB1873763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd875ced363de557b8b8d7087fb54d998cd00236566c9561cc22839ddd13531b8. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZ5AB1873765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5c5523b568869241a48ae542efce75635bf1bca0ca4d41d1ae233e24bad55f. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZ5AB1873768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ddf7a1c72b472b848238470a82fd2af4b4c9daed40dc7fe51ecc1e8cf479e1. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/QZ5AB1873769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d10c1d74016f6764c7737850dcdaf85ea6e1d73212dd854a4343c24e539d8d6. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZ5AB1873773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c59c0a16aaccdefc9cae3066515442d34e80d5fcb664229f7d279263b3ecf4b. 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/QZ5AB1873774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f32b76359f6992b46af108511cc63cf5f649ee4713764088c454c6a063a2bd. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/US7VG1915293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76aa97d3011a8f3597d7711d74fb041d0b7be973e1f944bbe0f59faab45dff78. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZ5AB1873753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fda448be1d3ad8d776603390437a903ec58bef513a5d2802017aa68480292a7. 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/QZ5AB1873758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88827eaab914e790ede8fad3da8602154a23d8abf5145325c01bd06aba56eab. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZ5AB1873760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d34cf2066dedbcee4df20d62274c4e72f8178726e76a324849223bdcdb1f18. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZ5AB1873762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5b6698476850dd073b37f8c4839f6bdaae3f565c4425c7ec198af7be7e1a17. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/QZ5AB1873742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2742c765bf959d6c80e0ae10f4aeab30d44d16fd5bfc2043c134716621cde1b8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZ5AB1873745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0642eced180fad8501fd15f3ab791a2f74301972a79de6e8d4cbb21679342a7. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:12:44Z), 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/QZ5AB1873746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35864ca43f5a1bafc043a8efcf48028163779c5eaf16760f86a74fc41de7f1d4. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:36:51Z), 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/QZ5AB1873747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0ae0f9dbe8effcf30fc4ac85eabb2b9da9e370b690e18b9d1e303c36138f94. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZ5AB1873748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6d1387af17521d6868ff26820596f1d8d8ba5ba10b15818c951ebf7066933e. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZ5AB1873750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8eb6f9f0b7e5c45fea97f1a34e5edc66b613b3cead803016067351c3774846e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZ5AB1873752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ef256ac2a16b9cb1f13c5fb243d814a32cd5b80bc224f31124624acf8f2375. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZ5AB1873731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77afd637505ead0fc25ff5d80979d0e65cd423e22409c3a4da88c564256c845a. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZ5AB1873732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7deae080cf9f27a109494810bc22cf12c265b8e98351f846d764141b8f2a6d9. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:48:43Z), 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/QZ5AB1873734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7668d71ac693e8b2495d619cf854bb6357eaa7d9585d955dd576fbea169a4e. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/QZ5AB1873736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2e054f91166f07164dfac0661c2e808d80ca2a702d9bdbda33d7fd8237eecc. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:36:09Z), 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/QZ5AB1873739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259fb35f141c6862112de2ae73cb35a481c89aab33603017a14063dc85530e5b. 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/BRAPD1400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd500fe6d34d8e1748e320e392f09fd9764987247893237d920b4a63bb05b235f. 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/BRAPD1500031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80a0799005cd440d94cdb6e45fe03b80a5afe788c4e573621eff6e9b50adbda. 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/BRAPD1500034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4bbf34d322c2bd3309c518167c71d3037ddaa924ff9c75f4e78b0e715a186e. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/BRAPD1500040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8840e4da24ddc05d88d7d64d2f86290f49e4c9358feeb041f2d6802847455249. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZ5AB2081446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8bf57fb7dbacb9f1f2d62f4be9f4848f4dd50d7b1aa7399f06b8e0194f8729. 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/BR57H2100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e26b384c8787189b42ab953278eeca6e97ab5cf68c29134887a85607918a68. 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/BR57H2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae8526d44afe1813fcf8d87f3f514943acf0024f902d427e016729db447869f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZHZ42006382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52daeff807e919df3e136e09d9abaf15c1cd1385ac77e46940916ee50f9dab09. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BX81V2000480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f5e70410b4695033e4a7bdc1eb14ce35dc5d6d73bd571ccdb76c8d60e5c7f2. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BR57H2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d1f2f00bd516c6c7c8e22ba0c9be7d84f9000555274db02960fec435e7527f. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/BR57H2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0984ea665764a68ddd098ed3fe6d5b48644fb78b6079be7b972f3c7e0f4bf09c. 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/QZ5AB1822254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1b053e26155ba835db146f0f2c2a544331e82b2c585206d21aaf78350b52f8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRDVQ1500005.
Abraça-Me (Paixão Fogo e Glória) [Ao Vivo em BH]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae4831ec26c3a48f85ec5142ac1198abdd1c3487096423e3ee3238c13c09d19. 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/BRDVQ0800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbea63188eddbd005908d72858f2ab42758c63738ab2f6f9763456fa275f8c3. 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/BRDVQ0800019.
Este É o Som da Tua Noiva - Ao Vivo em Curitiba
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0207902378f257c325c0cc675fdc97a289bb5ffcf998a57df29b0bdb2fa4c62. 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/BRDVQ0500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2933d82cc300c99c2b92823bc79448b7938045419c99002f513a0f382dc138e2. 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/BRAPD1300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75aa6e723faee1da6b0f52374d2794f31c282022cb76a833dbb729ad3a8a2023. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRAPD1300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c055e4359b04895801b04cf1c7ba3ce7c238565167e11546b03f18e1f3ebe2. 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/QZW9L2238883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4f4c51b03f81a8d15324886a4e3c85076da9f896f7f7677e8ac978c2a6d325. 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/QZW9L2238884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61aed0c3fd915866f82d82d93b8f72827965af20573a1bacbe4b3c0ecd03fffa. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BRPVB0700165.
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