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 0xfb6eb7ca485cc325869baca126546e77caaad32b6921a9858bb0809d45d0389b. 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/d3ad63a6-5b13-4255-90fa-5b52d6bae1cd.json and https://artists.proofprofile.net/proofs/artist/d3ad63a6-5b13-4255-90fa-5b52d6bae1cd.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 0x749ab7727031eced99116c1fc34361df44dc12e8ea4fcaf551442f2bca1e1f54. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QMGR32068085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24d3c021d99c70d00b6d65b72e0b4d3392ee1f1bd4e48dd25d77a34e2790150. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QMGR32005675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f270fa4e207c16c563ddff19bb001276e8289c8930c1a335d51da510b2bb4c0. 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/USCGJ2185281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d69197ba7e07e983de6b30c37f0c0a7bcc110ff518c7b8feff905fc5350e50a. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/USHM82105370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c94a1ee250c461b9edca0230e45870a83c89f062dc6956802d565c5e2975824. 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/USL4Q2196948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d587f312253d939cc9280efd77b5d5038b9fcb36e22bda617317cc07616e1f. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:02:41Z), 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/USL4Q2196951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcafa41d84fdc08d64f2362277e82a39ad64952dec93669640bb3f24221f88d71. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/USL4Q2196952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22993f8557eef36e3592d84508922b292d1fea6366e4eabecef20ded7af1e1a. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/USL4Q2196954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3c16439a992dd138664bc44fd65fcb31e7372726a178d80283c41b73807bb7. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:10:43Z), 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/USL4Q2196955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d4c202785ec3136adbdd274f56564235c1d34b59fae02feb88a1360c79b6a6. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:37:12Z), 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/USHM82262047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621caea7ee68b3b232ef8053a9326ba1211f85303291f8fcff2cfb929621a8cd. 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/USL4Q2240104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad16fb6629f1de5e59e23a30b0762a098bc9243c720298ee0c445f6f373f13a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTLA2302826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b19200b6e2dfaa9d8ce82d1fd2a42aedc81bafd3473d482d239ffbe156bb605. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZTL92321326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628c27f0aba9bc00d75c0c51101203df99a5262b1b6f595fd1af60211351adef. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:18:40Z), 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/QZTLA2491063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f20f2de49dbc1cd548bae77ca28899b0edbf0f50ed62327f082ca861a789480. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTLA2466275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb3c5df0bcf54d9ebe33b154152b2ac6887bf215c040622edfe1d4c1b736fa5. 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/QZQAY2413174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56bd8366ea6cf65ece41e3b2ba7d3aeb0d28bf3aeb5b56c49230795253a8c4fd. 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/QZQAY2471293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744b9bb89c9587beb93c9b6d7a93666d0b477b78bf75e1fc9a197e12ba0c7b2e. 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/QZQAY2437523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c0c4ba204bae4ef5aad2cf86fc174a1aec2d81d6e30c5089fbf885da70e798. 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/QZQAY2422585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16ff25b07a06fcc87632c8b9bab480b5a42a1876fa9a6b2b652813b9ec180d7. 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/QZQAY2479024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec443a0f209bbae3d679297ca65b3618c33241188bab99cbbe5493ab8bd62b05. 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/QZQAY2446199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149022352b461a41aa1116d39667c07b7531fecaf1c4f4860787e790c82c19d0. 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/QZQAY2436580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f20f2de49dbc1cd548bae77ca28899b0edbf0f50ed62327f082ca861a789480. 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/QZTLA2466275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb5608894a17e709b5c800bed0a2af45e5c4bb97a47f4dda9ef0fdc7798aa8e. 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/QZQAY2419771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa297e99ac9616e854fc4796ce79bd746d75ada09e191296e9e3fa834c7f098d9. 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/QZQAY2449090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b031a0fdddc31c3b0a91813c646bb913749d1848b3c93a16e1b072fc6c1a8e7. 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/QZSYP2439358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c4e888c694b8dea62286105ea7929afbe1990b3a930f92916118555f0c68eb. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZTLA2583615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0530cde084aa28747b7b5355438d9de1422e5570a7178d68788e52d689c8037. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZQAY2512724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c4e888c694b8dea62286105ea7929afbe1990b3a930f92916118555f0c68eb. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZTLA2583615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345f96057a405a7af4f74940690f8abac11b742ea92b9da99bbb931bc966e718. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZS7J2515328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b031a0fdddc31c3b0a91813c646bb913749d1848b3c93a16e1b072fc6c1a8e7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZSYP2439358.
Me Corre feat. Pauneto, Vianca the Grace, Borrero
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32156f7c358afced725886667e5e908cf9c335ad64d9a435b284e28645e7c2d. 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/QZ2J21505285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0beca8f0bd2abc97c41c8058dc4cbfe54f8c3b7db941537bc8eab91b2463f1b6. 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/QM4TX2458757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26100637f68ec0d727d92165bdbe97217664c08962049aa4af3e3c72656e6177. 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/QZ2J21505703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72fe11c501ba758a87e27048812a46c4724175c7fd1b0f661d19cac76ef39d60. 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/QZS7J2234605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e913c3a66856deac19648960c94df46fe1c7cbe1466693e4ef4708f45d57cb2. 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/QZMBZ2200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043e9728210c7aa1d67116b4ded5f9dae84580e4af864aface7f481abe260b34. 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/QM4TW2112991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98237f5f7932e73947bd1ad5fe3e2f594864c61db6d6e17c5041027186f0435a. 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/TCAFM2162373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda66bc29ed183c6d515aae0e13bd23ac48d08be9312bac535152b597a7a0fcdf. 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/QZS7J2340131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086e714c54a246a965e6a7a276030d8eb6c703282515a8cd2c4881eac3d88e66. 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/QZS7J2393050.