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 0xe3c868f32ff81be93da222a321d481296645298f9be263a86f3b8f0952d93f59. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b8ce58ce-72a0-4f11-8640-25d1c004499e.json and https://artists.proofprofile.net/proofs/artist/b8ce58ce-72a0-4f11-8640-25d1c004499e.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 0x2b713a89bd35992b46de08309106dd040f985e1716161a98160fe1563cfce01a. 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/TCAES2015497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750c9008e076bae72e529cfc0d50f279a4cc24c0685330e85c039061696ea8aa. 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/TCAES2015499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2caa596740e16d2bf774013edece10dc41ab028db07d6dda3f7d04cb9c858614. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:08:24Z), 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/QZTPX2481523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77be9691b26fd9bb00839129e322da34487495e185f25fe852d34e385592e9f7. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:03:36Z), 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/QZTPX2481524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48360560f6d01df7c992b5d7bf4c478b13074d828dce8eaa70b16f3bcf744fad. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/QZTPX2481528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8f6fdeb005ca3968cc9fb91597e8378078e40c58810fc3c91a451e65ac3de7. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZTPX2481529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2736868a6413238890cd718c160c2b12a6a00f1f34e1f90b13c0c3794fdd4a70. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:17:04Z), 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/QZHZ62169230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22dc731f882d9de53db203d520d18c6f8411dfbdcd1a30e7eb4bea7e82608b93. 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/QZHZ62169228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d37aca86e0b54ce3243b10713947e6813183685a5716eac78410a2b1f5edb5a. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZHZ62151454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd381a09887d4c9cf217a054614d72314c40ddecc8af562f5b57a43da64783b. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZHZ62151455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7b3ea35b982e780ec9811afa1b0666755bf35f67ce82f384e6eb4215758368. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/QZHZ62151458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462671af45bbd831daa6a679b346b21f50fe68816c5d4ab0988fb6af1ef208d0. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHZ62151460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee6f35e997292ae547d719f951cc3ea2c22f4b85122ad78c5ca29b068eacb1d. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:48:05Z), 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/QZMZ92135331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5bc6ce7543628f9ffc9a90ab87696651a418f398749a3f9a647603e9e5b8a3. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZMZ92135529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735e23c7010131d768c3fc99f134d896622114bf39207fa118e2c60340f6b038. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:26:14Z), 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/QZMZ92138726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6e5483c94b8a730e0ca5f8da879bf5b12535e04354087f4ea6ddaf025d626d. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:26:03Z), 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/QZMZ92138730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b3f35b8d54b488dafd0e0e78143ee2ed48ad6980950e12550297ae3085430d. 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/QZHZ32256982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ff836dd68f931e9540a49d2ffb4256202ab64266ee655630c5f15027503abb. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZHZ32256984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7f14f4f52ece55e5efae77c12f1268b424b62b2b3e149ed8e4e054ec72c534. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZHZ32256989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e9863530eddd15e2ab413753b86ad3e28c201538a2c7c579d4cda27cd24ecb. 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/QZHZ62296956.
Popurrí a Chico Che: Yo No Bailo Con Juana/Donde Te Agarró el Temblor/Maquino Landera/María Cristina
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea65b1b507e2028b0bb31de38dc553fe7bb67a8491d03a333b64271ad21afd28. 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/QZHZ62296962.
Popurrí de Charangas: Charanga Costeña/La Gorra/La Maestranza/ San Martín
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ff4316b86fbb8cd04f56aeb7da4d6dbe3a5026f3649e6daefd2ef734f0cbeb. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QZHZ62296963.
Popurrí Colombiano: Agüita de Caña/ Cumbia Sampuesana/ Cumbia Cienaguera/ La Burra Tuerta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d9491b1614b1d2cf03ce5efe996ad323bbe466409eecf3d82c9241ac7302dd. 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/QZHZ62296964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775a2003927705774061c1393ea0cfda47a33d09f896b0ec20744db247981ceb. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZW9N2263986.
Popurrí: Cero 39/ Tiburón a la Vista/ El Pasito del Canguro - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6340e0e8b7f446cbc57957c6f992c90ef680986edda4f016967210986fe4b1. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZW9N2263987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f01673f06636d1f01b2bc8ffd9b1cb58e48fad5cb11690cee00981b5a1ce2fe. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QM6P42345179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817b32d3facdf0948482ff2f709981a50432d4b2699493cd9b2cac8a5c0ac633. 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/QZNJW2494286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92be95954b99b59687ddb29ff0a3a3417511e00963a9f0362668d95a64b00dac. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZNJW2494287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f30b13c9f1cc427fbfa37689229bac6a9bb7ed3aea6af02cb05dc9dd45c480. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZTPX2438022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2fc44155f85ea0a341ba221f6d7c4c7a6477e1509a77bb7f8d5f689726be8f. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZTPX2438025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925b57f1460ed740993b336b9244f80a73cbc2ed098998f65d1104fa07cb90f5. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/QZW9K2447262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599863aef1ecfd008475727936a51c43601bc285c5c530a9ddfed9c47130accd. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/US7VG2568463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4375a57af683a1e1db175906a0f0207fc273889c77fb3c51ac8c5ccaa4a3230. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:55:27Z), 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/US7VG2568467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b27497e31c32693d5c379896272e66bf9b358a5a345ed0046beba44f9df1e4. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZGLM2506665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b59566ea2eb2f54afac1b7a521f242ad3dcaa8aa16baa9c96521ce15460219. 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/QZNJZ2589748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58590a1f7c76485e6b5283adabfb93576d886557348957862c6a4ff2bece5806. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZNJZ2589749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2382c8a3cb470dadaf4b2a1860e21350136105368366ba4da9eaca82edaaff. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZNJZ2589751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a610bc8f96205c8a296b0eb5ebef3ce5598510c8d3832e03c1ccc70a84837e1. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZNJZ2589752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295a02773ef953bf2419d70f8748454bfa05955f9bdb5697fc7506a90669e0ab. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:59:56Z), 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/QZTVM2568256.