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 0xff33af3d3d69e45d0f591a8656fd1e9939ebeca19950cc477ae471b266a4bbcf. 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/d3cc1246-4451-4762-a81c-1edbf25570eb.json and https://artists.proofprofile.net/proofs/artist/d3cc1246-4451-4762-a81c-1edbf25570eb.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 0x61a1771142be83e36a75984fa6689beb73b932486f5f818633d85112977fa2ba. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZGLM1958626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe960bd8f907c992d961f3876268f8c666884d64390f4440412c6dc7707362f78. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/QZGLM1958627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744e1b40dbabe57ae44cb79c5d5b17d72b71678800c5b5bff9b15769511683b7. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZGLM1958629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4055c9f33b72f100aeef52db6ecd66522b655c9fd428d0b056a478120f104c55. 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/QZGLM1958630.
Popurri Cumbianbero 2: Lamento de Amor / Hasta el Cielo / No Voy a Llorar / Corazón Adolorido / Cómo Te Voy A Olvidar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1cb684ef96b8ebbcc9fe108840308f93b1599a01092fd058da334b98308bdfb. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZHZ31922578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8adeb905cb61bdf6153b41fed5feb4e1edab28d1e4b89cfdab4bc377a47fba8c. 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/MXF550902848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292ba783b0e22a1a8bc770c3bf2cd9cdefcae03e03872968c5ba44512bced7b2. 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/MXF550902850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e316ca082638b39c055f720f61e86ce779f3d4d4ffe5ef32d90688a09028d88. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/MXF550902856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81159bdd22080fb884e100bb42b5131316eaaa292eecbb4e9057848ada00e4f6. Chain 2 (Bitcoin): anchored in block 957544 (2026-07-11T09:08:48Z), 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/MXF550902858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32486769d556810e34bb2e00d21cfb9e945247b2ee4a97d8433b8b28da864d3b. 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/MXF550902859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e66a08e197df5bf10e9347fe30518d1ea67a47b287f155e4e112285f1a3a77c. 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/MXF550902876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1daa56163273d11498f55b250b28567a77cfda0a18017bf47588f23cf8efe7bc. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/MXF550902878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3889b7e1918817b8141d2c4bbf6d0c561b54bd79acdb17e74198d60da2e72c5f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/MXF550902879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752bb781b67925e33dd7a0d3cef1bca1333faaf90b55e41ccd9e742fb3b77e14. 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/MXF550902881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456250bceb6ba9ad06751720ac960d516115bbc6cc9dd75bb7e80e8d9ef2a6eb. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/MXF550902888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3ceebcb20c71fcfebee86462410f9b762c1d7835d1eda80b5d7741ecff1dcb. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/MXF551505207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f67b01404b24cf8092382acb21f9f2b6f6ba2f2a9c85a6a33c78b3fc8bbea1. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/MXF551505210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020f3de2ee91792aebd89e925a4d2a9d20da0d7749affeba572cd52154071c17. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/QZHZ31925618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4079e5b3805f81a06b285d49464ddeb81e73c7b8f360fd4fc1eee988286f3b1b. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/QZHZ31925626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bde747799a130d76c57398cf5e2a2b5635b15fa2549cbdb700ef83735085bd. 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/QZHZ31929536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe480c7b37e0fa65ae7a392ea5e51d8e7d8442c8e66d6c63588fea829c100af6d. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/QZHZ31929538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f37d120729099e17c38586079fe9e3d9ba67596b6a042bcdecc2d496fd585a. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/QZHZ31929540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4231ab4377803f06c49b13238ab34428fa9eae99b29c6b3bbffe13205baa6f55. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QZHZ62067124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ea8d57f8b86d23d08e77a7707f7ad8c9a8d6826a41b0dbcc32466f8bb22a82. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/QZHZ62070654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4231ab4377803f06c49b13238ab34428fa9eae99b29c6b3bbffe13205baa6f55. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZHZ62067124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c9e150e4a988feffa45fc0bf902a5d2adcef9b7d55193f7fc9d3079438921e. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QZHZ62067155.
Se Parece Más a Ti (2° De Si No La Tengo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2747aa9fb256ba1e79c237570cce3f51014ea5ebb70571a949ef50dade8ef9be. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHZ62067162.
Eva Maria / la Chica Fresa / Ramito de Violetas - 2023 Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb254dea6d5d9d8598f883bb3800c672f609687a916e7a07dfaf32f8d68e263d. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/QZGLM2319873.
Mi Razon de Ser / Hay Amor / el Colesterol / Diario de un Borracho - 2023 Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348c9f719213b5ec7a2a5e48b61bedb73aa87c794c5aaa73e75d2757dc160e0b. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/QZGLM2319874.
El Gran Varon / la Gota Fria / la Pelusa - 2023 Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcca7c446396c0b7f64ae42fd597e071c717977b1e761ad0276b092e20e7fde5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZGLM2319875.
Canto Negro / la Trampa / Serrana Mia / Ven y Ven - 2023 Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7242d4109e9a847e84c1f8f4ba033059a85a81b71c84043548ed65a0c01ea9e5. 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/QZGLM2319876.
15 de Septiembre 2022 - Llevame Contigo / Cumbia Pa Gozar / Si No la Tengo / Canto Negro / Gotas de Lluvia / Morena (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe0e876cb096c058fabcbcdcf54cc66c5b9c13c9d851cb1aec9530c99c0bd9f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZDQH2389885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5fd56b1695861e65035ec21c6e46de8fdad291d25d74513258c23d25e325d0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/PYC842420562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7834574aa72cbb7afcffba819272b1c174bf8b3d831327a10217a89726f374b5. 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/PYC842420567.