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 0x9f035afb2cac0842522f876e8551964d5ca94ec8521fd318116198df0f5d7efe. 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/532a91de-5979-4e4a-ad51-666666791677.json and https://artists.proofprofile.net/proofs/artist/532a91de-5979-4e4a-ad51-666666791677.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 0xfc8a9e7fbe93d2218b1e50fd68967642f9bbbc1501bf975a455d9677bb9df533. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/USTCZ0972652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ad1eb6f7569230c97ba3f270624b072d19f53daaab574eb8d1ccce17a84d89. 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/USTCZ0972739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8a8da9a397922349e72eeac1707477150149916d0728e42db2d79c22e660a5. 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/USTCZ0972740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2af3c542cf38b38ca7e606050e007ed210ec23c85ddc41380dd49169a44160. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USTCZ0972742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ebd53255a14122fa49ae0a008331f16b03deb975228994285b4d6aac05b5b48. 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/USTCZ0972750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3cf9390f1a3051dcbc59b004cb1d04bcf851b2a170cf2b55f4a971aff842bc. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/USTCF1094618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c0ce6d9671d014c1e3861c9922778811787ba5c5e2ac7629c86dc1ece87bc6. 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/USTCF1094620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62bdd045ab418dddab053ce4067dbf6af5fbff3eb0feb723212666df9d3c664d. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/USTCF1094621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34626051027bd760fb083524574fa2a6e26c0cbe9b926efc07715c9f59cbd19. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/ITF250900070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b14236a4f0569740cbcb4022ac3ecf7824af4e2ccf44b0f278314115cf3c32a. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/ITF250900074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527f66c908969c2ea7c8a4b37e7a6ba8780251c556c563d257be83f7d1c947cd. 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/USTCZ0975003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf95b950e6e2ae8ff92e870fd27c0d6f99a2ec6c0526fc5252c8c197ed7502e. 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/USTCD1047311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03adfa4965fa3a036d5dd148087a62d598e6a5ce174271cc869f15856273cfa. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/USA371025757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf869a6f78618caa30c47eaa3f6ef23742e39833245433b191448303c678c5c0d. 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/USA371025747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3c596da9cfed8f351fe9c47daaa3a7269b21f492fbd610340c2e50e8803efa. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/USA371025761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad0e12ed905de3f57fd5e06af3cea2dd97b4d7c6ae28aa745f048740c035e33. 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/USA371533121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce6f5c6ef0baed29072a94e3e7627d2cbed1fd8a3d34f69cade09c9a40ce236. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/USA371025754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7457145797cc6033a5be57ce6be56ae4defef8676b0b30fffaf0a8801893343f. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/TCABF1210096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc208c323ce606f13c3977a6ea425500ae80bd06feabd4f4283832ff7ac72e8. 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/TCABF1210116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca077a3d545cb0f16a58249b46dbf64ffae0833b59cda6d0d56bf0c458d6a25. 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/QMDA71451283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef3a094802aadad54550bafd1a42862c42eec9ae9d9a7d29c637daaf272e5df. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QMDA71451285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc8afc7d8a31f168a0cc2af36e24cf7f64979a0524f78ad139f42d2ad813802. 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/QMDA71451292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe813e04321b715a684007ec17274c27f5c6a549006f0b18ee86772a9aa36ecae. 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/QMDA71451293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3411f9f3eb4a8d84e992c1816f244534e8c78d48ac91fa2354699f68a860f34. 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/QM6MZ1910395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97174cc1043641714b612555d318a7fe8fbb0bbb6b6b340e50f540fb291a5e67. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QM6N22016093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda8fdbc1b5a3a125269623b87d09851705ab1f3202d29fe5583486aac59ec11. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QM6N22016096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536c5a7162b1459b401dfb85f11eebb2136b9406a3eacf812ba90bcf667b4769. 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/QT6622500771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074ac5ef015c16db1a4fd494a0e325b197ddf21f5cbf6caaed4110ac3425e72e. 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/ITF250900053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f3bd7b6d8e1d9659a540ca15ace1b0aaf9229782420504071f6ff698356a2e. 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/ITF250900065.
Noches Latinas 3 (Salsa, Merengue, Bachata)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3419a9952ece05aecedb4b4183446b2b23166f22c81696722a022bafc8975f. 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/ES7510923120.