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 0x869f24a072b6d9da53ba2e30bf149ba6c88fe5005329a66b13f8d800c011d799. 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/e897b328-590c-4062-bb7a-9654a3596527.json and https://artists.proofprofile.net/proofs/artist/e897b328-590c-4062-bb7a-9654a3596527.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 0x5385178176a501f3cbb53fe16fca36f2bbac1bfa5f4ea6ab5717957384c1f4dd. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/MX3741400732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbaf07b3a3c28e3f61c42e28fb9fba6a75f4dade58a34d3654feb3862f8547c. 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/MX3741400738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035ae96a60ce05d2756df1552bff61655036c5d27bcf1ec4bc90c535ebaabb54. 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/MX3741400739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf839cb60291145813e04b1c4b618a15b7171f0de65a464b034936b59e1a3028f. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/MX3741400740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d90242a07876de9296273c0f255b938185be16499b9eebd253e90fe871f98c. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/MX3741400741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d22d2cef4d3b773a385ed32b63fbc51ddd9ad5257390f682e7263253190b0d. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/MX3741400756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c219df6380c3b4266ace93b3caa9b8b929890c70c668b75f9bd90d2b0991b25. 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/MX3741400757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8d3644d50f32b44bc431393784a3c351df48797c742ade2ed25cfd75760aeb. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/MX3741400759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd85b2048768f1ea11d5c92720258b715c275a5eaf70c638638bde6b6277295. 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/MX3741400762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8830e77aff5effa1d588f587a036f8b6cd346c763f9ab076d1ea93c26cd52d0. 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/MX3741400763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335b99aa0d59513a2efe75eda8ad58cec7c0e67f13608bd2cc5cf8c7e6f5d324. 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/MX3741400764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d474dc1f91c9c15eaffff80398615ceab42b6508386e72abf3cd6e2758123d7. 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/MX3741400765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe465a6f7396b8c7aea64ecfcfce6da5b974683409a5bcea5cafed01a53648afe. 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/MX3741500743.
Nana Pancha en Vivo Desde el Multiforo Alicia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35139ab5694ab4bedf1b4db2723e305b2ad58855c1d9b79fc36949503934fccf. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZ5AB1612904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1428f0941f6ae472c4ab11f24ea96842956bd167ef1fdea03b97383e603241. 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/QZ5AB1612906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98acf4c64f993e2f4bcc1965368850d7f2e2cba93223e0ed41bf04bfad72498d. 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/QZ5AB1612907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d9a24b92fdae03683654e445eebbc1778bf37a79ee779523f0027e8ee52399. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZ5AB1612908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084afe2bba172a5733deddedf296747c076738b3151b8095dadcc83863af1485. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZ5AB1612909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8770ec479080a7add9c67a775ac737ee686908cc871ed155bd03f00b4ce1f360. 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/QZ5AB1612910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e0c82aa33c8f170f18a5a0e2bb0779ed6e065fe2ed179f916b0de4877c36eb. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZ5AB1612911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82bf26b1d4d44ad4819d060b7499d61d94549a6235b7ef6dcea334fc3574019f. 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/QZ5AB1612913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993fe2f466d0a6b76f63f63f0a9038de0e521dc40b9d4285d41de576b9b92442. 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/QZ5AB1612914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda0a8d0da7f89ed9ac1130ef7a7048007d66c8452282f71722ce01c6fafc470. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZ5AB1612915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeddeff6b87eebf1dcdfa1c5748ec2380148b2974759a3ff6623de20b2209f66. 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/QZ5AB1612917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f46d5fdcb368bd5b15fd42b8fe1dad7264dade3457483cf34fbfc00c30820c. 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/QZ5AB1612918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a00e37bf627805fe3e0b064667b37fa1a650b112f1a34bec285accaef3e3b18. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/QZ5AB1612919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536c57a13a4d19103d6fb39944394e537f859fef1a0903712558f957a64d7b95. 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/QZ5AB1612920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb32e1cd2b2eb17b6d017be60f82aa94ded3fb692819cafe877e64fe22a9bb9. 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/QZ5AB1612921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2056fb50780d38828a905e66cf8a54c2b2e1f2b2364e2dedd894112318a598c. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QZHZ31962472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020c1ca21eead5553f749f7ae7bc38a5f07c823e8b7891a16ebf27e552a2ce44. 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/MXD781902002.
Cumbia y Ska Party: Mexico Libre, Tres Patines, Vatos Rudos, La Negra Caderona, Cumbia Sabrosa, Cumbia del Sol, La Cumbia Campanera
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd588c59f31b69e2eb37277e19fd4ab7632a6655cae3ad90cdb983910a8d3e49. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QMFMF1399794.
Mexico Libre! - Ska and Surf Rock from Mexico for Cinco De Mayo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd588c59f31b69e2eb37277e19fd4ab7632a6655cae3ad90cdb983910a8d3e49. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QMFMF1399794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055e519ddba07e9617a1a8d3abc42833a25ac8c64ee92fee19f01d902b579254. 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/TCACS1644259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f0a46e7a916696828f0f835863f8a07f2a376a724cb3baf9888a738c15e9cb. 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/FR6V82591665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514f41c550f6fa7622001ef5c41e6ef34fae9ea60190c009261dd09fb7269125. 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/FR6V82591484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88bc4a67b592963e51c416483cbbe3bbae3af67586b97a4b17615d258adbda55. 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/SEYOK1764817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288cd3a681556feb14f48c377fd60dab2e5267bb8d1865bf0457fe149ea49279. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/TCACH1502126.
Roots and Basses: A Latin Ska Compilation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f0744880e8c1ca9873d9027a0799a16c2b49c2a5614f38846468799419e019. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USMH92384520.
Desde el Teatro Metropólitan los Korucos (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefec479a9702c36039554a6787fca259c9a028198bdc6a50bb98ad60c408770c. 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/MXF601900338.