1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xb957685107a8dbb8e89bacb9e366c3f3419993fdf0b6991d9fd84c69961b392c. 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/8499547f-cc11-4222-bb03-1f329a820d41.json and https://artists.proofprofile.net/proofs/artist/8499547f-cc11-4222-bb03-1f329a820d41.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 → block OTSBitcoinBlock must exist at that height 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 0x7d60c1874f8d728879ab1c03371d43257a1b12efbe08b250f941f5487a860658. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/PLE781300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f6e1a9a8e0f36fefc28802df36a5a33ca7264b199fc956db109fb8b60aba55. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:55:54Z), 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/PLE781300089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2cd15eaa6cdad63301fec0852ff2c6440fc84c0e79f4d37f90fa069292c7bb3. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/PLE781300091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe404517da3f9914fc593603586db053d2ac0b3ba935a40b7b409a4511a4ff079. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:32:35Z), 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/PLE781300094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5206da2ff3bfaa21702763eb45d0952192938c1e77af5239d3831883106f7947. 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/PLE781300095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958fa1c1727a5bf511ca52a45b8db3d8efeb265402cb24b5d02f450e7679779a. 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/PLJ931400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe599a1ad86d6ff8755b34ed0eb453e1d496d97612e968db0caa300db7487ff17. 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/PLT522100073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b526840525b5a9f6242fb5a636d3adeaa252a47bf96fd26f250b54bdef48a6e. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/PLT522100084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29390070e4f8e949027f90b0050362b0a60e656ecf907efaa3fd6b13985a048e. 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/PLB841600105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7866409456a93260f4b59e886bd3f336efde4986fab06ecb7f22c7628ecf7dac. 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/PLB841600109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a9e6cd9a2d980d200f9bf81393a7813c5075795fcc7b1d370eed23a6c425ef. 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/PLE782000115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4885c6a2c1419cf9f21b81435f3bac35b06e363c715d535dc893fe79f7926e7e. 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/PLE782000116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c140a8b2351d78b3d05dac411f80464f499ea969cece31b954645893b0391ab. 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/PLE782000111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83f617e76b8c71ac9e44d58d328f1961f68d2cb70f0c1e3147ed1bda72f16b8. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/PLE782000118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f512fe88e7410cf1a2d6e0228f468117963f9a5df96f0b273c48f61b8afcc8. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/PLE782000113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb182c3345960c5f51ef8a17c02f7fe512fb469b4bd658babeea6ac5c83c063b9. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZWDD2268390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0a4c971e399ff12c2f47e1dbae494ab74af1eb930e4f081ef91254bb66ec02. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZWDD2268391.
Z Hali Lipowskiej do Puszczy Biebrzańskiej
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc97c2e73dbc42c97e72ae76bbd1e0840e3f884d836678b189ca0ce3d9053064. 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/PL06V2299923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924eddadde90b67470870fdbbda24b1868ed4e0b9330516eb60422d6f0e86cd1. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZWDD2268396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6287db9ad6fe7f93655958c6abbe76335d03b35d336cffe4764f8b8b432589bb. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZWDD2268397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc428714669ab7da7b4c2cda5ea18c1661fab91ba23689834de281e40613f9736. 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/QZWDD2268399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b291d2045668b7dd354705170757d5fb27f23b8863db1a211b05346f91bbce. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZWDD2268400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7c1bdd30912b19c0538221c30cccd6d6c712655c63f32914d7c3c8b47522a7. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/QZWDD2268403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d059fff0a6dd8fd7eaf868539034205bd706f53cc87110f0f80861af964590. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:39:40Z), 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/QZWDD2268405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04951a3780e7b6cf968ab3cccfe54c4c8b7baaeba5fb029e04d6bfcf0f9c2ce1. 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/QZWDD2268408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ad3b597fbbf61cc1ed8ed8d031480a1a6790ff3e175f3585fea4e07c004c86. 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/QZWDD2268409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ad3b597fbbf61cc1ed8ed8d031480a1a6790ff3e175f3585fea4e07c004c86. 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/QZWDD2268409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa576bd7ef55ab220ca99eda9da1f5b518baa5fc45f0733e297764a9b863d7174. 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/USLZJ2339215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa576bd7ef55ab220ca99eda9da1f5b518baa5fc45f0733e297764a9b863d7174. 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/USLZJ2339215.
Bar 25 Music Presents: Sounds of Sirin Vol.6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08e4c9973c0625817a5863e23f9a2c74476e395b2431541f285164e7e9f21f5. 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/GBKQU2081893.