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 0x168dce7cdd26c42625b234f0b67634b219bf3ef19b2a3a800d5730bf7aa62487. 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/c04728b6-827e-4ef0-a6ac-4db3759b8ae4.json and https://artists.proofprofile.net/proofs/artist/c04728b6-827e-4ef0-a6ac-4db3759b8ae4.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 0x4cfaf4ee0d0fcfedb334f9d1296edbe5bdf34725260858326352e4b20a051459. 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/ITP842300156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aacbdd74c22c197a75f7f299cf437b08a7079fb890e69b8ca362eccf5e208b8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ITP842300216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61417c1a0e16bf2cb32e8ebf89e45b42107a4bf580459e1d6ba4e4e8ac98e48. 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/ITP842300122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3f748ce35531287d1f7c4344be4e8c5d314671a3c3fb0d410b7c4f7c89bf52. 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/ITP842300218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6363ee3ad2f9a239a72a212704be309accc04d0fc19415460a91468bcf57bd9b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITP842300157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97964561a6eba60ee8ba1f1e23d1fd88d4fa791a905095ba4ea2858ab4447252. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ITP842300121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd8b189b4c620d702799a9b31043844a823eef79072755ba5e5e835925cdb6f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ITP842300217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81be4d3c12fcfb088dbb626befa06988eb5a56b13242e4782c9253a4ecb2772. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITP841800066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae454162c75d7c3caaf71c17d01a08b2dbdd69f8a8073d7d91059dc939e2e9f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ITP841800072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3476cefadb6c1519dca2c32d54c6efc7e2a7850dcf9d1d382b276e53e457e9d. 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/ITP841800069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03373e97348458289cb6a20acc1b65ac2050de583da0efaa92e891ae44e76b9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITP841800070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1ef8e027931277f5940d988c8a7e63187ccefeb33f823c5531dd8a331d4cd9. 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/ITP841800073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e392a9dd5f5db2ee881495044f77444660b0459376623ebfeb50c717aa3cbbf. 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/ITP841800074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6655f52149192c697b5399cb6dc06a0ad34cf7d54e144f73e95c2bde5816dd84. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITP841800075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb538cb12956f9d52ee76fbc30c8462aace94de8224745431ea2d0654d3cab113. 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/IT3GN1300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466dfc6409511ae6d0180cf12b4b9f951b7af21f8e7d6115679c46150e412d65. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/IT3GN1300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fba0cc517459916be5f9ebfbd05a2dd3160db26523608e8761a8931d17aff37. 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/IT3GN1300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5c256d4929a84ee24a1dddbb4c12e4c0312cf9e8081eb623d4e2b5425d3f9b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/IT3GN1300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778d49af996233af006abfe9ee2a162b482f010a953d5b1219730f8557da3edf. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITG711110030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5afc6f574a135c042cd0aae3ebf3e400bf4bb62d4fa799ff87d89dafe0afdb6. 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/ITG711110032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6084298138d1080e8cda4f64faf29b3ab87a20a1cdac36eff9e4a75c889cb3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ITG711110033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe805f2dce117556407a6b30b68f5f888e3513088359ba58741db9bb3cf260642. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITG711110034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c377719de51e6dc17ead80a35c8d95dfbed9454689dd4018cf849c799305d84. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITG711110035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05f3e6d26c72febd3dce304d31e5f552e1fdab094251680c3cd90fdc7c3b567. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITG711110036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29aa7c5466789d310f40ab8a6d6543d1c643281d87f03e48c27b97999e3bfc22. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITG711110001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599a31fc94c89b0fee4ea10396786fcf6e37629d55f283fdc3048e5d5099db28. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITG711110003.
Hommage a Violette Nozieres - Live Cover Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea02fdff5304b385d7c660d7930c9ca0a6ee6392f423e24da7644a237c11fa7. 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/ITG711110005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94634401ba76f13a9086a0e7a2e0f2a5c5a684d1abf7715cc68b25941380c552. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITG710810001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3a31d27b60b83458fa7f32d9af2fc255221259b472739c2a91c5409b2be95e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:44:55Z), 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/ITG710810002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79daf4140d92bd2cc83f55e8b0ea310ed39d160b37b828645f7fd35697c17881. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITG710810003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05f98f515207cfb9608603833783e245a8a3e2e7ff810627027afed5b4a8cc9. 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/ITG710810006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94470551c5ff2df4376fb0e3c208a5d4b8a47af2882b42d2ee7c5d9cff10c39c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:15:12Z), 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/ITG710810009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb715b8c0cfa995b84bf1d90217d16ee98c1041b4cbb8ff889fbcd680288f664. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ITG710810011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fddcc53b2ed1c88f89913cd400bd0a2837cd265dda680f452a284f2e800ffe. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITG710810012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aacbdd74c22c197a75f7f299cf437b08a7079fb890e69b8ca362eccf5e208b8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITP842300216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cfaf4ee0d0fcfedb334f9d1296edbe5bdf34725260858326352e4b20a051459. 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/ITP842300156.