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 0x346692f28eb56d86ba497d1b6bd7f631630cf7440c1c37d9436fd79a01e7232c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/35f57beb-e8ed-4f11-844a-138d240caf15.json and https://artists.proofprofile.net/proofs/artist/35f57beb-e8ed-4f11-844a-138d240caf15.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 0xcbe17777a14635cec044e5e4829d576ea9cac3a52c9a0f259981431dc145d1c7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NL9KQ2390090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d18329cb125d7ccf092d5cd680ee4435937de2a4ce3abf72b232b844593b577. 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/NL9KQ2390537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad54667c3daa09c33e0b119f0ab5083324a12f0334a698a7b87863b1657fc7b9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NL9KQ2390539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5624159fa3a5cb75bbf2668572afbea451bd136003a8226fef9fb18e22c4d8c5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NL9KQ2590631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5633334e5b01524d31b9fdc27fdfc2eb80a464085bd9ee5d30ba53dbc1bb792a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NL9KQ2590677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306a8a2b22954742093b91f6d77ec491d041f035049f5ecc414d8c94adb3b04f. 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/QZZ7T2472211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e012019ae5647a818c1f8054074be1ade00e1e0d75366ba335b94b7e231f30. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NL9KQ2390617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81bb7161fded8e55e2c0885de92b19d9a872f4145459f3608b0d0200849a84d8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NL9KQ2390601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20822c57ee7636fdaa36f1ffc17ce8480dfccd0c1183f180733b9f9f0b89bf48. 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/NL9KQ2390551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ef20f9b1f8a19d0a88d82844c5668dafcdd3285dc5dba2fd720f6613ecb910. 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/NL9KQ2390545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4bbf0ca9bbdd53ef7585052daa296e5b99fd6876f500d9d2158a5f93615b58. 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/NL9KQ2390499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0103101be170e3f5dd0a59e898e943663bb255c78e20eebec114640357c950. 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/BEIW12400553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf901d4fb380d818413de488153cab7754c8a58edf0cd56bc25fea9c80d5ba61. 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/BEIW12400477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc778952e5affd9ccc471e3c4d69825032c1d3116fd211e944587e0e4208a043d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NL9KQ2390321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ca1a891a52bab02816edc892c243e66f416fae927351e1b28ded7e248f57fc. 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/NL9KQ2390343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29f29efd1f1cf15ed4fb5177ed8054761b5b5f3a36bf7c6db14a4245b8831e0. 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/NL9KQ2390296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47769896b1d980eb6c70ea44d8f8a93bfc3ee6ce1c7d6ee0e069a59f48a43538. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NL9KQ2390297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cda7d791e3031a948c535e8e2707717865c29adbdbcd79c4a3e82fb885643cb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NL9KQ2390215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92e1dc189c13fe06632f95b0230549f9c2de11a8cec3ea7f56a804075c3ac4f. 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/NL9KQ2390091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d91c5d30c2464bd78c81b5f920cf7dce54b92b4e4d969de12bc5bf7dffdb4e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NL9KQ2390089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab2eafc11852e2ea1b3ed8d166b53ba6c8ca0079f02786a9c30f5566579e45a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NL9KQ2390088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1faf44eee80dd79cc02862de440d27bfd248924b32aaee5e505585416aaa6784. 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/NL9KQ2300096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81df43c77f7e1645c98c9ba52cd1a4811400054bf363ba45164c3d4792501ec7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NL9KQ2300076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3999efa2bd166b740313b1969aca1a053951823577af69eb284c422a44feb76. 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/NL9KQ2300077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b13a4cb076cab00ecbddb64a48ae1e8e11f63738db230aae3f2ad9d8bc33488. 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/NL9KQ2390044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1bfb5f9f09cb1c553ce2349f26b71d93b45c371ccc92416d1773ce148816cf. 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/NL9KQ2300080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a5d6d4c6f21d4c69e9ad697c49dba3554848f158cf8d751e15e237e3eee9b9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NL9KQ2300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53db76b4251e53c34c2880b41a5574300a40d6d6526f83a728b7a762273410e. 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/NL9KQ2300059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78f5f76c4ef637e9860be7d6001e228d8ae7719fb899f65c1a44b790004ef40. 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/NL9KQ2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e75255acb45db7d126e3a7b60a42547c5a5fcdf18c973fcac506abae2f0580. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NL9KQ2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e52ee4e65503d74c449892b712e45e58c25f95772a7870f690631feca4c11ec. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NL5WB2300147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8a4a6cbf31e1f252d154cfd1b45f0dfaa19b8a8cf352df1be1d9d715a6da37. 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/NL5WB2300148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e34525c4e77d84e4024aee9370194d2d906bc13135a9fcf20bf2c36c69b2ad. 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/NL5WB2300092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d325e83d5fe7b4ecd7294f76432c085b7e2dab9cae34ec29a986413b1c516d. 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/NL5WB2300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9e688f0270a206a5dd2184ac010741493ca5a02afa05ca6f10aa2be263eb01. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLZ542101112.