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 0xa743d1c43d0de0527caab1e32066715f47a0262977f209bcbb5f84c4d0811ec5. 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/369de196-11e9-4f21-b019-f0de663428ec.json and https://artists.proofprofile.net/proofs/artist/369de196-11e9-4f21-b019-f0de663428ec.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 0xb612deb71765fabbc5de001764a2a359de70fbac30c4ec1c53b00a1f8572a14a. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:27:16Z), 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/VNA0F1711977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13cf500f668f32d2dac3945b6582e437490c2d162c0e3573d23e1bda11afa6a. 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/VNA0F1711978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75191b5222df804745b41cdece387fabe316600c88c2e49405c10db7fce30e63. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/VNA0F1712000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b861258e18d2bcb6588ee510336ecfa9242c3e18e9d88a2f49d26bef439c2d0. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:05:17Z), 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/VNA0F1712002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f628c2908b1210679e125691415421842299c483aa203e62768cbdb92afcd9. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:34:54Z), 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/VNA0F1712007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842bee9248d10efd34dbc871596a8de13d602e3856ef8b5196e9c31145f3edf1. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/VNA0F1712008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972aa0831165fcaeeb4b1a94b27419be66d467353b7192542e7c7a0697fb4e4c. 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/VNA0F1780490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6642a261ffe203aa2b0aa206895118c36562ff68b17a83fb58b266adb9288b4c. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/VNA0F1711989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a14e16f5071dbdf726536c6de3f3f593a95007129bbbe616d5b5f2caea99800. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:27:42Z), 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/VNA0F1711992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67ac8ebf37bddb8c5ca37d5c3094d80b46f1d6d85718e977a902d8f13bbdd95. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/VNA0F1711997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81adf902e75226bca4928ad36528814dcf14db0bfe8daf13d54dc5544bf522f5. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/VNA0F1713092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20aa7db7e61d1820d66807a083947d1160607843f3360e48a8869994d4ad8f50. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/VNA0F1713095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493b1b4511e36766ca6934529fe25bd99a96e333117f788516c189dc59609f34. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:04:14Z), 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/VNA0F1766902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70ccbce7422c9d783ae85cf5561850a9e86f40e8b8d362567c72c7ad5e72420. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:17:10Z), 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/VNA0F1766903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd577cf8b4b22aab0222961ef0330516186c2780c4437b8d4a595cd6e5ba1d5df. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/VNA0F1766906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c0bf631c9bbaed5eb5f8bae2343fbdce14feb854c2b0b1b4d717b876cbf4d8. 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/VNA0F1766907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3693560cf5a79518440473db0729213adf727e17424b9a01d4ddf70435a76eeb. 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/VNR011041846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702b5d36249feafe9181bb3d09a2102d4f5781255d1267af2cc41c325b6348e5. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/VNR011041849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4c9a6996668cdcbc7e710e6ef411670b6edefcfbdc4e05e2fdf8b67289a6dd. 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/VNR011041853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0cfc9ded6d90f8d03ceb7a8b4c36eac39ce64287854ee2dd281873159d4547. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:52:16Z), 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/VNR011041854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca013d674ff4f8f97a2cf8f09c345f62eac48aff7b89d00a1145c43657c77eb. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:07:48Z), 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/VNR011041856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9d7023e26a024c62202692836728409359e5bf107c5decb4f38e73262686b9. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/VNR011041857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce3e5871028b54e621bdf0bbb46cbfa20b42b2817321775c61db966326607be. 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/VNR011043120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64921d35020b192910f82826c122b9d2acab11e7a45adf3ea6fe6bbeaa115ed. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/VNR011043122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386e741fc5dcef70937bfca81f34968d854e56cab0778bb0215b420efd3c4d2b. 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/VNR011044501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04fa2d2cc44965fe0a25f974f8f61bff78f0148e2a990465ff55549753cc0d71. 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/VNR011044507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795faad6c00c51e74775483e2ee50621dd4daaa292f0895aaa3a4a2a02a2ed8e. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:36:39Z), 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/VNR011044514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb2d3dfe50607e37847e77a0b6e951953c4dfead65f8e427f4f1ea37bd6a896. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/VNR011045588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574319bb686677d76eb762c9c287eda82d249f26dc2dc274d57457af7c11e1b0. 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/VNA0F1703536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230d4aaf62c3cb5fc85955f148766a631a9504b52583c1d221929a565add10aa. 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/VNA0F1704325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25e23f57d29669de5b465ee8e75ce97e6b511616d4ca51c2814173042bde2c5. 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/VNA0F1704329.