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 0xda616f14e69333aff3a332451292e3d071b30757d9652607cac6a782bc8d8766. 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/2f43af90-b707-42f4-b49a-f3979da19461.json and https://artists.proofprofile.net/proofs/artist/2f43af90-b707-42f4-b49a-f3979da19461.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 0x3c7291ece33aa47602aef7bfea916ef659e82ed66b28dbebdaa5e4883cf4dcc4. 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/QZGLM2151492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc8070bc3b847dfdd4666a740d97c8262b27686d6cb9caacadcec41e10f29bb. 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/TCAEQ2005130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a20787ff7aa7fe25dcbe130e9b97ef5c0e9a034ebc0b437ce5a9b7643ffd28. 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/TCAEW2024389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2110e9376da3f6bb6080ddbda9c3b10ea76814c9402e2577d034139a11cd0f3d. 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/QZGLM2151493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c6b5c95764f58ed187d367ca47dbbe54b6c5165aeb1b5ff617207649709770. 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/USA2P1953134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1277fe8ecf3ab81239c3b10c9ba7044e9f5b2bc975c689fd7ca1809999c24e58. 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/QZNJX2025683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f602c79c70090d8c2a889185fd61dc4d73995e2b9581ed80696fde5b9cb70ab. 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/US7VG2117568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0cf812b8845f5e25f0302777828c7732af2ea73a8ce4fd5a885a1846cab3b5a. 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/QZGLM2151495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b74f5af8a0d7789655c3e0302ad3c6bc9cf05450734875e50710d1d4c0bdd3. 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/QMLD61404169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d2e0940a617845e529112ca2cea40687f87d0fa829e5e41bfb8ebc0c43f498. 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/QMLD61404171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8ecfbfc051cded1ddeb4040ad4bbdd81025bf256a3d8ef31b271385dd7b2ee. 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/QMLD61404172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b47037886d94b7401c6e22a2431dd8fa56fb7eb5bf904e66f34130ededc525. 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/QMLD61404173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55b2b5e7cb366907dea1ce49d3260e46ec226b878b92328c6158cabed397089. 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/QMLD61404174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d4dae6e84321c6f7a477252c9124a430e772dea6a234f07dd015a427d603a0. 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/QMLD61404175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39e5f8a690e191f0caadaed27967dfd6e17681e0ddb49a0ce1dbeb3a01d8b10. 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/QMLD61404176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0a4cbcd0767bc840b401a51822f401438621c50e39068deeb5e0418ff93998. 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/QMLD61404177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf3d5fa2988ec62e261ea790e98a0a1c2848e98192acc5d1e02f0e22152f2ee. 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/QMLD61404178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ef3ebfa165226186b74bcafd993cfd3719b5024254a8ea12ad01afefdd98b2. 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/QZGLS2381507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88348deb1991146d027b726028e867103ce7551a78f2e53a923379f312bee4a2. 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/QZW9M2274900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163a561281b6e8c8293c5a7cdb9b5a81b14676bf18281290b63980fa77e3fb81. 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/QZNJV2102348.
Jam in the Van - Prinze George (Live Session, Los Angeles, CA, 2021)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5cd1fc337a512cc137435ccb6f74dff7937d104d95b20b7cf33cd2ff8a2a3a. 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/QZHZ32117118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f602c79c70090d8c2a889185fd61dc4d73995e2b9581ed80696fde5b9cb70ab. 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/US7VG2117568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a20787ff7aa7fe25dcbe130e9b97ef5c0e9a034ebc0b437ce5a9b7643ffd28. 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/TCAEW2024389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc8070bc3b847dfdd4666a740d97c8262b27686d6cb9caacadcec41e10f29bb. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCAEQ2005130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227b7fbb878e1f656c2a07960f8a56b1b1fbe5beb57f2521b4b6c449fa37ff0c. 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/USUYG1264541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74109283eafaf7f9cc136ff36ba3c586fe60c6521210f94fbe5f3afc00945e5. 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/QZ8GX1700316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c023f9a8f2656c6fb9818b037d0fdc5b121bcd97f7dd503f9df55a8d536c2f. 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/QZ8GX1700259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f838adb7050e58ee4e30721053c7d92fdad5ece89f9aa2b2ae2d7673b62f9c4. 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/USA2P1801959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82feda7f39000374b73b9f32891fd170c516d4aa8c17edfc84a8951a5048fbbc. 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/TCACJ1553340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564b2f60f4828abd461f5c0aee215efeb96142565bd1b82a8d4bd5e4c4324cd7. 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/TCACD1519415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ff487f5ca8a59902f72db2c31cbd52d815ccf24ee092b4cc13013490a2766b. 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/TCACD1519417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a719403471abcf6a6e5e7277f23277ca2df1d4685b118a80f031549d4e2e269. 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/TCACD1519420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6020f254b338983f8554b5e9bb55b8192ef04e98927ccb4c164775105aab9b06. 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/TCACD1519421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa6c59fff90efdcf4966b6ff9ea5b18515fa27a236ab4e143a6cb15739142b1. 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/TCABZ1475868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35197873735c14f333e8e47593bc658891dafd0d3f68f4938f6bf9249a89291. 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/TCABT1454369.