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 0x20a7219310cc04483346d09b1c97ffab4f68d8b5518879039900dfdc136837ac. 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/f53224a9-c67e-42e8-a0f0-c725ce8e61e0.json and https://artists.proofprofile.net/proofs/artist/f53224a9-c67e-42e8-a0f0-c725ce8e61e0.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 0xff0ebd3671116ff1edeba9f50e90cc8d8b0182896d30093f7947dcb4185af0c2. 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/AUMEV2491661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe5dadd025f976a8682c758d28c3193b5b82d756bf2397551a3a1229cf00f9f. 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/AUMEV2466225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c71810f19eb6632f3bbefa10e0d99099afdf637c1bc27fbf0a75d2efcfadc5a. 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/AUMEV2439138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff3ceab348155eacc32f145932e2212753dfd83a61f0bb5b9e5d8b72480e54b. 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/AUMEV2418548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486ea1a3e14a1118ed63c4c180af05811b005cbadd175c277dae0aa0b85bf37e. 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/AUMEV2402119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d91f1af768b14906c8430599379ec6ccf7ed75f29970b5cd6cf5abc0602c11. 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/AUGBT2342412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbb138a5232ec0ea2f415acc9f5597de68c43abe8b9ed39da80e987d9e0fc5f. 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/AUGBT2329197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e1e200077c6ab8d5b65d78e8c6cb28f3283665a76c6c427af7a1681597951a. 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/AUGBT2312859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa7c41736627c48c826fde0d100185d8463d2c59e51f0149d451017342f34de. 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/AUMEV2394368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d07ac959daa4de05944541736f99322e6fcf09400eb8a826d13ced6821cc5d6. 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/AUMEV2381392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e932e80281e8716de2a93c481d5278038c51f4c3c313668979b05c16958d82. 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/AUMEV2370320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde020cd9a76215f7497c75299a69f2b097ae6f48be0f1f63a4e4d281f84d0620. 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/AUMEV2349877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94ad343aa1edd7b3c84d0d1fb904f6eff3fb7fb904f23194373b95b794b3455. 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/AUMEV2332369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2a5ca41866aa654dba386931bf3d242d31e9ce33320ae2857dd785f52846bd. 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/AUMEV2329507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8159c478e6ec887ce9b7ab1ff3a0c34ae487396e1dcc927711737ea5e7c17489. 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/AUMEV2303368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40526c3adf99af2c1b4c5890054c258019d9ded365a712fc2c3dc4499e3f3e6. 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/AUGBT2232838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba11f00593836a62d7742cbe3abc5d9c112f69ccc65aaac772f96ce9a9e9642. 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/AUGBT2218416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f7fbe9cfe3105d3d1421e540fe72695927702251f801f9fdad1d7e289509b3. 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/AUGBT2209590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dec45d948c2b75ac9734bbeae8f23c411645da60631f3572a4004c8238f0eac. 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/AUMEV2287722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff44e6fa243726c989584b828b00f072de4625e7f55a15a644e27041aefe417. 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/AUMEV2276651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdeb2a8fc42f582a3cc5dda12b8c9342c54b6371a11ef6f586b1cdc0b90c7473. 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/AUMEV2261268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b496c1319d54faed620a4e33d97756a85c3f1e638acff42ab28ba54de41db3. 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/AUMEV2569876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b24c9639063a56945e13f349281b4f5ea232de78e780a36969ad0f7cd121839. 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/AUMEV2551816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe9cebc0961da6bdcd5ac1c388297a5c0cf2b15ba91ff38bf05c17a9286b6be. 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/AUMEV2537566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd12a106b48886bbae6d3722826fdda77684f0af8de36b3aef0190fb82a6a4c8. 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/AUMEV2517844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0301bafefe10aa6d1d22ffd6eb2a577a2a3ca476ec9924ce2322d76df8acd6f1. 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/AUGBT2487281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315eb177a6061c8388184232968f941c426677ccfd0fb9983a7253a7b3a57e77. 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/AUGBT2485491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12af7a66a0198a6a9b9ec4da77ae54bd4147cc34955d6f31389c390b5fd5c9bc. 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/AUGBT2471222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e5d4371137e071d245672c5458455e97ed516565da5da02cea5e6bcd7f2c29. 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/AUGBT2425474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5856404c54abc17f2c2246cb088c69ff370ff550e78829e3ee7f52dbcde923. 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/AUGBT2410069.