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 0x897cd9cb026e994a580044c8a320acf7264c3e2a09e2c6d9ed7e708849a77c00. 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/4c25f211-6e15-4212-a40f-81bd012e2b60.json and https://artists.proofprofile.net/proofs/artist/4c25f211-6e15-4212-a40f-81bd012e2b60.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 0x6313064d58738eb690ea054a512e50e201b5ced09521f5f778d2ecc74ed35112. 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/HKG732263408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e2060aad88aee9bf1de930ebb441b856380ce265a2b533f91b53a4836b059a. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/HKG732340313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4babaeee3c7d6608b0a0eb802a4c5f7c1af270930953299cc043203606df07. 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/HKG731602616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80b00b9d575698f4bf1f5779993ae844fc299ec4758602d9a89544aab9463d5. 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/HKG732318914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151eee9e99eac4d0faf58a3e7d02a7f95811512257547d160d70be821b523dd0. 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/HKG732305981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fb0a1d4030d297fbed8984fb8c862d9ab8e0804aa2b53be5da8dde51f70b99. 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/HKG732276848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5cace492feb1137b9614650e8b17c441fb85371b241f22ec498ca35acad912. 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/HKG732246792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5eb67fcb0c2d63001ed7237133a6888382ba1f4d69f1e4e93ce35431101540a. 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/HKG732236164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7866a9787d9841cecf79c9f8d60ec2b6726111f1713a385d76bd16bbb37c7083. 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/HKG731779420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d54551eb307f51a658e2360ca0168a38f24a77dfaba993eb579755c5cc3bf4. 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/HKG732122250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a212b9dff91b649a5c8438b66c389124a3a5cb2045e8c0850232ba62acc3d82. 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/HKG732117516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ed498bd36a9400604e2ca70b67d94e9247a92b0e54d5c6eb6506b9c971e026. 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/HKG742115909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2b068cbf90364122fece6e8b847f03042d07fd4cce75d3b7a7dafd1a0d9beb. 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/HKG732130059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3916c95f214c00e8012e7b70aa423c060a89f6d7aa962a6bec007e1353ccc31. 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/HKG732028302.
只对你有感觉（青春重置计画 3 剧好听）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf29e5af3fe55bb6c94a122b407a183d58ae7dcc33e2eb79b17afe8a6e170df0. 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/CNE222000645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8527bf0a889d0bfa38df479677e3a27f170326cee5bf5fb52411bf291c75453. 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/HKG732118746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd033dc0717458f99ed8f86ae38a3d74906473f5905805b0cd78691a57bcc5282. 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/HKG732019494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89da6660e7d6a31061db21a3c056ea0ba20cb890d51123db2ec1bdc6c943230. 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/HKG732022281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12cc089073a0127fd41e4376ed16aa5e4c4d11ab13ecd89ff5966b064d0aa3ae. 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/DGA072307825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a021877fb31977bf16d01828b8d4010c18f7492ee96e55ecd9a4fdf6554fc1. 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/HKG732008995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4010dda69eb46614a06369e5e37af71cf96273e4bb67c5146ee07a3117580dba. 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/HKG732007607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e85ecffdd117a3e22b3efc42694d930f0f5a3b3aec96911e6ec683a287bf0f4. 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/HKG732493514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a0b02a3dd514a2b0cb9e4aaf0e330721a82ea2fe17f9d51be86f256e13a99c. 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/HKG732128921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a424adb933a63ac699456789beda2e74ef2d253f4bad68a28e92ea8aef0eb01. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/HKG732128652.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5044a93d96ae67fc2daa59499aac2fbc222d5ee1969144d78ed437e7e2e66afc. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/HKG732128647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb2b22a5dda2bdaee5431ec3f8a8fe1605e706552b9f32690ead5ffdc20b75f. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/HKG732136069.