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 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 0xf5d1995a5caa4ef3dea30ce510821995e349a86ab2992fe08e678971cf5bbba3. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2df06314-aeaf-4a1e-8c41-040ad96b49bd.json and https://artists.proofprofile.net/proofs/artist/2df06314-aeaf-4a1e-8c41-040ad96b49bd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Super Over (It's Really Really Really Over Edition)
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 0x27cc3c7596e4b12b22570b151e62c83a856b84181f56fd63ee95159607d4ae37. 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/QZQAY2334109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253ca37729f01145daa3af80f65a315be6aa189eaf25f844b886f85522ec4b8c. 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/QZS7J2368759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0780ccf12be3cb56d6cc33fa3740c58897a707e7ebc136f3a1fce36a2660c2. 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/QZS7J2368040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669d81ca834181def15886f049b03c625d0b82e1a93f704a76c208998a0d074b. 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/QZS7J2372864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3a400b1ed4868dc2b1b062ef000c3bae04e3fb4e3d000f47336d031e6f98f0. 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/QZS7J2349698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116ddf49a8e61cd0172e6aa45d9164029eca84aae0bbfde5a791bff19da44f32. 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/QZS7J2345614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c74b3b916da8239847db23359f3b312aa7570b1b2e71f88363bee4a09fa3154. 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/QZS7J2330781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f3926d97b13465165b6add9fc7aa0998c6cc42bbcfde3eaceb862fa49cc09b. 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/QZS7J2372681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedbb16cd2c2254c54670e1d7baf979ffc0b7e38a3c45520fa7ca6b9ddb449ca. 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/QZS7J2388255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb052a7a644e4bd0de706fda22654e9d72747c134e02046e2c0d297f6b4cc6fc7. 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/QZS7J2317241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134421cfbd76d67ce919a02482f48c93e419b118910a49f0438206f6bc02554d. 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/QZS7J2366083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf59b39fdb1ed8c6d74be38dc90e86b6274cf9cc1b99fb1fe8cbef1f57b2a14. 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/QZS7J2311025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69229e8e0f4aad714e920db1675c0f5c9cfe047b0e3361a831d3eac568a9cb1a. 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/QZS7J2384932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62a048c7a98a63d6339c9e33371bd420ee0c424386e0304946637430903fd22. 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/QZQAY2353826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16e6beabae40f7c0f1a905bada93b7060c0ebf76dfb1005797707568e0e00fd. 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/QZQAY2496043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6090a2e385901977c5cb88dbc06ab5584bd7bdc045b5445f26e3c4475f51e31. 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/QZQAY2419782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c219b9770d2d0fd349e2a727fa91751fa06182c3613f6feb7a2df922ed81165. 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/QZQAY2440405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225c2deb54466eff96d02311535e44436bd550df44a3c73721fc1b32b18e6018. 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/QZQAY2429444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d9e412a5d337d80272934c794bc613a774e1fe69ccb3074487f347b42a5f3e. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZHN92431490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4b607d08ff0b7d738bd77f7b8c07d8e998de683ef5f98595d51ccadd6ceb28. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QZHN42459402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11057745aadc2382fd0d2f117e8575b9da5058f86f6bdf749f00a25373161532. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZTB72210453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb300fd776f70d8c0c602dc0aee6e4b07e431033557d8bca1b8ab15f2db9e88. 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/QZ5AB2111727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981c9f2dfc2a8d23f3bc8d1800ebbd18c524839de24110546940ad976e28c20e. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZK6K2442983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1233058ddf64666ae032a26dfe93c3b046057c9de642703192ffb95d2275e604. 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/QZDA62475753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554fca4e221eb6e702c036c969ebc5369107daa8d7d7396db766cf83caeea054. 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/QZFZ62421197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a161dc86ee4f22f19adf090e6b9ef6d12ee7159718b88a394538441bb6a4407. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QZTB22353593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b219047fc62e925914b4426f282fbf90583a50be1df13acebb0df0176379e3. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/NLRD52134033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa712411bce03f8780bfbbcc30efd5c81eca41dc372d70f1f460582ae7a82e89. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/NLRD52134026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd45136868d6d48a676aa67d797ba5aedfe6de1f038bc6ebdc72f303bbd3d01d. 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/QZNWU2310910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695c6e6b1394481f2351739f6b982f32fa05e2dfeb9b1a32a3983067f342fe95. 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/QZK6N2305722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d2dd8682f98a9e2a3bb77b8ce14e515a2b20ff4b01ac930de93b7db8f8a790. 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/QZHN72291862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb300fd776f70d8c0c602dc0aee6e4b07e431033557d8bca1b8ab15f2db9e88. 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/QZ5AB2111727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e198126f9c5df09b38483eb92bb6353e016c170c5cd3529d0a45da18c5dbe45. 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/QZNWQ2067525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa712411bce03f8780bfbbcc30efd5c81eca41dc372d70f1f460582ae7a82e89. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/NLRD52134026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5463b8c0473113808efc48bda0b6b21a5a2ef512906bd66b7fc106473061531. 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/NLRD52134035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b0049a8f4d349e5d1ebc30d4f0d339f812711e79c6feaa168e7b1e63df5622. 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/NLRD52134036.