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 0x95edd12fa1c3fd4a4b0a6b64ea332df36a89c4602a4b1be13a0629e648861535. 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/b05af4e8-59c4-4613-97fc-da7a4f8b2bd1.json and https://artists.proofprofile.net/proofs/artist/b05af4e8-59c4-4613-97fc-da7a4f8b2bd1.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 0x35bf2002cfe3efbd905df68fb6ba6dc289d59d0778814a2cfd54f0ad200866da. 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/FR6V89805585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc07e7f9808f147c7017e4f3e8803fca96e044c219b82e226339c28671768ef. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:53:39Z), 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/FR6V89805586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa687da0c9ba1d21e73ff764a1917efd22b7f76fc86c6dfd2068dd817095a6b67. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FR6V89805590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9dece1bb7659a7934459755225533086ba9b73d8d8e96d079bc6497819fcfea. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:49:42Z), 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/FR6V89805591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dadb2f394d1482357c95c57bff98027fcaf8ef97e5fcad545276033e565d1b7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR6V80049324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2093024af185221b1609b238a9b453b73f343188c4988d4cb06e36ce002ef2f6. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:24:21Z), 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/FR6V80049325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5438cccbf6439c2051990c455f3c847be68e8fee957aa6da6a656234f1a65d. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:35:49Z), 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/FR6V80049326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2656ec9cac3e0fe2a63aab770f6a37d11a6fcdcadfa3fe1d59ded0c557f3d3b9. 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/FR6V80049331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc385768a31712f27e805c002a02fb54ef3b466953c58859402e2217ce867c117. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:45:01Z), 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/FR6V80049332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd877d76ff66227140cd43e77aaf44903cd13e660f7e556da4ce5e8f2bab0fc. 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/FR6V80108979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9a34c057d804bc1a81ee28fd26b6ad18807a22898120bab64339caa5dca5c5. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/FR6V80108980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d64a9d2fc6af037359d3b340b8ab5dfbb70d78fb0f4bf946aa2f5409022b8f. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:32:56Z), 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/FR6V80213930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa1cd6ba4dec1fed4b6c4f0ca57247792625b769752ceface81c449e8f3545f. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:33:24Z), 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/FR6V80213931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd1ffc5b8cb645e13737614480f066cf072e3d6b9b11e68a751e2dbc6c9d2ca. 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/FR6V80213932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4264d883368424bc22b2e3965be78875455d2bf85cbf6ebe2b680937855c07b8. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/FR6V80213934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59724a229b13fbcaec647a053762b3801cd35e8351aa98af21ae19ba886750db. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:20:50Z), 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/FR6V80213935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660ce56ecc4c1c2e0afd070d569191748975ac94eff57719e9e0f33bdd4b2351. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/FR6V80213937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b8a801f51b3255a011a7d426d5a7dd212dfc495e0993d41756893427e78c05. 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/FR6V80213921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba96578fc048e9d0f390915e4b355b80846a2bbc848aa0af5618a58a2b123d50. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:06:11Z), 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/FR6V80213924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d7ec1818b531128bfa7140be867b9e9593e96c2212855559a16fd62b236428. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/FR6V80213925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855298c94ef7269713bec1eec1f3464464fb2ec8d346ff3be60943e29eb112d5. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR6V80213926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff3095e738ea2238c39119bd313064d5e1e40a96394518dda5b8057e828d1b1. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FR6V80532766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafdba55ab35d84fb56ed429c5975766b454167182ce140081c9a343e519bd9f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR6V80532768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5261b0d64d91a362bba9a2d6362ead945f39f4ea4a01787490355fb36c355738. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FR6V80532769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fac6351cdae0b9d70a540005df64c6b0830c34982f396c01a0a6c4178d58c34. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR6V80532771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90e95153e97d9836dd51fc7ffdd6a47b5fce383b151de1fa50b01fafd217056. 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/FR6V80532773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418e01b23fa463b6c86fe5600ef4512bc6249848b9b27e6a3b409f0cd6f2d2e2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR6V80532774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd747026fcff5d54c893aca374e38d67457454e20b045081dd75089c6c9f80f. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:21:49Z), 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/ITZ241400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f85c019325ec3ec8a0c1691a0b2ffb0e2050419ce0caac49747e1d08cdc8e7. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/ITZ241400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5bbc7e0deb091de034d42849267681c7380456a30e8ca565b683d8d7753789. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ITZ241400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebb5d088246067641b0d070d0141d04d25110c74e2dd75738466ddbbc1cfa1d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRX871519484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e2048f9673f59f45dc51bed5e426a0520b0215fe6ea0ba59aec2ad771c1a02. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FR10S1646260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba53a09e7459df4856558d979951dd5304bc6c8dc2f1b3b50c9fbe2da834cd4. 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/FR2X41658874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd399200b97958fece9484ece9eaaebe0e2ebeb17d158bb7b6f1ddcb60cdad852. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ITH471705101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07bad39f2d1151d814f726fc3ea521a4ce0b1ce7351f218b2e6f88fc27d97d78. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/ITH471705108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48aab5aa608e17ac03c87da20b35ec25e4a1344d7424743383fe7a810e7aaf40. 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/ITH471705104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a5082be3acc154cc22f3e4490a782865ede39b1086873d7e4113d773ea8868. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:21:45Z), 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/ITH471711101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b597b749f1d2e9acb6143bee37b46c57b6edee3c4fbfba69945655c3842e17. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:22:56Z), 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/ITH471803401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448af9807a9961f6adf52cc87937f1916dae4aa83ca1cc74f1aab24f31f2cb51. 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/ITH471912101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a86cb56d0625be68e137910053252b684165eae15f1f1e55f4bd238fc761d81. 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/TCAGF2210647.