thumb|right|A shortest path from a Russian word "" (raport) to a word "" (work, labour) found in a thesaurus of the Russian Wiktionary by the Dijkstra's algorithm. A shortest path computation on a gra
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 0xfbaa2de47e983a36a5dca58c6effff9a8c588d13a67a0a49b44716ddfdcdf6f4. 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/fb1b9483-ee36-4347-9e97-8f587b8bd6aa.json and https://artists.proofprofile.net/proofs/artist/fb1b9483-ee36-4347-9e97-8f587b8bd6aa.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 0x9d7ef3049c0565af16e227d71003de0c5d8e975cc766b28473267f9da39a8b1f. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:28:07Z), 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/SEUM71800788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2604a14eaae70c0f29718304234d64ad6a46a468be481c3b4ca6e157b5ef3c62. 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/SEUM71800789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621b97ab1bfb5712cd36503306a1c4bc6f375129125e79102fd51474c00c7ad3. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:33:10Z), 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/SEUM71900423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da2b45d66e6dc31bc403fbfef67a2444572e41d03c0c0be24739ac27adb7a9a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEUM71901012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab4d93c91422ef8142e5c37055ee2bb55d1544ae01d0f063b86682937c9791f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/SEUM71901080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b073403d766fe8b7661dcf2e8c9df16786987a48c3f391b90fa6726ab0c5e2c. 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/SEUM71901081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb971507ea2469bc7a6b78a67e46607a3bb82e0966784fa41dbc9737ddd939888. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SEUM71901082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ab16a61a9b8b089c883b53c58d899d0f42717c52015be06c5c51c9179c71bd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SEUM71901468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aafa6670d43bced7ec9ce221d35a410920427c24ca23db23a6eebdfde9241d1. 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/SEUM72000785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d34dc89196fc738db9d5227fb969d4e1b5fa6d2f851effafdb4f4d514e1124. 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/SEUM72100447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6db04e73ed57ad8ab2b65cf1cdd89ee8fab20dfd190eda4e8e21a6626b020ec. 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/SEUM72101686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8329ae51844d7a5e4dd3551cc886b500f1c4c5d69fb11a9af3cc5652cb915c. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/SEUM72100902.
Cause In The End You Know That Everybody Dies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50887d0a911bbba25326f5df7f521c2dccd8189a13f4d951a9a837a693476da. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:25:56Z), 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/SEUM72200097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d8940457bc1fbb2aca8131c8a0ad619c427b41b2660b1365eded8b88dddb9c. 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/SEUM72101176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eff18ecfe53543682ab9131f1c6e653322d2b56b563e8ccf142475aaed3dc1e. 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/SEUM72200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e15765e1525abc042664dde191986533f661873e15dab5a315599e62394eeb. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/SEUM72101687.
Cause In The End You Know That Everybody Dies (Deluxe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77fa9229a20ed4a1d5f19c6868669e11e7ea9d7e962ea5b80cdca4bbc2c05900. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SEUM72300140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8adaa69728281811bfc2c359944d21587d534459e0b7b81949c0a312dec53e. 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/SEUM72300141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5642edea812d590b1c0b6861fe5558bddb84eb00521ffeae3c787bf0d3c8341. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/SEUM72300143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b83f14f4b0f948cad362ed790251b0365ff09f11e91e97f6671d08956a74180. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/SEUM72301680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8a32e24c512ef33dc7a1e4b369dfaa5a624add01351eedbafd22b200719f21. 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/SEUM72301735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efb905cb0d097b0840cd81a8ec835652fe2b20a19971530e4ed3ec6c6e71fb4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEUM72400143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8a32e24c512ef33dc7a1e4b369dfaa5a624add01351eedbafd22b200719f21. 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/SEUM72301735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb21180f73d65ef4900cd3f4444e9a814edcf162fe0bc2a7aa817ba657d4c2d6. 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/SEUM72400532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08443a687d1fd53759ea390879e20e907a9e9558792f4596864876dc17e4a650. 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/SEUM72400225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17f2447f0afe28cd2b5e9d3072dd408fa96301fb4d17ce2c678f724ce2d07dd. 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/SEUM72300946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec8d6c68ceb9d8975b21f8be2b6e0ebbc8e96382785b651abaaf5a54f159450. 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/SEUM72400473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7941deca73473c89ca79e22da49f830826264c74c8491e0c61fc4adda35b0b2e. 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/SEUM72400537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2870f0d4fb94737da17774fc6dae587b6712e235f906dd1fc3c67835cdcd8b6. 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/SEUM72400533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca701d88f022a37595c88729724e6473986309924e06abebbbdbfe7f7703613f. 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/SEUM72400538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7ba90a84e4d4996d6b42ca0ae1aae077607c852ba59684bb804555d3aca79d. 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/SEUM72301391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdede8128cc711afe083b11b2b0c2a08deb424249a96293675a2f333a433f7714. 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/SEUM72400539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8a32e24c512ef33dc7a1e4b369dfaa5a624add01351eedbafd22b200719f21. 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/SEUM72301735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef872818cf2c5e407026a5e707397974efb54c41c20bd9c1a3d142bd243e840. 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/SEUM72300214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17f2447f0afe28cd2b5e9d3072dd408fa96301fb4d17ce2c678f724ce2d07dd. 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/SEUM72300946.