200px|right|Narkutė in 2016 Ieva Narkutė–Šeduikienė (born 1987 in Kaunas), also known as Jieva, is a Lithuanian singer-songwriter. She grew up in Šiauliai and her parents are musicians. She studied p
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 0x7acf4d57b36c780d5fff70f6dd1394dfab94a261f82f3db732489c352eb87799. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/142c6fa8-13dd-42ba-a83f-39a1eb5eaee0.json and https://artists.proofprofile.net/proofs/artist/142c6fa8-13dd-42ba-a83f-39a1eb5eaee0.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 0x4e844adfbb1f7de4ff9e4fa616f7bb2c86808d2c33326e63f946ef88ce4d9a0b. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:14:53Z), 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/TCADY1834097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12af2bf41fffcee1dc03444d31bd6f60314707efd12274b4c63ecb4312853338. 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/TCADY1834101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b577258d29de9eb482bbfc108572f2935a2ef021ffaa5c5cb460562dd5d2da. 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/TCADY1834283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce7dd57a2499770daae809a43e4d1a25817857aa808b41d30addb7c4657d2c0. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCADY1834289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0f0c7ab8ec636bebbcd6b684e2fb81791241d656a3e71b1d4f1c12047323d0. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCADY1834291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946f5b7e8fb0dcaff7243f30e1e99131a59052b31d3f91b962365c2516cfbf1c. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:37:12Z), 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/TCADY1834296.
Ieva Narkutė Sutinka Lietuvos Nacionalinį Simfoninį Orkestrą
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020c46670506daf04872be2b57dcd3c9ea7226f36cffe72a98eeb7a92095e270. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/LTA701800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1bcb01bd25dbf4cb15730c2d03bc925796ebbe61ba4494f53e6bc756bcab96. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/LTA701800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cb41d2f7b137d18a86b59319b44cfe5e9431accfdc9f8111b863d1da1f6d0a. 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/LTA701800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb4967ced548da061ecc1d5f9753bfd7b0b41ce79f377e3f2e82c8b389a2fa1. 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/LTA702000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e203c5faa24e5fd5cff0cd878a21e986276a05ca0863b4fe85e6d48bc4c7c2. 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/TCAEX2082672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10508abd6c4bbe330a9294fe8ad0ee2c88c5d3a0c7216e5d8318eadb624a5e9. 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/LTA702000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4ac803d845f05d062eedf81b3ef733ca47760a78443fe19864c8b17d58cae2. 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/LTA702000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb4967ced548da061ecc1d5f9753bfd7b0b41ce79f377e3f2e82c8b389a2fa1. 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/LTA702000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4ac803d845f05d062eedf81b3ef733ca47760a78443fe19864c8b17d58cae2. 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/LTA702000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427287e19f0dfb2568d5ea53f2d02f300ce352eb01b41d62d736dd6e53c9e16c. 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/LTA702100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bccd27cbe7a248d2e71d3665f3ccb5aab48728b8613b41d16eaf9d03798304b. 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/LTA702200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e203c5faa24e5fd5cff0cd878a21e986276a05ca0863b4fe85e6d48bc4c7c2. 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/TCAEX2082672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10508abd6c4bbe330a9294fe8ad0ee2c88c5d3a0c7216e5d8318eadb624a5e9. 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/LTA702000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112b21aef91a3e5d44a8b14c3c29baeac42e46f5701a6d0b1c366d8a132e0c13. 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/LTA702100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fed839496cff2f092da60b4c1e3e8beabc51fcd07bcdd7d89392a92c8987756. 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/LTA702200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd730c15d94a9671e56b1e680d45a0623cfa8313a2feb662a061a44025b3bde4a. 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/LTA702200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c608ce127f15e5dbf2583db00fe68cd15216c07fe2038f6027baa10efba7b9d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/LTA702300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518b7f892d27c7d201dc85a51693edb8b2e385d355f0dd34b88a4d3765ec408c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:36:46Z), 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/LTA702300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9457ed2d5d07a9cc54af68cb2a7ceea6b4d003155ea812006ed4728898a77174. 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/LTA702300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6efe9f74c5cadda6d7dd10a3f0c7dc3a2b6d146c93267f0d3e4dce24176dbc4. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/LTA702300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92188e6252b664cf9be1e38bec44d10c8fd6f2ffa4c5f1c29986bb57f55503c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/LTA702300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fed839496cff2f092da60b4c1e3e8beabc51fcd07bcdd7d89392a92c8987756. 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/LTA702200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa616d4442d15c40583addb730847ed9caf94db157bfc4fad7f62f020530c997e. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/LTA702500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356eb6f1ff1e5653f8bf407006a5923fd71c566ac73ba24febfd8fa3e40d027b. 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/QMFMF1520483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0bf273a278a04be4b0548283cc784fa81d44d8fda58eda590265a79c1392de. 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/QMFMF1520484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd434b85b9113b15e74173ca2fd7751ee3c8db95dd9adefc14b2ed3069ee27fef. 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/LTA702000025.