Ekaterina Yuryevna Shilonosova (, born August 1, 1988), known professionally as Kate NV, is a Russian singer, songwriter, record producer, and designer. Alongside her solo career, she is a member of t
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 0xe794ca57082d381355c25ba3081034292e11c57f9355cbe130461c4f1d9333d6. 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/6782436a-1fcd-4b28-b81d-a9a59abdbbcf.json and https://artists.proofprofile.net/proofs/artist/6782436a-1fcd-4b28-b81d-a9a59abdbbcf.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 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 0xa55094e31f61239b880f98bc2ee958cf0f9da2eec14c2005ce802e72286072ae. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/USA2P1615193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeaef38b49f9725eb1811d5d3f7032f504e6e0104d6751a71323be870ee8d0c3. 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/USA2P1615195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ecb64c26a5b7260b9ef2e7626019849a582d91653f0b560edb0013dda942a83. 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/US6PQ1800061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd319728036e8d3e7388d9a2380c8c89c66fefba4ff758929b6c526b6475d09e0. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/US6PQ1800063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e598bc539e2f78ca34a6fc1ec56a89a0c95ed2ec20316cbfcb0d5c7fcfb17a. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/US6PQ2000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae99b61c9fc44407ffc3a11edb0ea2c0383ba3c1bed93e2a86d0e19a6738a09. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/US6PQ2000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819a8af5b9e754a5b255c7ba8088f7836235cc097a2606a388b6c303940ad301. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/US6PQ2000027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8971ebac9cd1df8b629f5887003c37f71c302f6484db836fd7514eb6d2dd725a. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/US6PQ2000028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e53d3d70bec853f37f5392601815afd6de029782b9fcd676ad6cfed0db112c6. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/US6PQ2000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b7109f84ed6f9ce05f18e221ae8da793d4580ab041c8fcce2bef324e009a87. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/US6PQ2000033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329c2793578231f33c3cdcddb4be783e75ca2feadaccd2e792c2f34f7ae9834f. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/US6PQ2200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff02015696ac40581372f50edfd03ab661156f29a829a05ae7703a37e4bbcf1. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/US6PQ2200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336cd8769fb519d2533da210e3686ada3edfe460382b5f954f6eba10211e246f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US6PQ2500061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f52008709d1a01151fd0b7fff84beedf7f6677440bf5c4c85b751389bd74945. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/US6PQ2500062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0db1ecc5f9282a48b4519b5ee4454b6fca670de45ae751419513579cb0ea3af. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/US6PQ2500063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305e33591cd6bb549a9dd111c43e6b0b1f52ec0a189c6ca40553a0d5eb0f01e8. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBLZC2000095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe510aec9f84328dd905bb05c9d2b73623dd47eac14ec8b710a57d78521f2cc1c. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/QMFMF2005115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe510aec9f84328dd905bb05c9d2b73623dd47eac14ec8b710a57d78521f2cc1c. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/QMFMF2005115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672a4e0a630d0744584f727129fdf499956094e15e293ee66b0e81c3137bb82c. 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/USA2B1802298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4487b1780c337c90e9790c66e775994818ac7264811bf2526e178018560489b9. 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/RUUM72000758.