Sevara Nazarkhan () is an Uzbek singer, songwriter, and musician. She is awarded as People’s artist of Uzbekistan. Her musical style incorporates Uzbek folk and contemporary music. Nazarkhan has achie
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 0xf92465e65467b3a2c99873931f42bd19d01c7778b89f163a4442484abc83452c. 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/923deacd-c03f-46f0-9029-f5ceb8014288.json and https://artists.proofprofile.net/proofs/artist/923deacd-c03f-46f0-9029-f5ceb8014288.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 0x1348c7626c887154f3053e346cf1583146a113324f89d79c36deaddd2b4a386b. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:09:49Z), 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/GBCPA0200674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713f2b5e495f0cecf3f1f0a375f232ec9e6e30a9e966f5050efa0fbcb9f742e2. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:39:05Z), 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/RUB181352809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9c5e46d98355e6181c6d6b8c36629547912cebed65a59a658463080aa4d3b1. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T18:21:28Z), 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/RUB181352812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970aca050a015b05df2a46ff8fe2ade36389a65c556c2ab3161762d8c425e1fa. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/RUB181352101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f9d337b648a8fbc76b28e420805ae52c33a34cb1f72ffedcdf2681c1798bd4. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/RUB182159001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b810fe15b9ab7e9160479fbdc360a3d697c63e92a38edd5e7481d67198af9b9. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/RUB182159101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6aaf8f3eba3cb7ef11e58929cee46a0f3e671277fa0921f209cf5d99e3ece0. 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/RUB182159103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001cba0c3978519ed08c287582a1c183368d20c0048fc6c40ddd38b6ffe4f38e. 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/RUB182159104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15bbc285ec31b7f4c8633b4f575fec53b903fc6bde2389faae5d4e375046c66. 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/RUB182159107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93df5acdf9bc45dc42d31d35037ef0943f5b94fbe6ca1d89a64216653609e2d. 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/RUB182159613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2330a433c5213ff22a1d3f49b4f909298ed477d27c4fd99d586d3a6b047874f4. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/RUB182159614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7664b35f0d0d749524638a911ea920298e107ba6f8ef7f1b967354d29861c509. 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/RUB182159617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73572ee4b525c195a247ab4228e5d5c20058ab24df3bdf7a5ef4eb779d580a4. 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/UKJ8H2303002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2bd32d4c4a7d14927d7dc8017575ea35df28cde6609f5820714f1cecdaa213. 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/UKJ8H2303004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df8fde34a51329c6556bdde8c5b9eaa30d5b248f429d33c0b4d0eb7c1e6cba2. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/UKJ8H2303014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73572ee4b525c195a247ab4228e5d5c20058ab24df3bdf7a5ef4eb779d580a4. 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/UKJ8H2303002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22dd3d2bf789e3a0e487636af767b42d7f3c4713d21704bdbe24e56afcd047b. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/UKJ8H2303007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07f8625c40344c87db6b413803e1853ae48c2a90078a4380b4ba2a6cf78401f. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/UKJ8H2303009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f9049831db6749249753e39c7e6bca0bd4620faeacc7a9571ccb84565df5d6. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/UKJ8H2303011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e2b9e8505cb96d48f5b92386116503b94e8eb383c2ae99fecd54a2d3ba4dd9. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/QZMEQ2410828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93951158cfb00852a95fbea15f0d11dcc9e7e63c0dd23fce99502a23ab49a7cb. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/TCAJR2525835.