Nora Istrefi (born 25 March 1986) is a Kosovo Albanian singer. Life and career 1986–2004: Early life and career beginnings Istrefi was born to Nezir Istrefi and Suzana Tahirsylaj on 25 March 1
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 0x54c9b80196888de304a00c046ce4e4fad47ab8e06270610a6687d18c899dc8cb. 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/b0b0f482-c249-4324-bf3b-6e37e4ce67ce.json and https://artists.proofprofile.net/proofs/artist/b0b0f482-c249-4324-bf3b-6e37e4ce67ce.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 0x1e54cf1a6e164c1b5c380b31c160d22ba25887d3b0f55502aab8e94ed06999fc. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/QZ4JJ1685841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0edd6ef5080f5f419f047dcf22392f368228b81b068369a4204159b2e00305. 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/QZ4JJ1685948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7314846bb60973e385ed2f40b9a4a936650f228a9ce4f993ddda1fcb27794589. 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/QZ4JJ1685961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404be63eca913059529287fe675a3c7de615b6e5a384a86cb8226ce3f911ed3b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QM2PV1707613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc37ededa4adb57f6f06ec411af76b1d69e0fa356eecd656fa42ea6f56c8ff0. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/XKA031900146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de1d10ad395cd8f5df4a542e2693fc4c8c41954f04c77c216e2063fcffce1d1. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:31:03Z), 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/GX7852400603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84498990e2218b7f11a1edac22e88d0f60d103c50633ec095b24fc8d0fa9cd5. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GX7852400601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd574ed8a2b63740e8c9e30f4d3c5c9101a19fbc7a6566a81a728718d5e96d536. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:09:06Z), 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/GX7852400598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873ecb3d2ce1ef4ebc3ae40cbeb1c46fb735e0609c9d0774782b9e095e342c78. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:39:27Z), 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/QZES52267828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0cd6a49484f4e6fcfd8ff887b284cb1897de56fd208aae80a8dd83e0b072d9d. 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/QZNWY2282587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196bdd74a3ba3473a69a684277deaff70d340082f32bf8d4f3ca1299e98150ec. 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/QZNFJ2306623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196bdd74a3ba3473a69a684277deaff70d340082f32bf8d4f3ca1299e98150ec. 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/QZNFJ2306623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954099f14f9fe1317de24595dcfcf88cf4d0b6919e7432bd481243a22fd83563. 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/FRX282598203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850886e980f244227296e780d0c6c6833d30007759df965622b6c326bfc80169. 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/FRX282598206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f5818c6c660b85e45f231278cbd393976af1bef3a0b6281badbc2f09b7521a. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T13:00:47Z), 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/FRX282598207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6597ee9d695f061f42543f6a663849bb8d7d39fb515ef971e6aea50518c4ab1. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/FRX282598208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe776654957ddc937ba7082e71328f7100b8f7dc178878f270e3d4166b5b260df. 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/ALA091900179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf00a54184f05bc17fd7c078af45e1903eb29000a12cbcd900d65a1b7ea61ac. 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/TCAFQ2184187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a203ca1abc5174d6b0c21540266cd20097eca41bfb43d9c57f3120b22b37db5. 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/XKA032200070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5b520c1c4676687afacb2d23fe16c47ced3f67561fbbcf2de19c354a526888. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEKB72093487.
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