Jang Na-ra (; born March 18, 1981) is a South Korean actress and singer who has been active in both the South Korean and Chinese entertainment industries since 2001. She first gained wide recognition
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 0x4d0a1f643790855d4afa2ad4588b63b0c0ea9e54a3275b518e2f574295c6adf9. 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/09243d6f-2ae7-414e-a431-3ceb5d3d1886.json and https://artists.proofprofile.net/proofs/artist/09243d6f-2ae7-414e-a431-3ceb5d3d1886.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 0xb66083c000dd5759ab4e27ffb3bfbfddbd7cf4637bf8f34047266e25f4fa68a6. 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/KRA340900221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf347f9300373f59ce39849158822102cb59c342ec2def802112701dd7fec7693. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/KRA340900225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fb1ab39f0bd59955d1b2e12fb1955eb3c083546cb941293f9976919703c8c9. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/KRA340900238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c12765595511714c6462f77de82e2fe33e3bc1c8f10117a1d0f8e0597b82d2e. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/KRA340900244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e54125799b51fd495eb80e316d6d161314b869917fe6219fa4a04192e95075b. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/KRA340900248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13b69d89cf7831f9fa99f6540b83f32a7f51dc8c3fa76b8e21822bb2c6f2a87. 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/KRA340900253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644bcdb006c9fe3f73d42c04162b6c65de97bea59f15ca8742c80debabda4c28. 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/KRA381000094.
Jang Na Ra's It's Alright (A Hyun dong mistress OST)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78507878eca5711921ca82e2cda3b9ea785852400c06a505c151ae9a81b8fe3. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/KRB922401069.
Baby Faced Beauty (Original Television Soundtrack), Pt. 1
Baby Faced Beauty (Original Television Soundtrack) Pt. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ec0244064283d01089fc900f15fab6b52921e1fdb3c653601b0347228023b6. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/KRA381001519.
Mr. Back OST Pt. 4 (Original Television Soundtrack)
Your House Helper, Pt. 4 (Original Television Soundtrack)
대박부동산 (Original Television Soundtrack), Pt. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe56942e3fa5280ba2ad8b80fb3c8b61b4632e2367e5ce7b79dbfa46da338470. 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/KRMIM2120662.
대박부동산 (Original Television Soundtrack), Pt.4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fedb8bebb934c303543c30a62a647f594dda1a0d6933059ac661feab0e399fe. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/KRA341779360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ede2bcee2916d8c31731ba65fce711d31f06a23d160c1570159c725e275642. 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/KRB922303651.