Jang Da-hye (; born August 9, 1991), better known by her stage name Heize, is a South Korean singer-songwriter, rapper, composer and producer currently signed to P Nation. The name Heize was inspire
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 0x9ff25b391936fcc98b4fbc19b3278ab0e09dafe59bd60d517f85ef0fe7ff6f3b. 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/24739452-0b7c-4a02-994a-1f456f599954.json and https://artists.proofprofile.net/proofs/artist/24739452-0b7c-4a02-994a-1f456f599954.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 0xc9f4defabd308105e5908bb39f86c0e36c5d13ef93ee3af9562c6d3d91b80dd8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/KRA382320113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f9dc5f53f8c0356ec262f0a74c80f1d9f6f25075a6e234b60c995768e979be. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/KRA382320114.
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 0x04c30fa9c72cdf07411b16124f460641e552c8862bbf53d6f8d1e3de1f5b97df. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA382007092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0610a750f2152e3103c4e66aa984b4d549657f8882d6145a5929f800afde71f3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US5TA2300091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2833e27c31a995df2c5b5302c50cd3d88b648651e78e279e8c3b2b90c11fb564. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/KRA381903246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34dc3ff626fb95af8f249f5851941564ed82f4a74ea6dbcc704d442854abc847. 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/KRA381902020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x673d5bbfc2c36d00bca4476e3a5b2ff30c0c9b85c076f7bc478939745f9a1032. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/KRA301600031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6c5221f225cb9f7de436c5c52709b37188c8ed1a0a890956ddb9c912b4c924. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/KRA301600032.
밤하늘의 저 별처럼 (브람스를 좋아하세요? (Original Television Soundtrack) 스페셜 트랙)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f239a825402070224a45634d7041edd20b502323ba23cfdcd5daf4bf26ace3. 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/KRA382005682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c17c155bfa2721fa4f4322a4bbaa708e583bc18217484debeed74b51706282a. 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/KRA382005683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82e00c7a983ae6fe3ce575634f54d2107be1c3fd915f9e5eb0fae5b61493c3e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US5TA1700094.
Our Blues (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc24f0fc04f70792cf883c089f572d025356986c943d483f6cfbd5e02d160ce. 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/KRMIM2213610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e40dcfba807c7945d59cff9ceead03378494b9597eaa91aa0323328f8c70bb. 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/KRA491501033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf98d3a075e0a255f07d1ee8514080227ef00ce21b68a822df56583c79eb18bc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/KSA002402110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61741389f010a2c9a0349d238aff15a0fc61f35535f09a7444092739ad284843. 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/KRA491800462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa191a6afb51ab8d96baea9932e4499159a6926ae13784fbff141531f4eb2f212. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/KRA381700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863ac6443331e0c7b62d61d69cb08a1249878644dcfc38f5ce391bf4ea3ff55f. 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/KRA491800172.
Unpretty Rapstar (Don't stop) [(Prod. by D.O]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eaa2e66985f927729fb6ba57d7a2ed497474988e752b06308894a68eca95b55. 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/KRA491501023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dddc0173d4aeca23051362dd8d442030fa2da510407a287a929bb53bf237442. 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/KRA491501024.