Lee Juck (; born February 28, 1974) is a South Korean singer, lyricist, composer and arranger. Biography Lee Juck was born in Seoul and attended Banpo High School. He graduated from Seoul National
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 0xd0f06d56902930b7683666b8a262a398a94eebea3a0d82eadebcda6a46e366a0. 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/f11c78e3-0b62-4178-b64d-e26535b56fea.json and https://artists.proofprofile.net/proofs/artist/f11c78e3-0b62-4178-b64d-e26535b56fea.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 0xe25e83caf107d2d5ff6725c99851800cc4be972b23b05dc38d220b549f07bea4. 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/KRA381210049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00baa146e1d62063f44a405e0d8849736667bc6577205838f3407db7a3538aa. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/KRA491000242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb95f9710686568516837be25a618fb7ad1b1beb9229389f8c8567f4d77aed97e. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/KRA491000249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a9ce00d254ddac3cdec5fb3174b76aff24e6494ccbb4f33ce1030c774a1c91. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:02:45Z), 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/KRA381205384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91742de167c07d3cb3987c73525e15b88ca35e534d9bdea4a78cbab26676aa03. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/KRA381205389.
Reply 1988 (Original Television Soundtrack), Pt. 2
구르미 그린 달빛 (Original Television Soundtrack), Pt.10
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad44a3103d170f76a6f8ce4ac711db4e7e9803225a0c8a797a20cd4e286500f. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/KRA381702836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3225ccf236cfc6b57a913cb9f43d302e27969ef05c14eb370c3f574454c65a0a. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:27:27Z), 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/KRA381900821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f987565ebcd9313ebab3c15eda0b899d02073226314a834809a874e045da028. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/KRA382002080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3857f8bcc79b818a9b5113be1eb2b3c50bbbc013c8a3633342fb264d16e1d30f. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/KRA382006336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84f9224d9465324f350ff35dfed4511ff6e1420a07cf81aec9e72db9fdf453d. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:00:44Z), 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/KRA382006337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e38382917b56401ff7dff8033a74b742622136d55bda1d6b1537ab30c49157. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/KRA382006338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33383287f9a7f143c5fadf29aa2f363d2ba65793c75b2cf933d007aab2b9d9b9. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/KRA382006339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e0f629aee2956e95b0085f0b8c64170e5cf1dd8d78f0b7d04fd41959faf00d. 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/USWD12099952.
Walk with you (HUSH Original Television Soundtrack), Pt.4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5575c3275d2c6c55a6fd589494a4d1b6ae80de1991a00333bc8e59128f5bb94. 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/KRA302100013.
House of Lies (Original Television Soundtrack) Pt. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de9e0bc33c80bd7ff0e2feaeaf3bf4fc9698ff928da1b1722479defd14747ef. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/KRF702200210.
Romantic Doctor 3 OST Part.6 (Soundtrack)
The Dream Life of Mr.Kim (Original Television Soundtrack), Pt. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1306c0d20152606022a8dd0b2431c9fc8504822b23d62185629b735dc76f3140. 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/KRA381002293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71afd8ce60040a833d53d3918384f8c7dd9b57b908fdec6ba750d4b50101a311. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/KRA382204943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30589b97071e80ec2c5abe0257ab180cb2e56da2e24a0c9947e61720dbc4988c. 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/KRA491402322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ae78fe15f5a1c2c61e0e70b91021566729aea67b0d6244bc558e9a62993073. 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/KRA350902141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1614d3824f8da95a6688c2c7f669e97958619808c0d6169b28270101c89e5e55. 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/KRA381210118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2b64ad4bfca21b17040a0d7ba282bd4317f432c9068e677e938a16e4b9e568. 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/KRA381210119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9155e7c7a7a92480a62c4cca89c7ff7e127188bd7338a2932b28cae82058249c. 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/KRA381210120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a411f696cdc353ecd42279adf0de9f3d88e86ea25b5e16a7e4351189f7f1e8f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/KRA381701521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d94fad764cc4051ee9f0f3ca9f07bc4f1afdf89bb54a9bbfa37c1937afee18. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/KRA382302596.
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