Kim Jeong-tae (; born January 11, 1985), better known by the mononym J'Kyun (), is a South Korean rapper and singer. Career Kim first entered the hip-hop scene in 2003, under the name Jung Kyun. Afte
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 0x2826137f4dbfd9577c9c05f5c090c5158041453e8b4e4b3b42b1fd471046bd38. 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/f9979d2e-4d93-4b92-b3cf-5dcf7ea4b15d.json and https://artists.proofprofile.net/proofs/artist/f9979d2e-4d93-4b92-b3cf-5dcf7ea4b15d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
WE REMIX (Feat. Paloalto, Nucksal, CRUCiAL STAR, Khundi Panda, SUPERBEE, Juvie Train, KAMBO, FANA, QM)
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 0xbfefc906d2ba9cc87b76b792926193509a3025775a5af42666cd0c4f51a1651c. 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/KRMIM2301625.
BLUE CHECK REMIX (Feat. Blase, 365LIT, JUPITER, KHAN, XINSAYNE, Roh Yun Ha, sokodomo, KOALA, Jambino, Lee Young Ji, Chillin Homie, NSW yoon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440de22905269ccabcd1dc3cabab0c7219af68ff0dec05538f9c9c960cd44137. 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/KRMIM2301626.
LIKE WATER REMIX (Feat. Jambino, XINSAYNE, toigo, J'Kyun)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e108a9aa99e0c2be14ccde91f8e1f7317cddad95bcc6cfac5bdeea8e948aa5. 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/KRMIM2301627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563b1b984e664a0f471d7bd123a774ced2f222f3b06d564f3a278434fdcb8925. 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/KRMIM2301628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b5212590e08dce5741c2152174986a9dcf598f01d61b357bf554781c165278. 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/KRA492201237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9989fd7ed366d8702faf967baf4361a8cfe2ef2afaea5b46d6558d2296ace119. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/KRA492201238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30d9ef93f7e961a6fba3c66ac8dedf17a19f78c1f5fa6581bc8fd58ba23e718. 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/KRA492201239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a14a8bb74fdc1f8745a99a0b1c8d73e021cf8e38bd814c40f771c0f069da3ec. 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/KRA492201240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f14a697cbb95a01a5d27e74b29460a78e5005e35723fa3dc7bd269fcbc5acd. 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/KRMM02325385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79dc9f99fbf80f7c9cc755930f10a635206d60955e7cbac204578cb3a0cf74e3. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/KRMM02325384.
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 0x6d0306e745a42793dc4848e1181715d3f571d793633ccfc1cebcbcdd8839a304. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/KRNAR2313745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001e60a42949ad2c0301faa7bb810abd00dfae957d0abadedbf30aa623fe0214. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/KRMIM2300598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0a47fca3cb3bac5d41809e2653b65c394ad1770a8b77bd97e2a4fd177345cf. 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/KRMIM2217496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ccf7f790f7cfbf12ad914d74433e948e5b6dd0202246cd1e8d36c9695e1cd4. 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/KRMIM1810576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a683d36796aef9fd0b78460602008496763bc0079ec309dc69911e415cf199. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/KRNAR1700691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a9decd28c8c2f1b89863f229d6a3a250198b371fbf0b040527ad5a5683bab3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/KRA341449052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d471c600d27019da7df249dd97d33eae2a7443e38da4f551e4dbc93b50a436. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/KRA340906007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25753592ac3bb5240ed52fbaff75de201b920fdb1a5dcd03de83305b1263a657. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/KRA340906010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d9d5c4af71dc197997ba67cea25e1449d0593fbf3a0bdda3e1c56fa625f92c. 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/KRA340906011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e6a4055dc0a9a61b979a86f6c4a59f099dc8bc8ab6e3306fe69d6ae9e76882. 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/KRA340906012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497189799ef0a0e35f6a5aca54abedd3d471fdbc0601ef7dd43c0640405a1a60. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/KRA340906014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aeb667c951355e45d803d41a32cad7c5c5e5d37dc3a4005be77f56388179d96. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/KRA340906016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9da4e127a6c08e5474fb612106360e6df11d48d359ecaa32b634560920c7e6. 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/KRA340906018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188c3a2759b2cbc84ab7a6c39c12bf2afa6c3a9cbce7697eae171d07b93afa92. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/KRA340906020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ae380fd88fa93014ff7561b8105502072e81d9b8c4a870c09348c26df12295. 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/KRA340906021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1c854bc4f3dbf867d3c66ad1de0efc06f59a50f443cfb2bc41828f2e097f07. 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/KRA340906017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a62ec4a53378a68819acad54647a3595e79f5f5010a68fe5c7f03a826ac4c32. 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/KRA381207619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1669e6af9733e9f706e4266fffaba69a7e3ce62734bd34d8c9f24b184fc3b39. 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/KRA381207620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6eb22911b19cb17b8cc93677064f4385bf467d6fee8e718431fb256a84e9dd. 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/KRA381207621.