Lee Seung-hoon (; born July 21, 2004) better known by his stage name Trade L (Hangul: 트레이드 엘), is a South Korean rapper and singer. He signed with H1ghr Music in 2020, and became the winner of the fou
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 0x0afdd97abf7e18bfd35414a084a834c9a53bca3d220238974c88a0c960de7813. 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/8769f1c8-2b83-4fa4-9cfc-27921c9203fb.json and https://artists.proofprofile.net/proofs/artist/8769f1c8-2b83-4fa4-9cfc-27921c9203fb.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 0xa06857828028664f2bf293e903e5abc98d00f8fbe2d0e95037c365cadb2da9a8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/KRA492100659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c8938cec7347e97385caebc34dc7d51f9781a1e78417140109c520c7d5cd97. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/KRF152100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368c6bb8dea9df86d7fc55a97536699a79d23e50a3cd8d6f54825f8f3c9fe80c. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/KRF152100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ab59c70e11f4b2fcf693cf6984fa7b5bd1b23d0dc155b6753789d1c2d6b175. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:47:49Z), 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/KRF152100041.
Linger On (Feat. Skinny Brown) (Prod. TOIL)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12bd8ce56f494b725a291bbc22e67daf90e8d555c955b810eaf00cb4f5e9669e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/KRF152100043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1ec801b4b439d870ba9360a300931cc3508768e4bcb671932a919bcda15cc5. 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/KRF152200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5ada676a5effbeb8d0982c43d5efaa335cd0faa57b70e0c774c2d401194e63. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/KRF152200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b343d021260a6a7de29d3d7fe4b381b94d496cc73f05321bd187334ed1bd33. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:38:43Z), 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/KRF152200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1ec801b4b439d870ba9360a300931cc3508768e4bcb671932a919bcda15cc5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/KRF152200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f60a41664663c3745d435ab94bca203181947185e91a32b0df13f56f370c3d. 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/KRF152200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a94fc5a7d13936816111b57911d519e5d102d85cfba4d98df8147e2ffd0eff9. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/KRB472302698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbf743fb663dddb21cc69f2b2e120de921be4fbb256f6188e306932a4eec320. 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/KSA002500761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f82e25092f31e75051bb4466d1cb97b04b0afd2162fa06f532e7ec503b41cc. 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/KSA002500762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7cb70bda9b94b7c484565e47f0c008f778119bfafd89a5da5eb11e8e1007af6. 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/KSA002500763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163b8895c0a66db879d5f2f8f13224665457b0b7cec202505915c32a245e6b62. 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/KSA002500764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8711e8ed2ee07ad5eb80b39f6c147ced44014236a1d0d858f4ec40b7ed503d67. 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/KSA002500765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb613173279f1c6fdca3edaff916ec5dfe68f1c73c749776125d1d802b30a9682. 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/KSA002500766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3cb821f18b80c2fd9b83ae1e68894d4a188fcdcbdd50e0c7949e9438b0a8c5. 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/KSA002500767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dff6edb79e10c72dc0fce8ab949b1cf6c6e3c417d8c513654d3082e096a2a3d. 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/KSA002500768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12d85af42de37d03c7246da7f47a5bf4036bb1ec308e4e2e41e28f4339e55c0. 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/KSA002500769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9fc4a75ca74027a87d261b7b2e51f1469753a89a1107f52afde079bd2c93f89. 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/KSA002500770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8886b236d9a5bb788567e060638e91e56a8a255a9f1debd139303ae7be7c121. 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/KRF152000060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5adc6f0471602cf30df550ab434471956aee2e6924f1008735e717a15cfd440e. 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/KRF152000057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a73c105f566dfe567f111f5af67dc3579d474450318f3137872290f461f287d. 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/KRF152000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd8e7c5ae71018696346d0257709193b3b8e7e93ee0f94cad381b8066ab42de. 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/KRF152000055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a3f92ddb80da43f5f3620a73823cedaaf3fbc6150799997f46a01af21411ed. 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/KRF152000065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0e7f61ad6fae16b03ea16d8569a593bafabb991c3c22850abb1f8550ed750d. 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/KRF152000058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22431d5b42f09fc76f2438bcd0e084227bb09775ee030ff08efacd3c3eb107a6. 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/KRF152000056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac02af856ce27a1631dab2bdfb18eae6daf2711c7b56038bf201f44aa89d24a. 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/KRF152000064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b98d2bccb653848da8213e615fede2da9a3d8e4aae7be59ed7e0ca7a9c47923. 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/QZNWW2395861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1681754bea974c5bf8a614400ae0ad1b3bb61ec5b4786df13778043a619628. 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/KRMIM2427561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1831fa987d5af51923b48fa2907f5daea91c897a3845b013cc04b7e67b325c. 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/KRF152100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b98d2bccb653848da8213e615fede2da9a3d8e4aae7be59ed7e0ca7a9c47923. 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/QZNWW2395861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb69af6a40af5d23a658559d73092d52e013d9783abbe95def0908b90d720cf. 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/KRF152000072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d80d8b5b2473778cbc754016710198fdd505624ae5d9a1ae7409315fbf1956c. 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/KRF152000077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b98d2bccb653848da8213e615fede2da9a3d8e4aae7be59ed7e0ca7a9c47923. 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/QZNWW2395861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba61d389742ccfe974c064deaadc98d5a87ea8c3e5abcc9b270bf2ae1dbb9b91. 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/QZNWY2353674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55984113c2e41cc66903c8ffbc4d7e1490637c8b75234c345214a34992cbb003. 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/KSA002302781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace45692d3d510d67afea50ab7c33801ae6e2c42e31bb085afb8b7f9e43b6d7d. 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/KRE132400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef885d5dc758d428c160df10ef01514276931c2b52f2470971fc917b69f5be8d. 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/KRA382404580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d8e30fe94d02cbb5823f923730cfe8edfe6a155800802426a302dfe2b066c4. 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/KRF152100002.