Kim Min-seok (; born March 26, 1990), known professionally as Xiumin (; ), is a South Korean singer and actor. He is a member of the South Korean-Chinese boy band Exo, its sub-group Exo-M and leader o
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 0x34ea82ceccf4e1042eb06799ef58915992774cfaf6cb2bfb4b055b0c964222dd. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1e8e9e22-9cc5-4287-8bdb-33cda0e32ca2.json and https://artists.proofprofile.net/proofs/artist/1e8e9e22-9cc5-4287-8bdb-33cda0e32ca2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
CEO-dol Mart (Original Television Soundtrack) Pt. 1
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 0x1474edfe29b4385c77b0b2d42bd2b22caffeab302e5ded0ad7a541ca96395d03. 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/KSA012298467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0b551f14dc15c0f61de34349b6f3c652e3d70ad5ad6325f3b73472d28b6320. 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/KSA012298468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3bab589891008355c690a0fe176d99dc5d99d6e3e88284e0ea6902f8ca823d. 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/KRA492300270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b69884fa3e7fe762d63968742bc77d50312ed90f2cc987aa9b5775edf6d8a8b. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/KRA492300271.
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 0x3aab39356078f4936ccd133597e3392bed7937ccda348801439eaab6355ac7ab. 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/KRA302200196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92784c392ad6bf3d31608e60adde0989fe77d5b47b109ee8b805454093953d2b. 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/KRA302200197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff4af23227c02b4a98f84770ec07d564dde642864e0ce04886e8ce6f2460934. 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/KRA302200198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b89827afa3fa8918fb1b2785289ac37d40317f754c1dcde7b432fc6c0db9c0c. 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/KRA302200199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1fd0d298f2490003883989f56cbc19ec1dcd987225b66522ab804438b910b4. 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/KRA302200200.
Mr. Queen (Original Television Soundtrack) Pt. 7
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb3711906a432dfbcb134dd0f003f3ee9603403328d22e882752b7512daab10. 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/KRA301900212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a69d1505f5708b4c5e8361d13fccae1e769629a84d9ea448a9cea12948ac77. 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/KRA301900213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6160c5b7a4021ec4a535b5c0f9c59477dcf878f30ef7bd1d4425f4128dadf302. 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/KRA301700299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bb51a68dee03dcb2e2ecb1758a518ed1ddc6510f5952f4a147791201a6aa7d. 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/KRA301700300.
도전에 반하다 (Original Television Soundtrack) Pt. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69aa7880f893fac6243916ab2934aa8f53dbc1c6cb77661d919dc275ba3c6b1. 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/QZF452025687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09b39ea4202c14428cf172716c3090fd81f867072f46ba839e0dbb1241a0701. 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/QZF452025688.
Moonlovers - Scarlet Heart Ryeo (Original Television Soundtrack), Pt. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d06f37963db3395ea2227206de7990abc82167d5728fea3ab01129735ff2156. 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/KRA491600494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1835a460f3a2e6286c53fb0b8fe1ba4ec89c7434673e051b1fbc32f3d3198ecc. 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/KRA491600495.
School OZ - Hologram Musical (Original Sound Track)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d2fb834b97fe9eb05796e98606e56d23b358559254d2a55d2dcb30b1d3190d. 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/KRA301500704.