Kye Beom-ju (, born November 8, 1991), better known by the stage name Bumzu (), is a South Korean record producer, songwriter and singer. He signed to Pledis Entertainment early in his career, and has
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 0x367aa36132a1890f3797945ac775fe16ebb7d756f13c2fc558262971495c4d22. 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/95631f3a-b0b9-4048-86c1-cb62d467a9b8.json and https://artists.proofprofile.net/proofs/artist/95631f3a-b0b9-4048-86c1-cb62d467a9b8.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 0x9994453d6b0bb5ad65a7acebedb37ac9e89a16fa3193e1de478af2d27e4f1ae2. 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/KRA381211293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a7f70aed29494ac6b14e8f2d484f78c3cdf0a9b0cb4a77965fc5b9e3135426. 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/KRA381211294.
GIVE IT 2 U (feat.P.O of Block B & Niihwa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62de57511e4be9e9f5fc2e100a3c4a4395841b48004a69f7ba105fc8fa2a71d. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/KRA381211295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7ba0b086acbc6ea36937ca303783bd67fc52e26e17725d5a7432078ff2d65b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/KRA381211296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3c979831a11d7bef0c4e39ad16ba7b8db045a0b1f9096fda3994ca324d3c53. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/KRA381211297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf42001e4aa74ceeef0bb011049c2730161cc9cbdede78e6c7e25b6687e682ba. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/KRA381211298.
I Wanna Hear Your Song Pt. 5 (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8731e5719a9d0351d769b81bcf6ae9278658da6b1ae981f0386d0a69a4e9723. 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/QZEKE1917325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef935d52dc6033e1ca97f23ebc298a78b2f3c58264f513acf0f337ad59570062. 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/KRA871800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe670b87dabd5a32d4cb0fbeda9653da63ca415b237cfaab97909fa3e3165a279. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/KRA381702902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff4899343bc48c08783341d87e275a2a70574fe331749bf59658d38b7a5026b. 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/KRA381702903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bf95083d847f64f66bbbe184b6f973140406daa8ac2e7b416f96d41887e907. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/KRA381702247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf103e46f540501a37cda20efae2e424e186e42c4a56f59dbc1bddd52351bc6e1. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/KRA381702529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd81bc9290bd102b445f4f182d04d91e68d1a24afb5550df4fb4d45760887fe. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), 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/KRA381702633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d1435603bff2b547af92ae6364863b4055bdcef0064da1ebef1a0306d1e9ec. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/KRA381702904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd81bc9290bd102b445f4f182d04d91e68d1a24afb5550df4fb4d45760887fe. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/KRA381702633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf103e46f540501a37cda20efae2e424e186e42c4a56f59dbc1bddd52351bc6e1. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/KRA381702529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bf95083d847f64f66bbbe184b6f973140406daa8ac2e7b416f96d41887e907. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/KRA381702247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18d33368b35bb2f4da98616fe210558b2db3a89d675e2bc46804eede62e9e4e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/KRA381701623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c3713d0ece452e2b7b74e9cf204cb63c9a16ac7894cdbf8020ef9f13f02596. 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/KRA381600415.
Girl Who Sees Smell (Original Television Soundtrack), Pt.3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c83188c2797a33810b08b8aaa10126a28d511aba8970af440b3ed971ce0e5c5. 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/KRA381210409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92693eb523b83229fe7c0f6fd243d83eeda7815fc5ce7b51eac8c876ee2d3926. 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/KRA381209768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ca8efca5e66e6adf984d63ab238e05b6e1eb433e9a4a4031d45b976b02fa7d. 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/KRA381209409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7abddfbe3e083d2dce5876279ca1f1fb0859a495a7407eafb8156d12682eef1. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/KRA381209412.