Kim Joo-young (; born March 9, 1991), better known as Jooyoung, is a South Korean singer-songwriter. He debuted in 2010 and has released several singles and two extended plays, From Me To You (2012) a
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 0xb1667a12136aa4268be9e23d36caca4e5915fcc928b7dfb82e0f3dce040963ce. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b92e0d54-dba5-470f-a7ce-5fd7af81925c.json and https://artists.proofprofile.net/proofs/artist/b92e0d54-dba5-470f-a7ce-5fd7af81925c.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 0x5cf2b1c0ae6b8354816666add04cb6aa1791bf46c2b4d261c83980f3392de10e. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/KRA351000728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac2f4c89057eaf185d86951dcc4f462f3453dcdffa01c8d8e56bd3e0e25754a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:04:34Z), 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/KRA381500087.
Remember (Original Television Soundtrack), Pt.2
리멤버 - 아들의 전쟁 (Original Television Soundtrack) Part. 2
리멤버 - 아들의 전쟁 (Original Television Soundtrack) Pt. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d94d58cf65c0feb5307cc0078ca57f6994d2c973b8cd9025b077f97a97a3c01. 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/KRA381600048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d94d58cf65c0feb5307cc0078ca57f6994d2c973b8cd9025b077f97a97a3c01. 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/KRA381600048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94e5ef94376b58c0f15997b018ce6a058df17964111489262fbc75015e297cd. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/KRA381801166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71fa1a3dcda2c3a332899c7339e1d388753c8900a13d8989d2744ea84c957786. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/KRA381903130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ba756e1c840ca78ea2ff11e9a08b623f656568dd232f1dd9c1979b5f51f09f. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/KRA381903432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d211befa741bbfca633cf014b13ee18ce22013e473355ae9c727e9526be4e5. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/KRA381903433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f063f47ebd62592b06c1c337dcd669ff066af08b471dbad0b68ba2378bbb023. 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/KRA381903434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d508d80ae659dd97031b8887d355d70afae57674d3cd0dd955b4b9b57d925d5. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/KRA382000120.
Find Me In Your Memory (Original Television Soundtrack) Pt. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f378b772ff9ac5d1f905d7fc741596d3596fe5046d00d1fc0a160a8d14802eb. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:36:23Z), 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/QZEKE1928633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3baa156cc5384a4ae344df5d44143645c2d4c52cd744ba3eacf1a566617c48ec. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/KRA252301224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb255a01df179752633affae3c07c95bf42b1c464a1ea8203e40702a3bb11800. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/KRA252301438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218e6aed84cbcf39f7dbacca36d33500cab9151ca7394b4100aea234e6d35c7b. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:49:23Z), 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/KRA252301566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3283b565b3ec85e0d7b1ec4a4d198f085785601f775e1120aed81d808f7927a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/KRA252400170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6dc1377dc52268e8378df61c3c9f1a4cd28f7b55d4abf750c1b569425f745fe. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/KRA252400171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db7afcc5da70072036040241d484acd653392bc3d0d676904ec231a32c69655. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/KRA252301304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8216ae61a0e9e3ba13244fc18346276bd4443e91a03089474df1cba1ef8ba7cb. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/KRA252400173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3baa156cc5384a4ae344df5d44143645c2d4c52cd744ba3eacf1a566617c48ec. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/KRA252301224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7bbb28f7d1b2d2d1856e51f557de672ef7e3d79827f7609968a3b958e42ad3. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/KRA252400174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218e6aed84cbcf39f7dbacca36d33500cab9151ca7394b4100aea234e6d35c7b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/KRA252301566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514854a5a51ec00219f5f8f7f4bbdc7bb976f2ed26c374161bd517b0aef339b1. 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/KRA252400175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaddf76fb4d27cd69b399db9252935948c74a66c23ef020279e38539372f40b5c. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:35:07Z), 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/KRA252400176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e20af285bdae7c397e1c4115111f4a88f34213ecc7c9cbbb0d5696eeedec339. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/KRA252400177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf466f2a19411476eb91f49b3346ccc4090aa685050bbb0dbcf29710c78d1dc12. 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/KRB141900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e0ff05688c9ff99eeceee115d30f98d55865b78ca2cb52e28987f19e28817e. 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/KRA381701834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c3434e2b926468e9c3358afc733b1ec3194d4703b2552558327b3ff4558614. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/KRA341654479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d9ce57555618ad6df06afb42e02b979b45d457a42ee5709cf3b3e38d5c68bd. 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/KRA491900159.