Ko Younha (; born April 29, 1988), known mononymously as Younha, is a South Korean singer-songwriter and record producer. She began her career in 2004 in Japan, where she was nicknamed the "Oricon Com
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 0x750538eb1b37b278a18cc4941b80a603f30c855ae4f61448ac2361772ecc29db. 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/97a74cd6-be10-4d48-bd7f-9c7dfcd09dfb.json and https://artists.proofprofile.net/proofs/artist/97a74cd6-be10-4d48-bd7f-9c7dfcd09dfb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
YOUNHA 6th Album Repackage 'END THEORY : Final Edition'
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 0x30c83895e94e5aa2f595884e55f5411fab90b673deecd2db37dfbceb641cc8ed. 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/KRA382204244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde07d264a9082887bca23b5b8713621141e899df078c51236e99f6b26e69cdbc. 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/KRA381903467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd783c4260ee0b822aff0c1278ebb6a337d3f1b14ad6c002448e49794e28b71. 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/KRA381905455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82faa9925ca4d0083970d9f79d7a7bc181aa15faa274fbcfa04ad15c3d7da26. 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/KRA381905456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c202fdfe90c6827f1e7ded13b629c4ad5d789f02adc01475707185ac89aaa4. 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/KRA381905457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e205240d144d249c32a378c91a35d429865db7ca60f4f4c40bf9610295050bc. 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/KRA381905458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa506e4b02657bdf1da0c1bbea9066cd02b64c3e03b44525f2c31633a3f73bae1. 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/KRA381905459.
Cinderella & Four Knights, Pt. 5 (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836be9e2324f142b30667b7f70c4b2c89369f6b8ade8441efb2e98501117be4c. 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/KRA251601752.
Who Are You: School 2015 (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0fbb88bbfa3475447542ab35376c6f8f03ff87a99463f89e0f907306b7c13e. 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/KRA491500475.
It's sunny all day in Seoul today (Vocal YOUNHA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2957945a57591dc2e80e0c8a3887719569ea7dddea0aa654d600a08c22269a. 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/KRA382204964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9aa68b3e89f62467f9d25766e6601104d2c4c30519d3651213dce23245b695. 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/JPES00500401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e105a2de067f3dd0e4890c01df51d155077e3f8d8517fb7fd8370cc0491613. 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/KRB472200075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf978f5a0320673e8580bf7f7f181d1a3843871993f76c4dc4d575bb3299618d0. 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/KRA401400124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51cca282d17c4d036517a63d0a977754317d1a776775a1f21c2272de27d92a59. 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/KRA490800202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8021a17f23002859b7890ecfbe9c6259529b5f379f8356dc035d37a49b83c1e6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/KRA491400919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0b6ed52090517401f06e1b39a72c0d788a53e16278a59abfb437596001a664. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/QZEKE1910673.
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