Hwang Yoon-seok (, born January 17, 1982), better known as Hwanhee (), is a South Korean singer, actor and a member of South Korean R&B duo Fly to the Sky. Career Hwanhee graduated from before his d
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 0x63a9df756774c3c1368ee8548e382e48e686aaf1b5d3d3c515e76ca96bccd1fb. 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/ee978074-faec-4301-903d-653dd235fbdc.json and https://artists.proofprofile.net/proofs/artist/ee978074-faec-4301-903d-653dd235fbdc.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 0x0a7f62acb07d253649c43b3cfce6b3bbe5cd46bed6520cb4e5a58174ab72d6c1. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZF452006543.
빠담빠담 (Original Television Soundtrack) Pt. 3
Padam Padam (Original Television Soundtrack) Pt. 3
빠담빠담 (Original Television Soundtrack) Part. 3
Pretty Boy (Original Television Soundtrack), Pt. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4010d7a29209b393c39fd9438a225f363d508a82784eb9528fca67da1e38ead9. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/KRA381210497.
The Emperor : Owner of the Mask OST Part.9 (Soundtrack)
The Emperor: Owner of the Mask (MBC Drama) OST Part.9
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b02927fe9e4832ba36cccfca3ed28ec0ccb966b2a8be7a39246a340d0ff2a23. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:45:03Z), 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/KRA381705370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3338bd579957bbd03b0d9ac72e217f32befc89b96963b0467b61355e39b851ab. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/KRMIM2032125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e20665bc26f1f4763e5b35fafe0f2a7c0b7d873490879401bfa0ab58d91b91. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/KRA382160839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af1615056a1829ab19ec2d19e1dfdd611789f107c86b4a4a84717778c6abf47. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:50:33Z), 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/KRMIM2201384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8161f732353211762c3d7e3cdfff1b25087725af08b566720e5d73835b3eb6. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/KRB472300359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfffde6a620bd18d7b7ddd42b039a994063d2da3ef0e99a990eed8769e815f993. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:58:51Z), 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/KRB472403137.
Mis ma, the goddess of revenge OST Part.3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2dbc1a69f95a8a4fffbe328e770204b06d40b43b0a40dee2c4ec4f07b6a013. 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/KRA382324174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fcb359c88767b39d780c9a0e247d0ec1c1fdbbbc66bd8effe68267364607029. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/KRA491800497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8606fb5a4d83d461807a22438bb701bd8ddf86447329c42a36522c8694aa5f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/KRA491800602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22484b4e83626f9575a689a708deda72406f408cb7be8da46662e57a5bd4dedc. 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/KRA491700237.
Over the Rainbow (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31f23d0bc136e3dcd65a4f2727c76938195b0893382172a11901df6bade6808. 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/QZEKE1843497.
오버 더 레인보우 (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0f4a9e50317455dcff7b754e82d521539d13e7b03e4f9ec2195ce32102279c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZF452025423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222a2666a463b7a6247d75f2fada2fae8a95aacadc4207e3dff2692171b19938. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/KRC211600061.
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
I'll forget it... (Outro) (With Hwanhee)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6280bc604729ccb0b9abe0958744e8215e260ab8574eeeeb8157c92938519575. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/KRA381201042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9addf37a1bdd1d4431b3fccf1a1b6c5e9733734d28d6a76403c2e160286b0dad. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZEKE1843513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9032d4545143f3538a193caacfa95a610f5c12970a42dc1716a0fdaa25d17b28. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZEKE1843514.