Ryu Si-won
type: MusicGroup
genre: kayokyoku
description: Ryu Si-won (; born 6 October 1972) is a South Korean actor and singer. After he made his debut in the KBS drama Feeling in 1994, Ryu pursued a singing career. Early life Ryu was born in Andong, North
popularity: 12
followers: 3665
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSVerifyInstructions
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  value: 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
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c08edcca5551de25e589a81e13927a74c7cc5f56b48f6a69381e6e6d92af3d. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/62d6b62e-b539-4036-abac-7489c3a04ad7.json and https://artists.proofprofile.net/proofs/artist/62d6b62e-b539-4036-abac-7489c3a04ad7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T21:49:28Z
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album: Change
  type: MusicAlbum
  date published: 1995-10-01
album: Dream
  type: MusicAlbum
  date published: 1999-10-01
album: 몽
  type: MusicAlbum
  date published: 1999-10-01
album: Siwon's Racing Diary Season 3 (류시원의 레이싱 다이어리 시즌 3)
  type: MusicAlbum
  date published: 2008-09-04
album: Siwon's Racing Diary Season 4 (류시원의 레이싱 다이어리 시즌 4)
  type: MusicAlbum
  date published: 2009-08-20
album: Siwon's Racing Diary Season 5 (류시원의 레이싱 다이어리 시즌 5)
  type: MusicAlbum
  date published: 2010-06-07
album: 愛したい 君を 愛したい
  type: MusicAlbum
  date published: 2011-03-16
album: 願い星
  type: MusicAlbum
  date published: 2011-09-07
album: どんな時も
  type: MusicAlbum
  date published: 2011-10-05
album: Harmony (Ryu Siwon Birthday Party)
  type: MusicAlbum
  date published: 2011-11-10
album: Siwon's Racing Diary Season 6 (류시원의 레이싱 다이어리 시즌 6)
  type: MusicAlbum
  date published: 2011-11-10
album: Siwon's Racing Diary Season 7 (류시원의 레이싱 다이어리 시즌 7)
  type: MusicAlbum
  date published: 2012-07-11
album: Season
  type: MusicAlbum
  date published: 2012-11-21
  track: 24時間の神話
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    duration ms: 297386
    explicit: false
    by artist: Ryu Si-won
    in album: Season
      type: MusicAlbum
      date published: 2012-11-21
    genre: kayokyoku
    isrc code: JPB601247707
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      value: 2026-07-17T23:29:18+00:00
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    additional property: OTSTimestamp
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      value: 2026-07-18T00:04:42Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82a41eee9b6f97d018d77f1261195703db57e959afd90e9131005c9410ed67f. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/JPB601247707.
      date published: 2026-07-18T00:04:42Z
    audio: 24時間の神話
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 95.982
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.565
      additional property: Energy
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      additional property: Speechiness
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        value: 0.026
      additional property: Acousticness
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        value: 0.684
      additional property: Instrumentalness
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        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.117
      additional property: Valence (Positivity)
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      additional property: Loudness (dB)
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        value: -6.614
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: GLORY
  type: MusicAlbum
  date published: 2014-01-08
album: PODIUM - Siwon's Racing Diary Season 9
  type: MusicAlbum
  date published: 2014-05-28
album: AGAIN
  type: MusicAlbum
  date published: 2015-10-06
album: WISH
  type: MusicAlbum
  date published: 2016-10-05
  track: 最後の言い訳
    type: MusicRecording
    duration: PT6M3S
    duration ms: 363133
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    by artist: Ryu Si-won
    in album: WISH
      type: MusicAlbum
      date published: 2016-10-05
    genre: kayokyoku
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    additional property: OTSBitcoinBlockVerifyURL
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    additional property: OTSTimestamp
    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
    audio: 最後の言い訳
album: Ryu Siwon 20th ANNIVERSARY COLLECTION～いつも春～
album: Ryu Siwon 20th ANNIVERSARY COLLECTION～いつも春～ (Copy)

OTSBitcoinBlockVerifyURL
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value: https://blockstream.info/api/block-height/959031

OTSVerificationAPI
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value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPO01620136

OTSTimestamp
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value: 2026-07-21T16:15:11Z

OTSVerifyInstructions
type: PropertyValue
value: 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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cede664c86d30ac3b5ebafe695eb01c172f20fa841af1f7d66c20892a5275e0. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/JPPO01620136.
date published: 2026-07-21T16:15:11Z

最後の言い訳
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
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additional property: Musical Key
  type: PropertyValue
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additional property: Mode (Major/Minor)
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additional property: Time Signature
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additional property: Danceability
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additional property: Energy
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additional property: Speechiness
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additional property: Acousticness
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additional property: Instrumentalness
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additional property: Liveness
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additional property: Valence (Positivity)
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additional property: Key Name
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additional property: Mode Name
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Ryu Siwon 20th ANNIVERSARY COLLECTION～いつも春～
type: MusicAlbum
date published: 2024-11-20
track: 桜
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  duration: PT4M59S
  duration ms: 299066
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  by artist: Ryu Si-won
  in album: Ryu Siwon 20th ANNIVERSARY COLLECTION～いつも春～
    type: MusicAlbum
    date published: 2024-11-20
  genre: kayokyoku
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f33184adaefe4ebead4d1d17d5735a2d38c1ad992e06dc122d2d092974f7557. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/JPTK00501680.
    date published: 2026-07-19T00:50:09Z
  audio: 桜
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    additional property: Tempo (BPM)
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    additional property: Mode (Major/Minor)
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    additional property: Danceability
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Liveness
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    additional property: Key Name
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Ryu Siwon 20th ANNIVERSARY COLLECTION～いつも春～ (Copy)
type: MusicAlbum
date published: 2024-11-20

Ryu Siwon 20th ANNIVERSARY COLLECTION～いつも春～
type: MusicAlbum
date published: 2024-11-20