Sunmyu
type: MusicGroup
description: was a Japanese idol girl group. The group had two singles reach the top ten on the weekly Oricon Singles Chart, with being their best-charting single, reaching the fifth place on the chart. Sunmy
popularity: 2
followers: 1046
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-19T03:22:39Z
album: くちびるNetwork
  type: MusicAlbum
  date published: 2013-01-23
album: 夏祭り(通常盤)
  type: MusicAlbum
  date published: 2013-07-03
album: これが愛なんだ(初回盤C)
  type: MusicAlbum
  date published: 2013-11-20
album: 春が来て僕たちはまた少し大人になる(通常盤)
  type: MusicAlbum
  date published: 2014-03-19
album: 純情マーメイド(初回盤B)
  type: MusicAlbum
  date published: 2014-07-02
album: 未来地図(通常盤)
  type: MusicAlbum
  date published: 2014-08-06
album: 初雪のシンフォニー~TYPE-D~
  type: MusicAlbum
  date published: 2014-11-19
album: 初雪のシンフォニー~TYPE-C~
  type: MusicAlbum
  date published: 2014-11-19
album: 初雪のシンフォニー~TYPE-B~
  type: MusicAlbum
  date published: 2014-11-19
album: はじまりのメロディ~TYPE-B~
  type: MusicAlbum
  date published: 2015-03-18
album: はじまりのメロディ~通常盤~
  type: MusicAlbum
  date published: 2015-03-18
album: トゲトゲ ～通常盤～
  type: MusicAlbum
  date published: 2015-10-07
album: 桜色プロミス/風のミラージュ
  type: MusicAlbum
  date published: 2017-03-15
album: Hatsuyuki no Symphony (Standard Edition)
  type: MusicAlbum
  date published: 2017-11-01
album: Hajimari no Melody (Standard Edition)
  type: MusicAlbum
  date published: 2017-11-01
album: Hatsuyuki no Symphony (Type-C)
  type: MusicAlbum
  date published: 2017-11-01
album: Kuchibiru Network (Standard Edition)
  type: MusicAlbum
  date published: 2017-11-01
album: Hatsuyuki no Symphony (Type-C)
  type: MusicAlbum
  date published: 2017-11-01
album: Hoho ni Kiss Shite (Standard Edition)
  type: MusicAlbum
  date published: 2017-11-01
album: Toge Toge (Type-B)
  type: MusicAlbum
  date published: 2017-11-01
album: Kore ga Ai Nanda (Standard Edition)
  type: MusicAlbum
  date published: 2017-11-01
album: Hajimari no Melody (Type-C)
  type: MusicAlbum
  date published: 2017-11-01
album: Natsumatsuri (Standard Edition)
  type: MusicAlbum
  date published: 2017-11-01
  track: Natsumatsuri
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    duration: PT3M55S
    duration ms: 235040
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    by artist: Sunmyu
    in album: Natsumatsuri (Standard Edition)
      type: MusicAlbum
      date published: 2017-11-01
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    additional property: OTSVerifyInstructions
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      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
    subject of: OpenTimestamps Proof of Existence
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155eb611ae42c529cfe818623ed578939150cc5c7d971e189f620092da7f6d90. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPPC01301117.
      date published: 2026-07-04T14:03:39Z
    audio: Natsumatsuri
      type: AudioObject
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album: 真夏のFantasy
  type: MusicAlbum
  date published: 2018-08-08
album: つないだあなたのてのひら
  type: MusicAlbum
  date published: 2019-05-15
album: Special Day/SYNCHROMANCE
  type: MusicAlbum
  date published: 2019-05-15
album: 羽ばたいてファンタジー
  type: MusicAlbum
  date published: 2020-04-08