川田瑠夏
type: MusicGroup
popularity: 10
followers: 841
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcdf8c4736c421acd8c14c0f6d1d193985932e19275013e099781b25eb081ee13
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/700e3cf0-a2c4-4501-a085-2ac8d45e5e1d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/700e3cf0-a2c4-4501-a085-2ac8d45e5e1d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/700e3cf0-a2c4-4501-a085-2ac8d45e5e1d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcdf8c4736c421acd8c14c0f6d1d193985932e19275013e099781b25eb081ee13","name":"川田瑠夏","registered_at":"2026-06-17T05:03:13Z","symbol":"NIM1289437","token_address":"0xe4dfdd48b5714605cf7211c59339024a5329e041","type":"artist","uuid":"700e3cf0-a2c4-4501-a085-2ac8d45e5e1d"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf8c4736c421acd8c14c0f6d1d193985932e19275013e099781b25eb081ee13. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/700e3cf0-a2c4-4501-a085-2ac8d45e5e1d.json and https://artists.proofprofile.net/proofs/artist/700e3cf0-a2c4-4501-a085-2ac8d45e5e1d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xcdf8c4736c421acd8c14c0f6d1d193985932e19275013e099781b25eb081ee13","name":"川田瑠夏","registered_at":"2026-06-17T05:03:13Z","symbol":"NIM1289437","token_address":"0xe4dfdd48b5714605cf7211c59339024a5329e041","type":"artist","uuid":"700e3cf0-a2c4-4501-a085-2ac8d45e5e1d"}
album: 「きんいろモザイク」サウンドブック はじめまして よろしくね。
  type: MusicAlbum
  date published: 2013-08-21
album: 「きんいろモザイク」サウンドブック いつまでも一緒だよ。
  type: MusicAlbum
  date published: 2013-10-09
album: ご注文はうさぎですか? (ORIGINAL SOUNDTRACK)
  type: MusicAlbum
  date published: 2014-12-25
album: 「ハロー!!きんいろモザイク」サウンドブック「また、会えたね。」
  type: MusicAlbum
  date published: 2015-06-17
album: ご注文はうさぎですか？？ (ORIGINAL SOUNDTRACK)
  type: MusicAlbum
  date published: 2015-12-25
album: TVアニメ『ミュークルドリーミー』 オリジナルサウンドトラック くるくる♪みゅーじっくこれくしょん -１-
  type: MusicAlbum
  date published: 2017
album: ご注文はうさぎですか? (BLOOM ORIGINAL SOUNDTRACK)
  type: MusicAlbum
  date published: 2020-12-25
album: TVアニメ「ミュークルドリーミー みっくす！」オリジナルサウンドトラック くるくるみゅーじっくこれくしょん -みっくす-【mini】
  type: MusicAlbum
  date published: 2021-07-15
album: TVアニメ『氷属性男子とクールな同僚女子』Original Sound Track
  type: MusicAlbum
  date published: 2023-03-15
  track: FROZEN MIDNIGHT (TV Size)
    type: MusicRecording
    duration: PT1M30S
    duration ms: 90987
    explicit: false
    by artist: 川田瑠夏
    in album: TVアニメ『氷属性男子とクールな同僚女子』Original Sound Track
      type: MusicAlbum
      date published: 2023-03-15
    isrc code: JPI102300093
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-12T00:26:04+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xf7b9d0a77e1e63ea97dfbf4e9941d7589896359f35676f806c762f4dfccc2411
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957640
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957640
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI102300093
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-12T02:27:45Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b9d0a77e1e63ea97dfbf4e9941d7589896359f35676f806c762f4dfccc2411. Chain 2 (Bitcoin): anchored in block 957640 (2026-07-12T02:27:45Z), 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/JPI102300093.
      date published: 2026-07-12T02:27:45Z
    audio: FROZEN MIDNIGHT (TV Size)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 77.539
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.75
      additional property: Energy
        type: PropertyValue
        value: 0.383
      additional property: Speechiness
        type: PropertyValue
        value: 0.061
      additional property: Acousticness
        type: PropertyValue
        value: 0.728
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.014
      additional property: Liveness
        type: PropertyValue
        value: 0.098
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.547
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.174
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: リナリア (TV Size)
    type: MusicRecording
    duration: PT1M31S
    duration ms: 91587
    explicit: false
    by artist: 川田瑠夏
    in album: TVアニメ『氷属性男子とクールな同僚女子』Original Sound Track
      type: MusicAlbum
      date published: 2023-03-15
    isrc code: JPI102300128
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T13:10:49+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xae80d49e3bce57d70445c40c9ec4eeb08bfebbb6457dec229d4504c03dde56a8
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958897
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958897
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI102300128
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T16:07:57Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae80d49e3bce57d70445c40c9ec4eeb08bfebbb6457dec229d4504c03dde56a8. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:07:57Z), 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/JPI102300128.
      date published: 2026-07-20T16:07:57Z
    audio: リナリア (TV Size)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 129.999
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
      additional property: Energy
      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: アニメ『村井の恋』オリジナル・サウンドトラック
album: Animation "Murai in love" original soundtrack

Danceability
type: PropertyValue
value: 0.759

Energy
type: PropertyValue
value: 0.496

Speechiness
type: PropertyValue
value: 0.028

Acousticness
type: PropertyValue
value: 0.241

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.316

Valence (Positivity)
type: PropertyValue
value: 0.918

Loudness (dB)
type: PropertyValue
value: -6.049

Key Name
type: PropertyValue
value: F

Mode Name
type: PropertyValue
value: Major

アニメ『村井の恋』オリジナル・サウンドトラック
type: MusicAlbum
date published: 2024-10-07

Animation "Murai in love" original soundtrack
type: MusicAlbum
date published: 2024-10-07