Uru
type: MusicGroup
genre: anime
genre: j-pop
description: Uru or URU may refer to: Language Uru dialect of Central Kilimanjaro, a Bantu language of Tanzania Uru language, the extinct language of the Uros, an Amerindian people Urumi language, an extinct
popularity: 62
followers: 1060095
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSProofURL
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
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 0x351466fb1fcff954e2fc11de2168091ce0d83ffe130cd277b52b9eb2650c4610. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4e76b7a8-7747-42b0-a035-fd3650938012.json and https://artists.proofprofile.net/proofs/artist/4e76b7a8-7747-42b0-a035-fd3650938012.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
album: 星の中の君
  type: MusicAlbum
  date published: 2016-05-16
album: 星の中の君
  type: MusicAlbum
  date published: 2016-06-15
album: 星の中の君
  type: MusicAlbum
  date published: 2016-06-15
album: Hoshino Nakano Kimi - EP
  type: MusicAlbum
  date published: 2016-07-15
album: The last rain
  type: MusicAlbum
  date published: 2016-09-21
album: The last rain
  type: MusicAlbum
  date published: 2016-10-26
album: The last rain
  type: MusicAlbum
  date published: 2016-10-26
album: The Last Rain - EP
  type: MusicAlbum
  date published: 2016-10-28
album: フリージア
  type: MusicAlbum
  date published: 2017-02-08
album: フリージア
  type: MusicAlbum
  date published: 2017-02-15
album: フリージア
  type: MusicAlbum
  date published: 2017-02-15
album: Freesia
  type: MusicAlbum
  date published: 2017-02-17
album: Shiawase No Uta - EP
  type: MusicAlbum
  date published: 2017-06-07
album: しあわせの詩
  type: MusicAlbum
  date published: 2017-06-07
album: しあわせの詩
  type: MusicAlbum
  date published: 2017-06-07
album: 奇蹟
  type: MusicAlbum
  date published: 2017-10-11
album: Kiseki
  type: MusicAlbum
  date published: 2017-11-08
album: 奇蹟
  type: MusicAlbum
  date published: 2017-11-08
album: 奇蹟
  type: MusicAlbum
  date published: 2017-11-08
album: モノクローム (Special Edition)
  type: MusicAlbum
  date published: 2017-12-20
album: モノクローム(Cover Complete Edition)
  type: MusicAlbum
  date published: 2017-12-20
album: Monochrome
  type: MusicAlbum
  date published: 2017-12-20
album: モノクローム (Special Edition)
  type: MusicAlbum
  date published: 2017-12-20
album: Orion Blue (Special Edition)
  type: MusicAlbum
  date published: 2018
album: remember
  type: MusicAlbum
  date published: 2018-09-26
album: remember
  type: MusicAlbum
  date published: 2018-09-26
album: Prologue
  type: MusicAlbum
  date published: 2018-09-26
album: Remember
  type: MusicAlbum
  date published: 2018-10-30
album: プロローグ
  type: MusicAlbum
  date published: 2018-11-29
album: プロローグ
  type: MusicAlbum
  date published: 2018-12-05
album: プロローグ
  type: MusicAlbum
  date published: 2018-12-05
album: 願い
  type: MusicAlbum
  date published: 2019-09-11
album: Negai
  type: MusicAlbum
  date published: 2019-09-11
album: 願い
  type: MusicAlbum
  date published: 2019-09-11
album: あなたがいることで
  type: MusicAlbum
  date published: 2020-02-09
album: あなたがいることで
  type: MusicAlbum
  date published: 2020-02-09
album: オリオンブルー (Special Edition)
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  date published: 2020-03-18
album: オリオンブルー (Special Edition)
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      date published: 2020-03-18
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    genre: j-pop
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    additional property: OTSTimestamp
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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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      date published: 2026-06-13T12:47:07Z
    audio: プロローグ
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      additional property: Valence (Positivity)
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  track: あなたがいることで
album: オリオンブルー(Cover Complete Edition)
album: Break
album: Break／振り子
album: ファーストラヴ
album: Love Song
album: それを愛と呼ぶなら
album: そばにいるよ
album: 恋
album: コントラスト(Special Edition)
album: コントラスト(Cover Complete Edition)
album: 紙一重
album: 心得
album: 心得 / 紙一重
album: 振り子 - From THE FIRST TAKE
album: それを愛と呼ぶなら - From THE FIRST TAKE
album: 「君の幸せを」
album: アンビバレント
album: 奏（かなで）
album: 春 ～Destiny～
album: フィラメント
album: Never ends
album: 手紙
album: Never ends / 手紙
album: プラットフォーム

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Time Signature
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Danceability
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Energy
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Speechiness
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Instrumentalness
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Liveness
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Valence (Positivity)
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Key Name
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あなたがいることで
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duration: PT5M16S
duration ms: 316453
explicit: false
by artist: Uru
in album: オリオンブルー (Special Edition)
  type: MusicAlbum
  date published: 2020-03-18
genre: anime
genre: j-pop
isrc code: JPU902000080
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSVerificationAPI
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43894a42240bf19bc9a3203926a8d7d49388a3d6ce5537ac51ecb9c47dfd2d54. 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/JPU902000080.
  date published: 2026-06-13T12:47:07Z
audio: あなたがいることで
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  additional property: Energy
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  additional property: Acousticness
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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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オリオンブルー(Cover Complete Edition)
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date published: 2020-03-18
track: プロローグ
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    type: MusicAlbum
    date published: 2020-03-18
  genre: anime
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  additional property: OTSVerificationAPI
    type: PropertyValue
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  additional property: OTSTimestamp
    type: PropertyValue
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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
  subject of: OpenTimestamps Proof of Existence
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    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093fdd3778f30a511b29dd7a9fbdbe5e099fef8a512bc91691101539fb788e68. 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/JPU901803358.
    date published: 2026-06-13T17:25:41Z
  audio: プロローグ
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    additional property: Mode (Major/Minor)
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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: Instrumentalness
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track: あなたがいることで
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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
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-06-13T13:32:09Z
  audio: あなたがいることで
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    additional property: Danceability
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    additional property: Speechiness
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    additional property: Acousticness
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track: 若者のすべて
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    date published: 2020-03-18
  genre: anime
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  additional property: OTSBitcoinBlockVerifyURL
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  subject of: OpenTimestamps Proof of Existence
  audio: 若者のすべて

OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
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OTSTimestamp
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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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d20f3f0e6a8f1c8c23ed2a1452464412ddb870d469ec38f1f04728e099878ed. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPU902000247.
date published: 2026-07-02T03:30:09Z

若者のすべて
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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: Loudness (dB)
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Break
type: MusicAlbum
date published: 2020-10-10

Break／振り子
type: MusicAlbum
date published: 2020-10-28

ファーストラヴ
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date published: 2021-02-08
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  duration ms: 324213
  explicit: false
  by artist: Uru
  in album: ファーストラヴ
    type: MusicAlbum
    date published: 2021-02-08
  genre: anime
  genre: j-pop
  isrc code: JPU902003616
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-12T09:09:11+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x5cd8e7689cef0168cd5b062b3db3852d717eda90d7518eb70c9844f6facfd4d2
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957684
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957684
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU902003616
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-12T09:22:41Z
  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 0x5cd8e7689cef0168cd5b062b3db3852d717eda90d7518eb70c9844f6facfd4d2. Chain 2 (Bitcoin): anchored in block 957684 (2026-07-12T09:22:41Z), 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/JPU902003616.
    date published: 2026-07-12T09:22:41Z
  audio: Break - Self-cover version
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 73.218
    additional property: Musical Key
      type: PropertyValue
      value: 8
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.396
    additional property: Energy
      type: PropertyValue
      value: 0.236
    additional property: Speechiness
      type: PropertyValue
      value: 0.054
    additional property: Acousticness
      type: PropertyValue
      value: 0.975
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.363
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.344
    additional property: Loudness (dB)
      type: PropertyValue
      value: -8.792
    additional property: Key Name
      type: PropertyValue
      value: Ab
    additional property: Mode Name
      type: PropertyValue
      value: Minor

Love Song
type: MusicAlbum
date published: 2021-08-05

Love Song
type: MusicAlbum
date published: 2021-08-25

それを愛と呼ぶなら
type: MusicAlbum
date published: 2022-04-24

それを愛と呼ぶなら
type: MusicAlbum
date published: 2022-05-30

そばにいるよ
type: MusicAlbum
date published: 2022-11-04

恋
type: MusicAlbum
date published: 2023-01-23

コントラスト(Special Edition)
type: MusicAlbum
date published: 2023-01-30

コントラスト(Cover Complete Edition)
type: MusicAlbum
date published: 2023-02-01
track: ランドマーク
  type: MusicRecording
  duration: PT3M57S
  duration ms: 237640
  explicit: false
  by artist: Uru
  in album: コントラスト(Cover Complete Edition)
    type: MusicAlbum
    date published: 2023-02-01
  genre: anime
  genre: j-pop
  isrc code: JPU902205213
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-02T21:14:49+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xbc86ab23078203f82773be0c898714a93903d251241f2c7213e6e29e7db1a3bd
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956404
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956404
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU902205213
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-17T04:04:23Z
  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 0xbc86ab23078203f82773be0c898714a93903d251241f2c7213e6e29e7db1a3bd. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:04:23Z), 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/JPU902205213.
    date published: 2026-07-17T04:04:23Z
  audio: ランドマーク
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 167.886
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.483
    additional property: Energy
      type: PropertyValue
      value: 0.664
    additional property: Speechiness
      type: PropertyValue
      value: 0.032
    additional property: Acousticness
      type: PropertyValue
      value: 0.345
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.091
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.495
    additional property: Loudness (dB)
      type: PropertyValue
      value: -4.104
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: ポジティ部入部
  type: MusicRecording
  duration: PT4M20S
  duration ms: 260959
  explicit: false
  by artist: Uru
  in album: コントラスト(Cover Complete Edition)
    type: MusicAlbum
    date published: 2023-02-01
  genre: anime
  genre: j-pop
  isrc code: JPU902205214
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-12T20:14:56+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x3c263744f24bc473f193fc205c88f1200d6696f5b90f84da73d3dbad6e5cdca0
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957754
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957754
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU902205214
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-12T21:26:22Z
  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 0x3c263744f24bc473f193fc205c88f1200d6696f5b90f84da73d3dbad6e5cdca0. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/JPU902205214.
    date published: 2026-07-12T21:26:22Z
  audio: ポジティ部入部
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 99.94
    additional property: Musical Key
      type: PropertyValue
      value: 4
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.506
    additional property: Energy
      type: PropertyValue
      value: 0.659
    additional property: Speechiness
      type: PropertyValue
      value: 0.029
    additional property: Acousticness
      type: PropertyValue
      value: 0.291
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.181
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.366
    additional property: Loudness (dB)
      type: PropertyValue
      value: -3.956
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: ファーストラヴ
  type: MusicRecording
  duration: PT5M1S
  duration ms: 301693
  explicit: false
  by artist: Uru
  in album: コントラスト(Cover Complete Edition)
    type: MusicAlbum
    date published: 2023-02-01
  genre: anime
  genre: j-pop
  isrc code: JPU902003613
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-12T20:08:00+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x42a1bfec379099b70a5ff9687adb88a875b839a3109928565a0068ebe4f02067
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957750
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: ファーストラヴ
track: 振り子

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/957750

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU902003613

OTSTimestamp
type: PropertyValue
value: 2026-07-12T20:39:38Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a1bfec379099b70a5ff9687adb88a875b839a3109928565a0068ebe4f02067. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/JPU902003613.
date published: 2026-07-12T20:39:38Z

ファーストラヴ
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 74.066
additional property: Musical Key
  type: PropertyValue
  value: 9
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.456
additional property: Energy
  type: PropertyValue
  value: 0.442
additional property: Speechiness
  type: PropertyValue
  value: 0.032
additional property: Acousticness
  type: PropertyValue
  value: 0.837
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.156
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.192
additional property: Loudness (dB)
  type: PropertyValue
  value: -5.119
additional property: Key Name
  type: PropertyValue
  value: A
additional property: Mode Name
  type: PropertyValue
  value: Major

振り子
type: MusicRecording
duration: PT3M58S
duration ms: 238093
explicit: false
by artist: Uru
in album: コントラスト(Cover Complete Edition)
  type: MusicAlbum
  date published: 2023-02-01
genre: anime
genre: j-pop
isrc code: JPU902002250
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-02T21:13:57+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x271ac091663f05bcd1e06161a32703ab19bed4cfdf57e5d37c4626d007cb037d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956404
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956404
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU902002250
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T22:12:38Z
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 0x271ac091663f05bcd1e06161a32703ab19bed4cfdf57e5d37c4626d007cb037d. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-02T22:12:38Z), 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/JPU902002250.
  date published: 2026-07-02T22:12:38Z
audio: 振り子
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 141.774
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.443
  additional property: Energy
    type: PropertyValue
    value: 0.298
  additional property: Speechiness
    type: PropertyValue
    value: 0.036
  additional property: Acousticness
    type: PropertyValue
    value: 0.921
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.112
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.209
  additional property: Loudness (dB)
    type: PropertyValue
    value: -7.371
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

紙一重
type: MusicAlbum
date published: 2023-04-15

心得
type: MusicAlbum
date published: 2023-05-01

心得 / 紙一重
type: MusicAlbum
date published: 2023-06-07
track: それを愛と呼ぶなら - From THE FIRST TAKE
  type: MusicRecording
  duration: PT4M56S
  duration ms: 296946
  explicit: false
  by artist: Uru
  in album: 心得 / 紙一重
    type: MusicAlbum
    date published: 2023-06-07
  genre: anime
  genre: j-pop
  isrc code: JPU902300460
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-12T20:12:22+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x438fd538af16b2b24c7a9910c6b5b80c864969011d101d3835b38cf2b9fd492d
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957750
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957750
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU902300460
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-12T20:39:38Z
  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 0x438fd538af16b2b24c7a9910c6b5b80c864969011d101d3835b38cf2b9fd492d. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/JPU902300460.
    date published: 2026-07-12T20:39:38Z
  audio: それを愛と呼ぶなら - From THE FIRST TAKE
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 165.316
    additional property: Musical Key
      type: PropertyValue
      value: 10
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.524
    additional property: Energy
      type: PropertyValue
      value: 0.307
    additional property: Speechiness
      type: PropertyValue
      value: 0.038
    additional property: Acousticness
      type: PropertyValue
      value: 0.94
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.132
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.552
    additional property: Loudness (dB)
      type: PropertyValue
      value: -7.911
    additional property: Key Name
      type: PropertyValue
      value: Bb
    additional property: Mode Name
      type: PropertyValue
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振り子 - From THE FIRST TAKE
type: MusicAlbum
date published: 2023-06-07

それを愛と呼ぶなら - From THE FIRST TAKE
type: MusicAlbum
date published: 2023-06-07

「君の幸せを」
type: MusicAlbum
date published: 2023-11-22

アンビバレント
type: MusicAlbum
date published: 2024-01-20

アンビバレント
type: MusicAlbum
date published: 2024-02-14
track: 「君の幸せを」
  type: MusicRecording
  duration: PT4M54S
  duration ms: 294080
  explicit: false
  by artist: Uru
  in album: アンビバレント
    type: MusicAlbum
    date published: 2024-02-14
  genre: anime
  genre: j-pop
  isrc code: JPU902304443
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x329ae48f4054632727a88ea867427df51a9db7f40de4d5a611dd91150f92bd7a
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956404
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956404
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU902304443
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-17T04:07:12Z
  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 0x329ae48f4054632727a88ea867427df51a9db7f40de4d5a611dd91150f92bd7a. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:07:12Z), 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/JPU902304443.
    date published: 2026-07-17T04:07:12Z
  audio: 「君の幸せを」
    type: AudioObject
    additional property: Tempo (BPM)
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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
      type: PropertyValue
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奏（かなで）
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date published: 2024-05-29

春 ～Destiny～
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date published: 2025-03-18

フィラメント
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date published: 2025-04-04

Never ends
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date published: 2025-07-11

手紙
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date published: 2025-08-13

Never ends / 手紙
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date published: 2025-08-27

プラットフォーム
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date published: 2025-10-15

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