相坂優歌
type: MusicGroup
genre: anime
popularity: 14
followers: 2575
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x996d3784a314820ee2e8ebc53f2329ec0ab742dc088e701b0ce109d8c3d02c22
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953807
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953807
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e7b22872-b61f-42b6-b84c-818bd5961b91.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e7b22872-b61f-42b6-b84c-818bd5961b91.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e7b22872-b61f-42b6-b84c-818bd5961b91
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T16:39:18Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x996d3784a314820ee2e8ebc53f2329ec0ab742dc088e701b0ce109d8c3d02c22","name":"相坂優歌","registered_at":"2026-06-15T04:53:34Z","symbol":"NIM0688103","token_address":"0xf2f444eaf48c2718dbdd887355b3c91b7dd3e200","type":"artist","uuid":"e7b22872-b61f-42b6-b84c-818bd5961b91"}
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 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 0x996d3784a314820ee2e8ebc53f2329ec0ab742dc088e701b0ce109d8c3d02c22. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7b22872-b61f-42b6-b84c-818bd5961b91.json and https://artists.proofprofile.net/proofs/artist/e7b22872-b61f-42b6-b84c-818bd5961b91.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T16:39:18Z
  text: {"copyright_id":"0x996d3784a314820ee2e8ebc53f2329ec0ab742dc088e701b0ce109d8c3d02c22","name":"相坂優歌","registered_at":"2026-06-15T04:53:34Z","symbol":"NIM0688103","token_address":"0xf2f444eaf48c2718dbdd887355b3c91b7dd3e200","type":"artist","uuid":"e7b22872-b61f-42b6-b84c-818bd5961b91"}
album: 透明な夜空
  type: MusicAlbum
  date published: 2016-01-27
album: セルリアンスカッシュ
  type: MusicAlbum
  date published: 2016-08-03
album: ひかり、ひかり
  type: MusicAlbum
  date published: 2017-11-08
  track: ひかり、ひかり
    type: MusicRecording
    duration: PT3M35S
    duration ms: 215666
    explicit: false
    by artist: 相坂優歌
    in album: ひかり、ひかり
      type: MusicAlbum
      date published: 2017-11-08
    genre: anime
    isrc code: JPVI01726950
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T16:46:59+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x266a74eb1f7a5b1785c6723e2ee67d9a67b3d665aafc70a79ad893d213dd2710
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956826
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956826
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI01726950
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T19:27:56Z
    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 0x266a74eb1f7a5b1785c6723e2ee67d9a67b3d665aafc70a79ad893d213dd2710. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPVI01726950.
      date published: 2026-07-05T19:27:56Z
    audio: ひかり、ひかり
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 92.52
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.409
      additional property: Energy
        type: PropertyValue
        value: 0.965
      additional property: Speechiness
        type: PropertyValue
        value: 0.058
      additional property: Acousticness
        type: PropertyValue
        value: 0.005
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.241
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.445
      additional property: Loudness (dB)
        type: PropertyValue
        value: -2.333
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: 屋上の真ん中 で君の心は青く香るまま
  type: MusicAlbum
  date published: 2018-01-31
  track: セルリアンスカッシュ
    type: MusicRecording
    duration: PT4M42S
    duration ms: 282333
    explicit: false
    by artist: 相坂優歌
    in album: 屋上の真ん中 で君の心は青く香るまま
      type: MusicAlbum
      date published: 2018-01-31
    genre: anime
    isrc code: JPVI01614690
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T21:15:25+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xaa951f75b755c589b155f501f63c15b181c12f868c029f4b4f972af9ceed6476
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958935
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958935
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI01614690
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T22:08:19Z
    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 0xaa951f75b755c589b155f501f63c15b181c12f868c029f4b4f972af9ceed6476. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/JPVI01614690.
      date published: 2026-07-20T22:08:19Z
    audio: セルリアンスカッシュ
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 105.932
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.549
      additional property: Energy
        type: PropertyValue
        value: 0.95
      additional property: Speechiness
        type: PropertyValue
        value: 0.115
      additional property: Acousticness
        type: PropertyValue
        value: 0.008
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: ピュリファイ
track: ひかり、ひかり（TV ver.）

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.085

Valence (Positivity)
type: PropertyValue
value: 0.596

Loudness (dB)
type: PropertyValue
value: -4.446

Key Name
type: PropertyValue
value: F#

Mode Name
type: PropertyValue
value: Major

ピュリファイ
type: MusicAlbum
date published: 2025-03-26

ひかり、ひかり（TV ver.）
type: MusicRecording
duration: PT1M32S
duration ms: 92866
explicit: false
by artist: 相坂優歌
in album: TVアニメーション ネト充のススメ オリジナル・サウンドトラック
  type: MusicAlbum
  date published: 2017-12-27
isrc code: JPVI01731840
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T15:54:22+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x13f05d55a28d1d4674af892a9e17c388ab083b59d6f8664e94b3c913e0406d33
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960277
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960277
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI01731840
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T16:10:47Z
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 0x13f05d55a28d1d4674af892a9e17c388ab083b59d6f8664e94b3c913e0406d33. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/JPVI01731840.
  date published: 2026-07-30T16:10:47Z
audio: ひかり、ひかり（TV ver.）
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 175.66
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.292
  additional property: Energy
    type: PropertyValue
    value: 0.912
  additional property: Speechiness
    type: PropertyValue
    value: 0.074
  additional property: Acousticness
    type: PropertyValue
    value: 0.025
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.321
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.707
  additional property: Loudness (dB)
    type: PropertyValue
    value: -8.027
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major