Yu Ichinose
type: MusicGroup
genre: vocaloid
popularity: 6
followers: 1876
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x438405baa57b5a5485a100376f1e9b02623c27d51dd326b882db2a061403f680
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/92d56e4e-ce1a-44ab-aa68-c4b5334e40fa.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/92d56e4e-ce1a-44ab-aa68-c4b5334e40fa.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/92d56e4e-ce1a-44ab-aa68-c4b5334e40fa
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x438405baa57b5a5485a100376f1e9b02623c27d51dd326b882db2a061403f680","name":"Yu Ichinose","registered_at":"2026-06-17T16:55:37Z","symbol":"NIM1459266","token_address":"0xe98d8d384674abab49bd3b67b224fec75d4a0762","type":"artist","uuid":"92d56e4e-ce1a-44ab-aa68-c4b5334e40fa"}
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 0x438405baa57b5a5485a100376f1e9b02623c27d51dd326b882db2a061403f680. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/92d56e4e-ce1a-44ab-aa68-c4b5334e40fa.json and https://artists.proofprofile.net/proofs/artist/92d56e4e-ce1a-44ab-aa68-c4b5334e40fa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0x438405baa57b5a5485a100376f1e9b02623c27d51dd326b882db2a061403f680","name":"Yu Ichinose","registered_at":"2026-06-17T16:55:37Z","symbol":"NIM1459266","token_address":"0xe98d8d384674abab49bd3b67b224fec75d4a0762","type":"artist","uuid":"92d56e4e-ce1a-44ab-aa68-c4b5334e40fa"}
album: Allone
  type: MusicAlbum
  date published: 2017-01-25
album: 君との境界
  type: MusicAlbum
  date published: 2017-11-22
album: 君との境界
  type: MusicAlbum
  date published: 2017-11-29
  track: Black Board
    type: MusicRecording
    duration: PT3M38S
    duration ms: 218000
    explicit: false
    by artist: Yu Ichinose
    in album: 君との境界
      type: MusicAlbum
      date published: 2017-11-29
    genre: vocaloid
    isrc code: JPPO01706117
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T02:50:53+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xfe740983f7ef9851ebcf8b33d65343e9d306f2a8bf2a995a37b97f4affbe9717
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958955
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958955
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPO01706117
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T03:03:40Z
    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 0xfe740983f7ef9851ebcf8b33d65343e9d306f2a8bf2a995a37b97f4affbe9717. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/JPPO01706117.
      date published: 2026-07-21T03:03:40Z
    audio: Black Board
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 125.95
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.627
      additional property: Energy
        type: PropertyValue
        value: 0.956
      additional property: Speechiness
        type: PropertyValue
        value: 0.138
      additional property: Acousticness
        type: PropertyValue
        value: 0.046
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.072
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.694
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.05
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: 心做し
  type: MusicAlbum
  date published: 2020-03-25
album: シエレトワール
  type: MusicAlbum
  date published: 2020-04-29
  track: シエレトワール
    type: MusicRecording
    duration: PT3M13S
    duration ms: 193693
    explicit: false
    by artist: Yu Ichinose
    in album: シエレトワール
      type: MusicAlbum
      date published: 2020-04-29
    genre: vocaloid
    isrc code: JPPO02001177
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T10:37:20+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x5182927ad7ab401d55746a1e8a931e93c89468d3fa6826904fd035897eab0f37
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958996
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958996
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPO02001177
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T10:57:35Z
    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 0x5182927ad7ab401d55746a1e8a931e93c89468d3fa6826904fd035897eab0f37. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/JPPO02001177.
      date published: 2026-07-21T10:57:35Z
    audio: シエレトワール
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 183.982
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.488
      additional property: Energy
        type: PropertyValue
        value: 0.968
      additional property: Speechiness
        type: PropertyValue
        value: 0.059
      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: Story End
album: セイシュンライナー
album: LOVING ESCAPE
album: 例えばの話を

Acousticness
type: PropertyValue
value: 0.083

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.358

Valence (Positivity)
type: PropertyValue
value: 0.958

Loudness (dB)
type: PropertyValue
value: -3.431

Key Name
type: PropertyValue
value: E

Mode Name
type: PropertyValue
value: Minor

Story End
type: MusicAlbum
date published: 2020-05-27

セイシュンライナー
type: MusicAlbum
date published: 2020-06-24

LOVING ESCAPE
type: MusicAlbum
date published: 2020-07-29

例えばの話を
type: MusicAlbum
date published: 2020-08-26