Hiroko Ishimoto
type: MusicGroup
genre: classical piano
popularity: 20
followers: 229
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcc048cb0f9b96277639b9eb7688e15c05ce209d4485c68309d786dc6a961b38f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953713
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953713
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/83ef4dda-9f32-4a3d-8d46-d98af62999ce.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/83ef4dda-9f32-4a3d-8d46-d98af62999ce.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/83ef4dda-9f32-4a3d-8d46-d98af62999ce
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T00:33:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcc048cb0f9b96277639b9eb7688e15c05ce209d4485c68309d786dc6a961b38f","name":"Hiroko Ishimoto","registered_at":"2026-06-14T18:20:38Z","symbol":"NIM0537019","token_address":"0x468e0ee7d1bf6957105116d048b875656baf8934","type":"artist","uuid":"83ef4dda-9f32-4a3d-8d46-d98af62999ce"}
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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc048cb0f9b96277639b9eb7688e15c05ce209d4485c68309d786dc6a961b38f. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/83ef4dda-9f32-4a3d-8d46-d98af62999ce.json and https://artists.proofprofile.net/proofs/artist/83ef4dda-9f32-4a3d-8d46-d98af62999ce.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T00:33:41Z
  text: {"copyright_id":"0xcc048cb0f9b96277639b9eb7688e15c05ce209d4485c68309d786dc6a961b38f","name":"Hiroko Ishimoto","registered_at":"2026-06-14T18:20:38Z","symbol":"NIM0537019","token_address":"0x468e0ee7d1bf6957105116d048b875656baf8934","type":"artist","uuid":"83ef4dda-9f32-4a3d-8d46-d98af62999ce"}
album: Pioneers: Piano Works by Female Composers
  type: MusicAlbum
  date published: 2020-09-11
album: Pioneers: Piano Works by Female Composers
  type: MusicAlbum
  date published: 2020-09-11
  track: Blumenleben, Op. 19: No. 5, Rose
    type: MusicRecording
    duration: PT2M27S
    duration ms: 147200
    explicit: false
    by artist: Hiroko Ishimoto
    in album: Pioneers: Piano Works by Female Composers
      type: MusicAlbum
      date published: 2020-09-11
    genre: classical piano
    isrc code: HKI192009801
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T06:12:36+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe5838e65137bccf5eeb6dbc6051f115ba4cdbbd608913caadacec379cc5659b0
    additional property: OTSHash
    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956772
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI192009801
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T10:01:46Z
    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 0xe5838e65137bccf5eeb6dbc6051f115ba4cdbbd608913caadacec379cc5659b0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/HKI192009801.
      date published: 2026-07-05T10:01:46Z
    audio: Blumenleben, Op. 19: No. 5, Rose
      type: AudioObject
      additional property: Tempo (BPM)
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        value: 70.923
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.263
      additional property: Energy
        type: PropertyValue
        value: 0.071
      additional property: Speechiness
        type: PropertyValue
        value: 0.041
      additional property: Acousticness
        type: PropertyValue
        value: 0.994
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.86
      additional property: Liveness
        type: PropertyValue
        value: 0.114
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.056
      additional property: Loudness (dB)
        type: PropertyValue
        value: -25.434
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: 3 Morceaux: No. 2, D'un jardin clair
    type: MusicRecording
    duration: PT1M56S
    duration ms: 116800
    explicit: false
    by artist: Hiroko Ishimoto
    in album: Pioneers: Piano Works by Female Composers
      type: MusicAlbum
      date published: 2020-09-11
    genre: classical piano
    isrc code: HKI192009810
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-12T22:07:31+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x17a00e803c1d35b8b2dd17cb6c677ead6578238e4e9471d3d23a59b7145d22a9
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957766
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957766
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI192009810
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-12T22:25:04Z
    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 0x17a00e803c1d35b8b2dd17cb6c677ead6578238e4e9471d3d23a59b7145d22a9. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/HKI192009810.
      date published: 2026-07-12T22:25:04Z
    audio: 3 Morceaux: No. 2, D'un jardin clair
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 111.371
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.562
      additional property: Energy
        type: PropertyValue
        value: 0.024
      additional property: Speechiness
        type: PropertyValue
        value: 0.049
      additional property: Acousticness
        type: PropertyValue
        value: 0.994
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.922
      additional property: Liveness
        type: PropertyValue
        value: 0.084
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
  track: Children's Album, Op. 19 (Excerpts): No. 2, Music Box

Valence (Positivity)
type: PropertyValue
value: 0.149

Loudness (dB)
type: PropertyValue
value: -25.927

Key Name
type: PropertyValue
value: B

Mode Name
type: PropertyValue
value: Major

Children's Album, Op. 19 (Excerpts): No. 2, Music Box
type: MusicRecording
duration: PT1M18S
duration ms: 78946
explicit: false
by artist: Hiroko Ishimoto
in album: Pioneers: Piano Works by Female Composers
  type: MusicAlbum
  date published: 2020-09-11
genre: classical piano
isrc code: HKI192009818
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-04T18:43:22+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc452d33bd0f8da7a179c7ecc70e3b9c70fee476c6f7d283b5274b9ec4125e903
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 956725
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956725
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI192009818
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-05T01:12:41Z
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 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 0xc452d33bd0f8da7a179c7ecc70e3b9c70fee476c6f7d283b5274b9ec4125e903. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/HKI192009818.
  date published: 2026-07-05T01:12:41Z
audio: Children's Album, Op. 19 (Excerpts): No. 2, Music Box
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  additional property: Tempo (BPM)
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  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 3
  additional property: Danceability
    type: PropertyValue
    value: 0.374
  additional property: Energy
    type: PropertyValue
    value: 0.088
  additional property: Speechiness
    type: PropertyValue
    value: 0.051
  additional property: Acousticness
    type: PropertyValue
    value: 0.949
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.761
  additional property: Liveness
    type: PropertyValue
    value: 0.089
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.883
  additional property: Loudness (dB)
    type: PropertyValue
    value: -30.605
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major