Hana Watanabe
type: MusicGroup
genre: japanese classical
genre: traditional music
popularity: 7
followers: 95
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa2ae9f1813d6cf15505df8127d9d17e1537ead5bc2d14899368c9ac59c9334ff
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954516
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954516
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9f85238a-dad8-484e-a281-3b5283f4ae79.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9f85238a-dad8-484e-a281-3b5283f4ae79.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9f85238a-dad8-484e-a281-3b5283f4ae79
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T07:04:44Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa2ae9f1813d6cf15505df8127d9d17e1537ead5bc2d14899368c9ac59c9334ff","name":"Hana Watanabe","registered_at":"2026-06-20T05:31:51Z","symbol":"NIM1526113","token_address":"0x8f9693ccc1d70600bf29b2b7ae6aea1cccbfc1f6","type":"artist","uuid":"9f85238a-dad8-484e-a281-3b5283f4ae79"}
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 0xa2ae9f1813d6cf15505df8127d9d17e1537ead5bc2d14899368c9ac59c9334ff. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9f85238a-dad8-484e-a281-3b5283f4ae79.json and https://artists.proofprofile.net/proofs/artist/9f85238a-dad8-484e-a281-3b5283f4ae79.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T07:04:44Z
  text: {"copyright_id":"0xa2ae9f1813d6cf15505df8127d9d17e1537ead5bc2d14899368c9ac59c9334ff","name":"Hana Watanabe","registered_at":"2026-06-20T05:31:51Z","symbol":"NIM1526113","token_address":"0x8f9693ccc1d70600bf29b2b7ae6aea1cccbfc1f6","type":"artist","uuid":"9f85238a-dad8-484e-a281-3b5283f4ae79"}
album: Traditional Geisha Songs, Original Recordings, Vol. 3
  type: MusicAlbum
  date published: 2022-09-28
  track: Traditional Geisha Songs, Original Recordings, Vol. 3
    type: MusicRecording
    duration: PT8M56S
    duration ms: 536500
    explicit: false
    by artist: Hana Watanabe
    in album: Traditional Geisha Songs, Original Recordings, Vol. 3
      type: MusicAlbum
      date published: 2022-09-28
    genre: japanese classical
    genre: traditional music
    isrc code: QZTVM2256728
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T04:52:54+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x71dd75c3ee32a896fc24871cdd55fd0f252ed9a95a2109eb287613e1e8cfc3c0
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958366
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958366
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTVM2256728
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T07:55:20Z
    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 0x71dd75c3ee32a896fc24871cdd55fd0f252ed9a95a2109eb287613e1e8cfc3c0. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T07:55:20Z), 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/QZTVM2256728.
      date published: 2026-07-17T07:55:20Z
    audio: Traditional Geisha Songs, Original Recordings, Vol. 3
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 80.926
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.358
      additional property: Energy
        type: PropertyValue
        value: 0.24
      additional property: Speechiness
        type: PropertyValue
        value: 0.084
      additional property: Acousticness
        type: PropertyValue
        value: 0.969
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.396
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.235
      additional property: Loudness (dB)
        type: PropertyValue
        value: -14.539
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Traditional Geisha Songs, Original Recordings, Vol. 2
  type: MusicAlbum
  date published: 2022-09-28
album: Traditional Geisha Songs, Original Recordings, Vol. 1
  type: MusicAlbum
  date published: 2022-09-28
  track: Traditional Geisha Songs, Original Recordings, Vol. 1
    type: MusicRecording
    duration: PT13M19S
    duration ms: 799500
    explicit: false
    by artist: Hana Watanabe
    in album: Traditional Geisha Songs, Original Recordings, Vol. 1
      type: MusicAlbum
      date published: 2022-09-28
    genre: japanese classical
    genre: traditional music
    isrc code: QZTVM2256677
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T08:23:43+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x99ee54a5759e3e25077ec916135a5b67bd26617fc4cbbde32804754063d622df
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958268
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958268
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTVM2256677
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T11:27:13Z
    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 0x99ee54a5759e3e25077ec916135a5b67bd26617fc4cbbde32804754063d622df. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:27:13Z), 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/QZTVM2256677.
      date published: 2026-07-16T11:27:13Z
    audio: Traditional Geisha Songs, Original Recordings, Vol. 1
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 73.208
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.357
      additional property: Energy
        type: PropertyValue
        value: 0.31
      additional property: Speechiness
        type: PropertyValue
        value: 0.08
      additional property: Acousticness
        type: PropertyValue
        value: 0.97
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Fly!

Instrumentalness
type: PropertyValue
value: 0.002

Liveness
type: PropertyValue
value: 0.215

Valence (Positivity)
type: PropertyValue
value: 0.37

Loudness (dB)
type: PropertyValue
value: -13.839

Key Name
type: PropertyValue
value: C#

Mode Name
type: PropertyValue
value: Major

Fly!
type: MusicAlbum
date published: 2023-07-12