Otoha bunko
type: MusicGroup
popularity: 12
followers: 652
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2022b8d667bca20ed8e89290d4a85a8b1d4c06fc613ef91dd9f29b7b199eddc8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953741
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953741
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9f714562-e750-44cc-a65a-2e0ebab6b17b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9f714562-e750-44cc-a65a-2e0ebab6b17b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9f714562-e750-44cc-a65a-2e0ebab6b17b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T04:44:49Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2022b8d667bca20ed8e89290d4a85a8b1d4c06fc613ef91dd9f29b7b199eddc8","name":"Otoha bunko","registered_at":"2026-06-14T21:17:22Z","symbol":"NIM0579158","token_address":"0x18bc0b8ee13ca2ef3cf0868bb21eb134940b1a9f","type":"artist","uuid":"9f714562-e750-44cc-a65a-2e0ebab6b17b"}
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 0x2022b8d667bca20ed8e89290d4a85a8b1d4c06fc613ef91dd9f29b7b199eddc8. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9f714562-e750-44cc-a65a-2e0ebab6b17b.json and https://artists.proofprofile.net/proofs/artist/9f714562-e750-44cc-a65a-2e0ebab6b17b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T04:47:56Z
  text: {"copyright_id":"0x2022b8d667bca20ed8e89290d4a85a8b1d4c06fc613ef91dd9f29b7b199eddc8","name":"Otoha bunko","registered_at":"2026-06-14T21:17:22Z","symbol":"NIM0579158","token_address":"0x18bc0b8ee13ca2ef3cf0868bb21eb134940b1a9f","type":"artist","uuid":"9f714562-e750-44cc-a65a-2e0ebab6b17b"}
album: Hanagumori
  type: MusicAlbum
  date published: 2024-04-10
album: Kureai
  type: MusicAlbum
  date published: 2024-07-20
  track: Kureai
    type: MusicRecording
    duration: PT3M24S
    duration ms: 204102
    explicit: false
    by artist: Otoha bunko
    in album: Kureai
      type: MusicAlbum
      date published: 2024-07-20
    isrc code: TCJPB2410877
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xa54ee85ef70836046ce4b90e8ae9aa301e283552b18f0ed2c7d751ee6984a950
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958774
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958774
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPB2410877
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T22:50:41Z
    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 0xa54ee85ef70836046ce4b90e8ae9aa301e283552b18f0ed2c7d751ee6984a950. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:50:41Z), 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/TCJPB2410877.
      date published: 2026-07-19T22:50:41Z
    audio: Kureai
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 155.994
      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: 0.463
      additional property: Energy
        type: PropertyValue
        value: 0.791
      additional property: Speechiness
        type: PropertyValue
        value: 0.03
      additional property: Acousticness
        type: PropertyValue
        value: 0.058
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.141
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.614
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.12
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Balmy Breeze
  type: MusicAlbum
  date published: 2024-08-03
album: Fleeting
  type: MusicAlbum
  date published: 2024-08-17
album: Flowing Light
  type: MusicAlbum
  date published: 2024-09-07
album: Remembrance
  type: MusicAlbum
  date published: 2024-11-02
album: haiku
  type: MusicAlbum
  date published: 2025-02-18
  track: haiku
    type: MusicRecording
    duration: PT1M44S
    duration ms: 104516
    explicit: false
    by artist: Otoha bunko
    in album: haiku
      type: MusicAlbum
      date published: 2025-02-18
    isrc code: TCJPD2599859
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x4c52e318766aec2d4867e3144ea73229489cb3b1957414fcd69c79ea69ab3d8e
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958601
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958601
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPD2599859
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T19:27:02Z
    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 0x4c52e318766aec2d4867e3144ea73229489cb3b1957414fcd69c79ea69ab3d8e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCJPD2599859.
      date published: 2026-07-18T19:27:02Z
    audio: haiku
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 124.013
      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: 0.59
      additional property: Energy
        type: PropertyValue
        value: 0.043
      additional property: Speechiness
        type: PropertyValue
        value: 0.04
      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: Koigoromo

Acousticness
type: PropertyValue
value: 0.975

Instrumentalness
type: PropertyValue
value: 0.919

Liveness
type: PropertyValue
value: 0.358

Valence (Positivity)
type: PropertyValue
value: 0.342

Loudness (dB)
type: PropertyValue
value: -26.251

Key Name
type: PropertyValue
value: Ab

Mode Name
type: PropertyValue
value: Major

Koigoromo
type: MusicAlbum
date published: 2025-05-14