Keman
type: MusicGroup
description: thumb|A keman from Iemitsu mausoleum at Shiba temple (Zōjō-ji), gilt bronze ca. 1630. Figures are prob. karyobinga though identified as Kwannon in catalog. (Japanese phoneticization from the Sanskrit
popularity: 5
followers: 266
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d532e2b2-cbc1-4081-b580-9814100c53b0.ots
additional property: OTSRecordURL
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  value: https://artists.proofprofile.net/proofs/artist/d532e2b2-cbc1-4081-b580-9814100c53b0.json
additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d532e2b2-cbc1-4081-b580-9814100c53b0
additional property: OTSTimestamp
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  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
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 0x733e3d72b22c961862c9423da34e62b6b4ea0793ca3be610a86744aa123814e0. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d532e2b2-cbc1-4081-b580-9814100c53b0.json and https://artists.proofprofile.net/proofs/artist/d532e2b2-cbc1-4081-b580-9814100c53b0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
album: Pour Les Nôtres
  type: MusicAlbum
  date published: 2022-07-10
album: Gang Shit
  type: MusicAlbum
  date published: 2022-09-12
album: LSPLS
  type: MusicAlbum
  date published: 2022-10-12
album: FaceTime
  type: MusicAlbum
  date published: 2023-01-14
album: Rhythm & Antilove
  type: MusicAlbum
  date published: 2023-02-13
album: R&A
  type: MusicAlbum
  date published: 2023-07-17
album: Creepy Pasta
  type: MusicAlbum
  date published: 2023-08-06
album: Voyage Voyage
  type: MusicAlbum
  date published: 2023-11-26
album: Paris intra-muros
  type: MusicAlbum
  date published: 2023-12-20
album: Voyage Voyage
  type: MusicAlbum
  date published: 2024-01-31
  track: J’comprends
    type: MusicRecording
    duration: PT2M52S
    duration ms: 172093
    explicit: false
    by artist: Keman
    in album: Voyage Voyage
      type: MusicAlbum
      date published: 2024-01-31
    isrc code: TCAHW2406202
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
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    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958256
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAHW2406202
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T07:22:18Z
    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 0xa93afc6bfbcd851a241de23e7457404d62b36c1b185efcc12dc5ca4fa5bf6e86. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCAHW2406202.
      date published: 2026-07-16T07:22:18Z
    audio: J’comprends
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 95.101
      additional property: Musical Key
        type: PropertyValue
        value: 3
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.664
      additional property: Energy
        type: PropertyValue
        value: 0.341
      additional property: Speechiness
        type: PropertyValue
        value: 0.072
      additional property: Acousticness
        type: PropertyValue
        value: 0.785
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.033
      additional property: Liveness
        type: PropertyValue
        value: 0.218
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.418
      additional property: Loudness (dB)
        type: PropertyValue
        value: -15.06
      additional property: Key Name
        type: PropertyValue
        value: Eb
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Rhythm & Antilove, Pt. 2
  type: MusicAlbum
  date published: 2024-02-14
album: Shadow
  type: MusicAlbum
  date published: 2025-05-28
album: Autoroute du Soleil
  type: MusicAlbum
  date published: 2025-07-16
album: Nos Réalités
  type: MusicAlbum
  date published: 2025-07-17
album: Nzala
  type: MusicAlbum
  date published: 2025-11-04