natsume
type: MusicGroup
genre: indie electronic
genre: vocaloid
description: Natsume (夏目, 夏芽, 棗, なつめ or ナツメ) is a Japanese feminine given name and a surname, and may refer to: People with the given name , a Japanese drummer and voice actress , a Japanese light novel author an
popularity: 5
followers: 140
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa0f26d8a2a44f068330245c282589c1917bd0bea83fa953125eca46595ccb645
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954038
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954038
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3e2c37d8-b11f-48a0-b520-000b793183ca.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3e2c37d8-b11f-48a0-b520-000b793183ca.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3e2c37d8-b11f-48a0-b520-000b793183ca
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T02:57:22Z
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 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 0xa0f26d8a2a44f068330245c282589c1917bd0bea83fa953125eca46595ccb645. Chain 2 (Bitcoin): anchored in block 954038 (2026-06-17T02:57:22Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3e2c37d8-b11f-48a0-b520-000b793183ca.json and https://artists.proofprofile.net/proofs/artist/3e2c37d8-b11f-48a0-b520-000b793183ca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T02:57:22Z
album: Anywhere
  type: MusicAlbum
  date published: 2024-07-10
album: Anywhere
  type: MusicAlbum
  date published: 2024-07-10
album: Florets
  type: MusicAlbum
  date published: 2024-12-11
album: Florets
  type: MusicAlbum
  date published: 2024-12-11
album: 透明になれたら
  type: MusicAlbum
  date published: 2024-12-29
album: tomei ni naretara
  type: MusicAlbum
  date published: 2024-12-29
album: イデア (feat. 初音ミク & 可不)
  type: MusicAlbum
  date published: 2025-02-23
album: idea (feat. HATSUNE MIKU & KAFU)
  type: MusicAlbum
  date published: 2025-02-23
album: cobalt
  type: MusicAlbum
  date published: 2025-04-05
album: cobalt
  type: MusicAlbum
  date published: 2025-04-05
album: Flawless (feat. iu, ハヤテ & suu)
  type: MusicAlbum
  date published: 2025-07-01
album: Flawless (feat. iu, hayate & suu)
  type: MusicAlbum
  date published: 2025-07-01
album: fade
  type: MusicAlbum
  date published: 2025-07-12
album: fade
  type: MusicAlbum
  date published: 2025-07-12
  track: fade
    type: MusicRecording
    duration: PT3M33S
    duration ms: 213000
    explicit: false
    by artist: natsume
    in album: fade
      type: MusicAlbum
      date published: 2025-07-12
    genre: indie electronic
    genre: vocaloid
    isrc code: TCJPJ2572020
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T18:50:24+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x403191409898e1903f110a52241d1407ccc90aae70f9b82332df20f7ead65da3
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958600
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958600
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPJ2572020
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T19:24:05Z
    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 0x403191409898e1903f110a52241d1407ccc90aae70f9b82332df20f7ead65da3. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/TCJPJ2572020.
      date published: 2026-07-18T19:24:05Z
    audio: fade
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 157.008
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.488
      additional property: Energy
        type: PropertyValue
        value: 0.903
      additional property: Speechiness
        type: PropertyValue
        value: 0.421
      additional property: Acousticness
        type: PropertyValue
        value: 0.097
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.252
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.402
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.665
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major