Natsumi Saito
type: MusicGroup
popularity: 3
followers: 11
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x97cc70ee0992cb45d5abb62d39cdd3c3865dacb4234f6119f5956e8534cca317
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8162987c-ad61-4726-a68b-39eedb9a96ba.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8162987c-ad61-4726-a68b-39eedb9a96ba.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8162987c-ad61-4726-a68b-39eedb9a96ba
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x97cc70ee0992cb45d5abb62d39cdd3c3865dacb4234f6119f5956e8534cca317","name":"Natsumi Saito","registered_at":"2026-06-17T10:46:02Z","symbol":"NIM1371155","token_address":"0x2c7f3e9b9950484b01b2e52466f28b4497fc1c38","type":"artist","uuid":"8162987c-ad61-4726-a68b-39eedb9a96ba"}
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 0x97cc70ee0992cb45d5abb62d39cdd3c3865dacb4234f6119f5956e8534cca317. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8162987c-ad61-4726-a68b-39eedb9a96ba.json and https://artists.proofprofile.net/proofs/artist/8162987c-ad61-4726-a68b-39eedb9a96ba.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x97cc70ee0992cb45d5abb62d39cdd3c3865dacb4234f6119f5956e8534cca317","name":"Natsumi Saito","registered_at":"2026-06-17T10:46:02Z","symbol":"NIM1371155","token_address":"0x2c7f3e9b9950484b01b2e52466f28b4497fc1c38","type":"artist","uuid":"8162987c-ad61-4726-a68b-39eedb9a96ba"}
album: ヨアソビ・ドゥームショップ
  type: MusicAlbum
  date published: 2024-12-31
album: 斉藤
  type: MusicAlbum
  date published: 2025-01-17
album: 執着の魂
  type: MusicAlbum
  date published: 2025-03-03
album: Xote dos Cabeludos (Hoodtrap version)
  type: MusicAlbum
  date published: 2025-06-03
  track: Xote dos Cabeludos - Hoodtrap version
    type: MusicRecording
    duration: PT2M4S
    duration ms: 124633
    explicit: false
    by artist: Natsumi Saito
    in album: Xote dos Cabeludos (Hoodtrap version)
      type: MusicAlbum
      date published: 2025-06-03
    isrc code: QZTAX2588396
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T09:36:29+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x66272da0e0f4aebec4219ec30b90babb433874724b12631b3ebc1a7ecc517fdd
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958857
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958857
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAX2588396
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T09:45:25Z
    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 0x66272da0e0f4aebec4219ec30b90babb433874724b12631b3ebc1a7ecc517fdd. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZTAX2588396.
      date published: 2026-07-20T09:45:25Z
    audio: Xote dos Cabeludos - Hoodtrap version
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 142.453
      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: 0.866
      additional property: Energy
        type: PropertyValue
        value: 0.668
      additional property: Speechiness
        type: PropertyValue
        value: 0.075
      additional property: Acousticness
        type: PropertyValue
        value: 0.142
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.025
      additional property: Liveness
        type: PropertyValue
        value: 0.101
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.808
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.639
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major