khøfi
type: MusicGroup
popularity: 2
followers: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe1e0e848e996d09bbfac9a5dfdb1dd8001bb26e2c74f7163ac2aa2e957affaaf
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
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/cfcc9122-6aa7-4933-bbdb-7016ac7902d1.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cfcc9122-6aa7-4933-bbdb-7016ac7902d1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cfcc9122-6aa7-4933-bbdb-7016ac7902d1
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe1e0e848e996d09bbfac9a5dfdb1dd8001bb26e2c74f7163ac2aa2e957affaaf","name":"khøfi","registered_at":"2026-06-21T00:40:24Z","symbol":"NIM1766241","token_address":"0x5c39ecb49244941335466a36df9ab5b59bdfed11","type":"artist","uuid":"cfcc9122-6aa7-4933-bbdb-7016ac7902d1"}
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 0xe1e0e848e996d09bbfac9a5dfdb1dd8001bb26e2c74f7163ac2aa2e957affaaf. 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/cfcc9122-6aa7-4933-bbdb-7016ac7902d1.json and https://artists.proofprofile.net/proofs/artist/cfcc9122-6aa7-4933-bbdb-7016ac7902d1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xe1e0e848e996d09bbfac9a5dfdb1dd8001bb26e2c74f7163ac2aa2e957affaaf","name":"khøfi","registered_at":"2026-06-21T00:40:24Z","symbol":"NIM1766241","token_address":"0x5c39ecb49244941335466a36df9ab5b59bdfed11","type":"artist","uuid":"cfcc9122-6aa7-4933-bbdb-7016ac7902d1"}
album: memories.
  type: MusicAlbum
  date published: 2025-11-10
album: sakura.
  type: MusicAlbum
  date published: 2025-11-12
  track: sakura.
    type: MusicRecording
    duration: PT2M4S
    duration ms: 124959
    explicit: false
    by artist: khøfi
    in album: sakura.
      type: MusicAlbum
      date published: 2025-11-12
    isrc code: QT6EV2501952
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T05:29:29+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x0102acfb2de33c3c990e9e17d1415a463b7fae0e0269b78071bf786ce66f8c1d
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956772
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956772
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT6EV2501952
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T10:01:46Z
    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 0x0102acfb2de33c3c990e9e17d1415a463b7fae0e0269b78071bf786ce66f8c1d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QT6EV2501952.
      date published: 2026-07-05T10:01:46Z
    audio: sakura.
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 100.041
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.681
      additional property: Energy
        type: PropertyValue
        value: 0.521
      additional property: Speechiness
        type: PropertyValue
        value: 0.157
      additional property: Acousticness
        type: PropertyValue
        value: 0.233
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.93
      additional property: Liveness
        type: PropertyValue
        value: 0.123
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.212
      additional property: Loudness (dB)
        type: PropertyValue
        value: -13.182
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: home.
  type: MusicAlbum
  date published: 2025-11-12