lostko
type: MusicGroup
genre: rage rap
popularity: 6
followers: 165
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1b2d56c99c62d7263d924ba2b888a0b6754227465e679befc9fd0cccf119f896
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954693
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954693
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e4fbc1f3-3ee8-4bbd-b1c6-e7fc7861044c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e4fbc1f3-3ee8-4bbd-b1c6-e7fc7861044c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e4fbc1f3-3ee8-4bbd-b1c6-e7fc7861044c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T11:50:32Z
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 0x1b2d56c99c62d7263d924ba2b888a0b6754227465e679befc9fd0cccf119f896. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e4fbc1f3-3ee8-4bbd-b1c6-e7fc7861044c.json and https://artists.proofprofile.net/proofs/artist/e4fbc1f3-3ee8-4bbd-b1c6-e7fc7861044c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T11:50:32Z
album: if i was lost would you find me?
  type: MusicAlbum
  date published: 2023-06-09
album: City Lights
  type: MusicAlbum
  date published: 2023-08-09
album: Rainbow 6
  type: MusicAlbum
  date published: 2023-08-25
album: Lifestyle
  type: MusicAlbum
  date published: 2023-09-08
album: 4ever Luv
  type: MusicAlbum
  date published: 2023-09-29
album: party? no!
  type: MusicAlbum
  date published: 2024-03-03
album: antidote
  type: MusicAlbum
  date published: 2024-03-03
album: My Heart
  type: MusicAlbum
  date published: 2024-03-19
album: Rollin Up
  type: MusicAlbum
  date published: 2024-03-21
album: youu
  type: MusicAlbum
  date published: 2024-05-01
album: Style
  type: MusicAlbum
  date published: 2024-05-18
album: perfect!
  type: MusicAlbum
  date published: 2024-08-16
album: lost party
  type: MusicAlbum
  date published: 2024-09-27
album: daydreamin
  type: MusicAlbum
  date published: 2024-10-23
album: notice me
  type: MusicAlbum
  date published: 2024-11-29
album: hate/luv u
  type: MusicAlbum
  date published: 2024-12-17
album: ex
  type: MusicAlbum
  date published: 2025-01-03
  track: ex
    type: MusicRecording
    duration: PT2M8S
    duration ms: 128632
    explicit: true
    by artist: lostko
    in album: ex
      type: MusicAlbum
      date published: 2025-01-03
    genre: rage rap
    isrc code: QZFYX2553128
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T06:20:04+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x4d8e7ac4b80febab74fd1e81509150e6232fc9e9310a454df44096140c4bd4ae
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958256
    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/QZFYX2553128
    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 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 0x4d8e7ac4b80febab74fd1e81509150e6232fc9e9310a454df44096140c4bd4ae. 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/QZFYX2553128.
      date published: 2026-07-16T07:22:18Z
    audio: ex
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 102.58
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.611
      additional property: Energy
        type: PropertyValue
        value: 0.422
      additional property: Speechiness
        type: PropertyValue
        value: 0.441
      additional property: Acousticness
        type: PropertyValue
        value: 0.734
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.001
      additional property: Liveness
        type: PropertyValue
        value: 0.13
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.142
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.098
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: jackpot
  type: MusicAlbum
  date published: 2025-03-01
album: LA
  type: MusicAlbum
  date published: 2025-04-03
album: desert eagle
  type: MusicAlbum
  date published: 2025-06-29
album: summr16
  type: MusicAlbum
  date published: 2025-07-24
album: paranoid
  type: MusicAlbum
  date published: 2025-09-18