kurffew
type: MusicGroup
popularity: 49
followers: 74733
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa65bad9029205daf2fc57e681877232a8987252d9f972acab99d7ea28eb4c3e3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fa4c0bfe-f870-4810-81e8-4b7252717910.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fa4c0bfe-f870-4810-81e8-4b7252717910.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fa4c0bfe-f870-4810-81e8-4b7252717910
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
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 0xa65bad9029205daf2fc57e681877232a8987252d9f972acab99d7ea28eb4c3e3. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa4c0bfe-f870-4810-81e8-4b7252717910.json and https://artists.proofprofile.net/proofs/artist/fa4c0bfe-f870-4810-81e8-4b7252717910.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
album: lazy
  type: MusicAlbum
  date published: 2023-01-11
album: i dont wna cry
  type: MusicAlbum
  date published: 2023-01-14
album: romanticwityob!tch
  type: MusicAlbum
  date published: 2023-02-02
album: let her go
  type: MusicAlbum
  date published: 2023-03-03
album: i h8 skewl
  type: MusicAlbum
  date published: 2023-03-31
  track: i h8 skewl
    type: MusicRecording
    duration: PT2M4S
    duration ms: 124220
    explicit: true
    by artist: kurffew
    in album: i h8 skewl
      type: MusicAlbum
      date published: 2023-03-31
    isrc code: QZHN42327135
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-15T21:43:03+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xdba9e907ba4009feed68ff3d7680ce4148b7787d044865862c91e83794bc7d12
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958208
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958208
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN42327135
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T22:40:25Z
    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 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 0xdba9e907ba4009feed68ff3d7680ce4148b7787d044865862c91e83794bc7d12. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZHN42327135.
      date published: 2026-07-15T22:40:25Z
    audio: i h8 skewl
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 172.478
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.589
      additional property: Energy
        type: PropertyValue
        value: 0.819
      additional property: Speechiness
        type: PropertyValue
        value: 0.08
      additional property: Acousticness
        type: PropertyValue
        value: 0.001
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.73
      additional property: Liveness
        type: PropertyValue
        value: 0.074
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.887
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.706
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: i wna be like you
  type: MusicAlbum
  date published: 2023-04-14
album: run
  type: MusicAlbum
  date published: 2023-04-25
album: concussion
  type: MusicAlbum
  date published: 2023-05-10
album: unwind
  type: MusicAlbum
  date published: 2023-05-24
album: signs
  type: MusicAlbum
  date published: 2023-06-09
album: I Dont Wna Cry
  type: MusicAlbum
  date published: 2023-07-01
album: since you left
  type: MusicAlbum
  date published: 2023-08-11
album: big boat theory
  type: MusicAlbum
  date published: 2023-09-01
album: i see pain
  type: MusicAlbum
  date published: 2023-11-17
album: fine
  type: MusicAlbum
  date published: 2023-11-30
album: gf
  type: MusicAlbum
  date published: 2025-07-24