FK
type: MusicGroup
description: FK or fk may refer to: Arts and entertainment Fox Kids, an American TV programming block (1990–2002) Funky Kong, a 1994 video game character Language Finders keepers (English adage) 'Footbal
popularity: 9
followers: 3458
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2d4e7fd2df9b362e0d4e3894fceffbe742d9e3e30ba27745642ef643592d1b23
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/99d2f87b-ae16-49b1-991a-8a2278b3e403.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/99d2f87b-ae16-49b1-991a-8a2278b3e403.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/99d2f87b-ae16-49b1-991a-8a2278b3e403
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
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 0x2d4e7fd2df9b362e0d4e3894fceffbe742d9e3e30ba27745642ef643592d1b23. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/99d2f87b-ae16-49b1-991a-8a2278b3e403.json and https://artists.proofprofile.net/proofs/artist/99d2f87b-ae16-49b1-991a-8a2278b3e403.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
album: EP
  type: MusicAlbum
  date published: 2020-04-28
album: black flower
  type: MusicAlbum
  date published: 2020-11-27
album: With You (Remixed)
  type: MusicAlbum
  date published: 2021-03-23
album: maps
  type: MusicAlbum
  date published: 2021-04-06
  track: silence
    type: MusicRecording
    duration: PT1M38S
    duration ms: 98181
    explicit: false
    by artist: FK
    in album: maps
      type: MusicAlbum
      date published: 2021-04-06
    isrc code: TCAFL2163562
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T20:55:24+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x8811be0a8fa8b01e4c575a24ca516e07aed91160e89ce2d5a878e0407fe18f71
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958783
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958783
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFL2163562
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T21:20:45Z
    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 0x8811be0a8fa8b01e4c575a24ca516e07aed91160e89ce2d5a878e0407fe18f71. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/TCAFL2163562.
      date published: 2026-07-19T21:20:45Z
    audio: silence
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 87.999
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.371
      additional property: Energy
        type: PropertyValue
        value: 0.213
      additional property: Speechiness
        type: PropertyValue
        value: 0.028
      additional property: Acousticness
        type: PropertyValue
        value: 0.791
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.869
      additional property: Liveness
        type: PropertyValue
        value: 0.125
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.103
      additional property: Loudness (dB)
        type: PropertyValue
        value: -14.077
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Live Die Repeat
  type: MusicAlbum
  date published: 2021-06-29
album: Keep Going or Else
  type: MusicAlbum
  date published: 2021-10-05
album: other maps
  type: MusicAlbum
  date published: 2022-01-25
album: Happy Mess
  type: MusicAlbum
  date published: 2022-03-22
album: a storm of flowers
  type: MusicAlbum
  date published: 2022-08-09
album: What We Gone Do Today
  type: MusicAlbum
  date published: 2022-10-12
album: Infinite Space
  type: MusicAlbum
  date published: 2023-01-04
album: AF
  type: MusicAlbum
  date published: 2023-01-25
album: Do I Dare
  type: MusicAlbum
  date published: 2023-06-20
album: There's No Place Like
  type: MusicAlbum
  date published: 2023-08-22
album: silence (extended remix)
  type: MusicAlbum
  date published: 2024-02-12
album: Could of Been (Remix)
  type: MusicAlbum
  date published: 2024-04-30
album: Evocation
  type: MusicAlbum
  date published: 2024-10-01
album: throb
  type: MusicAlbum
  date published: 2025-01-07
  track: throb
    type: MusicRecording
    duration: PT2M42S
    duration ms: 162125
    explicit: false
    by artist: FK
    in album: throb
      type: MusicAlbum
      date published: 2025-01-07
    isrc code: TCAJC2481470
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T08:21:17+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x6453ce0adca37a8028162555969468d3f95e3d4eade0dce97e33acf2f581957f
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958985
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958985
    additional property: OTSVerificationAPI
    additional property: OTSTimestamp
    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
    audio: throb
album: silence (3)
album: dreamstate

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAJC2481470

OTSTimestamp
type: PropertyValue
value: 2026-07-21T08:39:15Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6453ce0adca37a8028162555969468d3f95e3d4eade0dce97e33acf2f581957f. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/TCAJC2481470.
date published: 2026-07-21T08:39:15Z

throb
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 120.004
additional property: Musical Key
  type: PropertyValue
  value: 7
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.459
additional property: Energy
  type: PropertyValue
  value: 0.69
additional property: Speechiness
  type: PropertyValue
  value: 0.046
additional property: Acousticness
  type: PropertyValue
  value: 0.032
additional property: Instrumentalness
  type: PropertyValue
  value: 0.608
additional property: Liveness
  type: PropertyValue
  value: 0.16
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.089
additional property: Loudness (dB)
  type: PropertyValue
  value: -6.303
additional property: Key Name
  type: PropertyValue
  value: G
additional property: Mode Name
  type: PropertyValue
  value: Major

silence (3)
type: MusicAlbum
date published: 2025-05-13

dreamstate
type: MusicAlbum
date published: 2025-08-19