Jan Keefa
type: MusicGroup
popularity: 10
followers: 106
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd768f28255051f26ea155c64e7bee09b795c8db0f2d10d196e4669bbed612002
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954705
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954705
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ee055651-32a7-4c48-9560-25fbd00cbf13.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ee055651-32a7-4c48-9560-25fbd00cbf13.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ee055651-32a7-4c48-9560-25fbd00cbf13
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T13:42:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd768f28255051f26ea155c64e7bee09b795c8db0f2d10d196e4669bbed612002","name":"Jan Keefa","registered_at":"2026-06-21T11:32:10Z","symbol":"NIM1912054","token_address":"0xdad55d4caffc6900d3767071e27a4e862dfd9a2b","type":"artist","uuid":"ee055651-32a7-4c48-9560-25fbd00cbf13"}
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 0xd768f28255051f26ea155c64e7bee09b795c8db0f2d10d196e4669bbed612002. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee055651-32a7-4c48-9560-25fbd00cbf13.json and https://artists.proofprofile.net/proofs/artist/ee055651-32a7-4c48-9560-25fbd00cbf13.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T13:42:37Z
  text: {"copyright_id":"0xd768f28255051f26ea155c64e7bee09b795c8db0f2d10d196e4669bbed612002","name":"Jan Keefa","registered_at":"2026-06-21T11:32:10Z","symbol":"NIM1912054","token_address":"0xdad55d4caffc6900d3767071e27a4e862dfd9a2b","type":"artist","uuid":"ee055651-32a7-4c48-9560-25fbd00cbf13"}
album: Black Day
  type: MusicAlbum
  date published: 2021-04-07
album: Rhythm
  type: MusicAlbum
  date published: 2021-06-07
album: Island
  type: MusicAlbum
  date published: 2021-06-26
album: Soft Age
  type: MusicAlbum
  date published: 2021-06-26
  track: Gifted
    type: MusicRecording
    duration: PT3M13S
    duration ms: 193810
    explicit: false
    by artist: Jan Keefa
    in album: Soft Age
      type: MusicAlbum
      date published: 2021-06-26
    isrc code: FRX202143655
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T17:37:32+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x2550d48e0fea9acbf4874532424054b853f624f7fdf8f335276163998989d87a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956725
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956725
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX202143655
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T01:12:41Z
    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 0x2550d48e0fea9acbf4874532424054b853f624f7fdf8f335276163998989d87a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX202143655 — a six-check JSON result.
      date published: 2026-07-05T01:12:41Z
    audio: Gifted
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 120.029
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.812
      additional property: Energy
        type: PropertyValue
        value: 0.194
      additional property: Speechiness
        type: PropertyValue
        value: 0.115
      additional property: Acousticness
        type: PropertyValue
        value: 0.059
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.868
      additional property: Liveness
        type: PropertyValue
        value: 0.112
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.49
      additional property: Loudness (dB)
        type: PropertyValue
        value: -18.395
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Paradise
  type: MusicAlbum
  date published: 2021-06-26
album: Northern Lines
  type: MusicAlbum
  date published: 2021-06-26
album: Slow Fan
  type: MusicAlbum
  date published: 2021-06-27
album: Pink Water
  type: MusicAlbum
  date published: 2021-06-27
album: Panda Love
  type: MusicAlbum
  date published: 2021-06-27
album: Nature
  type: MusicAlbum
  date published: 2021-06-27
album: Heavy Motion
  type: MusicAlbum
  date published: 2021-06-27
album: Disco
  type: MusicAlbum
  date published: 2021-06-27
album: Deep Stars
  type: MusicAlbum
  date published: 2021-06-27
album: Affair
  type: MusicAlbum
  date published: 2021-06-27
album: Weather
  type: MusicAlbum
  date published: 2021-06-27
album: Think Of Flowers
  type: MusicAlbum
  date published: 2021-06-27
album: Sweet Home
  type: MusicAlbum
  date published: 2021-06-27
album: Sun
  type: MusicAlbum
  date published: 2021-06-27
album: Spring
  type: MusicAlbum
  date published: 2021-06-27
album: Softer Angle
  type: MusicAlbum
  date published: 2021-06-28
album: Sleep Game
  type: MusicAlbum
  date published: 2021-06-28
album: Red Colour
  type: MusicAlbum
  date published: 2021-06-28
album: Rain Boots
  type: MusicAlbum
  date published: 2021-06-28
album: Pink Stories
  type: MusicAlbum
  date published: 2021-06-28
album: Inside Wave
  type: MusicAlbum
  date published: 2021-06-28
album: Driver
  type: MusicAlbum
  date published: 2021-06-28
album: Cofee House
album: Wind
album: Tender Cue
album: Style
album: Soft Club
album: Movie Buff
album: Past Mystery
album: Bask Life

Cofee House
type: MusicAlbum
date published: 2021-06-28

Wind
type: MusicAlbum
date published: 2021-06-28

Tender Cue
type: MusicAlbum
date published: 2021-06-28

Style
type: MusicAlbum
date published: 2021-06-28

Soft Club
type: MusicAlbum
date published: 2021-06-28

Movie Buff
type: MusicAlbum
date published: 2022-12-22

Past Mystery
type: MusicAlbum
date published: 2024-04-19

Bask Life
type: MusicAlbum
date published: 2024-05-02