Jeffrey
type: MusicGroup
description: Jeffrey may refer to: People Jeffrey (given name), a male given name in English Jeffrey (surname), a surname from English Places Jeffrey's, Newfoundland and Labrador, Canada Jeffrey City, Wyoming,
popularity: 10
followers: 1113
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd9743874f86adc39a188d02e5fe54d75bc581c8a4423cf25a968066dfe7e23e6
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/971ef2b0-ffff-4e6d-935d-e234ce2fec82.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/971ef2b0-ffff-4e6d-935d-e234ce2fec82.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/971ef2b0-ffff-4e6d-935d-e234ce2fec82
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 0xd9743874f86adc39a188d02e5fe54d75bc581c8a4423cf25a968066dfe7e23e6. 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/971ef2b0-ffff-4e6d-935d-e234ce2fec82.json and https://artists.proofprofile.net/proofs/artist/971ef2b0-ffff-4e6d-935d-e234ce2fec82.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
album: Dans For Mig
  type: MusicAlbum
  date published: 2011-01-24
album: Dans For Mig
  type: MusicAlbum
  date published: 2011-01-24
album: Dans Med Mig
  type: MusicAlbum
  date published: 2011-01-24
album: Drømmen
  type: MusicAlbum
  date published: 2011-02-25
album: Drømmen
  type: MusicAlbum
  date published: 2011-02-25
album: Drømmen
  type: MusicAlbum
  date published: 2011-02-25
album: Dans For Mig (Remixes)
  type: MusicAlbum
  date published: 2011-04-04
album: Dance With Me
  type: MusicAlbum
  date published: 2011-09-26
album: Ekko
  type: MusicAlbum
  date published: 2012-05-14
album: Ekko
  type: MusicAlbum
  date published: 2016-06-24
album: Ekko
  type: MusicAlbum
  date published: 2016-06-24
album: Ekko
  type: MusicAlbum
  date published: 2016-06-24
  track: Ekko
    type: MusicRecording
    duration: PT3M30S
    duration ms: 210990
    explicit: false
    by artist: Jeffrey
    in album: Ekko
      type: MusicAlbum
      date published: 2016-06-24
    isrc code: DKFJ41500140
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T11:44:35+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe070f78d578ef57a4be902ab37ba7fed467b271b74ef284f13f7a37093098f94
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956822
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956822
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKFJ41500140
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T18:48:28Z
    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 0xe070f78d578ef57a4be902ab37ba7fed467b271b74ef284f13f7a37093098f94. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DKFJ41500140.
      date published: 2026-07-05T18:48:28Z
    audio: Ekko
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 179.96
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.553
      additional property: Energy
        type: PropertyValue
        value: 0.862
      additional property: Speechiness
        type: PropertyValue
        value: 0.044
      additional property: Acousticness
        type: PropertyValue
        value: 0.002
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.17
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.151
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.131
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: LOVE BUG
  type: MusicAlbum
  date published: 2023-03-18
album: MR CRASHOUT
  type: MusicAlbum
  date published: 2023-03-30
album: Cuz Seen
  type: MusicAlbum
  date published: 2023-04-18