Greenfield & Cook
type: MusicGroup
genre: nederpop
popularity: 26
followers: 2238
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf88141d2fe14e4610fad85a99b07863309d0cb7f06e936a5167bd180cb078dbe
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/cf9c3fe1-0d12-40d8-9c6e-55c34cd8663e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cf9c3fe1-0d12-40d8-9c6e-55c34cd8663e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cf9c3fe1-0d12-40d8-9c6e-55c34cd8663e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf88141d2fe14e4610fad85a99b07863309d0cb7f06e936a5167bd180cb078dbe","name":"Greenfield & Cook","registered_at":"2026-06-12T10:14:15Z","symbol":"NIM0266779","token_address":"0x8f3ef36784bfc136b9c4f83b440bbb23907536d7","type":"artist","uuid":"cf9c3fe1-0d12-40d8-9c6e-55c34cd8663e"}
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88141d2fe14e4610fad85a99b07863309d0cb7f06e936a5167bd180cb078dbe. 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/cf9c3fe1-0d12-40d8-9c6e-55c34cd8663e.json and https://artists.proofprofile.net/proofs/artist/cf9c3fe1-0d12-40d8-9c6e-55c34cd8663e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0xf88141d2fe14e4610fad85a99b07863309d0cb7f06e936a5167bd180cb078dbe","name":"Greenfield & Cook","registered_at":"2026-06-12T10:14:15Z","symbol":"NIM0266779","token_address":"0x8f3ef36784bfc136b9c4f83b440bbb23907536d7","type":"artist","uuid":"cf9c3fe1-0d12-40d8-9c6e-55c34cd8663e"}
album: The End
  type: MusicAlbum
  date published: 1970
album: A Day Begins
  type: MusicAlbum
  date published: 1971-02-25
album: Only Lies
  type: MusicAlbum
  date published: 1971-08-12
album: Greenfield & Cook
  type: MusicAlbum
  date published: 1972-01-01
album: Greenfield & Cook
  type: MusicAlbum
  date published: 1972-02-15
album: Melody
  type: MusicAlbum
  date published: 1972-10-04
album: Second Album
  type: MusicAlbum
  date published: 1973-01-01
  track: Melody
    type: MusicRecording
    duration: PT3M8S
    duration ms: 188160
    explicit: false
    by artist: Greenfield & Cook
    in album: Second Album
      type: MusicAlbum
      date published: 1973-01-01
    genre: nederpop
    isrc code: NLA319100258
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T05:00:57+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xbea485dfbd6d720b373eb66d8fec35d99d80b41b8434e888ed0b47af4ff8cba6
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958369
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958369
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA319100258
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T08:02:28Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea485dfbd6d720b373eb66d8fec35d99d80b41b8434e888ed0b47af4ff8cba6. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T08:02:28Z), 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/NLA319100258.
      date published: 2026-07-17T08:02:28Z
    audio: Melody
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 129.34
      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: 0.413
      additional property: Energy
        type: PropertyValue
        value: 0.462
      additional property: Speechiness
        type: PropertyValue
        value: 0.033
      additional property: Acousticness
        type: PropertyValue
        value: 0.536
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.082
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.384
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.16
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Easy Boy
  type: MusicAlbum
  date published: 1973-06-05
album: Second Album
  type: MusicAlbum
  date published: 1973-07-26
  track: Easy Boy (And We All Prayed Together)
    type: MusicRecording
    duration: PT3M18S
    duration ms: 198106
    explicit: false
    by artist: Greenfield & Cook
    in album: Second Album
      type: MusicAlbum
      date published: 1973-07-26
    genre: nederpop
    isrc code: NLC287300220
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T17:49:02+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xa3981b2eca2f773f93011c3d4a04ad30e594e71897914406a2acc620f2fb5ee2
    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/NLC287300220
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3981b2eca2f773f93011c3d4a04ad30e594e71897914406a2acc620f2fb5ee2. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLC287300220.
      date published: 2026-07-05T01:12:41Z
    audio: Easy Boy (And We All Prayed Together)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 136.081
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
      additional property: Danceability
      additional property: Energy
      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Maybe A Lifetime
album: Golden Years Of Dutch Pop Music

Time Signature
type: PropertyValue
value: 4

Danceability
type: PropertyValue
value: 0.506

Energy
type: PropertyValue
value: 0.8

Speechiness
type: PropertyValue
value: 0.051

Acousticness
type: PropertyValue
value: 0.325

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.131

Valence (Positivity)
type: PropertyValue
value: 0.679

Loudness (dB)
type: PropertyValue
value: -11.118

Key Name
type: PropertyValue
value: Bb

Mode Name
type: PropertyValue
value: Major

Maybe A Lifetime
type: MusicAlbum
date published: 1974-04-04

Golden Years Of Dutch Pop Music
type: MusicAlbum
date published: 2017-01-27
track: A Day Begins
  type: MusicRecording
  duration: PT2M13S
  duration ms: 133920
  explicit: false
  by artist: Greenfield & Cook
  in album: Golden Years Of Dutch Pop Music
    type: MusicAlbum
    date published: 2017-01-27
  genre: nederpop
  isrc code: NLA319100252
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-17T02:32:19+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x9fa5681ebc52557a13ceb69f6a50f0b7eb7893111cfb698442daf9ea677c4434
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958355
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958355
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA319100252
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-17T03:11:50Z
  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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa5681ebc52557a13ceb69f6a50f0b7eb7893111cfb698442daf9ea677c4434. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/NLA319100252.
    date published: 2026-07-17T03:11:50Z
  audio: A Day Begins
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 129.914
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.357
    additional property: Energy
      type: PropertyValue
      value: 0.477
    additional property: Speechiness
      type: PropertyValue
      value: 0.03
    additional property: Acousticness
      type: PropertyValue
      value: 0.548
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.004
    additional property: Liveness
      type: PropertyValue
      value: 0.118
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.334
    additional property: Loudness (dB)
      type: PropertyValue
      value: -8.822
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Minor