John Clark
type: MusicGroup
description: John Clark may refer to: Entertainment John Clark or Signor Brocolini (1841–1906), Irish-born American operatic singer and actor John Clark (actor) (1932–2023), English actor and theatre director Joh
popularity: 19
followers: 6579
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2ddc563c4509c24431529f5d87387cc27a1b40eb21bf7372e38adeb9457706fd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953674
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953674
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5ec810eb-ac70-4d06-895f-5a39ca3c8268.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5ec810eb-ac70-4d06-895f-5a39ca3c8268.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5ec810eb-ac70-4d06-895f-5a39ca3c8268
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T19:07:16Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2ddc563c4509c24431529f5d87387cc27a1b40eb21bf7372e38adeb9457706fd","name":"John Clark","registered_at":"2026-06-14T14:25:23Z","symbol":"NIM0480926","token_address":"0x0d389bdd8b4963635c7a15c7a5f0b4a71e7cb84a","type":"artist","uuid":"5ec810eb-ac70-4d06-895f-5a39ca3c8268"}
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 0x2ddc563c4509c24431529f5d87387cc27a1b40eb21bf7372e38adeb9457706fd. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5ec810eb-ac70-4d06-895f-5a39ca3c8268.json and https://artists.proofprofile.net/proofs/artist/5ec810eb-ac70-4d06-895f-5a39ca3c8268.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T19:07:16Z
  text: {"copyright_id":"0x2ddc563c4509c24431529f5d87387cc27a1b40eb21bf7372e38adeb9457706fd","name":"John Clark","registered_at":"2026-06-14T14:25:23Z","symbol":"NIM0480926","token_address":"0x0d389bdd8b4963635c7a15c7a5f0b4a71e7cb84a","type":"artist","uuid":"5ec810eb-ac70-4d06-895f-5a39ca3c8268"}
album: Il Suono
  type: MusicAlbum
  date published: 1978
album: Faces
  type: MusicAlbum
  date published: 1981-03-01
album: Gummer Takes Umbrage
  type: MusicAlbum
  date published: 2009-04-06
album: Piano Lounge
  type: MusicAlbum
  date published: 2010-08-30
album: Determination
  type: MusicAlbum
  date published: 2019-10-13
album: Separated
  type: MusicAlbum
  date published: 2019-11-06
track: SexyBack (feat. Timbaland) - Linus Loves Remix
  type: MusicRecording
  duration: PT6M18S
  duration ms: 378693
  explicit: false
  by artist: Justin Timberlake
  by artist: Timbaland
  by artist: John Clark
  by artist: Linus Loves
  in album: 12" Masters - The Essential Mixes
    type: MusicAlbum
    date published: 2010-09-17
  genre: pop
  genre: dance-pop
  isrc code: USJI10600492
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-11T04:47:46+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x97b23882b1507855c3ca7543dfe3fdb621c5e861c9d04102da0543837b81d7fa
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 953528
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/953528
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJI10600492
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-06-13T15:41:10Z
  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 0x97b23882b1507855c3ca7543dfe3fdb621c5e861c9d04102da0543837b81d7fa. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USJI10600492.
    date published: 2026-06-13T15:41:10Z
  audio: SexyBack (feat. Timbaland) - Linus Loves Remix
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 132.959
    additional property: Musical Key
      type: PropertyValue
      value: 8
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.8
    additional property: Energy
      type: PropertyValue
      value: 0.636
    additional property: Speechiness
      type: PropertyValue
      value: 0.068
    additional property: Acousticness
      type: PropertyValue
      value: 0
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.806
    additional property: Liveness
      type: PropertyValue
      value: 0.1
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.877
    additional property: Loudness (dB)
      type: PropertyValue
      value: -9.901
    additional property: Key Name
      type: PropertyValue
      value: Ab
    additional property: Mode Name
      type: PropertyValue
      value: Major