Larry "Rock" Campbell
type: MusicGroup
popularity: 14
followers: 38
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x500d82db542dd1d92086668d4fca2e15c34172b12f23937eee56c0a60c170362
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953678
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953678
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/61f37667-ea4b-4823-8c7d-54ea22d94304.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/61f37667-ea4b-4823-8c7d-54ea22d94304.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/61f37667-ea4b-4823-8c7d-54ea22d94304
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T19:23:11Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x500d82db542dd1d92086668d4fca2e15c34172b12f23937eee56c0a60c170362","name":"Larry \"Rock\" Campbell","registered_at":"2026-06-14T14:45:59Z","symbol":"NIM0485842","token_address":"0x2435bc107a9eba24a407c5cccd6366e214c31b87","type":"artist","uuid":"61f37667-ea4b-4823-8c7d-54ea22d94304"}
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 0x500d82db542dd1d92086668d4fca2e15c34172b12f23937eee56c0a60c170362. Chain 2 (Bitcoin): anchored in block 953678 (2026-06-14T19:23:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/61f37667-ea4b-4823-8c7d-54ea22d94304.json and https://artists.proofprofile.net/proofs/artist/61f37667-ea4b-4823-8c7d-54ea22d94304.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T19:23:11Z
  text: {"copyright_id":"0x500d82db542dd1d92086668d4fca2e15c34172b12f23937eee56c0a60c170362","name":"Larry \"Rock\" Campbell","registered_at":"2026-06-14T14:45:59Z","symbol":"NIM0485842","token_address":"0x2435bc107a9eba24a407c5cccd6366e214c31b87","type":"artist","uuid":"61f37667-ea4b-4823-8c7d-54ea22d94304"}
track: SexyBack (feat. Missy Elliott & Timbaland) - DJ Wayne Williams Ol' Skool Remix

SexyBack (feat. Missy Elliott & Timbaland) - DJ Wayne Williams Ol' Skool Remix
type: MusicRecording
duration: PT4M16S
duration ms: 256533
explicit: false
by artist: Justin Timberlake
by artist: Missy Elliott
by artist: Timbaland
by artist: Larry "Rock" Campbell
by artist: DJ Wayne Williams
in album: FutureSex/LoveSounds Deluxe Edition
  type: MusicAlbum
  date published: 2006-09-13
popularity: 28
genre: pop
genre: dance-pop
isrc code: USJI10700770
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-07T12:03:11+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5dd23abbfb5c43611fd9819e2d8719078a59a001414772a56aee7d9cbf07e1d9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953515
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953515
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJI10700770
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:53:06+00:00
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 953515
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-06-13T12:53:06+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd23abbfb5c43611fd9819e2d8719078a59a001414772a56aee7d9cbf07e1d9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USJI10700770.
  date published: 2026-06-13T17:25:41Z
audio: SexyBack (feat. Missy Elliott & Timbaland) - DJ Wayne Williams Ol' Skool Remix
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 129.56
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.805
  additional property: Energy
    type: PropertyValue
    value: 0.801
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.121
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.059
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.809
  additional property: Loudness (dB)
    type: PropertyValue
    value: -9.641
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major