Kirk Francis
type: MusicGroup
description: Kirk Francis may refer to: Kirk Francis (sound engineer) (1947–2026), American sound engineer Kirk Francis (American football) (born 2005), American football player
popularity: 20
followers: 1721
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4ff8d1b0d18099826813407bb31f23d948189aa9420a0d9f87f30144f4946511
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953687
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953687
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6734b422-606f-4375-a14a-e77da8b78da2.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6734b422-606f-4375-a14a-e77da8b78da2.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6734b422-606f-4375-a14a-e77da8b78da2
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T20:19:15Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4ff8d1b0d18099826813407bb31f23d948189aa9420a0d9f87f30144f4946511","name":"Kirk Francis","registered_at":"2026-06-14T15:21:00Z","symbol":"NIM0494202","token_address":"0xdcc1e00032350f8df45d59117af8fd5bb1998e9a","type":"artist","uuid":"6734b422-606f-4375-a14a-e77da8b78da2"}
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 0x4ff8d1b0d18099826813407bb31f23d948189aa9420a0d9f87f30144f4946511. Chain 2 (Bitcoin): anchored in block 953687 (2026-06-14T20:19:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6734b422-606f-4375-a14a-e77da8b78da2.json and https://artists.proofprofile.net/proofs/artist/6734b422-606f-4375-a14a-e77da8b78da2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T20:19:15Z
  text: {"copyright_id":"0x4ff8d1b0d18099826813407bb31f23d948189aa9420a0d9f87f30144f4946511","name":"Kirk Francis","registered_at":"2026-06-14T15:21:00Z","symbol":"NIM0494202","token_address":"0xdcc1e00032350f8df45d59117af8fd5bb1998e9a","type":"artist","uuid":"6734b422-606f-4375-a14a-e77da8b78da2"}
album: Words I Never Heard
  type: MusicAlbum
  date published: 2020-02-17
album: San Francisco
  type: MusicAlbum
  date published: 2020-11-14
  track: San Francisco
    type: MusicRecording
    duration: PT4M14S
    duration ms: 254840
    explicit: false
    by artist: Kirk Francis
    in album: San Francisco
      type: MusicAlbum
      date published: 2020-11-14
    isrc code: GBSMU8930273
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T11:05:06+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd78ae7ce001ff43fa97522cef48da00ec837d346867bdbbe665b4a368c0c78c8
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956551
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956551
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU8930273
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T21:18:05Z
    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 0xd78ae7ce001ff43fa97522cef48da00ec837d346867bdbbe665b4a368c0c78c8. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBSMU8930273.
      date published: 2026-07-03T21:18:05Z
    audio: San Francisco
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 110.009
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.692
      additional property: Energy
        type: PropertyValue
        value: 0.786
      additional property: Speechiness
        type: PropertyValue
        value: 0.032
      additional property: Acousticness
        type: PropertyValue
        value: 0.033
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.001
      additional property: Liveness
        type: PropertyValue
        value: 0.256
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.754
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.254
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Ophelia
  type: MusicAlbum
  date published: 2021-04-20
album: Going Backwards
  type: MusicAlbum
  date published: 2024-09-20