Jack Purvis
type: MusicGroup
description: Jack Purvis may refer to: Jack Purvis (musician) (1906–1962), American jazz musician Jack Purvis (actor) (1937–1997), British actor See also John Purvis (disambiguation)
popularity: 10
followers: 420
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x32c6c8f879c0fa309572f6052d60f48e3d7180448c4617c77957f3e5c280ecb4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954533
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954533
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a7c88fd3-9578-4565-aa56-e6e5c7ccb86b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a7c88fd3-9578-4565-aa56-e6e5c7ccb86b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a7c88fd3-9578-4565-aa56-e6e5c7ccb86b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T08:57:02Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x32c6c8f879c0fa309572f6052d60f48e3d7180448c4617c77957f3e5c280ecb4","name":"Jack Purvis","registered_at":"2026-06-20T07:58:41Z","symbol":"NIM1562812","token_address":"0x6b93db634441eae36a91b697ecb490272734c312","type":"artist","uuid":"a7c88fd3-9578-4565-aa56-e6e5c7ccb86b"}
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 0x32c6c8f879c0fa309572f6052d60f48e3d7180448c4617c77957f3e5c280ecb4. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a7c88fd3-9578-4565-aa56-e6e5c7ccb86b.json and https://artists.proofprofile.net/proofs/artist/a7c88fd3-9578-4565-aa56-e6e5c7ccb86b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T08:57:02Z
  text: {"copyright_id":"0x32c6c8f879c0fa309572f6052d60f48e3d7180448c4617c77957f3e5c280ecb4","name":"Jack Purvis","registered_at":"2026-06-20T07:58:41Z","symbol":"NIM1562812","token_address":"0x6b93db634441eae36a91b697ecb490272734c312","type":"artist","uuid":"a7c88fd3-9578-4565-aa56-e6e5c7ccb86b"}
album: Jazz Essentials
  type: MusicAlbum
  date published: 2010-06-01
album: Jack Purvis 1928-1935
  type: MusicAlbum
  date published: 2020-01-29
  track: Mysterious Mose
    type: MusicRecording
    duration: PT2M57S
    duration ms: 177586
    explicit: false
    by artist: Jack Purvis
    in album: Jack Purvis 1928-1935
      type: MusicAlbum
      date published: 2020-01-29
    isrc code: GBBMR2083527
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T06:40:51+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xca4a60111ecc2e284058c4dc0f118451666b08f81117e038f3fc82788154efea
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956634
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956634
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBMR2083527
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T10:04:33Z
    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 0xca4a60111ecc2e284058c4dc0f118451666b08f81117e038f3fc82788154efea. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBBMR2083527.
      date published: 2026-07-04T10:04:33Z
    audio: Mysterious Mose
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 113.9
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.784
      additional property: Energy
        type: PropertyValue
        value: 0.299
      additional property: Speechiness
        type: PropertyValue
        value: 0.083
      additional property: Acousticness
        type: PropertyValue
        value: 0.962
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.361
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.751
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.173
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Minor
  track: Mental Strain at Dawn
    type: MusicRecording
    duration: PT2M49S
    duration ms: 169893
    explicit: false
    by artist: Jack Purvis
    in album: Jack Purvis 1928-1935
      type: MusicAlbum
      date published: 2020-01-29
    isrc code: GBBMR2083515
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T01:13:22+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x75faeffb76de7f6e68538acdeb9306bf85f71c2af30aee987b6d72c52f8b1c25
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956634
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956634
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBMR2083515
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T10:04:33Z
    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 0x75faeffb76de7f6e68538acdeb9306bf85f71c2af30aee987b6d72c52f8b1c25. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBBMR2083515.
      date published: 2026-07-04T10:04:33Z
    audio: Mental Strain at Dawn
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 139.062
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.771
      additional property: Energy
        type: PropertyValue
        value: 0.634
      additional property: Speechiness
        type: PropertyValue
        value: 0.066
      additional property: Acousticness
        type: PropertyValue
        value: 0.793
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.87
      additional property: Liveness
        type: PropertyValue
        value: 0.068
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Wild Reputation
album: Purvis St. Sounds, Collected

Valence (Positivity)
type: PropertyValue
value: 0.902

Loudness (dB)
type: PropertyValue
value: -11.242

Key Name
type: PropertyValue
value: F

Mode Name
type: PropertyValue
value: Major

Wild Reputation
type: MusicAlbum
date published: 2021-06-18

Purvis St. Sounds, Collected
type: MusicAlbum
date published: 2024-01-11