John Larkin
type: MusicGroup
genre: vocal jazz
description: John Larkin may refer to: Businessmen and public officials John Larkin (Northern Ireland), Attorney General for Northern Ireland as of May 2, 2020 John D. Larkin (1845–1926), American businessman Joh
popularity: 4
followers: 860
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSVerifyInstructions
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  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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be75020f17778f2375a5f9179b4537b422abbca4c3592bf0ca418aa7c25f20d. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6fb5111d-b89d-43ab-ac2d-8c8eb37d6c63.json and https://artists.proofprofile.net/proofs/artist/6fb5111d-b89d-43ab-ac2d-8c8eb37d6c63.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
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album: Listen To The Scatman: The Jazz Vocal/Piano Of John Larkin
  type: MusicAlbum
  date published: 2001
album: Listen to the Scatman: The Jazz Vocal/Piano of John Larkin
  type: MusicAlbum
  date published: 2001-08-21
album: Gathering Strength
  type: MusicAlbum
  date published: 2007-03-08
album: Perry Mason - Old Time Radio Show, Vol. Two
  type: MusicAlbum
  date published: 2011
album: Perry Mason - Old Time Radio Show, Vol. One
  type: MusicAlbum
  date published: 2011
track: So What
  type: MusicRecording
  duration: PT5M24S
  duration ms: 324243
  explicit: false
  by artist: John Larkin
  in album: Stunt Goes Miles Davis
    type: MusicAlbum
    date published: 2005
  isrc code: USA370674068
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  additional property: OTSTimestamp
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  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
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2358219ff9a330820c2771393d9a41174bf08e4f9e6c4c8c3150e81e389ddd8. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/USA370674068.
    date published: 2026-07-30T00:53:20Z
  audio: So What
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
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    additional property: Danceability
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    additional property: Speechiness
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Liveness
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      value: 0.126
    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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    additional property: Key Name
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      value: D
    additional property: Mode Name
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