Matt Garrison
type: MusicGroup
genre: free jazz
genre: jazz
description: thumb|260px|Denmark 2009 Photo Hreinn Gudlaugsson Matthew Justin Garrison (born June 2, 1970) is an American jazz bassist. Since 2011, he has run ShapeShifter Lab in Brooklyn, New York, with Fortuna
popularity: 9
followers: 700
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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
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track: Full Plate
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  by artist: Steve Hunt
  by artist: Matt Garrison
  by artist: Tom Brechtlein
  by artist: Eric Marienthal
  by artist: Ricardo Monzon
  in album: Connections
    type: MusicAlbum
    date published: 2021-01-25
  genre: deep-jazz-fusion
  isrc code: USJAV2110008
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    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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    date published: 2026-07-08T03:20:19Z
  audio: Full Plate
    type: AudioObject
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