Guy Van Duser
type: MusicGroup
genre: ragtime
description: Guy Van Duser (born September 25, 1948) is an American jazz and folk guitarist. He recorded for Rounder from the 1970s to the 1990s and often appeared on the radio show A Prairie Home Companion. His
popularity: 4
followers: 509
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x03c417ee907642861310d8316b2c58edd802c2b3ad21f2f81af551c1b1dc52b8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/54ab1573-d193-4a8e-bed1-0899b14fcd6f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/54ab1573-d193-4a8e-bed1-0899b14fcd6f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/54ab1573-d193-4a8e-bed1-0899b14fcd6f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x03c417ee907642861310d8316b2c58edd802c2b3ad21f2f81af551c1b1dc52b8","name":"Guy Van Duser","registered_at":"2026-06-16T19:13:59Z","symbol":"NIM1148825","token_address":"0xbf676cd72f58d3e3914f949f59f9a491c1f33bb2","type":"artist","uuid":"54ab1573-d193-4a8e-bed1-0899b14fcd6f"}
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 0x03c417ee907642861310d8316b2c58edd802c2b3ad21f2f81af551c1b1dc52b8. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/54ab1573-d193-4a8e-bed1-0899b14fcd6f.json and https://artists.proofprofile.net/proofs/artist/54ab1573-d193-4a8e-bed1-0899b14fcd6f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x03c417ee907642861310d8316b2c58edd802c2b3ad21f2f81af551c1b1dc52b8","name":"Guy Van Duser","registered_at":"2026-06-16T19:13:59Z","symbol":"NIM1148825","token_address":"0xbf676cd72f58d3e3914f949f59f9a491c1f33bb2","type":"artist","uuid":"54ab1573-d193-4a8e-bed1-0899b14fcd6f"}
album: American Finger Style Guitar
  type: MusicAlbum
  date published: 1987-01-01
album: American Finger Style Guitar
  type: MusicAlbum
  date published: 1987-01-01
album: Exactly Like Us
  type: MusicAlbum
  date published: 1989-01-01
album: A Session With Guy Van Duser
  type: MusicAlbum
  date published: 2012-03-23
album: You Don't Know Me
  type: MusicAlbum
  date published: 2013-12-02
album: Sleigh Ride
  type: MusicAlbum
  date published: 2016-12-02
album: A String of Pearls
  type: MusicAlbum
  date published: 2019-01-08
album: Katja
  type: MusicAlbum
  date published: 2019-01-08
album: best of guy van duser and billy novick
  type: MusicAlbum
  date published: 2022-09-02