Han De Vries
type: MusicGroup
description: Han Samuel de Vries (born 31 August 1941, The Hague), is a Dutch oboist and is considered the doyen of the Dutch school of oboe playing. He studied oboe with Jaap Stotijn at the Royal Conservatory of
popularity: 4
followers: 6
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xaf7465f696b9a3d7253d191174d84a2ac96a8782b8abc8001234b8e3372572db
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/4e88d247-4471-42d0-a8fd-17a8b8b782ac.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4e88d247-4471-42d0-a8fd-17a8b8b782ac.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4e88d247-4471-42d0-a8fd-17a8b8b782ac
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xaf7465f696b9a3d7253d191174d84a2ac96a8782b8abc8001234b8e3372572db","name":"Han De Vries","registered_at":"2026-06-16T16:55:45Z","symbol":"NIM1115827","token_address":"0xccedcc4fb5c39084753130014789054b55c9f0ec","type":"artist","uuid":"4e88d247-4471-42d0-a8fd-17a8b8b782ac"}
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 0xaf7465f696b9a3d7253d191174d84a2ac96a8782b8abc8001234b8e3372572db. 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/4e88d247-4471-42d0-a8fd-17a8b8b782ac.json and https://artists.proofprofile.net/proofs/artist/4e88d247-4471-42d0-a8fd-17a8b8b782ac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0xaf7465f696b9a3d7253d191174d84a2ac96a8782b8abc8001234b8e3372572db","name":"Han De Vries","registered_at":"2026-06-16T16:55:45Z","symbol":"NIM1115827","token_address":"0xccedcc4fb5c39084753130014789054b55c9f0ec","type":"artist","uuid":"4e88d247-4471-42d0-a8fd-17a8b8b782ac"}
album: The Very Best of Han de Vries
  type: MusicAlbum
  date published: 2012-09-21