Matthijs Verschoor
type: MusicGroup
genre: chamber music
description: Matthijs Verschoor (born 1955) is a Dutch classical pianist. He grew up in EnkhuizenConcert program (in Dutch) and studied at the conservatories of Rotterdam and Amsterdam and continued his studies
popularity: 3
followers: 37
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xacbc78b59ac56e47f434c559a1f14f6e43d9e1ae0cb72e81d6035fdf527b7a26
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954097
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954097
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7b3a9124-abda-48b0-94cb-38ddd5007907.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7b3a9124-abda-48b0-94cb-38ddd5007907.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7b3a9124-abda-48b0-94cb-38ddd5007907
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T13:13:51Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xacbc78b59ac56e47f434c559a1f14f6e43d9e1ae0cb72e81d6035fdf527b7a26","name":"Matthijs Verschoor","registered_at":"2026-06-17T08:33:51Z","symbol":"NIM1339641","token_address":"0xe6835dc8b893ed6c24ad3d0ce68d68ab8a037e1e","type":"artist","uuid":"7b3a9124-abda-48b0-94cb-38ddd5007907"}
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 0xacbc78b59ac56e47f434c559a1f14f6e43d9e1ae0cb72e81d6035fdf527b7a26. Chain 2 (Bitcoin): anchored in block 954115 (2026-06-17T15:44:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b3a9124-abda-48b0-94cb-38ddd5007907.json and https://artists.proofprofile.net/proofs/artist/7b3a9124-abda-48b0-94cb-38ddd5007907.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T15:44:10Z
  text: {"copyright_id":"0xacbc78b59ac56e47f434c559a1f14f6e43d9e1ae0cb72e81d6035fdf527b7a26","name":"Matthijs Verschoor","registered_at":"2026-06-17T08:33:51Z","symbol":"NIM1339641","token_address":"0xe6835dc8b893ed6c24ad3d0ce68d68ab8a037e1e","type":"artist","uuid":"7b3a9124-abda-48b0-94cb-38ddd5007907"}