Bert Boeren
type: MusicGroup
genre: french jazz
genre: vocal jazz
description: Bert Boeren (born March 11, 1962) is a Dutch jazz trombonist and educator. Early life and education Boeren was born in Vught, Netherlands, on March 11, 1962. He took up the trombone at the age of 16
popularity: 2
followers: 63
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x330bf125862df1e0311cdae5a73dbd8c409e869d0f06ebd0a690d0e88e71535b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953857
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953857
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/02340f61-a58e-41a0-bfcd-af20b7da4fa7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/02340f61-a58e-41a0-bfcd-af20b7da4fa7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/02340f61-a58e-41a0-bfcd-af20b7da4fa7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T23:34:38Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x330bf125862df1e0311cdae5a73dbd8c409e869d0f06ebd0a690d0e88e71535b","name":"Bert Boeren","registered_at":"2026-06-15T14:26:22Z","symbol":"NIM0736497","token_address":"0x600989537275689c654e821bd934beebaa91ddca","type":"artist","uuid":"02340f61-a58e-41a0-bfcd-af20b7da4fa7"}
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 0x330bf125862df1e0311cdae5a73dbd8c409e869d0f06ebd0a690d0e88e71535b. Chain 2 (Bitcoin): anchored in block 953857 (2026-06-15T23:34:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/02340f61-a58e-41a0-bfcd-af20b7da4fa7.json and https://artists.proofprofile.net/proofs/artist/02340f61-a58e-41a0-bfcd-af20b7da4fa7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T23:34:38Z
  text: {"copyright_id":"0x330bf125862df1e0311cdae5a73dbd8c409e869d0f06ebd0a690d0e88e71535b","name":"Bert Boeren","registered_at":"2026-06-15T14:26:22Z","symbol":"NIM0736497","token_address":"0x600989537275689c654e821bd934beebaa91ddca","type":"artist","uuid":"02340f61-a58e-41a0-bfcd-af20b7da4fa7"}