Han Bennink
type: MusicGroup
genre: avant-garde
genre: free jazz
description: Han Bennink (born 17 April 1942) is a Dutch drummer and percussionist. On occasion his recordings have featured him playing soprano saxophone, bass clarinet, trombone, violin, banjo and piano. Though
popularity: 11
followers: 2739
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2380a41315efe3887f134fd635f8f0e5476ae75b08de923fd79b4454bda5428d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953778
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953778
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ccbc2254-0a20-4813-9245-ce377a50ef43.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ccbc2254-0a20-4813-9245-ce377a50ef43.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ccbc2254-0a20-4813-9245-ce377a50ef43
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T11:57:35Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2380a41315efe3887f134fd635f8f0e5476ae75b08de923fd79b4454bda5428d","name":"Han Bennink","registered_at":"2026-06-15T02:08:42Z","symbol":"NIM0648755","token_address":"0xb1239f7cda1117deccb9dc5cca35a7172853c39b","type":"artist","uuid":"ccbc2254-0a20-4813-9245-ce377a50ef43"}
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 0x2380a41315efe3887f134fd635f8f0e5476ae75b08de923fd79b4454bda5428d. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ccbc2254-0a20-4813-9245-ce377a50ef43.json and https://artists.proofprofile.net/proofs/artist/ccbc2254-0a20-4813-9245-ce377a50ef43.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T11:57:35Z
  text: {"copyright_id":"0x2380a41315efe3887f134fd635f8f0e5476ae75b08de923fd79b4454bda5428d","name":"Han Bennink","registered_at":"2026-06-15T02:08:42Z","symbol":"NIM0648755","token_address":"0xb1239f7cda1117deccb9dc5cca35a7172853c39b","type":"artist","uuid":"ccbc2254-0a20-4813-9245-ce377a50ef43"}
album: Dissonant Characters
  type: MusicAlbum
  date published: 1999-01-01