Tjeerd Henstra
type: MusicGroup
popularity: 2
followers: 127
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5e9724c5b67818c41c0a3e454ee78dfd8b3c3e4d56f0952a59c6ca967c53090c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954028
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954028
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/39bd2671-980a-4864-a74d-3b79a33e4092.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/39bd2671-980a-4864-a74d-3b79a33e4092.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/39bd2671-980a-4864-a74d-3b79a33e4092
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T01:08:06Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5e9724c5b67818c41c0a3e454ee78dfd8b3c3e4d56f0952a59c6ca967c53090c","name":"Tjeerd Henstra","registered_at":"2026-06-16T09:39:36Z","symbol":"NIM1011779","token_address":"0x8e78e9e28fb5f2598ae96c01a83fa75f9e0e4368","type":"artist","uuid":"39bd2671-980a-4864-a74d-3b79a33e4092"}
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 0x5e9724c5b67818c41c0a3e454ee78dfd8b3c3e4d56f0952a59c6ca967c53090c. Chain 2 (Bitcoin): anchored in block 954028 (2026-06-17T01:08:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/39bd2671-980a-4864-a74d-3b79a33e4092.json and https://artists.proofprofile.net/proofs/artist/39bd2671-980a-4864-a74d-3b79a33e4092.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T01:08:06Z
  text: {"copyright_id":"0x5e9724c5b67818c41c0a3e454ee78dfd8b3c3e4d56f0952a59c6ca967c53090c","name":"Tjeerd Henstra","registered_at":"2026-06-16T09:39:36Z","symbol":"NIM1011779","token_address":"0x8e78e9e28fb5f2598ae96c01a83fa75f9e0e4368","type":"artist","uuid":"39bd2671-980a-4864-a74d-3b79a33e4092"}
album: In De Wolken
  type: MusicAlbum
  date published: 2021-07-02
album: De Zwie Zwa Zwabber
  type: MusicAlbum
  date published: 2022-03-25