Björn Jensen
type: MusicGroup
description: thumb|right|Björn Jensen at the Munich Filmfest 2010 Björn Jensen (born 12 January 1965 in Hameln, Germany) is a German filmmaker, consultant and producer. Career Jensen studied German and Medieval L
popularity: 2
followers: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xff09bb85d69dbb2a469bcf4538121a6639be8d2b3883c0475961fee783f2ad79
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954002
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954002
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/329cc070-9535-4c13-a28f-051e3e5808e0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/329cc070-9535-4c13-a28f-051e3e5808e0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/329cc070-9535-4c13-a28f-051e3e5808e0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T20:47:12Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xff09bb85d69dbb2a469bcf4538121a6639be8d2b3883c0475961fee783f2ad79","name":"Björn Jensen","registered_at":"2026-06-16T07:10:23Z","symbol":"NIM0976163","token_address":"0xfb7deef8870154a030e94b450a78b469096e996f","type":"artist","uuid":"329cc070-9535-4c13-a28f-051e3e5808e0"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff09bb85d69dbb2a469bcf4538121a6639be8d2b3883c0475961fee783f2ad79. Chain 2 (Bitcoin): anchored in block 954002 (2026-06-16T20:47:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/329cc070-9535-4c13-a28f-051e3e5808e0.json and https://artists.proofprofile.net/proofs/artist/329cc070-9535-4c13-a28f-051e3e5808e0.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-16T20:47:12Z
  text: {"copyright_id":"0xff09bb85d69dbb2a469bcf4538121a6639be8d2b3883c0475961fee783f2ad79","name":"Björn Jensen","registered_at":"2026-06-16T07:10:23Z","symbol":"NIM0976163","token_address":"0xfb7deef8870154a030e94b450a78b469096e996f","type":"artist","uuid":"329cc070-9535-4c13-a28f-051e3e5808e0"}