Per Nilsen
type: MusicGroup
description: Per Nilsen (born April 8, 1960) is a Swedish professor and author. He grew up in Täby, north of Stockholm. Nilsen graduated in economics at the Stockholm School of Economics in 1985. He has written su
popularity: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4d4fb0565cb515dd9798eabbad4fe9658f969bfdd6b94801b0019663731ad560
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954631
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954631
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d17e1bbc-294b-4ced-a877-68a24ad90e2e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d17e1bbc-294b-4ced-a877-68a24ad90e2e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d17e1bbc-294b-4ced-a877-68a24ad90e2e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T02:46:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4d4fb0565cb515dd9798eabbad4fe9658f969bfdd6b94801b0019663731ad560","name":"Per Nilsen","registered_at":"2026-06-21T01:15:54Z","symbol":"NIM1774560","token_address":"0xc2d3121cbec07546711e5f2d7abdc0fcaeff74c3","type":"artist","uuid":"d17e1bbc-294b-4ced-a877-68a24ad90e2e"}
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 0x4d4fb0565cb515dd9798eabbad4fe9658f969bfdd6b94801b0019663731ad560. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d17e1bbc-294b-4ced-a877-68a24ad90e2e.json and https://artists.proofprofile.net/proofs/artist/d17e1bbc-294b-4ced-a877-68a24ad90e2e.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T02:46:24Z
  text: {"copyright_id":"0x4d4fb0565cb515dd9798eabbad4fe9658f969bfdd6b94801b0019663731ad560","name":"Per Nilsen","registered_at":"2026-06-21T01:15:54Z","symbol":"NIM1774560","token_address":"0xc2d3121cbec07546711e5f2d7abdc0fcaeff74c3","type":"artist","uuid":"d17e1bbc-294b-4ced-a877-68a24ad90e2e"}
album: Moonlight Highway
  type: MusicAlbum
  date published: 2025-10-01