Per Nilsson
type: MusicGroup
description: Per Nilsson may refer to: Per Nilsson (gymnast) (1890–1964), Swedish gymnast Per Nilsson (footballer) (born 1982), Swedish football (soccer) player Per Nilsson (guitarist) in the bands Scar Symmetry
popularity: 2
followers: 1
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xca09d95b507640faf286d687499331560c4963c4fbddcf7772184c64b8e8b2a4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954500
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954500
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9c15de6b-9e19-483f-97a7-8d030935ddfa.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9c15de6b-9e19-483f-97a7-8d030935ddfa.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9c15de6b-9e19-483f-97a7-8d030935ddfa
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T04:47:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xca09d95b507640faf286d687499331560c4963c4fbddcf7772184c64b8e8b2a4","name":"Per Nilsson","registered_at":"2026-06-20T03:59:03Z","symbol":"NIM1505264","token_address":"0xee4ba6833aeb803e3ac156cbe169d3473d664792","type":"artist","uuid":"9c15de6b-9e19-483f-97a7-8d030935ddfa"}
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 0xca09d95b507640faf286d687499331560c4963c4fbddcf7772184c64b8e8b2a4. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c15de6b-9e19-483f-97a7-8d030935ddfa.json and https://artists.proofprofile.net/proofs/artist/9c15de6b-9e19-483f-97a7-8d030935ddfa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T04:47:29Z
  text: {"copyright_id":"0xca09d95b507640faf286d687499331560c4963c4fbddcf7772184c64b8e8b2a4","name":"Per Nilsson","registered_at":"2026-06-20T03:59:03Z","symbol":"NIM1505264","token_address":"0xee4ba6833aeb803e3ac156cbe169d3473d664792","type":"artist","uuid":"9c15de6b-9e19-483f-97a7-8d030935ddfa"}