Peter Sjardin
type: MusicGroup
genre: acid rock
genre: krautrock
genre: nederpop
genre: psychedelic rock
genre: space rock
popularity: 6
followers: 199
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4c9ae2cd65d20584fb097b9ecf0b92b546a19e31fcdb93cce1ced9c7b4d90a36
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954555
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954555
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ad1dc6a3-3a95-497c-80a1-dcb549088b91.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ad1dc6a3-3a95-497c-80a1-dcb549088b91.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ad1dc6a3-3a95-497c-80a1-dcb549088b91
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T12:10:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4c9ae2cd65d20584fb097b9ecf0b92b546a19e31fcdb93cce1ced9c7b4d90a36","name":"Peter Sjardin","registered_at":"2026-06-20T10:48:15Z","symbol":"NIM1594786","token_address":"0x16120807ada43e56374b3cfb0f31bf20140653c3","type":"artist","uuid":"ad1dc6a3-3a95-497c-80a1-dcb549088b91"}
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 0x4c9ae2cd65d20584fb097b9ecf0b92b546a19e31fcdb93cce1ced9c7b4d90a36. Chain 2 (Bitcoin): anchored in block 954556 (2026-06-20T12:14:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ad1dc6a3-3a95-497c-80a1-dcb549088b91.json and https://artists.proofprofile.net/proofs/artist/ad1dc6a3-3a95-497c-80a1-dcb549088b91.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T12:14:15Z
  text: {"copyright_id":"0x4c9ae2cd65d20584fb097b9ecf0b92b546a19e31fcdb93cce1ced9c7b4d90a36","name":"Peter Sjardin","registered_at":"2026-06-20T10:48:15Z","symbol":"NIM1594786","token_address":"0x16120807ada43e56374b3cfb0f31bf20140653c3","type":"artist","uuid":"ad1dc6a3-3a95-497c-80a1-dcb549088b91"}
album: Misty Night (remastered)
  type: MusicAlbum
  date published: 1966-05-23
album: Paradise Now (expanded & remastered)
  type: MusicAlbum
  date published: 1969-11-26
album: Don't Let It Be (remastered)
  type: MusicAlbum
  date published: 1970-09-21
album: 1850 Live (expanded & remastered)
  type: MusicAlbum
  date published: 1975-03-29
album: Polyandri (expanded & remastered)
  type: MusicAlbum
  date published: 1975-04-29
album: Live On Tour (expanded & remastered)
  type: MusicAlbum
  date published: 1976-04-28
album: More Purple Sky (expanded & remastered)
  type: MusicAlbum
  date published: 2019-11-13
album: Changes (expanded & remastered)
  type: MusicAlbum
  date published: 2019-11-13