Stefan Petzén
type: MusicGroup
genre: neofolk
genre: swedish ballads
popularity: 2
followers: 56
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8f43daaba927ce83228d1eeb535ba1f507713547cdf99328cd617a49da46f959
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/ce477727-45c6-467e-bb1e-a4c02c2c0721.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ce477727-45c6-467e-bb1e-a4c02c2c0721.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ce477727-45c6-467e-bb1e-a4c02c2c0721
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T02:46:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8f43daaba927ce83228d1eeb535ba1f507713547cdf99328cd617a49da46f959","name":"Stefan Petzén","registered_at":"2026-06-21T00:06:46Z","symbol":"NIM1756510","token_address":"0x32d4357364da2de5819e4f0c9a4c94308ab5168b","type":"artist","uuid":"ce477727-45c6-467e-bb1e-a4c02c2c0721"}
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 0x8f43daaba927ce83228d1eeb535ba1f507713547cdf99328cd617a49da46f959. 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/ce477727-45c6-467e-bb1e-a4c02c2c0721.json and https://artists.proofprofile.net/proofs/artist/ce477727-45c6-467e-bb1e-a4c02c2c0721.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T02:46:24Z
  text: {"copyright_id":"0x8f43daaba927ce83228d1eeb535ba1f507713547cdf99328cd617a49da46f959","name":"Stefan Petzén","registered_at":"2026-06-21T00:06:46Z","symbol":"NIM1756510","token_address":"0x32d4357364da2de5819e4f0c9a4c94308ab5168b","type":"artist","uuid":"ce477727-45c6-467e-bb1e-a4c02c2c0721"}
album: Sketches of Fancy
  type: MusicAlbum
  date published: 1993-10-15
album: Små saker
  type: MusicAlbum
  date published: 1997
album: Stjärna över haven
  type: MusicAlbum
  date published: 2006
album: Landskapsbilder
  type: MusicAlbum
  date published: 2013-01-20
album: Mellan himmel och hav
  type: MusicAlbum
  date published: 2013-01-20
album: Landskapsbilder 2
  type: MusicAlbum
  date published: 2013-01-20
album: Jul i Halland
  type: MusicAlbum
  date published: 2013-02-12
album: Måsvind, saltvind, blås, blås!
  type: MusicAlbum
  date published: 2024-02-03