Eirik Tengroth
type: MusicGroup
popularity: 2
followers: 52
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf73d3ca02499366317d52992630aece4fcbab4804644011d22a978aa50355d80
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954705
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954705
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ed18c6c5-0181-4eb2-b09b-84e3c7ab552f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ed18c6c5-0181-4eb2-b09b-84e3c7ab552f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ed18c6c5-0181-4eb2-b09b-84e3c7ab552f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T13:42:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf73d3ca02499366317d52992630aece4fcbab4804644011d22a978aa50355d80","name":"Eirik Tengroth","registered_at":"2026-06-21T11:10:48Z","symbol":"NIM1907965","token_address":"0xe3759a886475d9d2b487021e8f443de099b02d53","type":"artist","uuid":"ed18c6c5-0181-4eb2-b09b-84e3c7ab552f"}
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 0xf73d3ca02499366317d52992630aece4fcbab4804644011d22a978aa50355d80. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ed18c6c5-0181-4eb2-b09b-84e3c7ab552f.json and https://artists.proofprofile.net/proofs/artist/ed18c6c5-0181-4eb2-b09b-84e3c7ab552f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T13:42:37Z
  text: {"copyright_id":"0xf73d3ca02499366317d52992630aece4fcbab4804644011d22a978aa50355d80","name":"Eirik Tengroth","registered_at":"2026-06-21T11:10:48Z","symbol":"NIM1907965","token_address":"0xe3759a886475d9d2b487021e8f443de099b02d53","type":"artist","uuid":"ed18c6c5-0181-4eb2-b09b-84e3c7ab552f"}
album: Woodlock
  type: MusicAlbum
  date published: 2023-02-09
album: Pear
  type: MusicAlbum
  date published: 2023-03-03
album: Norrsken
  type: MusicAlbum
  date published: 2023-03-31
album: Decision
  type: MusicAlbum
  date published: 2023-04-14
album: Stories
  type: MusicAlbum
  date published: 2023-04-28
album: Leaves from the Vine (From "The Last Airbender")
  type: MusicAlbum
  date published: 2023-05-19
album: Homesick
  type: MusicAlbum
  date published: 2023-06-02
album: Lonely
  type: MusicAlbum
  date published: 2023-06-16
album: Alex
  type: MusicAlbum
  date published: 2025-06-04