Heikki Lindgren
type: MusicGroup
genre: ambient
genre: dark ambient
genre: drone
genre: space music
popularity: 6
followers: 105
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa2b4e9b26addde848d6994d35b7c753af39cb14aeb32f3a174733cdfdc78160c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953932
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953932
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1f32b675-01d3-478f-a56a-b8f69bc0117a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1f32b675-01d3-478f-a56a-b8f69bc0117a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1f32b675-01d3-478f-a56a-b8f69bc0117a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T11:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa2b4e9b26addde848d6994d35b7c753af39cb14aeb32f3a174733cdfdc78160c","name":"Heikki Lindgren","registered_at":"2026-06-16T00:25:40Z","symbol":"NIM0879495","token_address":"0x80a0c59330ac330f13413d7fc44cda35206230c9","type":"artist","uuid":"1f32b675-01d3-478f-a56a-b8f69bc0117a"}
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 0xa2b4e9b26addde848d6994d35b7c753af39cb14aeb32f3a174733cdfdc78160c. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1f32b675-01d3-478f-a56a-b8f69bc0117a.json and https://artists.proofprofile.net/proofs/artist/1f32b675-01d3-478f-a56a-b8f69bc0117a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
  text: {"copyright_id":"0xa2b4e9b26addde848d6994d35b7c753af39cb14aeb32f3a174733cdfdc78160c","name":"Heikki Lindgren","registered_at":"2026-06-16T00:25:40Z","symbol":"NIM0879495","token_address":"0x80a0c59330ac330f13413d7fc44cda35206230c9","type":"artist","uuid":"1f32b675-01d3-478f-a56a-b8f69bc0117a"}
album: Ambient Experimentations: Archipelago Recordings with Gong
  type: MusicAlbum
  date published: 2020-04-03
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  type: MusicAlbum
  date published: 2020-10-27
album: Kantele Voices
  type: MusicAlbum
  date published: 2024-01-12
album: Abiogenesis
  type: MusicAlbum
  date published: 2024-04-11