Helge Lilletvedt
type: MusicGroup
description: Helge Lilletvedt (born 13 June 1964 in Bergen, Norway) is a Norwegian jazz pianist, keyboardist, composer and arranger, known from collaborations and album releases with Herborg Kråkevik, Anne Dorte M
popularity: 2
followers: 3
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf2609a87b43b011e45252d7a87f4876133e56d6e36209d8c14cb75b970ea5f87
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953923
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953923
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1c0607d1-2e6b-47af-8988-48a5becb8b9a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1c0607d1-2e6b-47af-8988-48a5becb8b9a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1c0607d1-2e6b-47af-8988-48a5becb8b9a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T09:51:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf2609a87b43b011e45252d7a87f4876133e56d6e36209d8c14cb75b970ea5f87","name":"Helge Lilletvedt","registered_at":"2026-06-15T23:34:05Z","symbol":"NIM0867186","token_address":"0xa9604231394842dbece43235e3446f1e2c236b42","type":"artist","uuid":"1c0607d1-2e6b-47af-8988-48a5becb8b9a"}
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 0xf2609a87b43b011e45252d7a87f4876133e56d6e36209d8c14cb75b970ea5f87. Chain 2 (Bitcoin): anchored in block 953924 (2026-06-16T09:52:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1c0607d1-2e6b-47af-8988-48a5becb8b9a.json and https://artists.proofprofile.net/proofs/artist/1c0607d1-2e6b-47af-8988-48a5becb8b9a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T09:52:28Z
  text: {"copyright_id":"0xf2609a87b43b011e45252d7a87f4876133e56d6e36209d8c14cb75b970ea5f87","name":"Helge Lilletvedt","registered_at":"2026-06-15T23:34:05Z","symbol":"NIM0867186","token_address":"0xa9604231394842dbece43235e3446f1e2c236b42","type":"artist","uuid":"1c0607d1-2e6b-47af-8988-48a5becb8b9a"}