Thomas Hellberg
type: MusicGroup
description: Björn Thomas Hellberg (29 September 1941 – 22 January 2023) was a Swedish actor, director and screenwriter. He graduated from the Malmö Theatre Academy in 1968. His film debut was Maria (1975).BFI.or
popularity: 9
followers: 111
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc2a3c001ceb48491b1b08b51779b891270be6e366e7e2b936bab8c998c0d8ec1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954533
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954533
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a373951b-c984-4b01-af2c-6fb059ce7758.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a373951b-c984-4b01-af2c-6fb059ce7758.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a373951b-c984-4b01-af2c-6fb059ce7758
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T08:57:02Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc2a3c001ceb48491b1b08b51779b891270be6e366e7e2b936bab8c998c0d8ec1","name":"Thomas Hellberg","registered_at":"2026-06-20T06:22:58Z","symbol":"NIM1539337","token_address":"0x5b8ac8cb3d8263b4b6bc3820db6c8c37a522c187","type":"artist","uuid":"a373951b-c984-4b01-af2c-6fb059ce7758"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a3c001ceb48491b1b08b51779b891270be6e366e7e2b936bab8c998c0d8ec1. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a373951b-c984-4b01-af2c-6fb059ce7758.json and https://artists.proofprofile.net/proofs/artist/a373951b-c984-4b01-af2c-6fb059ce7758.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T08:57:02Z
  text: {"copyright_id":"0xc2a3c001ceb48491b1b08b51779b891270be6e366e7e2b936bab8c998c0d8ec1","name":"Thomas Hellberg","registered_at":"2026-06-20T06:22:58Z","symbol":"NIM1539337","token_address":"0x5b8ac8cb3d8263b4b6bc3820db6c8c37a522c187","type":"artist","uuid":"a373951b-c984-4b01-af2c-6fb059ce7758"}