Oliver Hartmann
type: MusicGroup
description: Oliver Hartmann (born 28 June 1970 in Rüsselsheim, West Germany) is a German heavy metal vocalist, guitarist, songwriter, and producer who performed in various acts, either as guitarist, solo or choir
popularity: 3
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xee3f9c72baf2b68d9ba9d0c37fbca37a32763313fa12cdc5d8ae6154ca4d14d5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ca02a2a7-5f05-45e6-a409-f843d4e4eea7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ca02a2a7-5f05-45e6-a409-f843d4e4eea7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ca02a2a7-5f05-45e6-a409-f843d4e4eea7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xee3f9c72baf2b68d9ba9d0c37fbca37a32763313fa12cdc5d8ae6154ca4d14d5","name":"Oliver Hartmann","registered_at":"2026-06-20T22:36:04Z","symbol":"NIM1736443","token_address":"0xbd8b331661f886bf175d5d49d67bfcd57e08df4a","type":"artist","uuid":"ca02a2a7-5f05-45e6-a409-f843d4e4eea7"}
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 0xee3f9c72baf2b68d9ba9d0c37fbca37a32763313fa12cdc5d8ae6154ca4d14d5. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ca02a2a7-5f05-45e6-a409-f843d4e4eea7.json and https://artists.proofprofile.net/proofs/artist/ca02a2a7-5f05-45e6-a409-f843d4e4eea7.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xee3f9c72baf2b68d9ba9d0c37fbca37a32763313fa12cdc5d8ae6154ca4d14d5","name":"Oliver Hartmann","registered_at":"2026-06-20T22:36:04Z","symbol":"NIM1736443","token_address":"0xbd8b331661f886bf175d5d49d67bfcd57e08df4a","type":"artist","uuid":"ca02a2a7-5f05-45e6-a409-f843d4e4eea7"}