Heike Harfmann
type: MusicGroup
popularity: 7
followers: 678
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x86f8939345de3f40a1ec03486996631ab3469f53b4a62d86c04cce99dad6f21a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953864
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953864
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/043ed677-0829-49fc-9a70-4e56fe41a362.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/043ed677-0829-49fc-9a70-4e56fe41a362.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/043ed677-0829-49fc-9a70-4e56fe41a362
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T00:30:31Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x86f8939345de3f40a1ec03486996631ab3469f53b4a62d86c04cce99dad6f21a","name":"Heike Harfmann","registered_at":"2026-06-15T15:06:19Z","symbol":"NIM0746030","token_address":"0xf71d6e82e8453c74fd807e993860015ab97c7a10","type":"artist","uuid":"043ed677-0829-49fc-9a70-4e56fe41a362"}
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 0x86f8939345de3f40a1ec03486996631ab3469f53b4a62d86c04cce99dad6f21a. Chain 2 (Bitcoin): anchored in block 953864 (2026-06-16T00:30:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/043ed677-0829-49fc-9a70-4e56fe41a362.json and https://artists.proofprofile.net/proofs/artist/043ed677-0829-49fc-9a70-4e56fe41a362.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-16T00:30:31Z
  text: {"copyright_id":"0x86f8939345de3f40a1ec03486996631ab3469f53b4a62d86c04cce99dad6f21a","name":"Heike Harfmann","registered_at":"2026-06-15T15:06:19Z","symbol":"NIM0746030","token_address":"0xf71d6e82e8453c74fd807e993860015ab97c7a10","type":"artist","uuid":"043ed677-0829-49fc-9a70-4e56fe41a362"}
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