Matthias Hoffmann-Borggrefe
type: MusicGroup
popularity: 2
followers: 9
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x438624bd0c27754c3a07a2acd3f099f98cda5ac1ace5fb167fe51189eab827b2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954500
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954500
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9c32826b-4cf1-4287-837a-d1612e08e628.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9c32826b-4cf1-4287-837a-d1612e08e628.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9c32826b-4cf1-4287-837a-d1612e08e628
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T04:47:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x438624bd0c27754c3a07a2acd3f099f98cda5ac1ace5fb167fe51189eab827b2","name":"Matthias Hoffmann-Borggrefe","registered_at":"2026-06-20T03:59:59Z","symbol":"NIM1505597","token_address":"0xd74b58ca704922e1ef6fc4af8f8760aa74be48f0","type":"artist","uuid":"9c32826b-4cf1-4287-837a-d1612e08e628"}
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 0x438624bd0c27754c3a07a2acd3f099f98cda5ac1ace5fb167fe51189eab827b2. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c32826b-4cf1-4287-837a-d1612e08e628.json and https://artists.proofprofile.net/proofs/artist/9c32826b-4cf1-4287-837a-d1612e08e628.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T04:47:29Z
  text: {"copyright_id":"0x438624bd0c27754c3a07a2acd3f099f98cda5ac1ace5fb167fe51189eab827b2","name":"Matthias Hoffmann-Borggrefe","registered_at":"2026-06-20T03:59:59Z","symbol":"NIM1505597","token_address":"0xd74b58ca704922e1ef6fc4af8f8760aa74be48f0","type":"artist","uuid":"9c32826b-4cf1-4287-837a-d1612e08e628"}
album: Honegger: La Danse des Morts - Martin: Requiem
  type: MusicAlbum
  date published: 2012-09-04
album: Honegger: La Danse des Morts - Martin: Requiem
  type: MusicAlbum
  date published: 2012-09-04