Matthias Helm
type: MusicGroup
popularity: 11
followers: 16
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2d736da0b607e8d007a6fc6ddd33ede3f6a57a93bd60ca202b92da28cd2f72b0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953724
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953724
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8ceb89fd-1044-4552-b9f7-ebf4c2a4349c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8ceb89fd-1044-4552-b9f7-ebf4c2a4349c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8ceb89fd-1044-4552-b9f7-ebf4c2a4349c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T01:43:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2d736da0b607e8d007a6fc6ddd33ede3f6a57a93bd60ca202b92da28cd2f72b0","name":"Matthias Helm","registered_at":"2026-06-14T19:17:57Z","symbol":"NIM0550695","token_address":"0x89f5c953c661c3bfb209b0fc01065bbc8427e568","type":"artist","uuid":"8ceb89fd-1044-4552-b9f7-ebf4c2a4349c"}
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 0x2d736da0b607e8d007a6fc6ddd33ede3f6a57a93bd60ca202b92da28cd2f72b0. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ceb89fd-1044-4552-b9f7-ebf4c2a4349c.json and https://artists.proofprofile.net/proofs/artist/8ceb89fd-1044-4552-b9f7-ebf4c2a4349c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T04:47:56Z
  text: {"copyright_id":"0x2d736da0b607e8d007a6fc6ddd33ede3f6a57a93bd60ca202b92da28cd2f72b0","name":"Matthias Helm","registered_at":"2026-06-14T19:17:57Z","symbol":"NIM0550695","token_address":"0x89f5c953c661c3bfb209b0fc01065bbc8427e568","type":"artist","uuid":"8ceb89fd-1044-4552-b9f7-ebf4c2a4349c"}