Helmut Baumann
type: MusicGroup
popularity: 8
followers: 27
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4ffba6419aaf6fbb3a2ba13d4683251e883308d4f567d33f88ec46e168536bcc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953976
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953976
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2bc890eb-d5b1-4020-b8ae-2265d2ca1f70.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2bc890eb-d5b1-4020-b8ae-2265d2ca1f70.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2bc890eb-d5b1-4020-b8ae-2265d2ca1f70
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T16:55:36Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4ffba6419aaf6fbb3a2ba13d4683251e883308d4f567d33f88ec46e168536bcc","name":"Helmut Baumann","registered_at":"2026-06-16T04:46:38Z","symbol":"NIM0941823","token_address":"0xcb5eb05cb111b8f22beb63607f2925274a16de36","type":"artist","uuid":"2bc890eb-d5b1-4020-b8ae-2265d2ca1f70"}
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 0x4ffba6419aaf6fbb3a2ba13d4683251e883308d4f567d33f88ec46e168536bcc. Chain 2 (Bitcoin): anchored in block 953978 (2026-06-16T17:11:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2bc890eb-d5b1-4020-b8ae-2265d2ca1f70.json and https://artists.proofprofile.net/proofs/artist/2bc890eb-d5b1-4020-b8ae-2265d2ca1f70.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T17:11:18Z
  text: {"copyright_id":"0x4ffba6419aaf6fbb3a2ba13d4683251e883308d4f567d33f88ec46e168536bcc","name":"Helmut Baumann","registered_at":"2026-06-16T04:46:38Z","symbol":"NIM0941823","token_address":"0xcb5eb05cb111b8f22beb63607f2925274a16de36","type":"artist","uuid":"2bc890eb-d5b1-4020-b8ae-2265d2ca1f70"}