Andreas Keller
type: MusicGroup
description: Andreas Keller (born 1 October 1965) is a former field hockey player from West Germany, who competed at three Summer Olympics for his native country. He won the gold medal with Germany at the 1992 Sum
popularity: 33
followers: 70
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1233fe2a1d5dedc08635a351d7066f2572d6377b35e4fc4169d564bc5aab672b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8f66a8ee-092f-4e32-bb57-c037f9df4b1f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8f66a8ee-092f-4e32-bb57-c037f9df4b1f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8f66a8ee-092f-4e32-bb57-c037f9df4b1f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1233fe2a1d5dedc08635a351d7066f2572d6377b35e4fc4169d564bc5aab672b","name":"Andreas Keller","registered_at":"2026-06-12T04:17:20Z","symbol":"NIM0184356","token_address":"0x972f3fbd55c1e80fba5d4ebadbdcf53018b27af9","type":"artist","uuid":"8f66a8ee-092f-4e32-bb57-c037f9df4b1f"}
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 0x1233fe2a1d5dedc08635a351d7066f2572d6377b35e4fc4169d564bc5aab672b. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8f66a8ee-092f-4e32-bb57-c037f9df4b1f.json and https://artists.proofprofile.net/proofs/artist/8f66a8ee-092f-4e32-bb57-c037f9df4b1f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x1233fe2a1d5dedc08635a351d7066f2572d6377b35e4fc4169d564bc5aab672b","name":"Andreas Keller","registered_at":"2026-06-12T04:17:20Z","symbol":"NIM0184356","token_address":"0x972f3fbd55c1e80fba5d4ebadbdcf53018b27af9","type":"artist","uuid":"8f66a8ee-092f-4e32-bb57-c037f9df4b1f"}