Björn Nonnweiler
type: MusicGroup
genre: singer-songwriter
popularity: 3
followers: 190
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x85f6e1524a3f5f837e7929185c835542ccde9c046137c3b0314cad28c290236b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954573
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954573
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b49831e1-849e-472d-a1b4-54073033416c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b49831e1-849e-472d-a1b4-54073033416c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b49831e1-849e-472d-a1b4-54073033416c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T15:45:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x85f6e1524a3f5f837e7929185c835542ccde9c046137c3b0314cad28c290236b","name":"Björn Nonnweiler","registered_at":"2026-06-20T14:04:00Z","symbol":"NIM1627149","token_address":"0xad633dc6a222847fcbb17dfe47c453546ec9da31","type":"artist","uuid":"b49831e1-849e-472d-a1b4-54073033416c"}
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 0x85f6e1524a3f5f837e7929185c835542ccde9c046137c3b0314cad28c290236b. Chain 2 (Bitcoin): anchored in block 954573 (2026-06-20T15:45:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b49831e1-849e-472d-a1b4-54073033416c.json and https://artists.proofprofile.net/proofs/artist/b49831e1-849e-472d-a1b4-54073033416c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T15:45:29Z
  text: {"copyright_id":"0x85f6e1524a3f5f837e7929185c835542ccde9c046137c3b0314cad28c290236b","name":"Björn Nonnweiler","registered_at":"2026-06-20T14:04:00Z","symbol":"NIM1627149","token_address":"0xad633dc6a222847fcbb17dfe47c453546ec9da31","type":"artist","uuid":"b49831e1-849e-472d-a1b4-54073033416c"}
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