Impure Wilhelmina
type: MusicGroup
genre: sludge metal
popularity: 7
followers: 4461
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbbcdfd72a88ab15c84bec0f179be548f4950a52042fbbe01cfc787d0eea23e76
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954513
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9f9d3813-73fa-4f5e-af16-72f7d18fee67.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9f9d3813-73fa-4f5e-af16-72f7d18fee67.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9f9d3813-73fa-4f5e-af16-72f7d18fee67
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T06:31:18Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbbcdfd72a88ab15c84bec0f179be548f4950a52042fbbe01cfc787d0eea23e76","name":"Impure Wilhelmina","registered_at":"2026-06-20T05:11:33Z","symbol":"NIM1522542","token_address":"0xc29c95c5882c936c8d955d396f26c946b6dee12f","type":"artist","uuid":"9f9d3813-73fa-4f5e-af16-72f7d18fee67"}
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 0xbbcdfd72a88ab15c84bec0f179be548f4950a52042fbbe01cfc787d0eea23e76. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9f9d3813-73fa-4f5e-af16-72f7d18fee67.json and https://artists.proofprofile.net/proofs/artist/9f9d3813-73fa-4f5e-af16-72f7d18fee67.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T06:31:18Z
  text: {"copyright_id":"0xbbcdfd72a88ab15c84bec0f179be548f4950a52042fbbe01cfc787d0eea23e76","name":"Impure Wilhelmina","registered_at":"2026-06-20T05:11:33Z","symbol":"NIM1522542","token_address":"0xc29c95c5882c936c8d955d396f26c946b6dee12f","type":"artist","uuid":"9f9d3813-73fa-4f5e-af16-72f7d18fee67"}
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