Alfred Muff
type: MusicGroup
genre: opera
description: Alfred Muff (born 31 May 1949) is a Swiss operatic bass-baritone. Life and career Born in Lucerne, Muff studied at the Lucerne conservatory until he was introduced by its director Rudolf Baumgartne
popularity: 13
followers: 24
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x92c65f974a8f842bfbb4c7acbbfd87dbd079cbf375bff2d1cdd445b1271eee84
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953625
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953625
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2da4e6c0-7406-4053-a60c-3307208e59ff.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2da4e6c0-7406-4053-a60c-3307208e59ff.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2da4e6c0-7406-4053-a60c-3307208e59ff
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T11:37:06Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x92c65f974a8f842bfbb4c7acbbfd87dbd079cbf375bff2d1cdd445b1271eee84","name":"Alfred Muff","registered_at":"2026-06-14T09:11:21Z","symbol":"NIM0405998","token_address":"0xdb9ec8fbebdd0e983650d0a468a80491147f6ee8","type":"artist","uuid":"2da4e6c0-7406-4053-a60c-3307208e59ff"}
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 0x92c65f974a8f842bfbb4c7acbbfd87dbd079cbf375bff2d1cdd445b1271eee84. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2da4e6c0-7406-4053-a60c-3307208e59ff.json and https://artists.proofprofile.net/proofs/artist/2da4e6c0-7406-4053-a60c-3307208e59ff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T11:37:06Z
  text: {"copyright_id":"0x92c65f974a8f842bfbb4c7acbbfd87dbd079cbf375bff2d1cdd445b1271eee84","name":"Alfred Muff","registered_at":"2026-06-14T09:11:21Z","symbol":"NIM0405998","token_address":"0xdb9ec8fbebdd0e983650d0a468a80491147f6ee8","type":"artist","uuid":"2da4e6c0-7406-4053-a60c-3307208e59ff"}