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From trust +‎ -less.


trustless (not comparable)

  1. Lacking trust; untrusting.
  2. (computing, cryptocurrencies) Which does not need any trust, or a trusted third party.
    A trustless network can run even if none of its nodes trusts another.
    • 2019, Peter Kent, Tyler Bain, Cryptocurrency Mining For Dummies, John Wiley & Sons, →ISBN, page 30:
      In the trustless cryptocurrency world, you can still trust the cryptocurrency community and its mechanisms to ensure that the blockchain contains an accurate and immutable—unchangeable—record of cryptocurrency transactions.
    • 2020 August, Primavera De Filippi, Morshed Mannan, Wessel Reijers, “Blockchain as a confidence machine: The problem of trust & challenges of governance”, in Technology in Society, volume 62, →DOI:
      This article draws from the extensive academic discussion on the concepts of “trust” and “confidence” to argue that blockchain technology is not a ‘trustless technology’ but rather a ‘confidence machine’.
    • 2021, Shin'ichiro Matsuo, Nat Sakimura, editors, Blockchain Gaps: From Myth to Real Life, Springer Nature, →ISBN, page 34:
      If it becomes cheaper to use a TTP to verify the transaction than some cryptographic or other automated mechanism, then the benefit of being “trustless” becomes an illusion.
    • 2022 June 7, Siobhan Roberts, “How ‘Trustless’ Is Bitcoin, Really?”, in The New York Times[1], →ISSN:
      And the system would be “trustless” — that is, it would not rely on a trusted party, such as a bank or government, to arbitrate transactions.
  3. (obsolete) Untrustworthy; not deserving to be trusted.