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CS Professional · Artificial Intelligence, Data Analytics and Cyber Security - Laws and Practice · Internet and Other Technologies

In a permissioned blockchain used by a consortium of Indian banks for trade finance, which feature most clearly distinguishes it from a public permissionless blockchain?

A permissioned blockchain allows only pre-approved, identified participants to validate and read transactions, unlike a public permissionless chain where anyone can join anonymously. Both use cryptographic hashing and both make recorded data tamper-resistant, so access control is the key distinguishing feature.

  1. AOnly pre-approved and identified participants can validate and read transactionsCorrect
  2. BAnyone can join anonymously and mine blocks
  3. CIt cannot use cryptographic hashing
  4. DTransactions can be freely altered by any member

Explanation

A permissioned ledger restricts participation to vetted, identified members who are authorised to read or validate. Public permissionless networks allow anonymous open participation. Hashing is used in both, and records are not freely editable in either.

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