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Your user operation’s signature is invalid due to a timestamp mismatch. This occurs when:
  • The current block.timestamp is later than the validUntil time
  • The current block.timestamp is earlier than the validAfter time
These time constraints are derived from the validationData (a bytes32 field) returned by the smart account’s validateUserOp function.

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Resolution Strategies

  1. For Time-Sensitive Operations:
    • Double-check your validAfter and validUntil settings
    • Ensure your operation is submitted within the specified timeframe
  2. For Standard Operations:
    • Set both validAfter and validUntil to 0
Pro Tip: For non-time-sensitive operations without aggregators, simplify your validateUserOp function:
  • Return uint(0) for valid signatures
  • Return uint(1) for invalid signatures