Account Sequence Numbers

Account sequence numbers are unique, monotonically increasing identifiers used to order transactions sent from a single address. They ensure that transactions are processed in the exact order intended by the sender, preventing replay attacks and out-of-order execution.

Each time a transaction is sent, the sequence number must be incremented to maintain the integrity of the account state. If a transaction is submitted with the wrong sequence number, the network will reject it to maintain security.

This mechanism is fundamental to the architecture of many blockchain platforms and decentralized finance applications. It provides a clear audit trail and ensures that state transitions occur logically.

Traders must be aware of their current sequence number to avoid errors when submitting multiple orders in rapid succession.