Add a 0x prefix to a hex string if not present.

Convert a hex-encoded string to a byte array, removing the 0x prefix if present.

Encode bytes to a hex string with a 0x prefix.

Generates a random password.

Check if the node wallet is ready for transacting.

Remove a 0x prefix from a hex string if present.

Sleeps for the specified time, but can break out if the provided context is cancelled.