Every balance change of the transaction, on our addresses or not.
The active Solana MOVEUSD mint: the only token a leg is built for.
Accounts a rail's own legs already book in this transaction (§3.2 rule 2),
PLATFORM_SETTLEMENT included: none of them gets a leg here. Empty for a
transaction CFX did not sign.
Each of our addresses in the transaction, once per ledger account holding it.