the engine watches both far chains with the viewing keys. a zcash fill is recognized when a note decrypts to the machine's address; the engine records its commitment and the anchor of the block it landed in. a monero fill is recognized when an output decrypts with the view key; the engine records the one time key and the global index and watches its confirmations climb to ten.
the near transaction is the intent's own record on near intents. it names the input asset, the output asset, the amount and the solver that took it. the destination transaction is the delivery on the far chain. both are linked on every row above.
an intent is superseded when a newer trade from the same wallet changed the standing quote before a fragment settled. the fragment still settles and is still proven, as an uncle at half weight. an intent is orphaned when near intents refunds it, which happens when no solver route clears; its vein part returns to the intake and is re routed by the next trade's byte.