A breakthrough is a value event, not a date. When a rental's harvested XMR unlocks, half pays holders and half buys the coin back and burns it.
| # | rental | harvest | to holders | to buyback | bought | burned | monero tx | intent | buy | burn | slot |
|---|---|---|---|---|---|---|---|---|---|---|---|
| No breakthrough yet. The first one fires when the first harvest unlocks. | |||||||||||
The buyback leg does not begin on Solana. It begins on NEAR as a multi leg intent: XMR in, SOL out, and the SOL leg is bound to a single buy on the pump.fun curve for this mint. The fill settles on the intents side first, so by the time anything is visible on Solana, the SOL is already committed to one swap in one transaction.
A sandwich needs to see the buy before it lands and get in front of it. There is nothing to see. The intent is filled by a solver who signs the Solana buy as the last leg, and that buy is one transaction with no pending state between the fill and the swap.
The bought tokens are sent to the burn instruction in the same transaction. The buy signature and the burn signature are the same signature. The history table shows both columns anyway, because both are things a reader will look for.