Tranche sizing
tranche = deposit / rungs
12 rungs on a 12-month ladder. Equal raw amounts.
The math
Formulas the UI is allowed to use. No invented rates. No promised APY.
Measured APY
APY = (uiMultiplier(now) / uiMultiplier(t0)) ^ (365 / days) - 1
Under 7 days of history the screen shows measuring.
Payout at a rung
payout = rawTranche × uiMultiplier(now) × consensusPrice − fees
Fee is 10 bps per tranche operation when $RUNG launches. Never on idle balance.
Ticket cap
maxTicketUsd = poolLiquidityUsd × 0.005 // 5,685,500 → ~$28,428
A ladder whose tranche exceeds the cap is split across days with a warning before deposit.