The third custody tier keeps exits cheap by depth, not by date: "Keep my exit cheap" renews a coin once its history is four hops deep

Why: a unilateral exit publishes one on-chain transaction per off-chain hop, so depth — not age — is what makes an exit expensive, and a renewal a week before expiry flattens exactly the same history a renewal in the last hours does. The week-ahead "early" tier only guarded against the server being unreachable at the very end, which is not the case worth selling. (Adam, 2026-10-23.)

exit = self (last-hours renewal, free bracket + base, the same grid-snapped backstop) plus: any coin whose genesis chain is 4+ hops deep is renewed in the next round the app runs, paying the top bracket + base — but only when that fee is under a tenth of the coin (flattening a 21-sat coin for 300 sats helps nobody; its exit is uneconomic anyway). Deep coins ride along with an expiry renewal when one is due, or get a round of their own. The server-side backstop stays near-expiry only: depth changes only while the wallet transacts, i.e. while the app is open. A stored 'early' reads as 'exit'. Card copy says what the hop count means and what the two prices are for.

Co-Authored-By: Claude Fable 5.1 <[email protected]>

1 files changed, 3 insertions, 3 deletions

diff --git a/src/i18n.js b/src/i18n.js
index 6d36f49..d3817b6 100644
--- a/src/i18n.js
+++ b/src/i18n.js
@@ -784,11 +784,11 @@ const STR = {
     arkCustodyCustodialDesc: 'Nothing renews and no renewal fees are paid. Past its timelock a coin is held by coinos, like a balance on the old coinos: paying, receiving and withdrawing keep working, but bringing it on-chain needs coinos’s cooperation.',
     arkCustodySelf: 'Keep my own exit',
     arkCustodySelfDesc: 'Coins renew in the last hours before their timelock ends — the cheapest moment — so you can always exit on your own. Roughly once every {days} days per coin.',
-    arkCustodyEarly: 'Renew a week early',
-    arkCustodyEarlyDesc: 'Coins renew about a week before their timelock ends, a margin in case coinos is unreachable right at the end.',
+    arkCustodyExit: 'Keep my exit cheap',
+    arkCustodyExitDesc: 'Every transfer adds a hop to a coin’s history, and a unilateral exit pays one on-chain transaction per hop. This renews near expiry too, and also as soon as a coin’s history is {hops} hops deep, so bringing any coin on-chain stays close to a fresh coin’s price. Only for coins worth it: never more than a tenth of a coin on its renewal.',
     arkCustodyCostNone: 'no fees',
     arkCustodyCostSelf: '{base} per renewal',
-    arkCustodyCostEarly: '{pct} + {base} per renewal',
+    arkCustodyCostExit: '{base} near expiry, {pct} + {base} when early',
     arkCustodySaved: 'Custody choice saved',
     arkCustodyNotHere: 'This server does not honor coins past their timelock, so they renew automatically here.',
     arkExitNoneExitable: 'Every coin has passed its timelock, so there is nothing a unilateral exit can take on-chain: coinos holds them now. Renewing restores your own exit; withdrawing with coinos’s cooperation works as before.',