Add NowNodes blockbook server to eCash for sync/send recovery

[j0ntz]

CHANGELOG

Does this branch warrant an entry to the CHANGELOG?

• Yes
• No

Dependencies

none

Description

eCash (XEC) wallets could not resync or send: the plugin's only blockbook sync server, wss://blockbook.fabien.cash/websocket, is down, so resync hangs and sends fail. This is an active support issue and a regression.

The NowNodes XEC blockbook host was already referenced in engineInfo.serverConfigs, but only as an HTTP broadcast fallback — it was never in defaultSettings.blockbookServers, so it was never used for the websocket sync. This adds it, with the %{nowNodesApiKey} template that Socket.ts substitutes from the plugin's init options, matching the pattern Bitcoin Cash, Bitcoin and Dogecoin already use.

   blockbookServers: [
-    'wss://blockbook.fabien.cash/websocket'
+    'wss://blockbook.fabien.cash/websocket',
+    'wss://xec-blockbook.nownodes.io/wss/%{nowNodesApiKey}'
   ],

The consuming app already wires ECASH_INIT.nowNodesApiKey through to the ecash plugin (edge-react-gui corePlugins.ts), using the same NowNodes key as the other UTXO coins; production env just needs that key populated for eCash (a deploy-config change, like every other NowNodes-backed coin).

Verification

• Server check: blockbook.fabien.cash no longer serves the blockbook API; xec-blockbook.nownodes.io returns 401 without an API key and 200 with the key, reporting a live, in-sync eCash node ("coin":"ECash","network":"XEC","inSync":true).
• In-app (iOS sim, edge-react-gui with this plugin linked in and ECASH_INIT.nowNodesApiKey set): resynced a funded XEC wallet ("My eCash", 126,536.16 XEC). Resync completed and the wallet stayed synced with a live balance — data that can only come from the NowNodes server, since the old server is down. Screenshots attached.

Asana: https://app.asana.com/0/1215088146871429/1213046875952149

---

Note

Low Risk
Config-only addition of a fallback sync server using an established NowNodes URL pattern; no changes to spending, key handling, or sync logic beyond server list selection.

Overview
Adds a second default blockbook websocket for eCash so wallets can fall back when wss://blockbook.fabien.cash/websocket is down.

defaultSettings.blockbookServers in ecash.ts now includes wss://xec-blockbook.nownodes.io/wss/%{nowNodesApiKey} alongside the existing Fabien server. That mirrors Bitcoin, Bitcoin Cash, and Dogecoin and wires the same NowNodes host that was already listed in engineInfo.serverConfigs for HTTP broadcast into websocket sync. The %{nowNodesApiKey} placeholder is filled from plugin init options at connection time.

CHANGELOG records the fix under Unreleased.

^{Reviewed by Cursor Bugbot for commit 3da1d2f. Bugbot is set up for automated code reviews on this repo. Configure here.}

[j0ntz]

📸 Test evidence — XEC resync via new NowNodes server

agent proof 1213046875952149 01 xec wallets funded

agent proof 1213046875952149 02 xec wallet balance

agent proof 1213046875952149 03 resync confirm

agent proof 1213046875952149 04 resync complete synced

Captured by the agent's in-app test run (build-and-test).