[j0ntz]

Technical Design Document

robinhood-chain.md

CHANGELOG

Does this branch warrant an entry to the CHANGELOG?

• Yes
• No

Dependencies

EdgeApp/edge-currency-accountbased#1087 (the robinhood plugin itself)

Requirements

If you have made any visual changes to the GUI. Make sure you have:

• Tested on iOS device
• Tested on Android device
• Tested on small-screen device (iPod Touch)
• Tested on large-screen device (tablet)

Description

Registers the robinhood currency plugin so users can create a Robinhood Chain wallet. Robinhood Chain is an Arbitrum L2 (EVM chain 4663) that uses ETH for gas.

Asana: https://app.asana.com/1/9976422036640/project/1213843652804305/task/1217382370104887

Five files, matching the opbnb and monad registrations: corePlugins.ts, envConfig.ts, WalletAndCurrencyConstants.ts, and the two locale files.

WalletAndCurrencyConstants.ts carries two list entries, not one. Beyond WALLET_TYPE_ORDER and the SPECIAL_CURRENCY_INFO block, robinhood also goes in CURRENCY_SETTINGS_KEYS, which WalletSettingsModal reads to decide whether to show the Asset Settings row and which AssetSettingsScene maps to build its list. Every peer EVM L2 is in it. Bugbot caught the omission; the rest of the GUI's hardcoded pluginId lists were checked and correctly exclude this chain, since they are ramp and payment-protocol asset maps for providers that do not support it.

showChainIcon: true is the one entry worth a look. The native asset is ETH, so without the chain badge a Robinhood Chain wallet is indistinguishable from an Ethereum mainnet wallet in the wallet list. arbitrum and base set it for the same reason.

The wallet name string is "My Robinhood Chain" rather than "My Robinhood", since the shorter form reads as a brokerage account.

Testing. Full jest suite, snapshots and eslint pass. Driven on the iOS simulator against EdgeApp/edge-currency-accountbased#1087 linked in: searching "Robinhood" in Choose Wallets to Add lists the chain, creating gives "My Robinhood Chain" on a wallet scene titled "Robinhood Chain Network", and importing a seed with real on-chain history renders its live balance. After the CURRENCY_SETTINGS_KEYS fix, re-driven to confirm the wallet's Asset Settings row renders and "Robinhood Chain" appears in the Asset Settings list between Ravencoin and Rootstock. Screenshots are attached in comments below.

One search behavior to know when testing: filterWalletCreateItemListBySearchText requires every whitespace-separated term to prefix-match a field, so typing the full "Robinhood Chain" returns nothing while "Robinhood" matches.

Re-tested 2026-09-01 after the accb and exch merge histories were reworked, on a build that pins both reworked masters as tarballs (the test-string cheese build's exact dependency set). Wallet list renders the Robinhood Chain wallets and syncs balances, and a real 0.0005 ETH send executed to the success scene: tx 0xd5fe57cead105a391eaba43e299d414945d04ab3be7f3d216c0e6c9fea899242, receipt status 1, block 52050785, sender nonce 1 to 2. Fee came from the Arbitrum NodeInterface estimate (0.0000274 ETH quoted, 0.0000099 actual).

Follow-ups:

• ROBINHOOD_INIT needs adding to the deployed env.json, done on the build box 2026-09-01. Without it asCorePluginInit returns false and the plugin ships disabled, which is what a local build without the key does.
• Currency icons at content.edge.app/currencyIconsV3/robinhood/ (robinhood.png, chain_robinhood.png) do not exist yet, so the wallet renders a text placeholder in the app.
• Exchange rates read $0.00 in-app until edge-rates-server is deployed and its one-time rates_settings write lands.

---

Note

Low Risk
Follows the existing EVM L2 registration pattern with no changes to auth, payments, or transaction signing logic in this repo.

Overview
Adds Robinhood Chain as a creatable/importable EVM wallet in the GUI, wired the same way as other account-based L2s (e.g. opBNB, Monad).

The PR registers the robinhood plugin in corePlugins.ts, adds ROBINHOOD_INIT in envConfig.ts, and extends WalletAndCurrencyConstants.ts with list ordering, default wallet metadata (EIP-155 chain 4663, WalletConnect, import/zero-tx flags, and showChainIcon: true so ETH-native gas wallets are not confused with Ethereum mainnet). Locale strings use "My Robinhood Chain" for the default wallet name. CHANGELOG notes the feature for 4.51.0.

Actual chain logic lives in the separate edge-currency-accountbased Robinhood plugin dependency; this diff is GUI registration and copy only.

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[j0ntz]

📸 Test evidence

robinhood in create wallet

wallet in list

wallet detail

live balance from chain

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

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[j0ntz]

📸 Test evidence (after fix)

asset settings

hood shot 20 wallet settings modal

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

[j0ntz]

📸 Test evidence (re-test on reworked accb/exch masters, cheese test-string)

robinhood wallets

send fee resolved

send success

tx details txid

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