RH Burner OS

A BurnerOS-style wallet for Burner Ethereum hardware cards on Ethereum, Base, Arbitrum, and Robinhood Chain, with WalletConnect so you can use the card as a signer in Safe.

Live: https://z80.wtf/burner

Private keys never leave the Burner secure element. Signing uses the same LibBurner / LibHaLo stack as official BurnerOS.

Features

• Connect Burner via phone NFC (iPhone Safari / Android Chrome) or HaLo Bridge (desktop USB reader)
• View ETH balance and send on Ethereum, Base, Arbitrum, and Robinhood Chain (mainnet 4663 / testnet 46630)
• ENS forward resolution for send (vitalik.eth) and reverse lookup on the connected address
• WalletConnect pairing — paste a wc: URI from Safe (or any dApp)
• Approve session proposals and sign personal_sign / typed data / transactions with a card tap + PIN
• Deep link to Safe with the selected chain

Quick start

npm ci
cp .env.example .env.local
# Add a free WalletConnect Project ID from https://cloud.reown.com
npm run dev

Open http://127.0.0.1:3847.

Desktop (HaLo Bridge)

1. Install HaLo Bridge and start it
2. Grant origin consent: open http://127.0.0.1:32868/consent?website=http://127.0.0.1:3847
3. Plug in an NFC reader, tap your Burner, click Tap Burner to connect

For the deployed site, grant consent for the origin https://z80.wtf instead (no /burner path).

Phone NFC

On iPhone, open the site in Safari, tap Tap Burner to connect, and follow the NFC security-key prompt while holding the Burner near the top of the phone. LibHaLo uses the iOS credential transport.

Android Chrome uses WebNFC. Neither phone flow requires HaLo Bridge or a hosted backend. The HaLo Bridge button is only for a desktop with the local bridge app and a USB NFC reader.

Connect to Safe.global

1. Connect your Burner in RH Burner OS
2. Paste your Reown / WalletConnect Project ID (stored in the browser)
3. Open app.safe.global
4. Connect wallet → WalletConnect → copy the URI
5. Paste the URI into RH Burner OS → Pair with Safe → Approve
6. When Safe asks you to sign, enter your PIN and tap the Burner

Deploy (GitHub Pages)

This repo deploys to https://z80.wtf/burner via GitHub Actions on every push to main.

1. Repo Settings → Pages → Source: GitHub Actions (one-time)
2. Push to main (or run Deploy to GitHub Pages)
3. WalletConnect Project ID is included; override in the UI if needed

Local production export (with /burner base path):

GITHUB_PAGES=true npm run build
mkdir -p .preview
ln -sfn ../out .preview/burner
npx serve .preview
# Open http://localhost:3000/burner/

Networks

Network	Chain ID	RPC	Explorer
Ethereum	1	https://ethereum.reth.rs/rpc	Etherscan
Base	8453	https://mainnet.base.org	Basescan
Arbitrum One	42161	https://arb1.arbitrum.io/rpc	Arbiscan
Robinhood Chain	4663	https://rpc.mainnet.chain.robinhood.com	Blockscout
Robinhood Testnet	46630	https://rpc.testnet.chain.robinhood.com	Testnet explorer

ENS names are resolved against Ethereum mainnet regardless of the selected send network.

Stack

• Next.js, TypeScript, Tailwind, shadcn/ui
• @arx-research/libburner + @arx-research/libhalo
• viem
• @reown/walletkit (WalletConnect wallet role)

Environment

Variable	Required	Description
NEXT_PUBLIC_WALLETCONNECT_PROJECT_ID	For WalletConnect	Project ID from cloud.reown.com

You can also paste the Project ID in the UI; it is saved to localStorage only.

Security notes

• This app never sees your private key or seed
• PIN is used only to authorize on-card signing and is not persisted
• Review every WalletConnect request before tapping to sign

Not affiliated with Robinhood Markets, Inc. or Arx Research.