Robinhood Chain

Umbra Trade's Tokens screen now uses Robinhood Chain mainnet (4663) instead of Solana/Jupiter.

How it worksCopy Anchor Link

1. Choose your installed EVM wallet and connect it to Robinhood Chain.
2. Select ETH, USDG, WETH or import a token by its verified contract address.
3. Request an onchain Uniswap v2 quote. Only direct routes and routes through WETH are searched.
4. Review the minimum output, router and route. Slippage is limited to 0.5%; quotes expire after 60 seconds.
5. ERC-20s require an exact-amount approval when necessary. After approval, request a fresh quote and confirm the swap separately.
6. The app simulates the swap before requesting a wallet transaction, then waits for its receipt.

No route means no swap. Imported tickers are not verification of authenticity. Restricted and fee-on-transfer tokens may not work. This does not provide every Uniswap v3/v4 route or guarantee that every Stock Token is tradable.

Privacy and fundingCopy Anchor Link

Robinhood balances, addresses, approvals and trades are public. RPC requests for this section pass through the hosting proxy to the RPC provider, not through the OHTTP gateway. Your connected wallet is separate from your shielded Zcash wallet.

The Fund Robinhood from ZEC panel can create a separate app-derived ETH wallet through a confidential NEAR quote. Open your mainnet Zcash wallet, review the quote and limitations, then explicitly confirm funding. Keep the app open to follow the swap. Failed confidential quotes stop funding; there is no public fallback for this route.

This funded address is not your MetaMask address. Trading from these derived wallets is not enabled yet. The external-wallet swap form remains separate; do not fund a derived wallet for immediate trading.

The panel shows the derived wallet's ETH balance and supports returning ETH to a fresh shielded ZEC address. NEAR fees apply; an ETH gas reserve remains. Token balances must be sold before returning ETH. Return transactions are saved before broadcast, allowing an identical transaction to be resumed instead of creating a second payment. An uncertain ZEC deposit is tracked rather than automatically sent again.

Funding quotes, status and derived-wallet RPC reads use Umbra's pinned-key OHTTP relay/gateway. Both services share an operator and hosting account: this is not independent-operator privacy separation. Robinhood itself remains public. Quote signatures and mainnet read checks were tested; a funded end-to-end round trip has not been performed by the developer agent.

For external-wallet swaps, fund your EVM wallet independently and retain ETH for gas. Review official bridge options.

Verified configurationCopy Anchor Link

• Chain ID: 4663
• Uniswap v2 router: 0x89e5db8b5aa49aa85ac63f691524311aeb649eba
• Factory: 0x8bceaa40b9acdfaedf85adf4ff01f5ad6517937f
• WETH: 0x0Bd7D308f8E1639FAb988df18A8011f41EAcAD73
• USDG: 0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168

Sources: Uniswap deployments and Robinhood token contracts. The application also checks the chain ID and router's WETH/factory before quoting.

Solana's historical wallet data and recovery routines are retained to avoid stranding existing funds. New Solana wallet funding is disabled.