Docs

robinbox · robinhood chain · 4663

How the product works onchain. Nine short answers live on the FAQ.

Overview

robinbox sells sealed ERC-721 boxes for a fixed USDG price. Opening a box draws a prize onchain and, when the vault can cover it, pays a Robinhood Stock Token into the opener’s wallet. Opened boxes are soulbound. Sealed boxes can be sent for a year, then they expire and pay nothing.

Native gas is ETH. Payment is USDG. There is no canonical Tether USDT on this chain.

Network & tokens

chain: Robinhood Chain · 4663 (0x1237)
rpc: https://rpc.mainnet.chain.robinhood.com
gas: ETH
pay: USDG, 6 decimals · 0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168
wrapped gas: WETH · 0x0Bd7D308f8E1639FAb988df18A8011f41EAcAD73
explorer: robinhoodchain.blockscout.com ↗

Connect any injected wallet. On a phone, use the wallet’s in-app browser. The site asks to switch to chain 4663 if you are elsewhere.

Buy, open, gift

Get ETH for gas and USDG for the box. Open the home page, connect, pick 1–100 boxes, approve USDG, then buy. Price is $0.10 USDG each.
Sealed boxes appear in My Boxes. Open up to 10 at once. Opening spends a little ETH; the prize is not charged a fee.
Send up to 100 sealed boxes to any 0x address. After open, the NFT cannot move. A sealed box that sits unopened for 365 days expires and pays $0.

Odds

The draw is a 10,000-slot table in the contract. Your number is taken from onchain entropy when you open — not chosen by you. Live table:

prize	chance	slots
$0.01	28%	0–2799
$0.025	24%	2800–5199
$0.05	20%	5200–7199
$0.10	17%	7200–8899
$0.20	7%	8900–9599
$0.50	3%	9600–9899
$1.00	1%	9900–9999

A box can still pay nothing if the stock it draws has already been emptied. No single prize may exceed 25% of the pool.

Vault & stocks

Prizes come from the vault: listed Robinhood Stock Tokens plus USDG on hand. The Vault page reads it live. Addresses must match Robinhood’s token registry. 13 tickers are wired:

NVDA · AAPL · AMZN · GOOGL · META · TSLA · MSFT · INTC · COIN · CRCL · MSTR · SNDK · SPCX

Trading

The Portfolio tab on your profile buys or sells a listed ticker for USDG. Fee is 1%. This is not a limit order on an exchange — it is the in-app path. Guides: buy, gift.

Campaigns

Projects put up boxes and set tasks. Complete them, then join with one signature — no purchase. Raffle: one entry per wallet, drawn at the end. First come, first served: claim until the cap. Winners get ordinary sealed boxes. To run a campaign you pay $0.10 USDG a box, 500 minimum. See live campaigns.

Contracts

NFT name robinbox, symbol RBOX. Production open uses block.prevrandao — callers cannot pick the slot. Placeholders until a Robinhood Chain broadcast:

box: 0xBeB94aBBC0dDBD81FCDEC6dca09BDbEAA854c1de
vault: 0x65927b78c73b1863ff07aa412fd461284378EA5a

Risks

Not investment advice. A box can be worth more or less than you paid. Smart-contract review is not a guarantee. Robinhood Stock Tokens are not available everywhere. Never spend more than you are willing to lose entirely.

Nine FAQs: What is robinbox · What's inside a box, and how is the prize picked · What does it cost to buy and open · Can I lose money · How do I buy, open, or gift a box · Which network, tokens, and wallets do I need · What are Robinhood Stock Tokens, and can I trade them here · Where does the money sit, and is it safe · How do campaigns work.