Keep the current cozy pixel design, tabs, fonts, colors and all existing features unchanged. Add one new feature: an all-time Leaderboard by total betting volume.

PLACEMENT

Add a new tab "Leaderboard" next to "Stats". Also add a small "Top 5" preview card at the bottom of the "The wheel" tab that links to the full tab.

DATA (onchain only, no backend, no API keys)

Game contract (Ethereum mainnet): 0xe33ab493249a2df0d8c4a71ac54f46d1f7778367

Count every bet from these events since the contract's deployment block:

• BinaryBet(uint256 indexed k, address indexed bettor, uint8 indexed market, bool side, uint256 amount) -> volume += amount
• TicketBought(uint256 indexed k, address indexed bettor, uint256 guess) -> volume += 5 IMD per ticket (TICKET_PRICE = 5e18) IMD has 18 decimals.

Find the deployment block once (binary search with eth_getCode) and hardcode it in config.

Read logs in chunks of at most 2,000 blocks. Use a list of public Ethereum RPCs with automatic fallback and retry (e.g. ethereum-rpc.publicnode.com, eth.llamarpc.com, cloudflare-eth.com, rpc.ankr.com/eth); if one refuses a range, try the next. Cache results in localStorage with the last scanned block, and on later visits only scan new blocks. Refresh every 60 seconds while the tab is open.

PER WALLET

Aggregate by bettor address: total volume (IMD), number of bets, number of EXACT tickets, and number of distinct hours played. Optionally show total IMD lost from the contract's lossOf(address) view if it exists.

TABLE

Columns: rank, wallet (ENS name if available, else 0x1234…abcd with copy button and Etherscan link), total volume in IMD (2 decimals) plus USD estimate using the IMD price already used on the site, bets count, hours played.

Sort by total volume, descending. Show top 50 with pagination.

Highlight the top 5: gold, silver, bronze styling for ranks 1-3 and a soft glow for ranks 4-5, with a small pixel crown or trophy icon. Add a short line above the table: "Top 5 by volume", leave the reward text configurable in one constant so it can be edited later (default empty).

If a wallet is connected (existing connect flow), pin a "Your position" row at the top showing the user's rank and volume, even if outside the top 50. Viewing the leaderboard must never require connecting a wallet or signing anything.

STATES

Loading: pixel hamster running on the wheel with "Counting bets…" and a progress indicator by scanned blocks.

Empty (no bets yet): friendly message "No bets yet. Be the first name on the board 🐹" with a button to the betting tab.

Error: "Couldn't load the leaderboard, retrying…" and keep retrying in the background.

CONSTRAINTS

Do not change any contract, address, fee or betting logic. No new dependencies beyond what the site already uses unless needed for ENS. Mobile friendly. Include the data logic in a separate small module so it can be reused for other leaderboards later.