Call it now.
Prove it later.
Seal a call on any Robinhood Stock Token. Nobody sees it until the horizon ends, then Chainlink's price history decides it. Every call stays on your record, including the ones you'd rather forget.
Example: a 7-day call replayed from real Chainlink prices
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The record
Every caller, straight from the contract. Hit rate counts calls that were never revealed as misses, so only the full history shows.
How a call works
Four steps, all on Robinhood Chain. The only thing you keep off chain is the secret that opens your call.
Seal
Pick a stock, up or down, and a horizon of 1, 7 or 30 days. Only a hash goes on chain; the horizon is public.
Wait
The call is locked. You can't edit it, delete it or swap the stock, and nobody can read it.
Reveal
When the horizon ends you have 3 days to open it. Your secret proves which call you sealed.
Scored
The contract reads the Chainlink round live when you sealed and the one live at the end, and books the move.
Why the record holds
Screenshots can be cropped and posts deleted. These rules are in the contract and apply to everyone the same way.
Hidden until it counts
The chain only stores hash(you, stock, direction, secret). Nobody can copy your call while it runs, and a hash copied from your wallet won't open for theirs.
Prices from Chainlink history
Start and end prices are the Chainlink rounds that were live at those exact moments. The contract checks the round before and after, so nobody picks a better price.
No cherry-picking
A call not opened within 3 days of its end becomes a forfeit, and anyone can mark it. Sealing both directions and showing only the winner costs a miss every time.
No money at stake
Sealed holds no funds and pays nothing out. A call costs 0.00002 ETH plus gas; holders of 1,000,000 $SEALD seal for free.
What you can call
All 27 Stock Tokens with a Chainlink feed on Robinhood Chain. Prices and 24h change come from the same feeds that score the calls.
Questions
The call can't be opened and turns into a forfeit. The app keeps secrets in this browser and lets you download them as a receipt file. Keep it.
Any move in the direction you called between the two Chainlink prices. The size of the move is booked too, so a record shows hit rate and average move.
Stock feeds pause when markets close. A horizon that ends on a Saturday is scored at the last price before the close.
No. Sealed only keeps the record. There is nothing to win or lose except reputation.
Add new Chainlink feeds (existing ones never change) and the sealing fee, capped at 0.001 ETH. No call can be edited by anyone.
No. The contract is short, with unit tests and a test against the real NVDA feed history on a copy of mainnet.