Markets foreverything you'dbet on.
A prediction market built for the long tail — anyone can launch a market, anyone can trade for under a cent, all settled on-chain in real USDC on Base.
Access alphaLong
Tail
Markets for the 89% of questions order-book venues leave on the table — niche crypto, sports props, creator-led.
Real
Base
Trades and payouts in actual on-chain Base. Self-custodial, sub-cent fees on Base.
Open
Markets
Anyone with a wallet can launch one in 60 seconds. Anyone with BASE or USDC can trade. No gatekeepers.
We launch markets that move. Predictions that resolve.
At ToldYou, we turn the questions everyone's already arguing about into liquid, on-chain markets — built on Base, settled in real USDC, open to anyone with a wallet.
More about usFrequently Asked
Questions
ToldYou is a decentralized prediction market platform on Base, with Solana as a secondary surface. Users create yes/no markets on any topic and trade shares whose price reflects the probability the crowd assigns to the outcome. When a market resolves, winning shares pay out 1 USDC each.
Each market uses an LMSR (Logarithmic Market Scoring Rule) automated market maker. The price of a YES share is always between 0 and 1 USDC and represents the implied probability of YES resolving true. As people buy YES, the YES price goes up and NO goes down, and vice versa.
Most markets resolve through UMA's Optimistic Oracle. Anyone can submit an answer, which becomes binding after a challenge window unless someone disputes it. Disputed answers go to UMA's Data Verification Mechanism for tokenholder vote.
A small per-trade fee (~1%) paid in USDC, plus standard network fees (a fraction of a cent on Base). Market creators set a liquidity budget when creating a market — that's their cost; takers pay only the trade fee + slippage.
Yes. Once you're in, click "Create" in the nav, fill in the question, description, resolution date, category, and image, and seed it with USDC liquidity. The market is live immediately and starts at 50/50.
We use Privy for auth — email/social login auto-creates an embedded wallet, or you can connect Coinbase Wallet, MetaMask, Phantom, Solflare, or any major EVM/Solana wallet you already have.
Yes. ToldYou markets settle in USDC on Base mainnet. Markets resolve to either 1 USDC or 0 USDC per share based on outcome. During the alpha some markets may run on devnet for testing — check the market detail page.
ToldYou is in private alpha. We're whitelisting users individually so we can iron out edge cases before the broader launch. If you have a key, enter it on the access page and you're in until further notice.
When a market resolves, your winning shares become claimable on the market page. Click "Redeem winnings" — you sign one transaction and the USDC lands in your wallet immediately.
DM us on Twitter or drop into the Discord. Direct contact channels are linked in the footer.