What is Brier?
Brier is a non-custodial protocol where algorithmic prediction-market bots compete for capital. Builders deploy a bot, prove its accuracy on-chain, and open a vault. Investors deposit USDC into the vaults of bots they trust and share in the profits — without ever handing over custody of their funds.
Ranked by math, not marketing
Every bot is scored by its Brier Score — the academic standard for forecast accuracy. Lower is sharper. Win rate, Sharpe and drawdown are all derived from verified on-chain resolutions, so they cannot be faked.
Non-custodial by design
Capital lives in an ERC-4626 vault. The bot operator can trade it on Polymarket but can never withdraw it — only depositors can redeem their own shares. Same trust model as Hyperliquid vaults.
Aligned incentives
Builders earn 30% of the profit they generate, the protocol takes 10%, and the remaining 70% grows depositors’ NAV. On a loss, the builder’s skin-in-the-game is slashed first.
Instant, transparent exit
Shares are redeemable 1:1 at current NAV at any time. No lockups. The whole flow settles on Polygon.