Is it live? Is it real money?
It runs on Zcash testnet, with markets resolved from mainnet data. Judge mode gives mock credit that can never be withdrawn. See Status.
Who holds my money?
A FROST 2-of-3 escrow on the Ironwood pool. Any two relayers can move it together; one alone cannot. On the demo all three run on one VM, so that split is not real there. See Your money.
What can a relayer see?
Random-looking shares, the amounts and times of deposits and withdrawals, and the public price. Not your orders, side, size, balance, or which withdrawal is yours. See Privacy.
Why is the price public?
A market needs a price. Each crossing batch reveals one clearing price per market: that a cross happened and at what price, never who, how many or what size.
Why didn't my order fill?
Orders only cross within the batch they land in and don't rest between batches. On the demo, tick Take the other side (demo) to add a counter-order from your own account.
Why fixed deposit sizes?
1, 5 and 25 units (0.01, 0.05 and 0.25 ZEC). An odd amount would be a fingerprint on chain; other amounts are never credited.
Can a relayer steal from me or trade as me?
Not alone. Your account's tag never leaves your browser whole, and the circuit only lets a request use your row if its shares rebuild your key. Two colluding relayers could move escrow funds (FROST 2-of-3). See Threat model.
Who decides the Polymarket markets?
Polymarket (UMA). The relayers each read Polymarket's public record and sign only an outcome all three read the same. Nobody can recompute it from a block. See Markets & resolution.
How do I check an outcome?
Resolved markets carry the block hash and height and a FROST signature. verifyOutcome in the SDK checks it against the group key all three relayers serve; the app runs it in your browser.
Do these docs track me?
No. No analytics, no cookies, no third-party requests: fonts, images and search are served from docs.zpredict.site.
Is this for agents too?
Yes: /llms.txt lists every page, /llms-full.txt has them all in one file, and any page is Markdown with .md appended (or Accept: text/markdown).