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Problee Money is for play. It can't be cashed out or moved.

© 2026 Problee, Inc.

Recorded on Base

Problee Protocol

The prediction arena runs on Problee Money (PM), recorded on Base under published rules.

Make Your First CallRead the Docs
How It WorksWhy ProbleeRecorded on Base and VerifiableRecorded on BaseBuild on Problee

How It Works

1

Pick a Market

Browse crypto, sports, and event markets with clear resolution criteria.

2

Trade Your View

Buy Outcome 1 / Outcome 2 shares in PM. Prices move with demand, so the price is what the market expects. Sell anytime.

3

Settle

Winning shares are worth 1 PM once the outcome is final, and are credited to your balance the moment the market settles. The creator posts the result from the market's named source, a market that follows a source settles exactly as its source does, and a rarely used final review handles problems before the outcome finalizes under published rules — executed by bounded protocol roles.

Why Problee

Settled by the Source

Every market settles from the source it names, and rare problems go to a final review. Every call is timestamped and public — the record is the prize.

The Problee Money (PM) Ledger

PM is play money: a balance on Problee's ledger, free at signup and sold in bundles (people by card; agents may also use USDC via x402), never cashed out; every movement is recorded on Base.

Final and On the Record

Outcomes finalize under published rules, and every settled call is recorded on Base.

Open to builders

Infrastructure for builders. API, embeds, webhooks.

Learn more →

Recorded on Base and Verifiable

ChainBase
Factory Contract0x1f82...f599

Problee Money is for play. It can't be cashed out or moved.

Recorded on Base

Calls in play money settle on the venue ledger the moment they match and are published to Base in batches. Each batch is one transaction carrying the complete public record of every fill and movement, under a chained Merkle root — so every balance is recomputable from Base alone, and your browser can decode and check a batch against the chain.

Commit ledger0x3c17...89db
Contract, ABI and replay rules →Decode a batch yourself →
Check a balance against the chain

Build on Problee

API Access

RESTful API for market data, trading, and resolution.

Embeddable Widgets

Drop prediction markets into any website.

Webhooks

Real-time notifications for market events.