FAQ

Frequently Asked Questions

General

What currency is used for trading?

All trading on Yosoku uses USDC (USD Coin). Share prices and payouts are denominated in USDC.

Is Yosoku decentralized?

Yes. Yosoku runs entirely on-chain on Solana. Order matching, position tracking, and settlements are handled by smart contracts. Resolution uses either the decentralized UMA Oracle or designated wallet voting.

Trading

What is a share?

A share represents a claim on a potential outcome. Yes shares pay $1.00 if the event occurs; No shares pay $1.00 if it doesn't. Share prices range from $0.01 to $0.99.

How are share prices determined?

Prices are determined by supply and demand in the order book. If many traders believe an outcome is likely, Yes share prices rise. The price roughly reflects the market's probability estimate.

What's the difference between limit and market orders?

• Limit orders: You specify the price. Your order waits in the book until someone matches it.

• Market orders: Execute immediately at the best available prices in the order book.

What is a covered bid?

A covered bid uses shares you already own as collateral instead of USDC. If you hold Yes shares, you can use them to back a No bid (and vice versa), since Yes + No = $1.00.

Can I cancel my order?

Yes. Unfilled or partially filled limit orders can be cancelled at any time. Your USDC or collateral is returned immediately.

What is share merging?

If you hold equal amounts of Yes and No shares, you can merge them to redeem $1.00 per pair. This is useful for exiting positions without selling into the order book.

What happens if I buy both Yes and No shares?

You can hold both. This might happen through separate trades or strategic positioning. You can merge equal quantities for $1.00 per pair.

Fees

What are the trading fees?

Total fees are 1.25% of trade value:

• Protocol fee: 0.75%

• Creator fee: 0.50%

• Referral fee: 0.25% (optional, deducted from protocol fee)

When are fees charged?

Fees are charged when taker takes an order, not when placed. Cancelled orders incur no fees.

What is the creator fee?

Market creators earn 0.50% of all trading volume on their markets. This incentivizes quality market creation.

How do referrals work?

Traders can include a referral account when placing orders. The referrer earns 0.25% of trades made through their referral.

Resolution

How are markets resolved?

Markets use one of two resolution methods:

• UMA Resolution: Anyone can propose an outcome with a bond. If disputed, UMA Oracle decides.

• Wallet Vote: Designated voters determine the outcome by majority vote.

What is the dispute window?

After a resolution is proposed, there's a 24-hour window where anyone can dispute it. If no dispute occurs, the proposal is finalized.

What happens if I dispute and lose?

You lose your 200 USDC disputer bond to the proposer. Only dispute if you're confident the proposal is wrong.

What happens if I dispute and win?

You receive both bonds (yours and the proposer's) minus a small protocol fee—approximately 300 USDC total.

What is a 50/50 split?

When a market cannot be resolved definitively (no majority vote, expired without proposal), it resolves to a 50/50 split. Both Yes and No shares pay $0.50 each.

When can I redeem my shares?

Immediately after a market is resolved. There's no time limit on redemption.

What if I hold losing shares?

Losing shares pay $0.00. You can still "redeem" them to close your position account and recover the rent.

Market Creation

Can anyone create a market?

Yes. Any wallet can create prediction markets on Yosoku.

What's the difference between Regular and Multi-Leg markets?

• Regular: Single yes/no question

• Multi-Leg: Multiple related outcomes (e.g., "Who will win?" with separate legs for each contestant)

Can I edit my market after creation?

No. Market parameters, questions, and rules are immutable after creation. Plan carefully before creating.

How do I earn creator fees?

Creator fees accumulate in your market's creator vault as trading occurs. You can claim them at any time.

What makes a good market question?

• Specific and unambiguous

• Objectively verifiable

• Clear resolution criteria and data sources

• Defined deadline

Technical

What wallet do I need?

Any Solana wallet that supports dApps: Phantom, Solflare, Backpack, etc.

What are the transaction fees?

Solana transaction fees are typically <$0.01 per transaction, paid in SOL.

Why did my transaction fail?

Common reasons:

• Insufficient SOL for fees

• Insufficient USDC for the trade

• Order book is full (512 orders max per side)

• Market is resolved (no more trading)

What is an order book?

The order book is an on-chain data structure that stores all open orders. Each market leg has two order books: one for Yes and one for No.

What happens to my funds if the platform goes down?

Your funds are held in on-chain smart contracts, not by Yosoku. You can always interact directly with the Solana program to manage positions and redeem shares.

Is there an API?

The Yosoku program is open source on Solana. Developers can interact with it using the Anchor framework or raw Solana transactions.

Safety

Are my funds safe?

Funds are held in on-chain program-owned accounts. The protocol is non-custodial—only you can control your positions.

Can markets be manipulated?

Like all markets, prediction markets can be influenced by large trades. However, arbitrage opportunities and the order book model help maintain fair pricing.

What if the resolution is wrong?

For UMA markets, incorrect proposals can be disputed. For Wallet Vote markets, resolution depends on the designated voters' honesty.