Market Creation

Market Creation Guide

This guide explains how to create prediction markets on Yosoku, including both Regular and Multi-Leg market types.

Before You Create

Requirements

• Solana wallet with SOL for transaction fees

• Understanding of the event you're creating a market for

• Clear, unambiguous question that can be objectively resolved

Planning Your Market

Consider the following before creating:

Element	Considerations
Question	Is it clear and unambiguous?
Resolution	How will the outcome be determined?
Deadline	When will the event occur?
Market Type	Single outcome or multiple possibilities?
Resolver	UMA Oracle or designated voters?

Market Types

Regular Markets

Regular markets have a single binary outcome: Yes or No.

Best for:

• Simple yes/no questions

• Single events with two possible outcomes

• Price predictions with a specific threshold

Examples:

• "Will Bitcoin exceed $100,000 by December 31, 2025?"

• "Will the Federal Reserve cut rates in Q1 2026?"

• "Will SpaceX launch Starship before March 2026?"

Multi-Leg Markets

Multi-Leg markets contain multiple related outcomes, each with its own Yes/No pair.

Best for:

• Events with multiple possible winners

• Categorical predictions

• Related outcomes that should be grouped

Examples:

• "Who will win the 2026 World Cup?" (Legs: Brazil, France, Argentina, Germany...)

• "Which party will win the 2026 election?" (Legs: Party A, Party B, Party C)

• "What will be Q4 GDP growth?" (Legs: <0%, 0-2%, 2-4%, >4%)

Creating a Regular Market

Step 1: Initialize MarketInfo

First, create the MarketInfo account that stores metadata:

1. Navigate to "Create Market"

2. Select "Regular Market"

3. Choose resolution type:

   • UMA Resolver: Decentralized oracle with dispute mechanism

   • Wallet Vote: Designated voters determine outcome

Step 2: Set Market Metadata

Fill in the market information:

Field	Description	Example
Question	The prediction question	"Will ETH flip BTC by 2026?"
Description	Additional context	"Ethereum market cap exceeds Bitcoin..."
Rules	Resolution criteria	"Based on CoinGecko data at 00:00 UTC..."

For Wallet Vote markets, also specify:

• Voter wallet addresses (1-10 addresses)

Step 3: Configure Market Parameters

Parameter	Description	Recommendation
Category	Market category	"Crypto", "Sports", "Politics"
Image URI	Optional image URL	IPFS or hosted image
Event Deadline	When the event occurs	Set after expected outcome
Min Order Size	Minimum trade amount	1 USDC typical

Step 4: Create Order Books

The system creates:

• Yes Order Book

• No Order Book

• Yes Fill Log

• No Fill Log

• Market Vault

Step 5: Finalize Creation

1. Review all parameters

2. Approve the transaction

3. Sign with your wallet

4. Market is live and tradeable

Creating a Multi-Leg Market

Step 1: Create Base Market

1. Navigate to "Create Market"

2. Select "Multi-Leg Market"

3. Set market-level parameters:

   • Question template (use ___ as placeholder)

   • Category, image, deadline

   • Resolution type and voters (if applicable)

Question Template Example:

• Template: "Will ___ win the championship?"

• Leg names replace the placeholder: "Lakers", "Celtics", "Heat"

Step 2: Add Legs

For each possible outcome:

1. Click "Add Leg"

2. Enter the leg name

3. System creates:

   • Leg-specific order books

   • Leg-specific fill logs

   • Leg-specific vault

Step 3: Repeat for All Outcomes

Add all relevant outcomes as separate legs. Each leg operates independently with its own:

• Price discovery

• Order matching

• Resolution

Multi-Leg Considerations

Aspect	Behavior
Trading	Each leg trades independently
Pricing	Leg prices don't need to sum to 100%
Resolution	Each leg resolves separately
Redemption	Each leg pays out based on its outcome

Market Parameters Reference

Required Parameters

Parameter	Type	Description
Market ID	u64	Unique identifier (auto-generated)
Category	String	Market category for filtering
Event Deadline	Timestamp	When the event should be resolved. After this deadline passes market is automatically resolved to 50/50 so its good to add some buffer
Min Order Size	u64	Minimum USDC per order
Resolution Type	Enum	UMA or WalletVote

Optional Parameters

Parameter	Type	Description
Image URI	String	Market image URL
Description	String	Extended market description
Rules	String	Resolution rules and criteria

MarketInfo Fields

Field	Max Length	Purpose
Question	500 chars	The prediction question
Description	3500 chars	Additional context
Rules	3500 chars	Resolution criteria

Writing Effective Questions

Do's

• Be specific: Include exact thresholds, dates, and conditions

• Be objective: Outcome should be verifiable by anyone

• Include sources: Specify where resolution data comes from

• Set clear deadlines: When exactly will this be determined?

Don'ts

• Avoid ambiguity: "Will X do well?" (What is "well"?)

• Avoid subjectivity: "Will X be popular?" (How measured?)

• Avoid impossible resolution: Events with no verification method

Example: Good vs Bad Questions

Bad Question	Good Question
"Will Bitcoin go up?"	"Will Bitcoin exceed $100,000 on CoinGecko at any point before Dec 31, 2025 23:59 UTC?"
"Will the team win?"	"Will the Lakers win the 2025-26 NBA Championship according to NBA.com?"
"Will it rain?"	"Will NOAA report >0.1 inches of rain in NYC on January 15, 2026?"

After Creation

Monitoring Your Market

As a market creator, you can:

• View trading activity and volume

• Monitor accumulated creator fees

• Claim fees from the creator vault

Creator Responsibilities

• Ensure question remains clear

• Consider proposing resolution when event concludes (for UMA markets)

• Cannot modify market parameters after creation

Market Verification

Yosoku may verify markets that meet quality standards:

• Clear, unambiguous questions

• Reliable resolution sources

• Active trading

Verified markets receive enhanced visibility on the platform.

Closing Markets

After resolution, markets can be closed to reclaim rent:

1. Ensure market is resolved

2. Ensure all order books are empty

3. Close order books (returns rent)

4. Close market vault

5. Close market account

Remaining funds and rent are returned to the creator.