Multi-Asset Support & Decimal Precision Handling

[hman38705]

Descriptions:

Issue #9:

Developer Goal: Allow markets to be denominated in USDC, XLM, or any external SAC token.

Detailed Logic:

1. Storage: Update Market to include token_address: Address.
2. Validation: In place_bet, verify the token_address passed by the user matches the market's configured asset.
3. Precision Handling: Use i128 for all math. Multiply by $10^{decimals}$ to maintain precision before dividing.

Verification Checklist:

• Create a market using USDC (6 decimals) and another with XLM (7 decimals).
• Place bets in both and verify total_staked correctly reflects the raw atomic amounts.
• Resolve market and verify payouts are correct to the 0.0000001 precision.
• git checkout -b features/issue-1-advanced-payout-rewards
• Pr Request create your pr against develop branch

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[edehvictor]

@edehvictor has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

Hi @maintainer,

I’d like to work on this issue.

I have experience working with multi-asset systems, precise financial calculations, and handling token decimal precision in blockchain-based applications. I understand the importance of maintaining atomic-level accuracy and validating asset integrity during transactions.

For this task, I will:

• Update the Market storage structure to include token_address: Address
• Implement strict validation in place_bet to ensure the provided token matches the market’s configured asset
• Use i128 for all calculations and correctly apply decimal scaling using 10^decimals to maintain full precision
• Test with USDC (6 decimals) and XLM (7 decimals) to verify total_staked accuracy
• Verify payout calculations to ensure correctness up to 0.0000001 precision
• Create the feature branch and submit a PR against the develop branch as requested

I focus on writing clean, secure, and precise logic, especially when working with financial values.

Please assign this issue t

ℹ️ Repo Maintainers: To accept this application, review their application or assign @edehvictor to this issue.

[Mac-5]

@Mac-5 has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

Hi maintainer, i would love to work on this issue

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Mac-5 to this issue.

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Congratulations, @Mac-5! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on February 26, 2026.

🧑‍💻 @Mac-5: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

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This issue has been completed by @Mac-5 as part of the Stellar Wave Program's 2nd Wave 🥳

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