[SIP2.4] Onboard additional Silo Arks into the USDC.E Sonic Vault

Governance
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Summary

This SIP proposes onboarding two new ARKs—sUSDC-20 and sUSDC-8—into the USDC Sonic Vault on Summer.fi. Both markets are part of Silo’s isolated lending architecture on the Sonic network, offering dynamic interest rates, and deep stablecoin liquidity, that align with Summer.fi’s goals of enhancing yield scalability and protecting capital.

These integrations aim to boost the USDC Sonic Vault’s APY, expand protocol coverage on Sonic, and diversify risk within the vault’s composition.

Motivation

The proposed integration supports Summer.fi’s TVL and product growth strategy by:

  • Enhancing yield opportunities through scalable and liquid markets
  • Diversifying the USDC Sonic Vault’s ARKs, reducing correlation with other DeFi lending protocols
  • Tapping into isolated risk lending markets, which provide more granular risk control
  • Expanding the vault’s reach to users already active in the Silo/Sonic ecosystem

Specifications

  • Vault: USDC Sonic Vault
  • Network: Sonic
  • New ARKs:
  • Risk Level: Lower Risk (pending @BlockAnalitica assessment)
  • SUMR Rewards: To be determined or via future SIP

Next Steps

  • @BlockAnalitica to complete risk review and assign parameterization
  • Open community feedback window
  • Discuss SUMR rewards
  • Submit SIP to Tally for Lazy Summer DAO vote

Curious to hear thoughts from the delegates, community and @BlockAnalitica on this one — feels like another nice move for Sonic vault expansion, while keeping things well within the risk appetite of the current vault framework.

– jensei

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@Recognized_Delegates here’s the proposal:

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