2.2 Senior Tier Pool: Stable Yield Anchoring System

2.2.1 Asset Admission Criteria

  • RWA Screening Mechanism:Dual-rating admission system (S&P/Fitch rating of BBB or above and on-chain credit score ≥ 800)

  • Underlying Asset Composition:

    • Sovereign Bonds (40%): U.S. Treasuries, German Bunds (with real-time yield synced via Chainlink oracles)

    • Asset-Backed Securities (30%): Auto loan ABS, credit card receivables ABS (cash flows automatically allocated via smart contracts)

    • Stablecoin Collateralization (30%): USDC and DAI used in overcollateralized lending on the Aave protocol (maintaining a 150% collateral ratio)

2.2.2 Yield Distribution Model

A "Base Return + Excess Sharing" mechanism is adopted:

  • Base Return:Annualized 3–5%, derived from RWA interest income and stablecoin lending spreads.

  • Excess Return:When the pool's yield exceeds 5%, the surplus is allocated as follows:20% as protocol management fees，10% distributed to $TRI stakers，70% returned to investors

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