[VPD-1379] feat: add vip for treasury sweep of USDT + USDC to finance multisig

[Debugger022]

VIP-631 [BNB Chain] Liquidity Reserve — Institutional Fixed Rate Vault Backstop & Bstock Liquidation Buffer

This proposal establishes a Liquidity Reserve funded from the Venus Treasury to put idle treasury stablecoins to productive use on BNB Chain: backstopping the Institutional Fixed Rate Vault to earn interest, and providing a liquidation buffer for Bstock.

Background

The Venus Treasury holds idle USDT and USDC that currently earn no yield. This proposal moves a portion into a dedicated, treasury-owned Liquidity Reserve so it can be deployed productively while also serving two needs:

1. Institutional Fixed Rate Vault backstop — When the Institutional Fixed Rate Vault opens for subscription, the institutional allocation may not fill to target by the end of the subscription window. The Liquidity Reserve fills any shortfall so the vault launches at full size — and in doing so earns the vault's fixed interest on the capital it supplies.
2. Bstock liquidation buffer — During weekends and low-liquidity windows, large liquidations may need to be settled on-chain before the recovered collateral can be sold on a CEX. A standing buffer lets the team front this capital and complete liquidations promptly, then replenish the buffer after the CEX sell-down.

Details

• Vault backstop ($1,000,000): If the institutional subscription does not reach target, the Liquidity Reserve supplies the shortfall so the vault launches at full size. The capital supplied earns the vault's fixed rate. Interest accrues to the Liquidity Reserve and compounds: on each subsequent vault cycle the capital — now larger — is redeployed to fill shortfalls again, steadily growing the reserve.
• Bstock buffer ($200,000): A revolving buffer used to front weekend/low-liquidity liquidations on-chain, replenished after each CEX sell-down.
• The reserve is held in a dedicated protocol-owned multisig. Principal and all accrued interest remain in the reserve and are redeployed each cycle.

Summary

If approved, this VIP will:

• Transfer 480,000 USDT and 720,000 USDC (1.2M total) from the Venus Treasury into the Liquidity Reserve.
• Deploy $1,000,000 as the Institutional Fixed Rate Vault subscription backstop and $200,000 as the Bstock liquidation buffer.
• Retain principal and accrued interest in the Liquidity Reserve to compound across cycles, generating ongoing yield on otherwise-idle treasury capital.

We welcome community feedback on this proposal ahead of submitting it for a VIP vote.

[Copilot]

Pull request overview

Adds VIP-670 to sweep USDT and USDC from the Venus Treasury on BSC to a finance-controlled multisig, along with a BSC fork simulation validating event emission and exact balance deltas.

Changes:

• Introduces vip670 proposal executing two VTreasury.withdrawTreasuryBEP20 calls (USDT + USDC) to the finance multisig.
• Adds a BSC fork simulation asserting preconditions, WithdrawTreasuryBEP20 event count, and exact before/after balance changes.
• Adds local ABI JSON files required by the simulation (ERC20 + VTreasury).

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
vips/vip-670/bscmainnet.ts	Defines VIP-670 proposal actions and metadata for sweeping USDT/USDC from VTREASURY to FINANCE_MULTISIG.
simulations/vip-670/bscmainnet.ts	Fork test validating event emission and exact Treasury/multisig balance deltas for both tokens.
simulations/vip-670/abi/VTreasury.json	VTreasury ABI used by the simulation to parse WithdrawTreasuryBEP20.
simulations/vip-670/abi/ERC20.json	ERC20 ABI used by the simulation to query token balances.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[fred-venus]

https://venus.io/#/governance/proposal/631?chainId=56