Babylon Labs published an Aave governance proposal on 14 October seeking native Bitcoin collateral support in V4 through Trustless Bitcoin Vaults. It proposes a Babylon Spoke for borrowing and a BTC Vault Swap Spoke for liquidation settlement.

The author says depositors would lock BTC in a Bitcoin Taproot output, while Ethereum records the collateral through a transfer-restricted representation. Risk parameters remain for Aave’s service providers to supply.

A proposal, not an available loan product

The stated next steps are community feedback and risk analysis, then Snapshot if consensus emerges, followed by an onchain AIP. A passed earlier temperature check is not final approval of this design. The proposal also says a pre-deployment re-audit is underway.

Native deposits, wrapped-BTC liquidation liquidity

The design lets permissionless liquidators receive wrapped BTC while designated arbitrageurs handle slower native-Bitcoin redemption. It therefore distinguishes the deposited asset from the liquidity used to settle a liquidation.

NetNapz assessment

Assessment: removing a conventional custodian from the deposit path does not remove the need to evaluate the whole system. A borrower depends on correct collateral accounting, cross-chain event verification, timely challenges and an exit process that works when markets are stressed.

The liquidation arrangement deserves particular attention. Liquidators may want immediate settlement while the underlying asset takes longer to redeem. That timing difference creates a financing and inventory problem. Risk reviewers should examine whether the liquidity available to bridge it remains sufficient during simultaneous liquidations, not just under normal conditions.

A useful governance decision would set out caps, pricing assumptions, failure handling and the parties able to intervene. Without those parameters, users cannot reliably infer a safe borrowing ratio from the architecture alone.

What would make this material for Aave

Assessment: a new collateral route could broaden lending activity if it attracts repeat borrowing on sustainable terms. That is not yet demonstrated. The relevant evidence would be approved configuration, reviewed contracts, a verified deployment and subsequent loan performance.

AAVE holders should also separate protocol revenue from token value capture. Borrower interest, fees available to the DAO and any token-purchase mechanism are different accounting flows. A proposed incentive arrangement is not evidence that purchases or returns have occurred.

Source and limitations

Babylon Labs’ Aave ARFC, published and checked 14 October 2026. Technical descriptions are attributed to the proposal. NetNapz has not audited the contracts, operated a vault or verified production lending.