--- title: "Aave Considers Onboarding Native Bitcoin Collateral via Babylon Protocol" description: "An Aave governance proposal outlines integrating Babylon Trustless Bitcoin Vaults across two V4 Spokes without bridges or third-party custodians." url: https://basisdesk.news/news/aave-governance-babylon-native-bitcoin-collateral-v4 published: 2026-10-15T09:26:19.115Z modified: 2026-10-15T09:26:19.115Z section: DeFi author: Basis Desk Newsroom (AI-generated, source-verified) sentiment: neutral tickers: [BTC, AAVE, WBTC] tags: [aave, babylon, bitcoin-defi, governance, lending] license: Quote with attribution to Basis Desk (basisdesk.news). Not financial advice. --- # Aave Considers Onboarding Native Bitcoin Collateral via Babylon Protocol An Aave governance proposal outlines integrating Babylon Trustless Bitcoin Vaults across two V4 Spokes without bridges or third-party custodians. ## At a glance - **What happened:** Babylon Labs submitted an ARFC proposal to allow Aave V4 users to deposit native Bitcoin as collateral via non-custodial Taproot vaults. - **Why it matters:** The system enables Bitcoin-backed lending without custodial bridge dependencies while routing liquidations through existing WBTC reserves. - **Who is affected:** Aave DAO tokenholders, Bitcoin holders seeking DeFi credit, and WBTC liquidity providers. - **What's next:** Aave risk service providers will provide parameters ahead of an on-chain DAO governance vote. - **Status:** proposed - **Primary source:** [[TEMP CHECK] Babylon Trustless BTC Vault Integration on Aave V4](https://governance.aave.com/t/temp-check-babylon-trustless-btc-vault-integration-on-aave-v4/24964) — governance.aave.com ## Key points - Babylon Labs submitted an ARFC proposal to onboard non-custodial native BTC as collateral to Aave V4 via Trustless Bitcoin Vaults [2]. - Collateral is locked in Bitcoin Taproot UTXOs, using a restricted ERC-20 unit on Ethereum and ZK fraud proofs via the BaBe protocol [1][2]. - Liquidations resolve immediately in WBTC on Aave, leaving permissioned arbitrageurs to settle the multi-day native Bitcoin redemption [1][2]. ## Editorial remark - **Context:** Babylon built out a trustless Bitcoin staking network currently holding over 40,000 BTC. It is now attempting to port that non-custodial architecture to decentralized money markets, targeting Aave's newly designed V4 Hub-and-Spoke framework. - **Impact:** If approved, Aave users will be able to draw stablecoin liquidity against Bitcoin without surrendering custody to centralized bridges or custodial wrappers, while creating borrow demand for Aave's existing WBTC reserves. - **Watch:** Risk parameter recommendations from Aave's risk service providers and the subsequent timeline for an on-chain Aave DAO governance vote. Babylon Labs submitted an Aave Request for Final Comments (ARFC) to activate native $BTC as collateral on Aave V4, following a temperature check on the integration [1][2]. The proposal introduces Babylon's Trustless Bitcoin Vaults (TBV) protocol to allow users to lock Bitcoin natively in Taproot UTXOs and borrow host-chain assets, starting with stablecoins on Ethereum [1][2]. At the time of writing, $AAVE traded down 5.6% over 24 hours at $150.32, while Bitcoin was down 2.5% at $81,203. The deployment adds two custom modules to Aave V4's Hub-and-Spoke architecture: the Babylon Core Lending Spoke and the BTC Vault Swap Spoke [1]. Because Aave V4 requires ERC-20 collateral, the integration uses an 8-decimal, transfer-restricted accounting token representing locked Bitcoin vaults 1:1, non-tradable and limited strictly to protocol contracts [1][2]. Babylon's TBV framework relies on zero-knowledge proof verification through the BaBe protocol developed with UC Berkeley, enabling off-chain host verification backed by fraud-proof challenge windows on the Bitcoin network [1][2]. Depositors can act as their own challengers, eliminating discretionary threshold multisigs, wrapped assets, or third-party custodians [1][2]. ## Liquidation and Wrapped Reserves To reconcile Bitcoin's settlement latency with immediate DeFi liquidations, the proposal incorporates an isolated swap spoke [1][2]. When a borrower's health factor drops, permissionless liquidators seize the underlying vault by receiving wrapped Bitcoin ($WBTC) pulled from the Aave V4 Hub at a bonus [1][2]. A permissioned group of arbitrageurs then settles the hub's WBTC debt before redeeming the original Taproot UTXO on the Bitcoin blockchain [1][2]. Babylon noted this loop creates active borrow demand for Aave's existing WBTC reserves, which exceed $5 billion in deposits but face underutilized borrowing capacity [1][2]. Babylon Labs was founded in 2022 by Stanford Professor David Tse and Dr. Fisher Yu, raising more than $110 million from investors such as Paradigm, Polychain, and a16z [2]. Its core Bitcoin staking system secures other networks, with active balances totaling 40,772 BTC (approximately $3.37 billion) [2]. Ongoing audits across TBV are being conducted by Coinspect, Sherlock, Zellic, ABDK, and ZK Security, alongside formal verification by Runtime Verification [1]. Aave's independent risk service providers will specify collateral factors, caps, and interest parameters before moving the integration to an on-chain DAO vote [1][2]. ## Sources 1. [[TEMP CHECK] Babylon Trustless BTC Vault Integration on Aave V4](https://governance.aave.com/t/temp-check-babylon-trustless-btc-vault-integration-on-aave-v4/24964) — governance.aave.com, 2026-10-15 2. [[ARFC] Onboard Native BTC as Collateral to Aave V4 via Babylon Trustless Bitcoin Vaults](https://governance.aave.com/t/arfc-onboard-native-btc-as-collateral-to-aave-v4-via-babylon-trustless-bitcoin-vaults/25845) — governance.aave.com, 2026-10-15 --- Basis Desk Newsroom · AI-generated, source-verified · https://basisdesk.news/about/how-we-use-ai