xBTC Lands on Aptos
Each xBTC is fully collateralized by native BTC held by OKX and independently verified in monthly Proof-of-Reserves audits.
As part of the launch, Aptos-native projects Aries Markets, Echo Protocol and Hyperion will be launching an OKX Learn & Earn campaign about xBTC.
Why xBTC?
xBTC is a wrapped version of Bitcoin that is fully backed 1:1 by BTC held in custody by OKX. Now available to use on Aptos, xBTC brings the value of native Bitcoin into the Aptos ecosystem by offering:
Transparency & Security: Native BTC collateral held in cold storage with published Proof of Reserve (PoR) audits every month.
Seamless On-Chain Minting: Mint and redeem xBTC directly on Aptos with a few clicks—no wrapped intermediaries.
Deep, Ready Liquidity: Instantly tap into Aptos’s BTCfi ecosystem, which already supports over $350 million in wrapped BTC (aBTC & SBTC) and $1.5 billion in native USDT and USDC liquidity.
Aptos’ thriving DeFi ecosystem is home to other BTC initiatives like Echo Protocol’s aBTC and Stakestone’s sBTC, which has nearly $270 million and $90 million in TVL, respectively. Building on momentum behind wrapped BTC assets, xBTC is poised to unlock even greater liquidity, cross-chain interoperability and seamless access to DeFi protocols across the Aptos ecosystem.
"Aptos was built for real-world open finance applications, and Bitcoin is the linchpin between traditional and decentralized finance markets," said Ash Pampati, Head of Ecosystem at Aptos Foundation. "Being one of the first blockchains to support xBTC is a testament to the network’s high performance, security, and scalability. This opens up new avenues for liquidity and ecosystem growth, while giving developers the confidence and tools to seize them."
How xBTC Works
xBTC brings the value of Bitcoin to the Aptos ecosystem through a simple, secure and transparent process.
For example, when a user deposits BTC on the OKX exchange, an equivalent amount of xBTC is minted on Aptos via the OKX Bridge. To redeem, holders can burn their xBTC on-chain, prompting OKX to release the underlying BTC back to the user's exchange account or wallet address. Once issued, xBTC can be freely used across the Aptos DeFi ecosystem—whether swapping, lending or depositing it as collateral.
xBTC follows a similar operational model to wBTC, with centralized custody and full BTC backing, subject to periodic Proof-of-Reserves disclosures. However, xBTC offers an alternative to wBTC with native minting directly to Aptos via the OKX Bridge.
Monthly Proof-of-Reserves via Merkle-tree audits
102% reserve ratio as of April 2025
Full mint/burn transparency through the OKX Bridge Explorer
Integrated with Aptos DeFi on Day 1
Aptos users will be able to mint xBTC on OKX and seamlessly deposit or withdraw it on the Aptos network for use across a wide range of Aptos-native DeFi applications—from money markets to lending and trading:
Aries Markets (xBTC money-market) is the largest DeFi protocol on Aptos by TVL, offering lending, borrowing and trading with a strong emphasis on efficiency and integration. Aries also offers high LTV options, competitive rewards for stablecoins and deep cross-protocol compatibility.
Echelon Market (xBTC money-market) is a lending protocol offering isolated lending pools and up to 90% LTV for correlated assets. It focuses on capital efficiency and risk segmentation, using adaptive interest rates and advanced liquidation mechanisms to support secure and optimized borrowing and lending on Aptos.
Echo Protocol specializes in liquid staking & restaking and yield solutions to expand the use of aBTC & eAPT across multiple DeFi protocols on Move. It’s the first Bitcoin liquid re-staking and yield layer on MoveVM, securing nearly half of all bridged assets on Aptos.
Hyperion (xBTC-USDC & xBTC-APT LP pools) is a high-performance hybrid DEX combining orderbook precision with CLAMM liquidity, optimized for low-latency, high-frequency trading on Aptos. Leveraging Aptos’ parallel execution, Hyperion delivers dynamic fees, efficient execution, and a flexible architecture aimed at professional traders and institutions.
Thala (xBTC-USDC & xBTC-APT LP pools) is a comprehensive DeFi platform offering capital-efficient AMMs, including Curve-style stablecoin pools, weighted pools with dynamic fees, and LBPs for fair token launches. Its dual-token staking system (thAPT/sthAPT), liquid staking module and validator incentives make it a cornerstone of the Aptos ecosystem.
In partnership with OKX Earn, Aries Markets, Echelon and Echo Protocol will be launching an xBTC "Learn & Earn" campaign—complete educational tasks about xBTC to unlock eligibility for BTC staking campaigns and earn rewards.
TL;DR
xBTC, backed by OKX and available on Aptos, is a 1:1 BTC-backed asset that brings institutional-grade transparency with 102% audited reserves.
With incentives provided via the OKX Learn & Earn campaign, xBTC is available on Aries Markets, Hyperion, Echo Protocol and Thala from day one and will gradually be integrated across the broader Aptos DeFi ecosystem.
This is BTC reimagined for Aptos.