Stacks sBTC
VerifiedsBTC is a 1:1 Bitcoin-backed SIP-010 token on the Stacks Bitcoin-L2, brought into existence by a threshold-signature group of community signers who lock real BTC in a multisig taproot script on Bitcoin L1.
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The Problem
Bitcoin's $1T+ in liquid capital is largely idle. Existing BTC-in-DeFi solutions either rely on centralised custodians (WBTC), require trust in a separate threshold network with its own token (tBTC), or wrap to a liquid-staking derivative on a different chain — none of which gives Bitcoin holders direct programmable BTC under Bitcoin's own security.
The Solution
sBTC mints a 1:1 BTC-backed SIP-010 token on Stacks against BTC locked in a Bitcoin-L1 multisig taproot script, signed by a 15-of-N threshold-signature set under 70% consensus. The peg is custodial today but designed to migrate to a permissionless Stacker-based signer set, with on-chain proof-of-lock visible directly on the Bitcoin chain.
Why it Matters
Bitcoin-native peg (lock UTXOs verifiable on Bitcoin), Clarity smart-contract programmability on Stacks, and a documented path from bootstrap multisig to permissionless Stacker-based signers. Sits between custodial WBTC and decentralised tBTC v2 in trust model, but uniquely lives on a Bitcoin-anchored L2.
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View allFrequently asked questions about Stacks sBTC
What is Stacks sBTC?+
Stacks sBTC is a Bridge protocol operating on Stacks, Bitcoin. sBTC is a 1:1 Bitcoin-backed SIP-010 token on the Stacks Bitcoin-L2, brought into existence by a threshold-signature group of community signers who lock real BTC in a multisig taproot script on Bitcoin L1.
How does Stacks sBTC work?+
sBTC mints a 1:1 BTC-backed SIP-010 token on Stacks against BTC locked in a Bitcoin-L1 multisig taproot script, signed by a 15-of-N threshold-signature set under 70% consensus. The peg is custodial today but designed to migrate to a permissionless Stacker-based signer set, with on-chain proof-of-lock visible directly on the Bitcoin chain.
Is Stacks sBTC safe?+
DeFi Sentinel rates Stacks sBTC A with a safety score of 71/100, indicating low-to-moderate risk. The score reflects five risk dimensions: smart contract & technical risk, economic design & market risk, governance & centralization, sustainability & competitive position, and reputation & social trust. Stacks sBTC has 3 audits on record. DeFi Sentinel's analysis flagged 1 high, 6 medium, 3 low risk alerts across Smart Contract & Technical Risk, Sustainability & Competitive Position, Economic Design & Market Risk and Governance & Centralization. As with all DeFi protocols, residual risk remains and users should review the full risk breakdown before depositing.
What is the safety score of Stacks sBTC?+
Stacks sBTC has a DeFi Sentinel safety score of 71/100 (rating A), last updated September 17, 2026. The score is computed across smart contract & technical risk (30%), economic design & market risk (25%), governance & centralization (20%), sustainability & competitive position (15%), and reputation & social trust (10%).
Which chains does Stacks sBTC support?+
Stacks sBTC is deployed on Stacks, Bitcoin.
Has Stacks sBTC been audited?+
Yes. Stacks sBTC has 3 audit reports on record from firms including Asymmetric Research, OtterSec, Clarity Alliance. Audit reports and dates are linked under the Resources tab on this page.