Boltz

What is Boltz

Boltz operates as a non-custodial Bitcoin bridge focused on cross-layer swaps. As of 2026-05-30, the service supports Bitcoin main chain, Lightning Network (LN), Liquid Network, Rootstock, TBTC, WBTC, USDT, and USDC. The platform uses submarine swaps-atomic swaps via Hashed Timelock Contracts (HTLCs)-to enable trustless exchanges where users retain control of their private keys throughout the transaction flow.

The official site describes Boltz as enabling users to "swap between different Bitcoin layers and stablecoins while staying in full control." No account registration is required to initiate swaps.

How no-KYC is it?

Boltz requires no identity verification. Multiple third-party sources confirm the absence of KYC procedures: blockdyor.com notes it operates "without requiring user accounts, Know Your Customer (KYC) processes, or any personally identifiable information." The non-kyc.com listing explicitly categorizes Boltz as avoiding KYC procedures. No email, phone number, or government ID is requested to complete swaps.

The service supports Tor access for enhanced anonymity, a feature highlighted by privacy-focused reviewers. This aligns with the platform's positioning for users prioritizing financial privacy.

Privacy & security

Boltz's non-custodial architecture represents its core security feature-funds remain under user control rather than held in exchange wallets. The HTLC-based swap mechanism ensures atomic execution: either both sides complete or neither does, eliminating counterparty risk.

However, privacy considerations exist. A Reddit discussion in r/BitcoinBeginners notes that Lightning node IDs are visible to Boltz, and channel open/close transactions on the Bitcoin main chain create linkable on-chain footprints. Users seeking strong privacy should understand these limitations; Boltz knows the node ID involved in Lightning swaps, though not necessarily the user's identity.

No major security breaches or custodial losses appear in the evidence. The open-source nature of the underlying technology (submarine swaps on Bitcoin) allows for public audit of the contract logic.

Payments, fees & limits

The official site does not publish specific fee schedules or swap limits in the crawled content. Third-party reviews mention competitive fees typical for non-custodial swap services, but exact percentages or minimum/maximum swap sizes are not verifiable from the evidence. Users should verify current rates directly on boltz.exchange before initiating transactions.

Supported assets include:

• Bitcoin (on-chain)
• Lightning Network BTC
• Liquid BTC
• Rootstock
• TBTC
• WBTC
• USDT
• USDC

This represents expansion beyond the older kycnot.me listing, which only mentioned Bitcoin, Lightning, and Liquid.

User experience & support

Boltz emphasizes simplicity in its positioning. The blockdyor.com review describes "a user-friendly interface" with straightforward swap execution. No advanced trading features-leverage, margin, or order books-are offered; the service focuses exclusively on direct conversions between supported assets.

Support channels are not detailed in the evidence. The absence of user accounts may limit traditional ticket-based support options. Trustpilot shows a 3.7 rating per non-kyc.com, suggesting mixed user experiences, though the volume and nature of complaints are not specified.

Who it's for

Boltz suits Bitcoin users needing to move value between layers without custodial risk or KYC friction. Common use cases include:

• Lightning liquidity management (inbound/outbound channel balancing)
• Moving funds from Liquid sidechain to main chain or Lightning
• Stablecoin access (USDT/USDC) without centralized exchange registration
• Privacy-conscious users seeking Tor-accessible swap infrastructure

The service is not designed for active traders needing limit orders, charting, or derivatives. It competes with other non-custodial swap services and centralized bridges, differentiating through its Bitcoin-native, account-free model.