Tools · Bridges & conversion

Taproot Assets

Lightning Labs' protocol for issuing assets — including stablecoins — on Bitcoin and moving them over Lightning rails. Lightning rails for assets, not Bitcoin substrate.

What it is

Taproot Assets (the tapd daemon) is a Lightning Labs protocol for issuing assets — including stablecoins — on Bitcoin L1 via Taproot, and transferring them over Lightning rails. It’s billed as the first multi-asset Lightning protocol on mainnet. v0.8 (2026-06) ships a developer SDK for integrating stablecoins-on-Bitcoin, plus backup & restore, more multi-asset liquidity controls, and faster proof verification.

This card is the protocol/integration lens. For using Taproot Assets to swap BTC↔USDT over Lightning (the venue lens), see its exchange card.

The crucial framing, held explicitly at The Marketplace: Taproot Assets provides Lightning rails for non-Bitcoin assets — it is not Bitcoin substrate. An agent might use a stablecoin over Taproot Assets at the boundary for unit-of-account stability, but the settlement substrate underneath is still Bitcoin. Keeping rails and substrate distinct is the whole point of putting this in Bridges, not the Stack.

When to use it

• Moving stablecoins (or other issued assets) over Lightning rails when an agent needs a stable unit of account at the edge.
• Asset issuance anchored to Bitcoin L1 with Lightning transfer.
• Building on the v0.8 SDK to onboard stablecoin functionality programmatically — note this is developer integration tooling, not a turnkey hosted swap API (see the exchange card’s agent-access note).
• Boundary use cases — pair with the substrate underneath, don’t mistake it for the substrate.

Dependencies

A Lightning node running the tapd daemon — backed by a Bitcoin node (Bitcoin Core, or Neutrino) — with compatible Lightning Terminal versions for grouped-asset channel funding; both ends of a transfer need Taproot-Assets-capable software. The v0.8 SDK eases developer integration but does not remove the node requirement. Rails for issued assets, not trustless substrate — the asset is only as good as its issuer’s solvency and redemption.

Quick start

Run tapd from github.com/lightninglabs/taproot-assets (v0.8 latest); developers can build on the new SDK. Docs at docs.lightning.engineering/the-lightning-network/taproot-assets. Read the Operational Safety Guidelines before any mainnet use.

Gotchas

• The daemon is still alpha-state on mainnet per Lightning Labs’ own safety docs — there can be bugs. v0.8 (2026-06) adds backup & restore (closing an earlier gap) alongside the SDK, multi-asset liquidity controls, and faster proof verification — but the alpha-state caution still stands; read the Operational Safety Guidelines first.
• Issuer trust is not removed — a Taproot Assets stablecoin is only as good as its issuer’s solvency and redemption. This is rails, not trustless substrate.
• Grouped-asset channel funding requires compatible Lightning Terminal versions; confirm your stack lines up.