If you hold real bitcoin and want real ether, your options are a centralised exchange, a wrapped token with a custodian behind it, or THORChain. It is the only production system that settles native assets across unrelated chains using a bonded validator network rather than a bridge holding your collateral, and for holders who refuse wrapped assets that makes it structurally important.
How it works
Liquidity providers deposit an asset alongside RUNE into pools; validators, who bond RUNE far in excess of the liquidity they secure, observe both chains and sign outbound transactions. The economic security model is that bonded RUNE always exceeds pooled value, so attacking the network costs more than it yields. Swaps route asset to RUNE to asset, which is why RUNE's value is load-bearing for the whole system.
The incident history
Three attacks inside a month in mid-2021 cost roughly $13m in total — the two largest at $5m and $8m — exploiting flaws in how its Bifrost bridge parsed inbound transactions. A further exploit in May 2026 drained about $10.8m and froze cross-chain swaps for around thirteen hours. Liquidity providers were reimbursed from the protocol's reserve. In early 2024 the lending product and savers were paused amid concerns about solvency under stress, and the lending design was subsequently wound down. The core swap function has continued operating throughout, but this is a protocol that has repeatedly had to intervene in its own markets.
Costs
There is no fixed fee. THORChain charges a slip-based fee proportional to how far your trade moves the pool, plus an outbound fee to cover network costs. For modest swaps this is competitive; for large ones it becomes expensive quickly, and splitting an order or using streaming swaps — which break a trade into tranches over time — materially reduces the cost.
Who should use THORChain
Holders who want to move between native assets without touching a custodian or a wrapped token, at moderate size, and who accept a protocol with a real incident history. For anything routine on a single chain, a conventional DEX is cheaper and safer. For native BTC to native ETH, there is no comparable alternative.