Fixed rate is live on BOB Gateway

Every cross-chain swap shows you a number before you commit. Almost none of them deliver it. Between the quote and settlement the price moves, a DEX leg fills at a slightly worse rate, a bridge takes its cut, and what arrives is a little less than what you were shown. The industry calls the difference slippage and treats it as a fact of life.

For native BTC to USDT on Ethereum, BOB Gateway has now removed it. The output in your quote is a fixed rate. If the app says 77,897.00 USDT, you receive 77,897.00 USDT.

What fixed rate means

Two things get confused in swap interfaces, so it is worth being precise.

• Spread is the difference between what you put in and what you are quoted out. It is visible up front, and it is how a solver prices its service.
• Slippage is the difference between what you were quoted and what you actually receive. Nobody knows it in advance, and it is almost always against you.

A fixed-rate swap has a spread and zero slippage. You can compare the quote against any other venue before you send a single sat, and the comparison holds after settlement.

Why BTC to USDT first

BTC to USDT on Ethereum is the route you use most. It was the top route on BOB Gateway over the last 30 days by volume. Treat it as a pilot - we’ll expand the coverage, based on user feedback.

How to use it

Nothing changes in the flow. Head to BOB Gateway, pick native BTC as the input and USDT on Ethereum as the output, and send one Bitcoin transaction. The quoted output is signed and valid for one minute, so what you accept is what Gateway has committed to.

Integrators get the same guarantee through the API. The outputAmount in a get-quote response for this route is the amount that will be delivered, not an estimate.

What comes next

The fixed-rate guarantee currently covers one direction of one route. If the pilot is successful and we receive positive feedback on fixed rate as a feature, we plan to extend it, starting with the other direct stablecoin routes and then the wrapped BTC routes, as we move more settlement onto solver inventory and off third-party legs.

If you have been pricing BOB Gateway against other bridges by their quotes, you can now price it by what you actually receive. For this route, they are the same number.

Swap BTC to USDT at a fixed rate on BOB Gateway.