How long does it take

How long does it take to cross the bridge?

From Ethereum to Alephium, bridging is fairly fast! Get the transaction validated on ETH side, let the guardians do their magic, et voilà! You should be out in no time, or roughly 20 minutes.

From Alephium to Ethereum, it will take a bit more time. For security reasons, and because the max chain reorg on ALPH is 200 blocks, the transaction needs to meet two conditions: at least 205 blocks and at least 55 minutes.. Then, after the user starts the redeeming process, the transaction goes through the guardians and on the Ethereum side, taking more or less 15 minutes. So in total, the full process takes a little bit more than 1 hour.

This might evolve to be shorter in the future as the hashrate increases, but for now the decision was taken to ensure the best trade-off in terms of security vs transaction time.