nostr:npub1sqzr42dj8vx32yd5jcvvl3ytux45kl0etgf6y2ymjvmd7lqmuwmqk9vk7v is an exchange that also contains a non-custodial #Bitcoin wallet.
They exchange Bitcoin directly into your own wallet and are currently integrating the Lightning network, also on a non-custodial way.
Relai is a Swiss company and unfortunately only available for European customers at the moment😕