Hi all I had a question regarding TON spaces. as I understand, it is a non-custodial version of the previous ton wallet. But it has an option to have email recovery, and it can be imported on other devices with some numbers sent to email. So how can it be non-custodial with having email recovery?

Are there any documentations explaining how it works under the hood? I can guess it is using that number as a seed to recover the private key, but how is that seed is stored/generated?

Also are there any smart-contracts which associates my TON space with my telegram_id / email?