Ducat just announced that they are launching on mainnet this week with somewhat dramatic promises:

I posted about this project last year (#1021508): it's a Bitcoin loan company that gives you a stablecoin for your bitcoin (pretty common), except this stablecoin is a Rune on bitcoin.

As was pointed out by @cmd in the comments on that post from last year, there is no way to get around some sort of custody in a loan situation: either your bitcoin is collateral and the lender has some way of accessing it in the event that you don't pay back the loan...or it isn't collateral and we're talking about something else.

I find it frustrating when people make "without giving up custody" claims like this. It doesn't matter to me if you stick your bitcoin in a 2 of 2 multisig where one key is FROST based and implements some kind of contract. At the end of the day, if the oracle colludes with the lender,

I don't even understand why people are pursuing "full self-custody" bitcoin loans -- who in their right mind would lend someone else money unless they had some kind of security. And in the case of bitcoin, security = keys.

Perhaps I am being unfair. You can have a look at their docs. I'd be much more sympathetic to their project if the marketing language was different. Perhaps it is even a better system than Strike loans or the other projects @BlokchainB is exploring (#1515870 maybe not.