Self-custody of merchant payins

Hello

I've read through your doc today. Thank you for making it clear.

I'm interested to know about the trustlessness of your payin workflow.

For example

To what extent do EPs have custody over EPM payins?
Do payins from EPM customers go straight to a self-custodial wallet controlled uniquely by the EPM?

The reason for these questions relates to my own company's tech which permits embedded secured lending by using borrower payins onchain to repay a loan and/or act as security for the loan.

Happy to elaborate further

Best regards

Mike