What is the meaning of 'unilaterally'?
If it means trustless trust, like LN-BTC, It is not an IOU. Unlike this, if some permissions are required, It is an just IOU what I'm talking about.
Liquid requires trust to redeem.
nostr:note1hqcvj22tlxn63zq4n3aq82tvv59g99gff9t0m579hkufznn4c98qfl8hga