Proposal: New CCS Wallet Setup with Collateral · Issue #926 · monero-project/meta
Proposal: New CCS Wallet Setup with Collateral · Issue #926 · monero-project/meta

github.com
Proposal: New CCS Wallet Setup with Collateral · Issue #926 · monero-project/meta

Collateral wallet is 2-3 multi-signature wallet but it doesn't have to be Monero. Bitcoin multi-signature is much more tested and very ease to use using Electrum or similar.
Option two on this topic would be to use Monero multi-signature to keep Collateral.