Every fedimint and bitcoin cusodian should use this practice for proof of reserves.
Discussion
Would love to see that on fedimint! nostr:nprofile1qqspg8fq209jj56663d2n6r9ehkyjffy7rkqqejfdwvtwzva426avkqprfmhxue69uhkummnw3ezu7n9vfjkget99e3kcmm4vshsz9thwden5te0wfjkccte9ejxzmt4wvhxjme0dwsgf8 has talked about having guardians periodically perform threshold signing to create a nostr note that contains the attested reserves, which is signed by the federation’s aggregate pubkey.