Is there any public information on what hardware, processes and procedures top #bitcoin exchanges are using for their custody solutions? I remember long time ago coinbase was publishing some information on their keys generation ceremony, and cannot find this article any longer... nostr:nprofile1qqsw3znfr6vdnxrujezjrhlkqqjlvpcqx79ys7gcph9mkjjsy7zsgygpz4mhxue69uhhyetvv9ujuerpd46hxtnfduhsz8thwden5te0dehhxarj9ekh2arfdeuhwctvd3jhgtnrdakj7qgkwaehxw309ajkgetw9ehx7um5wghxcctwvshspg7dju