Why would said individuals need to know who each other are. They should all act independently of each other and simply hand off their payload to the recipient.

Why would said individuals need to know who each other are. They should all act independently of each other and simply hand off their payload to the recipient. Assume the individuals in my scheme are all lawyers at different firms around the world that all have instructions to hand an envelope they do not know the contents of to designated individuals in the event of my death. This is a well understood scheme. I just do it with a redundant quorum so I can avoid any one lawyer being able to consume the contents of said envelope themselves and tolerate some of them failing to perform their duties. As far as the hardware the recipient has access to, that can be duplicated to any similar off the shelf hardware via a 24 word paper backup and storing paper redundantly and durably is a solved problem. These schemes use well understood standard cryptographic protocols as well. Shamirs secret sharing and bip39. The rest is just human logistics.