"Is there a way to secure a bitcoin wallet on a machine someone else has root access to (either your datacenter's staff with physical access, or the people with

"Is there a way to secure a bitcoin wallet on a machine someone else has root access to (either your datacenter's staff with physical access, or the people with hypervisor access to the hardware your vm is running on)?" Probably not, _maybe_ trusted computing could help[1]. But it might secure enough if you had a special piece of hardware that stored the bitcoin-key and did all the signing operations. I believe things like these exists for Certifications and other signing-keys. I doubt VeriSign stores their root certificates on just-another-box :) [1] In theory, TC could "anchor" your data to the hardware chip on the motherboard, and breaking it would require physical tampering.