Can one mathematically prove invulnerability to a $5 wrench attack? Edit: Just in case it's not clear, my point is not that specifically bitcoin is more vulner

Can one mathematically prove invulnerability to a $5 wrench attack? Edit: Just in case it's not clear, my point is not that specifically bitcoin is more vulnerable to violence/coercion than other forms of value storage (although I'm pretty sure it is, as there are fewer safeguards/redress mechanisms). My point is that the regardless of the security of the mathematical element, cryptocurrency also has the real-world to contend with, which contains bugs, hardware failure, extortion, phishing, memory loss, theft, etc.