Old Iron Earns More: A Technical Look at RustChain's Proof-of-Antiquity
Why I'm Writing This
I came across RustChain while looking at experimental consensus mechanisms. The pitch is unusual: a blockchain where a 2003 PowerBook G4 earns 2.5x more mining rewards than a modern AMD Threadripper. Not because it's faster — because it's older and provably real. I dug into the source code to understand whether this is a genuine novelty or another crypto gimmick. This is what I found.
The Core Idea: 1 CPU = 1 Vote
RustChain's consensus, called Proof-of-Antiquity (PoA), replaces hash-rate competition with hardware identity. Instead of "more compute = more reward," the system rewards hardware diversity and longevity. The principle is simple: a machine that has survived 20 years is rarer and more interesting than a rack of cloud VMs you spun up five minutes ago.
