Why would anyone mine crypto on a vintage Mac?

RustChain inverts the usual mining economics. Proof of antiquity rewards verified old hardware with higher attestation multipliers — a PowerPC G4 attests at 2.5x base weight versus 1.0x for a modern x86 CPU — so a 20-year-old Mac is a first-class citizen rather than e-waste.

Can I fake a vintage Mac with an emulator like SheepShaver?

The attestation is designed to catch that. Fingerprint checks measure clock-skew, cache-timing behavior, SIMD timing bias, and anti-emulation signals, and the network flags known emulator ROM hashes and clusters of identical ROMs. Emulators and VMs earn effectively nothing.

Is mining RTC on a G4 or G5 profitable?

RTC is a small experimental network token, not an income scheme. Treat it as a way to give real vintage hardware a verifiable role in a live network, with rewards proportional to attestation weight — not as a profit calculation.

How to Mine Crypto on a Vintage Mac: a Proof of Antiquity Mining Guide

Most blockchains reward whoever burns the most electricity on the newest silicon. RustChain does the opposite: its proof of antiquity consensus rewards verified old hardware. This guide shows how to mine crypto on a vintage Mac — specifically, how to mine RTC on PowerPC G4 and G5 machines.

mine crypto on a vintage Macproof of antiquity RTC miningPowerPC G4 G5 RustChain

Why vintage Macs are first-class miners here

RustChain uses a "1 CPU = 1 vote" attestation model weighted by hardware age. A PowerPC G4 attests at a 2.5x base antiquity multiplier and a G5 at 2.0x, while a modern x86 machine gets 1.0x. The multipliers decay slowly as the chain ages, but the ordering stays: older verified silicon carries more weight. Elyan Labs runs its own fleet this way — PowerBook G4s, a dual-processor G4 MDD, and dual 2.0 GHz G5 towers all attest daily alongside an IBM POWER8 server and modern machines.

Step-by-step

Pick the machine. Any working PowerPC G4 or G5 Mac qualifies. It needs a network connection and enough of an OS to run the miner (older Macs on the LAN can go through a small proxy if their TLS is too old to talk to the node directly).
Get the miner. The open-source miner and node code live in the RustChain GitHub repository. The miner is Python with a hardware-fingerprint module alongside it.
Choose a wallet identity. Your miner ID is your reward address on the ledger. Pick a name, keep it consistent.
Attest. On startup the miner runs hardware fingerprint checks: clock-skew and oscillator drift, cache-timing profile, SIMD (AltiVec) timing identity, thermal drift entropy, instruction-path jitter, and anti-emulation detection. These measurements are what prove your G4 is a G4.
Stay attested. Attestations expire after 24 hours, so the miner loops. Rewards settle each epoch, split among attested miners by antiquity weight.

What about emulators and VMs?

They are detected on purpose. Emulators flatten the timing signals that real aging silicon produces, and known emulator ROM images (SheepShaver, Basilisk II) are recognized — as are suspicious clusters of "different" machines reporting identical ROMs. Virtual machines are fingerprinted too and earn effectively nothing. The point of proof of antiquity is that the hardware must be physically real.

The bigger picture

Mining RTC on a G4 is one expression of the same idea behind running an LLM on a Nintendo 64 or local AI on a PowerPC Mac: old machines you own can still do real, verifiable work. That thesis is written up in Proof of Physical AI.

RTC is an experimental network token. This is a hobbyist guide, not financial advice. By Elyan Labs. Every CPU has a voice.