A decentralized physical infrastructure network of real, verified old machines.
DePIN — a Decentralized Physical Infrastructure Network — is a crypto network that uses token incentives to coordinate real-world hardware owned by independent operators. Instead of paying for abstract hashpower, a DePIN project pays contributors for physical infrastructure the network can actually verify and use: wireless hotspots (Helium), storage drives (Filecoin), sensors, GPUs, bandwidth.
The common thread in physical infrastructure crypto is verifiability. If the network cannot prove the hardware exists, the incentive collapses into spoofing. Every serious DePIN lives or dies on that proof.
RustChain applies the DePIN model to a class of hardware most networks ignore: vintage computers. The network is built from real, independently owned machines — PowerPC G4s and G5s, 68K Macs, SPARC workstations, retro x86 laptops, IBM POWER servers — each one physically attesting to the chain through distributed attestation nodes.
In a typical DePIN, hardware provides a service (coverage, storage). In RustChain, the aged silicon itself is the infrastructure: a distributed, verified inventory of working historical computers, kept powered on and out of landfills. DePIN for old hardware means the machine's age and authenticity — not its speed — is what the network rewards.
Proof of Antiquity (PoA) inverts Proof of Work. Where PoW rewards the newest, fastest chips and burns energy in the process, PoA rewards miners in proportion to the age and rarity of their hardware. 1 CPU = 1 vote, weighted by an antiquity multiplier:
ANTIQUITY MULTIPLIERS: PowerPC G4 (2003) ..... 2.5x PowerPC G5 ............ 2.0x PowerPC G3 ............ 1.8x Retro x86 ............. 1.4x Apple Silicon ......... 1.2x Modern x86_64 ......... baseline
A 20-year-old PowerBook out-earns a modern workstation. That flips the incentive of a DePIN for vintage hardware toward preservation: the machines worth running are the ones worth saving.
A DePIN of old hardware invites an obvious attack: emulate a G4 in a VM farm and farm the multiplier. RustChain blocks this with six physical fingerprint checks on every miner:
[1/6] Clock-skew & oscillator drift [2/6] Cache-timing tone profile [3/6] SIMD identity (AltiVec/SSE/NEON bias) [4/6] Thermal drift entropy [5/6] Instruction-path jitter [6/6] Anti-emulation (QEMU/VMware/KVM/Xen)
These measure the physics of real silicon — timing imperfections, cache echo patterns, heat curves — that emulators flatten and hypervisors distort. The server validates raw evidence, not a self-reported pass flag. Detected VMs still attest, but earn roughly one-billionth of real-hardware rewards, so a VM farm is not economical.
RTC is RustChain's native token: a fixed supply of 8,388,608 RTC (2²³, pure binary), with 94% allocated to block mining. Verified miners split 1.5 RTC per 10-minute epoch, weighted by their antiquity multiplier. There is no hashrate race — an old laptop drawing a few watts participates on equal footing with a server rack, and usually earns more per CPU.
> Rewards follow verified physical hardware, not raw compute.
Most DePIN projects reward hardware for the service it provides right now — coverage, storage, bandwidth — which favors buying new equipment. RustChain differs in three ways:
1. The asset is historical. The network coordinates hardware whose value is its age and rarity, not its throughput.
2. Verification is physics-first. Instead of proof-of-coverage or storage proofs, RustChain fingerprints the silicon itself — oscillator drift and thermal entropy can't be bought or spoofed at scale.
3. The externality is preservation. Where other networks add new devices to the world, this depin project keeps existing machines running — e-waste reduction and computer preservation as a side effect of consensus.