DePIN — Decentralised Physical Infrastructure Networks — is perhaps the most concrete blockchain use case ever produced. Unlike speculative tokens or financialised NFTs, dePIN projects build real-world hardware networks: wireless towers, GPU farms, storage arrays, weather stations, and dashcam mapping fleets. The token is the incentive mechanism. The hardware is the product.

Traditional infrastructure is built top-down: a corporation raises capital, purchases equipment, deploys it, and charges for access. dePIN inverts this model. Anyone with compatible hardware — a spare hard drive, an idle GPU, a 5G radio — can plug into the network and earn tokens for providing a real service. Those tokens fund ongoing network growth without requiring centralised capital allocation.

Three cryptographic primitives unlock dePIN at scale. First, verifiable contributions via Proof of Location, Proof of Coverage, or Proof of Work — no node can fake its service. Second, permissionless tokenomics: anyone, anywhere can join without approval. Third, on-chain treasury management: protocol revenue is transparent and auditable, not hidden in a corporate P&L.

CIJSS currently tracks 32 active dePIN projects across ten categories. The largest by market cap is Bittensor at $3.5B, followed by Filecoin at $3.2B and Render Network at $2.0B. But market cap tells only part of the story — monthly protocol revenue is a better signal of genuine product-market fit.

Every dePIN project sits somewhere in a physical stack. Compute provides raw GPU and CPU processing power. Wireless builds connectivity. Storage holds data. AI/Data pipelines feed model training. Geo layers map and position the physical world. These layers are interdependent — AI inference needs compute, compute needs connectivity, and everything needs reliable data availability.