We pay monthly for cloud storage and assume it’s reliable, but we’ve never stopped to ask: who guarantees that data will be accessible in a hundred years? Arweave’s permweb uses a novel proof‑of‑access mechanism that ties data permanence to mining incentives. Once you pay the upfront storage fee, that data lives forever on the network. For historical archives, legal records, and immutable smart contract states, this isn’t a luxury — it’s the only responsible way to preserve information. This vault thinks about permanence the way Satoshi thought about proof‑of‑work — as a foundational trade‑off.