Compute Marketplaces Pay for Uptime, Not Correctness — A Critical Gap Explained

A technical analysis argues that every major GPU compute marketplace today — including Akash, Hyperbolic, io.net, and x402 — settles payments based on provider liveness or reputation rather than cryptographic proof that a job was executed correctly. In these systems, a dishonest provider can return stale, cached, or random outputs and still receive full payment as long as their server remains online. The author draws a contrast with atomic swaps like HTLCs, where settlement is tied directly to a cryptographic proof embedded in the protocol itself. Emerging hardware features, such as NVIDIA's Device Identity Key on H100 and H200 GPUs, may offer a path toward attestation-based settlement that verifies workload integrity. The piece frames this not as a flaw in any individual platform's design, but as a fundamental, unsolved problem across the entire decentralized compute industry.