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Launched · coldstar.dev

Coldstar

Any USB drive becomes an air-gapped signing device.

Coldstar boots a minimal Alpine Linux image from a USB stick, generates keys offline, and signs transactions on a machine that never touches the network. The Rust signer locks key material in memory and exposes it for about 100 microseconds before wiping it. On top sits a zero-knowledge layer I wrote from scratch.

• 4× Superteam hackathon winner
• Colosseum hackathon entry
• Co-founded with @devsyrem
• Solana
• Rust · Ed25519 · ZK

coldstar.dev · Source on GitHub

Building

AIDP: Distributed Inference

Serving LLMs on distributed GPUs for less.

A self-hosted LLM inference layer on decentralized GPU capacity: 47% lower serving cost than the OpenAI API at 180 ms median latency and 50 requests a second, with a guardrails gateway and evaluation datasets that score accuracy, safety and latency. A companion GPU video pipeline encodes 16× faster at a VMAF quality score of 95.8.

• vLLM · llama.cpp
• Guardrails + evals
• GPU video pipeline