Headers Chain Verifier

Instantly verify Bitcoin's headers chain in your browser.

This is a simple demo of a chain state proof. It runs the Giza STARK verifier in WebAssembly to verify a recursive proof of Bitcoin's header chain in your browser.

You are synced with the Bitcoin network.

Hint: Hover your mouse over the outputs for more information.

The Bitcoin Program

🚧 Disclaimer: This prototype is work in progress. As of today, we've generated proofs only for the first few thousand block headers. Also this website currently validates only the headers chain, and verifies no transactions yet. We have implemented a full chain proof, however it is still too early-stage to invest significant computational resources in generating a proof over the entire chain. However, as we advance, we will keep this demo updated with longer and more complete chain proofs.