Hedwig

https://github.com/luckyyang/hedwig

Welcome to a demo page for Hedwig that allows you to generate zero knowledge proofs proving you received some email and mask out any private data, without trusting our server to maintain a zk-oracle. This demo is just one use-case that lets you update price data on-chain, by verifying emails (and their normally-hidden headers) from Mail Brew daily newsletter, and fetch BTC price.

If you wish to generate a ZK proof of BTC Price data, you must:

1

Signup for newsletter daily digest from Mail brew and create a BTC price feed.

2

In your inbox, find the email from Mail brew and click the three dot menu, then "Show original" then "Copy to clipboard". If on Outlook, download the original email as .eml and copy it instead.

3

Copy paste or drop that into the box below. Note that we cannot use this to phish you: we do not know your password, and we never get this email info because we have no server at all. We are actively searching for a less sketchy email.

4

Click "Generate Proof". Since it is completely client side and open source, and you are not trusting us with any private information.

5

Click "Verify" and then "Update BTC price", and approve!

0x4370da73a076563448CAd69bD11437fa0814713a # Etherum Sepolia

0xB74C6Eaf47ed115Ac175872a35140c5590737D95 # Avalanche

0xB74C6Eaf47ed115Ac175872a35140c5590737D95 # Flare Coston2

0xB74C6Eaf47ed115Ac175872a35140c5590737D95 # Solana neon evm devnet