Privacy Policy
The short version: we don't ask for your name or email, there are no accounts with us, no ads and no analytics, and your wallet's key never leaves your device. What you put on a chain is public and permanent.
Who this covers
This policy covers the services the Blockula project runs ("we"): blockula.app and the demo chain at demo.blockula.app with its explorer, wallet and faucet. A chain someone else runs, and the wallet its node serves, is that operator's: they see what their node sees, under their own policy.
What stays on your device
- Your passkey is kept by your device or password manager (Apple, Google, 1Password and so on, under their policies). We never receive it.
- Your wallet's key is derived from your passkey when you unlock, held only in that browser tab's memory, and never stored or sent.
- The browser's storage keeps what the wallet needs to find your account again: your key id and passkey id, your account's address and name, that you agreed to these terms and when, and preferences such as the tutorial's progress, accounts you watch and the network you chose (one cookie names a custom network, so its address can be allowed). None of it is a secret, and clearing this site's data removes it.
What reaches our servers
- Requests. Your browser asks our servers for pages and chain data. Our hosts, Vercel (blockula.app) and Fly.io (demo.blockula.app), see and briefly log what any web server does: your IP address, the time, the page asked for and your browser's user agent, under their own privacy policies.
- Rate limits. The demo node uses your IP address in memory to limit requests and faucet drips (one drip per address an hour, one per IP every ten minutes). It doesn't write it to the chain.
- Transactions you send go to the node and, through it, to every node on that chain (below).
We don't use cookies to track you, run analytics or ads, or sell, rent or share data with anyone for marketing. The site's fonts are served from our own hosts.
What's public and permanent
A blockchain is a public record. Everything you send to one is copied to every node and stays there: your account's address and balance, the payments you send and receive, their memos, your .boo names, your keys' labels, votes, and any GitHub account you link (which also points back from a public gist). Anyone, anywhere, can read it, copy it and keep it, and nobody, including us, can change or delete it. Don't put your real name or anything personal on a chain unless you want it public forever.
Children
Blockula isn't for anyone under 18, and we don't knowingly collect anything about children.
Your choices and rights
You can clear what your browser keeps at any time. We hold almost nothing that identifies you, so there's little for us to show, correct or delete beyond our hosts' short-lived logs; ask, and we'll help with what we can. What's on a chain can't be erased by anyone.
Changes and contact
We'll update this page when what we handle changes, and the wallet asks you to agree again when it matters. Questions go to the project's GitHub issues. See also the Terms of Use.