Legal

Privacy Policy

Last updated: 3 November 2026

B20MINER is built so that we need as little about you as possible. There are no accounts, no email sign-up and no advertising trackers. Your keys stay in your wallet or your own browser. This policy explains the little we do record.

1. What this policy covers

This policy applies to b20miner.xyz and its subdomains: the Launchpad (launch.b20miner.xyz), the mining app (app.b20miner.xyz), the documentation (docs.b20miner.xyz) and the servers these use (such as sepolia-api, sepolia-relay and ipfs.b20miner.xyz). The allocation Checker (check.b20miner.xyz) has its own Privacy Notice, which applies there instead.

2. What we never ask for or store

• Private keys, seed phrases or recovery phrases. No B20MINER site or person will ever ask for them.
• Your name, email address, phone number or identity documents.
• Advertising or cross-site tracking cookies, or browser fingerprints.

3. Public blockchain data

When you create, mine, buy, sell or claim a token, your wallet sends a transaction to the Base network. Transactions, wallet addresses and balances on Base are public, permanent and readable by anyone; we do not control them and cannot delete them. Our indexer reads this public data to show prices, trades, blocks and balances in the apps.

4. Data our servers handle

• App requests. The apps ask our indexer (sepolia-api.b20miner.xyz) for public chain data, sometimes for a specific wallet address, such as your own balances on your Profile page. A wallet address is public data, but a request for it can link that address to your connection.
• Relayed transactions. When you mine, signed proofs and transactions may be sent through our relay (sepolia-relay.b20miner.xyz), which submits them to Base. They become public on chain.
• Profile and token images. A token image, or a profile name and picture you choose to publish, is stored on our IPFS node (ipfs.b20miner.xyz). IPFS content is public and can be copied by other IPFS nodes, so it may not be possible to remove it everywhere.
• Request logs. Our hosting and network providers (Vercel and Cloudflare for the websites and our servers, Contabo for the server machines) process your IP address, browser type and the pages you request, as every website must, to deliver pages and to keep the service secure. We use these logs only to run and protect the service and keep them only as long as needed for that.

5. Stored only in your browser

Some settings live in your own browser's storage and are never sent to us: the light or dark theme, your watchlist, chart and trade settings, and the wallet you last connected. If you create a mining wallet, its key is kept in your browser, encrypted with your password. If you choose to keep it unlocked on a device, it is stored there with a key the browser will not export, until you lock it or the time runs out. Clearing your browser data removes all of this; keep your mining-wallet backup file safe.

6. Visitor statistics

We count visits with Vercel Web Analytics, the statistics tool of our hosting provider Vercel. It uses no cookies and does not follow you across other websites. To tell visits apart it uses a hash of the request that is discarded after 24 hours, so it cannot identify you. It records anonymous totals such as which pages are visited, the referring site, and the browser, operating system, device type and country. We use these totals only to understand how the sites are used.

7. Wallets and other services

Your wallet app (for example a browser extension or mobile wallet), the Base network, Uniswap, block explorers such as Basescan, and RPC providers are run by other parties under their own privacy policies. When an app reads the chain directly, the request goes to a public RPC provider, which can see your IP address.

8. Legal basis and sharing

We process the data above because it is needed to provide the service you asked for and because we have a legitimate interest in keeping it secure and understanding its use. We do not sell personal data or share it with advertisers. We share it only with the service providers named above, or when the law requires us to.

9. Your rights

Depending on where you live, you may have the right to access, correct or delete personal data we hold about you, or to object to how we use it. Because we hold very little that identifies you, and because on-chain data and published IPFS content cannot be changed, some requests cannot be fulfilled. You can contact us on @b20miner on X, our only official social account.

10. Children

The B20MINER services are not intended for anyone under 18.

11. Changes

We may update this policy when the services change. The date at the top shows the latest version.