Privacy
ChainMind reads a public blockchain and explains it. There is no signup, no email, no password and no payment, so most of what a privacy policy usually covers does not exist here. This page says exactly what is kept, for how long, and what leaves our servers.
It covers chainmind.fun and the ChainMind Market Research iOS app. ChainMind is an independent product and is not affiliated with, endorsed by, or sponsored by Robinhood Markets, Inc. or its affiliates.
Last updated 24 September 2026
Four things, and nothing else.
The question you type is sent to the language model to be answered. A shortened copy — the first 200 characters — is also kept in a recent-activity list so the site can show what is being asked and count how much it is used.
Do not paste anything private into the question box. It is a search field for a public blockchain, and it should be treated like one.
Your IP is used to rate-limit requests and to count visitors. It is never stored in readable form: it is combined with a server-side secret and put through SHA-256, and only that hash is written down. The result cannot be turned back into an IP address, and the same IP produces a different hash on a deployment with a different secret.
Connecting is optional and nothing on the site requires it. If you do, your address is stored so your saved history can be found again, and it appears in the recent-activity list in shortened form (0x1234…abcd). Unlike an IP, an address is not hashed — it has to be readable for your own history to be returned to you.
Questions and answers from a signed-in session are saved so you can come back to them. They are deleted automatically after 90 days, and you can delete them yourself at any time from the wallet menu. Signed out, nothing is saved against you at all.
When you connect, your wallet is asked to sign a message proving you control the address. That is all it is. It is not a transaction: it cannot move funds, cannot grant a spending allowance, cannot approve a contract and costs no gas.
ChainMind never takes custody of anything and has no ability to move your assets. If any page here ever asks you to approve a transaction, do not sign it — and please tell us.
Answering a question means sending it, along with the on-chain facts gathered for it, to a language model run by Groq. Your question text leaves our servers at that point and is handled under Groq's own terms and privacy policy. Your wallet address, your IP and your saved history are not sent with it.
The other services involved do not receive anything personal:
The ChainMind Market Research app for iPhone and iPad talks to the same servers as the website and stores the same things — nothing extra is collected because it is an app. It does not use App Tracking Transparency, advertising identifiers or third-party analytics, and it never asks for seed phrases or private keys. Using it as a guest stores nothing tied to you beyond the hashed IP described above.
If you sign in with a wallet in the app, you can delete everything held under that address — saved history, session and any device registration — from Profile → Delete account, or by writing to privacy@chainmind.fun.
The blockchain is not ours. Everything ChainMind shows about an address — its balances, transfers and transactions — is public, permanent, and was already there before you visited. Deleting your history here removes your questions from our database; it does not and cannot remove anything from the chain, and every other block explorer will still show the same records.
If this policy changes in a way that affects what is stored, the date at the top changes with it. Questions about any of it go to privacy@chainmind.fun.
Our terms of use cover what ChainMind is for and the limits of what it tells you.