Privacy Policy

Effective October 26, 2026

What Cairn collects

When you sign in with X, Cairn receives your public X account identifier and public profile information. If you link a Solana wallet, Cairn stores the public address, your ownership proof and a summary of public on-chain activity. Cairn also stores the problems, commitments, campaign requests, reports, attributed community reviews, referral relationships and reputation activity you choose to create.

How information is used

We use this information to operate the committed-demand marketplace, prevent duplicate rewards and abuse, review builder campaigns, provide support and understand aggregate product usage. Cairn does not request permission to post on your behalf.

Public information

Published problems, reputation evidence, linked public wallet address, attributed reviews and aggregate commitment counts may be public. Payment-intent amounts are displayed only as aggregate demand signals. They are declarations of interest, not purchases or binding contracts.

Service providers

Cairn relies on X for authentication, Vercel for hosting and operational analytics, and Neon for database hosting. These providers process data under their own terms and privacy policies.

Retention and deletion

We retain account information while your account remains active and as reasonably needed for security and legal obligations. You can permanently delete your account and associated Cairn content using the account controls in the application.

Your choices

You may stop using Cairn, log out, report content, or delete your account. For privacy questions, contact Cairn through @joincairn on X.

Changes

Material changes will be reflected on this page with a new effective date.