Privacy Policy - Archeum

Last updated: July 15, 2026

Overview

Archeum is a decentralized personal-infrastructure app - the wallet and key-management app for the Archeum network. The app stores cryptographic keys and identity data on your device and runs your node (the infrastructure that stores your data) on your own phone. Archeum the publisher does not operate servers that receive or store your data.

Data stored on your device

The app stores the following locally, in Android's encrypted secure storage:

• Your wallet private key (Ed25519) and recovery phrase
• Your AGE encryption keypair
• Your login passphrase, if you set one to sign in on another device
• Your Archeum handle(s) and node identity
• App settings and preferences

These values never leave your device, except as described below.

Your node runs on your phone

Your Archeum node runs as a background (foreground) service on your phone, anchored to the device's secure hardware (StrongBox). The node stores your data locally and answers app requests on your behalf. There is no third-party server, VPS, or cloud account holding your data - the device in your pocket is the node.

Other apps on the Archeum network store their data on your node too, each in its own isolated namespace. Those apps are each responsible for their own data practices, and Archeum the publisher never receives or accesses any data stored on your node.

Data sent over the network

• The Archeum mesh: handle ownership is settled by the network's own feeless consensus, which the nodes run among themselves. The nodes produce blocks and chain them together, so it is a blockchain in the plain sense. What it holds is small: the current state of who owns what, plus the proofs to verify it. It is not the kind of ever-growing public ledger that keeps a permanent record of every past action. To claim or resolve a handle, your node trades signed messages with other nodes over the mesh, and, as on any peer-to-peer network, the peers you connect to can see your IP address. There are no fees, no gas, no mining, and no outside RPC provider.
• Your node: apps connect to the node on your phone over QUIC (UDP) to read and write your data. That data is under your control.

Data we (the publisher) receive

Crash reports. When the app hits a fatal error, it automatically sends a crash report to the Archeum developer node (@archeum) so we can find and fix bugs. A report contains the error and stack trace, your app version, your device model and OS version, and a random per-install identifier, and it is associated with your pseudonymous Archeum handle. It does not include your real name, your messages, your files, your keys, or your IP address. Reports are captured with the Sentry SDK but routed over the Archeum network to our node - they are not sent to Sentry's servers, and we use no third-party analytics or crash-reporting service. Crash reporting is on by default but optional: you can turn it off at any time in Settings → Data & Privacy → Crash Reporting, and when it is off nothing is sent.

Beyond crash reports, we receive no analytics, no telemetry, and no ad tracking.

Permissions

• Internet: connect to the mesh and serve your node.
• Notifications: Android requires a visible notification while the node runs as a foreground service.
• Camera: scan a QR code, either a recipient's wallet when you send Arc or a computer's code when you link a desktop to your account. The camera runs only while the scanner is open, and no images are stored or uploaded.
• Battery optimization exemption (optional): so the node can stay reachable in the background. You control whether to grant it.

Local network communication

During first-time node provisioning, the app may talk to a node on the local device using plaintext HTTP (e.g. http://[::1]:8080). This traffic never leaves the device. Once running, all communication with your node uses encrypted QUIC (TLS 1.3).

Third parties

• Google Play Services - for app distribution and (where used) hardware key attestation.

Archeum does not run on any outside blockchain such as Ethereum or Base, and it uses no RPC provider, transaction bundler, or gas. Handle ownership is tracked by the network's own consensus, which the nodes run themselves. We send no data to any third-party analytics or crash-reporting service: crash reports are captured locally with the Sentry SDK and routed to our own Archeum node, as described above.

Data deletion

You can delete your account at any time: Settings → Delete Account. This releases every handle your wallet owns back to the network, wipes all data stored on your node (across every app namespace), and erases all local data (wallet keys, recovery phrase, login passphrase, secure storage). See archeum.io/delete-account for the full process.

Handle ownership lives in the network's consensus, which tracks the current state of who owns what rather than a permanent history. When you confirm deletion, the flow releases your handle right then and returns it to the unowned pool, so someone else can claim it immediately, and no lasting record of your past ownership remains.

Children

Archeum is not intended for users under 18.

Changes to this policy

When this policy changes materially, we will update the date at the top and highlight changes in the app's release notes.

Contact

Questions: [email protected]