{"@context":"https://schema.org","@type":"FAQPage","mainEntity":[{"@type":"Question","name":"What does Lantern Zero do?","acceptedAnswer":{"@type":"Answer","text":"It wakes your Zcash wallet every 30 minutes so it stays in sync in the background. If you turn on scanning, it also tells you within seconds when a payment arrives."}},{"@type":"Question","name":"How do I get notified when I receive a Zcash payment?","acceptedAnswer":{"@type":"Answer","text":"Connect a wallet with a Lantern Zero connection URL. In the default mode you stay in sync through scheduled wake-ups and your wallet finds payments when it scans. Turn on scanning if you want a push within seconds of a shielded payment, including in the mempool."}},{"@type":"Question","name":"Can my wallet get a push notification for a shielded Zcash payment?","acceptedAnswer":{"@type":"Answer","text":"Yes, with scanning mode on. Your wallet lends an incoming viewing key for a short in-memory lease. The server watches new blocks and the mempool, then sends an encrypted push. Default mode only sends the same contentless wake-up to every device; it does not alert you to individual payments."}},{"@type":"Question","name":"Which wallets support it?","acceptedAnswer":{"@type":"Answer","text":"None yet. The protocol is a draft and the server is a prototype. Wallet developers can start from the protocol spec today."}},{"@type":"Question","name":"How do I connect a wallet?","acceptedAnswer":{"@type":"Answer","text":"Paste or scan a connection URL in your wallet's settings, the way you'd set a custom server address. Some wallets may set it up for you."}},{"@type":"Question","name":"How much does it cost?","acceptedAnswer":{"@type":"Answer","text":"Scheduled wake-ups are free. Scanning mode and plans for wallet companies are paid, in shielded ZEC on this website; prices aren't set yet. Neither needs an email or personal details."}},{"@type":"Question","name":"Can I run my own server?","acceptedAnswer":{"@type":"Answer","text":"Yes. The server is open source under MIT or Apache-2.0, and self-hosted servers use the same connection URL. A ready-made self-hosting kit is in progress."}},{"@type":"Question","name":"Can Lantern Zero spend my funds?","acceptedAnswer":{"@type":"Answer","text":"No. Your spending keys never leave your wallet. The server never asks for them."}},{"@type":"Question","name":"What does the server learn in the default mode?","acceptedAnswer":{"@type":"Answer","text":"That your account exists and which devices to wake. It never sees a viewing key, and it never sees your IP address, because requests go through an independent relay."}},{"@type":"Question","name":"What does scanning mode reveal?","acceptedAnswer":{"@type":"Answer","text":"While you lend a viewing key, the server can see the payments you receive to it. The key lives only in memory for 24 hours to 7 days. For the least exposure, use a separate receiving account for scanning."}},{"@type":"Question","name":"Can Apple or Google see my payments?","acceptedAnswer":{"@type":"Answer","text":"No. Every push is encrypted to your device. They can see when a push arrives, so with instant alerts they could tell when you were paid. Private alerts avoid this by waiting for the next scheduled ping."}},{"@type":"Question","name":"How do I delete my account?","acceptedAnswer":{"@type":"Answer","text":"From your wallet. Everything tied to the account is removed from our live systems immediately, and from backups within 35 days."}},{"@type":"Question","name":"Why every 30 minutes, and not every block?","acceptedAnswer":{"@type":"Answer","text":"Apple asks apps to receive no more than two or three background pushes an hour. After the NU7 upgrade, a block comes every 25 seconds, so each wake checks about 72 blocks."}},{"@type":"Question","name":"How fast is a payment alert?","acceptedAnswer":{"@type":"Answer","text":"With scanning on, the server can send an alert within seconds after a shielded payment appears in the mempool or in a new block. Default wake-ups run every 30 minutes and do not carry payment details."}},{"@type":"Question","name":"What if my phone misses a wake?","acceptedAnswer":{"@type":"Answer","text":"Nothing breaks. Phones sometimes delay or skip background pushes, and your wallet catches up at the next wake or when you open it."}},{"@type":"Question","name":"Does Lantern Zero replace my light wallet server?","acceptedAnswer":{"@type":"Answer","text":"No. Your wallet still downloads compact blocks from the light wallet server it already uses. Lantern Zero tells it when to sync and, in scanning mode, which blocks to scan first."}},{"@type":"Question","name":"Does it work with Tor?","acceptedAnswer":{"@type":"Answer","text":"A self-hosted server can be reached over a Tor onion service instead of a relay. The hosted service always uses Oblivious HTTP relays."}},{"@type":"Question","name":"What happens after Zcash's Tachyon upgrade?","acceptedAnswer":{"@type":"Answer","text":"Tachyon will change how wallets find shielded payments, so we expect the scanning service to retire when it ships. The wake-up channel is designed to keep working after that. Your wallet's own background schedule comes close to a keyless ping, especially on Android; the ping is one more wake source, and we have not yet measured whether it is more reliable than what the OS provides on its own."}}]}