ACINQ adds offline payment receiving to Phoenix Lightning wallet

The ACINQ team unveiled an update to the non-custodial Lightning wallet Phoenix. The new version enables the mobile app to operate in offline mode.

A new version of Phoenix is out, with the much awaited ‘receive offline’ feature 🥁🥁🥁.

It’s a new magic trick 🪄 that allows you to receive LN payments even when your app is turned off.#Bitcoin #LightningNetwork pic.twitter.com/NpPAcq5h1x

— Phoenix Wallet (@PhoenixWallet) October 20, 2020

The new feature lets you issue invoices and receive payments later, without synchronising with the sender. When funds arrive, the app is launched in the background.

How does this feature work while staying non-custodial? We use a «just in time wake up» notification that starts Phoenix in the background when a payment arrives.

We had to partially re-architecture the app to make this work reliably, but the result is worth it.

— Phoenix Wallet (@PhoenixWallet) October 20, 2020

The developers noted that they partially re-architected the app to improve reliability.

ACINQ released a wallet with Lightning Network protocol support in October 2019. According to the developers, Phoenix provides fast and inexpensive Bitcoin payments.

In August, Lightning Labs introduced a beta version of the LND v0.11 client with support for Wumbo channels. The update increased the Bitcoin transaction limit on the Lightning Network.

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