Lightning in a Jar Open the wallet
Bitcoin · Pure Lightning · No custodian

Money that
moves like
light.

An on-chain and pure-Lightning bitcoin wallet that runs anywhere. No account. No middleman. No one watching. Your key stays your key.

QR code linking to lightninginajar.xyz/wallet/

Scan it. The wallet opens in your browser and stays on your home screen.

The Lightning in a Jar wallet home screen: a Lightning balance in sats, chain, LSP and quorum status, Send and Receive buttons, and a list of recent on-chain and Lightning transactions.

Five reasons this is a fresh start

  1. Pure Lightning, real bitcoin

    On-chain bitcoin and a Lightning channel you hold. No Spark, no Ark, no custodian you can’t audit.

  2. Anyone with a node can be your LSP

    LiJ is built on the open LIJOX standard: if you run a Lightning node, you can serve LiJ wallets and put your bitcoin to work supporting the network — full control, no gatekeepers, and providers compete for your business.

  3. Your bitcoin key is your Lightning key

    The same 12 words work in any ordinary bitcoin wallet. Done with LiJ? Take your key and walk away, any day.

  4. Always-on is the LSP’s job. Control is yours

    The standard splits the work: the LSP stays online; the wallet keeps the keys, the privacy and the decisions.

  5. Runs anywhere. Even offline

    A WebAssembly app written in Rust — no app store, no account, no gate. Open it in a browser, keep it on your home screen.

  6. Start now →

Your bank would never let you do this.

Three minutes, start to spent

  1. Open the wallet and add it to your home screen.

  2. Connect to an LSP — one is offered; any LIJOX LSP works.

  3. Receive, pay, and show a QR at the counter. That’s the whole product.

It also does these

Merchant register mode

One tap turns the wallet into a customer-facing display for your counter: a QR to pay, the amount in sats and your currency, and a clear “paid” the instant it lands. Japanese and English.

Own your theme

The wallet’s look is yours: colours, wood, paper — set once, kept on the phone.

Delegate payments

Hand someone a chit to pay a bill on your behalf, up to a limit you set, without handing over the wallet.

Operators: the network is open

LIJOX is the open, permissionless standard LiJ speaks. Register your node, run the adapter, and serve wallets on your terms — your liquidity, your fees, your rules.