bitcoin++
§ Project file

Splitbark

The permanent record for this hackathon project: write-up, links, team, tags, and prizes.
Submitted money in movement
Split shared expenses and settle in Bitcoin with Lightning and Bark.
Project image
The write-up
Splitbark is a shared-expense app built for trips, dinners, and events. Create an event, invite friends, and track who paid and who owes what, with equal, exact, weighted, or percentage splits.

When it’s time to settle, participants pay into a shared pot over Lightning. The event owner manages a browser-based Bark wallet and redistributes funds through Lightning addresses, LNURL-pay, Ark addresses, or BOLT12 offers.

Bark’s receive-for-address flow lets contributions reach the event wallet even while the owner’s browser is closed. Wallet keys stay in the owner’s browser, and a recovery phrase lets them restore spendable Ark funds in another browser.