BitBit

BitBit is a self-custodial Bitcoin wallet for social contexts, delivered as a browser extension, running on Spark, a Bitcoin layer two, with full Lightning Network support. It maps a social handle directly to a receiving address so users can tip content in sats with one click while scrolling a feed; recipients who have not yet created a wallet can still be paid and must claim within 21 days, after which funds return to the sender automatically. Transfers are committed in batches as a statechain on Spark, where updates initiated by the user are co-signed by participants and only settle to Bitcoin layer one at exit, so confirmation does not wait for mainnet blocks; Lightning channels handle small high-frequency payments.

Assets supported include BTC, stablecoins and LRC-20 tokens, and SOL can be converted into Bitcoin instantly. Private keys stay with the user, login uses passkeys or social credentials, and the seed phrase remains exportable from settings for backup.