Spark

Stacked, the rebranded Lightning Pay, has emerged as one of the few remaining non-custodial Bitcoin platforms in New Zealand after a wave of mergers and shutdowns. The company today launched a self-custodial Lightning wallet built on Breez and Spark SDKs, enabling users to receive Bitcoin directly into their own wallets and pay utility bills or rent via Open Banking.

Cake Wallet has rolled out Bitcoin Lightning Network integration using Breez SDK and a privacy-focused Spark implementation, enabling instant payments while keeping users in full self-custody and limiting on-chain visibility.

A simple explanation of the cryptography underlying Spark, a layer 2 built using statechains.

A comparison of the trust models and trade offs of Ark and Spark, the two newest entrants to Bitcoin's collection of Layer Two protocols.

LOS ANGELES (CA), 8/18/2025 – BitBit, the self-custodial social wallet that lets users instantly send and receive bitcoin directly in their browser, today announced...

"Trustodial" systems like statechains introduce a dilemma in terms of what constitutes self custodial.

Wallet of Satoshi will be in a beta version, bringing self-custody lightning wallets to Spark platform.

The new SDK implementation, built on top of Spark, offers tools for adding self-custodial Bitcoin payments to apps.

Magic Eden is integrating with Spark to address slow transaction times and high fees on Bitcoin by implementing a native settlement system.

After Tether’s USDT on Bitcoin made headlines last week, the Lightning ecosystem is blossoming.