Building Financial Infrastructure on Bitcoin with Ark

Two implementations of the Ark proposal, Arkade and Bark, are now live on the Bitcoin mainnet, enabling self-custodial payments and financial infrastructure via Virtual Transaction Outputs (VTXOs). Arkade is expanding into assets, swaps, and complex financial applications, while Bark focuses on payments and Lightning interoperability. Additionally, Lightning Labs has introduced Wavelength, an alpha-stage toolkit using an Ark-like settlement layer.