Stackflow

Stacks needs a p2p payment channel system, to enable off-chain, instant transfers that are still secured on-chain. Stackflow enables this, using SIP-018 structured data signatures to allow users to verify the state of a channel on-chain when necessary. After opening a channel, to make a transfer, a user would just send a signature to the recipient, along with the balances it is confirming. If the balances look good, then the recipient can reply with a signature, so that both parties have a pair of signatures to verify the channel state. These signatures are only needed if something goes wrong and either party needs to prove the true state of the channel. The contract can support STX transfers as well as approved SIP-010 tokens.

I put together some slides to help explain this a bit more.

Check the repo for more details: https://github.com/obycode/stackflow. I’ve got a version of the contract that I’m happy with, and the beginnings of a server implementation, but that part still needs work.

I’d love to hear your feedback and ideas for use cases! Reply to my post or open an issue in the repo.