Wiezzel / stream-payments

Substrate pallet for stream payments

Stream payments

This pallet supports creating streams i.e. ongoing payments. Once a stream is opened, on every block a specified amount of funds will be transferred from the origin account to the given target account, until the stream is closed.

Interface

Config

• MaxStreams: u32 – The maximum number of streams per account.

Dispatchable functions

• open_stream(origin, target, spend_rate)
  Open a new stream. From the next block on, on each block spend_rate will be transferred to the target account. The stream can be closed by calling close_stream.
• close_stream(origin, index)
  Close a stream. From the next block on, transfers will stop.

Planned features

• Add an optional total spend limit for stream and reserve funds for limited streams.
• Use fixed stream identifiers instead of indices.
• Introduce fees/deposits for opening streams.
• Keep the starting block and total amount transferred (stats for front-end).
• Introduce payment block interval and grace period.