The author of a potential new Improvement Proposal for the Bitcoin Lightning Network, an off-chain layer-two scaling solution for Bitcoin, has drafted a new proposal to add prediction markets to the technology. Known as NIP-99, if approved this network upgrade proposal will add a predictable event, which can have multiple outcomes, tracked by users. The outcomes can then be wagered on using bitcoin. This would create a prediction market where users can bet on the outcome of any given event. The proposal has not yet been implemented, but is currently being considered by the community and awaits approval.