https://cointelegraph.com/news/bitpay-proposes-zero-confirmation-instant-payments-solution
Bitpay proposes zero confirmation solution for faster Bitcoin transactions and introduces clearing operator between the two interacting parties. Bitpay has taken aim at solving the issue of slow confirmations on the Bitcoin network by proposing an open-standard “Impulse” system based on multiple payment channels. Designed to be “as trustless as possible,” the network would gather immediately available funds through previously confirmed payment channels.