While we're on the subject of payment hubs / lightning network... I'd love to see somebody write up a higher-level description of what the user experience is like, what communication happens underneath, and what new pieces of infrastructure need to get built to make it all work.
A use-case to start with: A customer starts with eleven on-chain bitcoin. They want to pay for a nice cup of tea. Walk me through what happens before/during/after the transaction, assuming I have a lightning-enabled wallet on my iPhone and the tea shop has a lightning-enabled cash register. Assume neither the customer nor the tea shop are technically sophisticated -- assume the customer is using an SPV wallet and the tea shop is using a service similar to Bitpay. -- -- Gavin Andresen
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