[Bitcoin-development] Payment Protocol Proposal: Invoices/Payments/Receipts

[Gavin]

Supporting DNSSEC/DANE in the future when they are widely deployed is a great idea.

Note that the x509chain field is 'repeated', and any repeated field may have zero entries. So I would suggest supporting other PKI systems in the future by adding optional new fields (for maximum compatibility or security merchants might want to include both a x509chain AND 

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Gavin Andresen