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Cc: Bitcoin Dev <bitcoin-development@lists.sourceforge.net>
Subject: Re: [Bitcoin-development] Payment Protocol Proposal:
	Invoices/Payments/Receipts
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> OK. I want to keep the signature field required, though, so how about:
>
> signature: digital signature over a protocol buffer serialized variation of
> the SignedPaymentRequest message where signature is a zero-byte array and
> fields are serialized in numerical order (all current protocol buffer
> implementations serialize fields in numerical order), using the public key
> in pki_data.

Looks good to me.