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To: Bitcoin Dev <bitcoin-development@lists.sourceforge.net>
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Subject: Re: [Bitcoin-development] Payment Protocol Proposal:
Invoices/Payments/Receipts
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>=20
> The SignedReceipt message is useful in the sense that it shows
> confirmation by the merchant, but if you don't get one, you can still
> prove you paid the invoice. So from this perspective perhaps
> SignedReceipt should be renamed to Acceptance or something like that,
> and then the spec should call out that a signed invoice plus accepted
> Bitcoin transactions is mathematically a proof of purchase.
Which is why I find the "SignedReceipt" somewhat superfluous. If you =
implement a payment system, like bit-pay/wallet you are likely to double =
that through some sort of e-mail receipt anyway.
Further, the inclusion of x509 is not really needed in the spec - you =
don't need to sign the invoice with an x509, you can use the payment =
key. The proof would still be equally binding, and valid also for non =
holders of x509 (server) certificates (like normal people).
Finally, host certificates does not normally keep in their "purpose" =
S/MIME Signing. So you are bending the intended use of the x509 =
certificate anyway.
/M
>=20
> =
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