<oembed><type>rich</type><version>1.0</version><author_name>npub1s4lj77xuzcu7wy04afcr487f0r3za0f8n2775xrpkld2sv639mjqsd44kw</author_name><author_url>https://nostr.ae/npub1s4lj77xuzcu7wy04afcr487f0r3za0f8n2775xrpkld2sv639mjqsd44kw</author_url><provider_name>njump</provider_name><provider_url>https://nostr.ae</provider_url><html>📅 Original date posted:2012-11-27&#xA;📝 Original message:RE: SignedReceipt:  I agree it is superfluous.  I&#39;ll remove it from the spec.&#xA;&#xA;RE: &#34;it is controversial use of the host key to use it for digital&#xA;signing of documents&#34;  :  The idea of embedding a x509 certificate&#xA;chain comes from the IETF&#39;s JSON Object Signing and Encryption working&#xA;group &#34;JWS&#34; specification, so I can&#39;t be TOO controversial.&#xA;&#xA;RE: the ifex-project and other electronic invoicing standards:  Thanks&#xA;for the pointers, Walter! I&#39;m all for adopting the best ideas that&#xA;have come before, as long as we end up with something useful and small&#xA;enough to convince ourselves it is as secure as we can make it. I&#xA;looked at the ifex spec, and quickly got lost. It would help me if you&#xA;could write up what our motivating use cases would look like if&#xA;implemented on top of ifex.&#xA;&#xA;RE: jgarzik&#39;s suggestion to allow txids in the Payment: that worries&#xA;me, because it is trivial to create several different variations of&#xA;the same transaction (same inputs to same outputs) with different&#xA;txids (re-signing inputs uses a different signature nonce, which&#xA;changes the signature/txid, for example).&#xA;&#xA;RE: using self-signed certificates:  as Mike said, I assume Bitcoin&#xA;clients will have some way of managing root certificates, so experts&#xA;could add trusted self-signed certs.&#xA;&#xA;-- &#xA;--&#xA;Gavin Andresen</html></oembed>