<oembed><type>rich</type><version>1.0</version><author_name>npub13lftpp7g0zz6pjhvjhqqlka53e358xctk4c4fzr52yywt5cqhkvqe273cc</author_name><author_url>https://nostr.ae/npub13lftpp7g0zz6pjhvjhqqlka53e358xctk4c4fzr52yywt5cqhkvqe273cc</author_url><provider_name>njump</provider_name><provider_url>https://nostr.ae</provider_url><html>📅 Original date posted:2014-09-12&#xA;📝 Original message:On 12 Sep 2014, at 11:55 , bitcoin-development-request at lists.sourceforge.net wrote:&#xA;&#xA;&gt; The hash is meant to link the trust anchor (e.g. the QR code) to the&#xA;&gt; payment request message in a secure way. This will solve the problem&#xA;&gt; several apps are comparing address+amount fields as a workaround&#xA;&gt; instead, preventing some advanced BIP70 usecases. When these apps read a&#xA;&gt; matching hash, they need not compare any of the other fields.&#xA;&#xA;Sounds like a good plan.&#xA;&#xA;Do you have a list (possibly incomplete) of apps that perform this kind of checking? We’re currently working with some parties in a supply chain to allow a consumer payment on a retail website to automatically pay supply chain parties, the way BIP70 allows with multiple outputs on a transaction. This behaviour would prohibit this use case.&#xA;&#xA;/Mark</html></oembed>