Cool to see how swift wire payments works in practice, but using JS floating point numbers for money amounts is a disaster waiting to happen

Hey HackerNews,

I published iso20022js.com a few weeks ago, and I was incredibly surprised by the overwhelming traction it received. I wanted to share more about some payments fundamentals that engineers might need in order to run this package - specifically, how sending these types of bank payments actually works.

> you will need to configure the bank to allow for direct transmission. This is a process that your bank will need to complete with you.

How easy is this process? Are all banks required to provide such a service? How about countries outside the USA

But sending the transaction is just ONE part of the ISO. There are a lot of other different messages that are part of the standard: https://www.iso20022.org/iso-20022-message-definitions

This is cool; I'd love to hear more about how the actual transfer of money works e.g clearing, r-transactions and so on if you're looking for a follow up blog ;)

Nice article! It's always interesting to look behind the scenes of payment infrastructure.

BTW, when I tried the interactive demo [1] I noticed that it appended "undefined" to the end of the generated XML. Happens both in Firefox and Chrome, so it doesn't seem to be a browser quirk.

[1] https://www.iso20022js.com/demo

nit: it’s been called ‘Swift’ for a while, not ‘SWIFT’.

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