Regarding the decimal vs satoshi notation I see a few problems with satoshi:
* readability - humans reading the URI would expect it to accurately reflect what is being displayed (subject to internationalisation issues) For example, amount=1.234 is more human readable than amount=123400000 (ish)
* backwards compatibility - existing software already uses the decimal notation
* forwards compatibility - Bitcoin needs to move beyond the satoshi to 20 dps for some reason, this remains OK within the existing schema, but forces decimals into the satoshi scheme
* simplicity - dual decimal/satoshi variants should be discouraged under the "single representation" approach
It's relatively straightforward to convert a string encoded decimal into an internal integer for currency calculations just by applying a multiplying factor. One never uses doubles or floats for money.
On 31 January 2012 14:33, slush
<slush@centrum.cz> wrote:
Hi Amir,
> All the HTML, URI and everything uses decimal numbers alone. I see no reason for breaking with tradition.
excuse me if it was already discussed, but maybe using satoshis instead of decimal bitcoin would be better choice? We all know about pains with proper handling decimal numbers across of all implementations - and it's not only about json-rpc.
Otherwise I agree, BIP 21 is better than BIP 20 because it's easier to implement all points of the standard.
Best,
slush
On Tue, Jan 31, 2012 at 3:27 PM, Amir Taaki
<zgenjix@yahoo.com> wrote:
BIP 20 really has no support among implementations such as Bitcoin-Qt, Electrum, MultiBit or Bitcoin-JS. As the most active and visible user facing GUI projects (all with some form of URI Scheme), their opinion carries the most weight. To a lesser degree Bitcoin-Qt has the large majority of users too (although that's a line of reasoning I'd discourage).
Normally we should probably Reject BIP 21 and re-submit a new standard (for history's sake), but as a) BIP 21 is largely a copy paste of BIP 20 sans some sections b) it is still a draft, probably the best thing here is if you all agree on something to run it by BlueMatt and then we'll make it the new BIP 21.
I can see a consensus forming on most parts. Just the send private key is contentious, and there's the topic of adding a time to expire field for merchants (this is a very good idea IMO).
Also BIP 20 is problematic because it is incompatible with about every standard on the web. All the HTML, URI and everything uses decimal numbers alone. I see no reason for breaking with tradition. Note that everytime I have to write Color or Vectorize (as a British speaker) in my code, I die a little inside. But it's convention and American English = International English. Also it would be cool if all code used a *real* international language (like Esperanto) but the world ain't perfect! We live in a decimal-counting English-speaking Windows-using God-worshipping world!
(no offense to decimal-counting English-speaking Windows-using God-worshipping world- I do half those things too :)
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