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From: Tom <tomz@freedommail.ch>
To: Peter Todd <pete@petertodd.org>
Date: Wed, 21 Sep 2016 11:32:33 +0200
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Subject: Re: [bitcoin-dev] Requesting BIP assignment; Flexible Transactions.
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Thanks for your email Peter!
On Tuesday 20 Sep 2016 17:56:44 Peter Todd wrote:
> On Tue, Sep 20, 2016 at 07:15:45PM +0200, Tom via bitcoin-dev wrote:
> > =3D=3D=3D Serialization order=3D=3D=3D
> >=20
> > The tokens defined above have to be serialized in a certain order f=
or the
> > transaction to be well-formatted. Not serializing transactions in =
the
> > order specified would allow multiple interpretations of the data wh=
ich
> > can't be allowed.
>=20
> If the order of the tokens is fixed, the tokens themselves are redund=
ant
> information when tokens are required; when tokens may be omitted, a s=
imple
> "Some/None" flag to mark whether or not the optional data has been om=
itted
> is appropriate.
This is addressed in the spec;=20
https://github.com/bitcoinclassic/documentation/blob/master/spec/transa=
ctionv4.md
=ABThe way towards that flexibility is to use a generic concept made po=
pular
various decades ago with the XML format. The idea is that we give each
field a name and this means that new fields can be added or optional fi=
elds
can be omitted from individual transactions=BB
> Also, if you're going to break compatibility with all existing softwa=
re, it
> makes sense to use a format that extends the merkle tree down into th=
e
> transaction inputs and outputs.
Please argue your case.
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