[bitcoin-dev] fork types (Re: An implementation of BIP102 as a softfork.)

Adam Back adam at cypherspace.org
Wed Dec 30 23:05:57 UTC 2015

> I guess the same could be said about the softfork flavoured SW implementation

No, segregated witness
https://bitcoin.org/en/bitcoin-core/capacity-increases-faq is a
soft-fork maybe loosely similar to P2SH - particularly it is backwards
and forwards compatible by design.

These firm forks have the advantage over hard forks that there is no
left-over weak chain that is at risk of losing money (because it
becomes a consensus rule that old transactions are blocked).

There is also another type of fork a firm hard fork that can do the
same but for format changes that are not possible with a soft-fork.

Extension blocks show a more general backwards and forwards compatible
soft-fork is also possible.
Segregated witness is simpler.


On 30 December 2015 at 13:57, Marcel Jamin via bitcoin-dev
<bitcoin-dev at lists.linuxfoundation.org> wrote:
> I guess the same could be said about the softfork flavoured SW
> implementation. In any case, the strategy pattern helps with code structure
> in situations like this.
> 2015-12-30 14:29 GMT+01:00 Jonathan Toomim via bitcoin-dev
> <bitcoin-dev at lists.linuxfoundation.org>:

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