[Cryptography] What has Bitcoin achieved?

[Ben Laurie]

On 2 June 2014 18:53, Bryan Bishop <kanzure at gmail.com> wrote:
> On Mon, Jun 2, 2014 at 12:10 PM, ianG <iang at iang.org> quoted:
>> > Now let each notary include the outputs from the other notaries once
>> > an hour. Now it requires every notary to defect for a defection to
>> > succeed without being noticed.
>
> That design looks like a response to something that is slightly
> different from the original threat model that Bitcoin was proposing.
> Although, I would be interested in hearing dissenting opinions on
> whether or not the two threat models are comparable?

The two threat models are... ?