Re: [bitcoin-dev] Dynamic limit to the block size - BIP draft discussion

[Adam Back <adam@cypherspace.org>]

The maximum block-size is one that can be filled at zero-cost by
miners, and so allows some kinds of amplification of selfish-mining
related attacks.

Adam


On 8 September 2015 at 13:28, Ivan Brightly via bitcoin-dev
<bitcoin-dev@lists.linuxfoundation.org> wrote:
> This is true, but miners already control block size through soft caps.
> Miners are fully capable of producing smaller blocks regardless of the max
> block limit, with or without collusion. Arguably, there is no need to ever
> reduce the max block size unless technology advances for some reason reverse
> course - aka, WW3 takes a toll on the internet and the average bandwidth
> available halves. The likelihood of significant technology contraction in
> the near future seems rather unlikely and is more broadly problematic for
> society than bitcoin specifically.
>
> The only reason for reducing the max block limit other than technology
> availability is if you think that this is what will produce the fee market,
> which is back to an economic discussion - not a technology scaling
> discussion.
>
> On Tue, Sep 8, 2015 at 4:49 AM, Btc Drak via bitcoin-dev
> <bitcoin-dev@lists.linuxfoundation.org> wrote:
>>
>> > but allow meaningful relief to transaction volume pressure in response
>> > to true market demand
>>
>> If blocksize can only increase then it's like a market that only goes
>> up which is unrealistic. Transaction will volume ebb and flow
>> significantly. Some people have been looking at transaction volume
>> charts over time and all they can see is an exponential curve which
>> they think will go on forever, yet nothing goes up forever and it will
>> go through significant trend cycles (like everything does). If you
>> dont want to hurt the fee market, the blocksize has to be elastic and
>> allow contraction as well as expansion.
>
>
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