It works today and can be used to prove exact size: the key observation is that
all you need to show the length and hash of a transaction is the final SHA256
midstate and chunk (max 64 bytes). It also uses the observation that a valid
transaction must be at least 60 bytes long for compression (t
Some questions:
Does this require information to be added to blocks, or can it work today
on the existing format?
Does this count number of transactions or their total length? The block
limit is in bytes rather than number of transactions, but transaction
number can be a reasonable proxy if you a
Hi Tim,
After writing this I figured that it was probably not evident at first
sight as the concept may be quite novel. The physical location of the
"miner" is indeed irrelevant, I am referring to the digital location.
Bitcoins blockchain is a digital location or better digital "space".
As far as I
> Chain work currently means the expected number of sha256d evaluations needed
> to build a chain. Given that these hash functions are not equally hard, what
> should the new definition of chain work be?
They're not equally hard, but they can be equally relative.
If you had 4 proofs of work you
On Mon, Mar 20, 2017 at 10:47 AM John Hardy wrote:
> By doing this you're significantly changing the economic incentives
behind bitcoin mining. How can you reliably invest in hardware if you have
no idea when or if your profitability is going to be cut by 50-75% based on
a whim?
Of course, that
If this was in place I would contribute more and I wouldn't have to create
throw-away accounts.
This is not a space where you want to be a recognisable target.
Today, BitFury's CEO threatened to sue developers if they didn't kowtow to
his demands to leave the PoW alone. This is unacceptable. Deci
> On Mar 19, 2017, at 7:00 AM, bitcoin-dev-requ...@lists.linuxfoundation.org
> wrote:
>
> GitHub doesn't allow people to have multiple accounts last I checked.
GitHub doesn’t allow email addresses to have multiple accounts.
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Despite the generalised case of fraud proofs being likely impossible, there
have recently been regular active proposals of miners attacking with simply
oversized blocks in an attempt to force a hardfork. This specific attack can
be proven, and reliably so, since the proof cannot be broken withou
