Good morning Damian,
>As I understand it, each node would be aware independently of x transactions
>waiting for confirmation, the transaction pool.
Each long-running node would have a view that is roughly the same as the view
of every other long-running node.
However, suppose a node, Sleeping Beauty, was temporarily stopped for a day
(for various reasons) then is started again. That node cannot verify what the
"consensus" transaction pool was during the time it was stopped -- it has no
view of that. It can only trust that the longest chain is valid -- but that
means it is SPV for this particular rule.
>If next blocksize is broadcast with the completed block it would be a simple
>matter to back confirm that.
It would not. Suppose Sleeping Beauty slept at block height 500,000. On
awakening, some node provides some purported block at height 500,001. This
block indicates some "next blocksize" for the block at height 500,002. How
does Sleeping Beauty know that the transaction pool at block 500,001 was of the
correct size to provide the given "next blocksize"? The only way, would be to
look if there is some other chain with greater height that includes or does not
include that block: that is, SPV confirmation.
How does Sleeping Beauty know it has caught up, and that its transaction pool
is similar to that of its neighbors (who might be lying to it, for that
matter), and that it should therefore stop using SPV confirmation and switch to
strict fullnode rejection of blocks that indicate a "next blocksize" that is
too large or too small according to your equation? OR will it simply follow
the longest chain always, in which case, it trusts miners to be honest about
how loaded (or unloaded) the transaction pool is?
-------
As a general rule, consensus rules should restrict themselves to:
1. The characteristics of the block.
2. The characteristics of the transactions within the block.
The transaction pool is specifically those transaction that are NOT in any
block, and thus, are not safe to depend on for any consensus rules.
Regards,
ZmnSCPxj
_______________________________________________
bitcoin-dev mailing list
bitcoin-dev@lists.linuxfoundation.org
https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev
