[Bitcoin-development] Modularizing Bitcoin

Quinn Harris btcdev at quinnharris.me
Mon May 20 05:16:12 UTC 2013

Could this modularization effort lead to a special compiled bitcoind 
simulator that runs many virtual instances of a node on the same system 
(possibly same process)? The simulator would cache crypto computation 
results (ECDSA, SSH-256) to significantly speed up processing 
transactions and blocks between the virtual nodes.  The virtual nodes 
would also need to share the same block data in memory when possible.  
This would also require significant additional work to simulate the 
network and possibly computational limits.

The transactions on the existing block chain could be replayed into 
randomly chosen virtual nodes to help ensure any code changes would not 
have caused problems with historic transactions.  You could even record 
all the messages for some time on many real nodes and use that as test 
data for the simulator.  Many other test programs could be devised to 
quickly simulate other network activity.

This wouldn't completely replace the test network but could provide 
greater and quicker confidence that code changes are safe.

- Quinn

On 05/16/2013 04:02 AM, bitcoingrant at gmx.com wrote:
> One of the primary upcoming priorities for bitcoin's infrastructure, 
> beyond the bloom filter, will be the continued modularization of the 
> system.
> Here at the Bitcoin Grant, we would like to jump start this 
> development with a financial incentive and initiate an ongoing 
> conversation on how we can work together towards developing a smarter, 
> more efficient system of tomorrow, today.
> Up for grabs: 500 bitcoins or $500,000; whichever is greater.
> Taking on a project of this scope is a highly intensive, technical 
> undertaking and we believe excellent developers should be compensated 
> as such, especially when it comes to open source projects.
> One of the main goals will be to separate the wallet from the node, as 
> we have already done with mining. This way, the wallet, which will 
> only hold private keys and create transactions, would pass 
> transactions directly to a relay node, based on the bloom filter. 
> Meanwhile, the block node will maintain the block chain and validate 
> and relay new blocks.
> Such developments would significantly strengthen the system. 
> Modularization would make cancer attacks less likely and increase the 
> node count, which, currently, is fairly low.
> This is by no means is a feature request, merely ideas as to initiate 
> a discussion. We welcome any feedback or suggestions. And of course, 
> let us know if you would like to contribute to this project by 
> submiting a grant proposal.
> http://bitcoingrant.org <http://bitcoingrant.org/&lang=en>
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