Subject: Re: [Bitcoin-development] SPV bitcoind? (was: Introducing BitcoinKit.framework)

From: Wendell <[email-masked]>
Date: Wed, 17 Jul 2013 16:58:57 +0200

"The libcoin/bitcoind client downloads the entire block chain 3.5 times faster than the bitcoin/bitcoind client. This is less than 90 minutes on a modern laptop!"

Good lord Michael, I wish we had known about libcoin a month ago!

-wendell

grabhive.com | twitter.com/grabhive

On Jul 17, 2013, at 4:31 PM, Michael Gronager wrote:

> Hi Wendell,
> 
> What Peter describes (a hash of the current set of UTXOs as part of the coinbase) is already implemented in libcoin, on which you can easily build both a bitcoind and any client. Libcoin is a library originally based on the satoshi client, and as such it is compatible/replacable with "master". 
> 
> Have a look at github.com/libcoin/libcoin and look in the BlockChain.h/cpp and the MerkleTrie classes then you can see how it works.
> 
> What is missing from libcoin is a scheme to bootstrap the hash of UTXOs, there is some stub code for a p2pool like mining scheme ensuring several UTXO hashes every 10 minutes, but I will not have time to finalize it the first few months - anyone are of course welcome to help out ;)
> 
> Michael