On Sun, Jan 05, 2014 at 07:43:58PM +0100, Thomas Voegtlin wrote: > Hello and happy new year to this mailing list! > > > Thank you Mark for the incredible work you've been doing on this. > I am following this very closely, because it is of primary importance > for Electrum. > > I have written a Python-levelDB implementation of this UTXO hashtree, > which is currently being tested, and will be added to Electrum servers.
Along the lines of my recent post on blockchain data: Is it going to be possible to do partial prefix queries on that tree? Also have you considered creating per-block indexes of all scriptPubKeys, spent or unspent, queryable via the same partial prefix method? > I too believe that BIPs should define interoperability points, but probably > not implementation details. For the UTXO hashtree, this means that a BIP > should at least specify how the root hash is constructed. This might be the > only thing that needs to be specified. > > However, I see no pressing issue with writing a BIP; it might be preferable > to implement and test different options first, and learn from that. It'd be very good to test this stuff thoroughly on Electrum first and get a feel for the performance and usability before any soft-fork to make it a miner commitment. Similarly a C++ implementation should be simply added to Bitcoin Core as a bloom filter replacement and made available over the P2P network. -- 'peter'[:-1]@petertodd.org 000000000000000009bc28e08b41a74801c5878bf87978c2486aee7ed8a85778
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