[Bitcoin-development] Bitcoind-in-background mode for SPV wallets

[Peter Todd]

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On 9 April 2014 13:33:19 GMT-04:00, Alex Mizrahi <alex.mizrahi at gmail.com> wrote:
>>
>> 1) It's more private. Bloom filters gives away quite accurate
>statistical
>> information about what coins you own to whom ever you happen to be
>> connected too. An attacker can easily use this to deanonymize you
>even if
>> you don't reuse addresses; Tor does not help much against this
>attack.
>>
>
>There is also an option to download everything, but do only a very
>basic
>surface validation (without keeping track of UTXOs).
>You do not need a full node for that.

Yup, that's part of the idea behind partial UTXO set mode. You could have a model where your node starts with no data at all, and hence SPV security. You tell your node what the oldest key birthday is that your interested in and it downloads the full block chain starting at that date, giving you your txs w/ SPV security and full node privacy.

What partial UTXO would add on top of that is then your node would gradually scan backwards until block zero, at which point it has a complete UTXO set and is a full node.
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