Quote from: smooth on July 27, 2014, 08:20:50 PM

Quote from: dga on July 27, 2014, 08:13:08 PM

- Splitting into fixed size chunks: 2-3x
- Ring signatures with a sane minimum for guaranteeing anonymity: 3x
- Block time: Negligible in the limit as the number of transactions increases
- Bigger individual signatures and addresses: 2x

Mostly agree, but one comment. Ring signatures do not make up the entire block chain, so using a mix factor of three (approximately 3x signature size) does not mean 3x in terms of blockchain size factors. Perhaps you are already assuming a mix factor of 5 or something, and the 3x number includes this.

Right. "with a sane minimum" -- something akin to BBR's minimum-mixin flag, to address the long-term mix de-anonymization problem. A solution to that will boost the blockchain size, though by how much nobody knows yet. The last time I heard from Zoidberg on this, he was thinking of something like minimum-mixin 5, but don't quote me on that, that's memory.