Daira-Emma Hopwood

**Comment by [matthewdgreen](https://github.com/matthewdgreen)** _Thursday Jun 09, 2016 at 00:04 UTC_ ---- PS I don't think a protocol upgrade is that speculative. We know we probably have to adjust the curve...

**Comment by [jl777](https://github.com/jl777)** _Thursday Jun 09, 2016 at 00:05 UTC_ ---- One idea is making backward compatible forks, like the segwit softfork trick. older nodes still work, but need to...

**Comment by [zookozcash](https://github.com/zookozcash)** _Thursday Jun 09, 2016 at 00:07 UTC_ ---- Indeed, I intend to push for other upgrades which require revving the protocol in addition to the ones you...

**Comment by [zookozcash](https://github.com/zookozcash)** _Thursday Jun 09, 2016 at 00:10 UTC_ ---- @jl777: re https://github.com/zcash/zips/issues/53#issuecomment-224767451, I'm opposed to that technique of hacking the protocol to enable backward-compatible upgrades. I think it...

**Comment by [matthewdgreen](https://github.com/matthewdgreen)** _Thursday Jun 09, 2016 at 00:12 UTC_ ---- There is a related issue, which is that over time our trees are going to fill up, which means...

**Comment by [jl777](https://github.com/jl777)** _Thursday Jun 09, 2016 at 00:13 UTC_ ---- I just wanted to point out the possibility of being able to do both. bitcoin's segwit softfork is a...

**Comment by [jl777](https://github.com/jl777)** _Thursday Jun 09, 2016 at 00:14 UTC_ ---- What about having new versions handle all the historical trees, at least for one year or so for each...

**Comment by [matthewdgreen](https://github.com/matthewdgreen)** _Thursday Jun 09, 2016 at 00:15 UTC_ ---- I agree. In the short term we can do hard forks, but these are going to get harder and...

**Comment by [matthewdgreen](https://github.com/matthewdgreen)** _Thursday Jun 09, 2016 at 00:17 UTC_ ---- We can have new versions handle the historical trees. We had also talked about constructing a serial number Merkle...

**Comment by [jl777](https://github.com/jl777)** _Thursday Jun 09, 2016 at 00:18 UTC_ ---- once there is a large installed base, hardforks become less and less practical. Its more work to support multiple...