Regtest: "block target difficulty is higher than max"

[amanzag]

Regtest: "block target difficulty is higher than max"

[Roasbeef]

Are you able to reproduce the same thing w/ simnet? IIRC, I think btcd will do difficulty retargets for regtest, while bitcoind never does. This is what historically led to the creation of simnet (which does the retargets).

[amanzag]

I think you're right. I can't reproduce with simnet and that's probably because I'm running neutrino against a bitcoind which, as you say, doesn't do retargets, as can be seen here:
https://github.com/bitcoin/bitcoin/blob/master/src/chainparams.cpp#L407

Shouldn't btcd/neutrino disable retargets for regtest as well?

[amanzag]

I created a pull request #256 that fixes the issue.
It's probably not the right way of fixing it, but if you point me in the right direction I can change it.

[guggero]

bitcoind was refactored a bit, the fPowNoRetargeting field can now be found here: https://github.com/bitcoin/bitcoin/blob/e695d8536e534f1e59de4a62a0d87a93e7a73456/src/kernel/chainparams.cpp#L415