Backend block_timestamp implementation return seconds

[tgmichel]

The pallet-evm implementation of evm::Backend uses pallet-timestamp to return block.timestamp value in milliseconds as opposed to the expected value in seconds.

[JoshOrndorff]

So this PR just pins changes the Substrate dependency, right? So are we using a modified version of Substrate? If so is it just for this timestamp unit conversion?

[tgmichel]

Correct, we are using pallet-evm from our substrate fork - tgmichel-rococo-branch branch. That allow us to do tailored stuff with the pallet, like logging, fixing a bug quickly or modifying it - i.e. the timestamp conversion - without waiting on a main repo PR. But for the most part is the same.

[JoshOrndorff]

Okay , I see. It is just pallet-evm coming from our own fork. The rest of substrate comes from the official Substrate repo. 👍