minimum block reward

[deepthiskumar]

Added a new flag --minimum-block-reward to the daemon command.
If the total reward of a block generated by a node is less than the minimum-block-reward configured by the node then it discards the diff (consisting of transactions and snark work) and creates an empty block (no coinbase or transactions) instead.

This is temporary solution to a problem described in #8576. The long term solution is described here #8585

Closes #8576

[bkase]

!approved-for-mainnet

[lampardlamps]

Hi, as a BP I'm wondering what benefits this solution brings please? The snark fees cannot exceed the coinbase rewards in the first place, so the reward without this solution will always be positive or 0. This solution, when triggered, seems to ditch the small, positive reward and produce an empty block with 0 reward. Why would a BP use this please?

[garethtdavies]

It's due to the Foundation rules as they do not include fees see https://docs.minaprotocol.com/en/advanced/foundation-delegation-program. If you produced a block with 720 rewards you are responsible to pay the same proportion of block rewards (less fees) regardless if you only received a net 20 after buying a snark for 700. So it guards against this case. At least, that is my understanding :)

[lampardlamps]

It's due to the Foundation rules as they do not include fees see https://docs.minaprotocol.com/en/advanced/foundation-delegation-program. If you produced a block with 720 rewards you are responsible to pay the same proportion of block rewards (less fees) regardless if you only received a net 20 after buying a snark for 700. So it guards against this case.

understood. Thanks Gareth!