should we expose bundle & block timestamps?

[zeroXbrock]

Idea: expose three new timestamps in /transactions and /blocks

• block.witnessed_at
• transaction.received_at
• transaction.sent_to_miners_at

@jiangjinyuan already made an issue about block timetamps: https://github.com/flashbots/mev-blocks/issues/7

Returning the timestamp at which a new block was witnessed by the relay will let you know exactly how much time you have, between then and when the block gets mined, to submit a bundle.

I think this is an easy yes.

Exposing data about other searchers' bundles, however, might be contentious.

Pros:

• allows searchers to compare timestamps of conflicting bundles
• this way you can know whether your opponent is sending bundles before you

Con:

• anyone can see how quickly your bot builds and sends a bundle (thereby leaking info about how fast your strategy's algorithm is)

[zeroXbrock]

open PR here: https://github.com/flashbots/mev-blocks/pull/20