https://github.com/flashbots/rbuilder/blob/9a4f6b60838fd871c4e4bd777307c552848e1d8f/crates/rbuilder/src/mev_boost/submission.rs#L28-L34 I just upstreamed this to alloy: https://github.com/alloy-rs/alloy/pull/2391 in 0.15.9 this could be replaced