`/eth/v3/validator/blocks/{slot_id}` inserting default graffiti about nimbus-eth2 HOT 2 OPEN

The reproduction instructions can't be correct, as the graffiti is in .data.block.body.graffiti not in .data.body.graffiti.

Running this against my local Nimbus-BN also suggests that this is not an issue:

% curl -s http://localhost:5052/eth/v3/validator/blocks/$(~/Downloads/ethdo --connection=http://localhost:5052 chain status | grep 'Current slot' | sed -e 's/Current slot: //')'?graffiti=0x0000000000000000000000000000000000000000000000000000000000000000&skip_randao_verification&randao_reveal=0xc00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000' | jq -r '.data.block.body.graffiti'
0x0000000000000000000000000000000000000000000000000000000000000000

I suspect that something is going wrong with your inlined shell expression for ethdo, maybe there is an extra space somewhere, messing up the request so that the parameters are not properly sent.

from nimbus-eth2.

The reproduction was a quick attempt to show the issue, which could be incorrect, but there is definitely some issue. For example, on holesky a recent call to nimbus was:

/eth/v3/validator/blocks/1112275?randao_reveal=0xa020788cc586dbeec83f96afd96eacc5f435325708ba161e5d609a18513d52e508d77381d3de9cb9e3fd6a78aec663af19c3a335b3124c68c4622c623902fec6e24644d01262f701e1dd18a5c42e378ff4133ca7d8f25af7ce82b2d7c455c4d9&graffiti=0x417474657374616e742f566f7563680000000000000000000000000000000000&builder_boost_factor=100

and Vouch flagged an error for the data nimbus returned:

beacon block proposal has graffiti 0x4e696d6275732f7632342e322e322d6663396337322d73746174656f66757300; expected 0x417474657374616e742f566f7563680000000000000000000000000000000000

I'm pretty sure that there is no error with the URL, because the same URL to other beacon nodes returned valid blocks and ultimately one of these blocks was proposed with the correct graffiti:

ethdo block info --blockid=1112275 | grep Graffiti
Graffiti: Attestant/Vouch

In case it matters, the endpoint returned a blinded block.

from nimbus-eth2.