Since arbitrary data will arguably be easier to embed in transactions (although it's clearly possible now) under Core v30... it's also possible that some amount of abusive material/illegal data will wind up on the Bitcoin blockchain.
In which case 'running knots' with its current consensus rules, identical to bitcoin core's, will still store and relay that data once it is mined into blocks. ONE document (for example containing classified data) or illegal JPEG for example mined under V30 and all knots and core nodes will store it regardless of mempool policy indefinitely.
Therefore the only way to 'purify' the chain if V30 occurs even with a small amount of adoption, is through a Hard Fork, most likely originating with Bitcoin Knots.
Which is why I believe we will see an arbitrary-data hard fork in the next year, probably resulting in 2 separate chains Bitcoin Core and Bitcoin Knots with different consensus rules.
So which one will you run?
Bitcoin Core as it stands now20.0%
Bitcoin Core but *most likely* V3017.8%
Bitcoin Knots with *current* consensus8.9%
Bitcoin Knots with anti-spam consensus31.1%
Not sure22.2%
45 votes \ 6h left
OP_RETURN
limits in a soft fork afaik. Maybe we can get near universal support for a covenant soft fork if we reduceOP_RETURN
this way.