So, Ethereum "has blobs" now that "are provable," by an implementation that doesn't appear to contain tests [0]. Crypto, stay winning.
https://github.com/search?q=test+repo%3AOffchainLabs%2Fnitro...
https://github.com/search?q=test+repo%3AOffchainLabs%2Fnitro...
Not sure why it doesn't show up in GitHub's search, but it's right there in front of both of our faces.