Had that on my todo list and moved it up a bit yesterday. However, I don't think their claim of '30% of all transactions' is to far off.
Both their
low and
high feerate estimatimates as well as what properties their online wallet transactions could and certainly don't have is known. For example:
- Only spending P2PKH outputs (thus not spending SegWit nor multisig)
- Not signaling explicit RBF
- Not setting a locktime
- BIP-69 compliant (IIRC parts of their wallet are on GitHub, don't have the link handy right now)
- Not more than two outputs are created (one payment and maybe one change output)
Applying these filters on my site currently draws 33.50% of the 30.000 loaded transactions. A majority of these follow either the
low or
high feerate estimates. Obviously, there are outliners.
https://mempool.observer/monitor/?filter=RT00JmM9MCZkPTImYj0wJmE9MCZ2aT0xJms9MiZnaT0yJnY9MiZuPTImZz0wJnI9MCZzPTAmdD0wJnE9MCZtPTAmcD0wJm89MCZ6PTAmUj0wI might start writing this up over the weekend, if I have the time.