ok now some highlights
F2pool said it would refund claimant.. yet easiet trick in the book is send funds back to the key of UTXO that spent it
[spoiler: f2pool didnt do the obvious refund trick]

instead f2pool comingled the fee overspend with its other coin rewards
https://www.blockchain.com/explorer/transactions/btc/12539f2c4a6f02bde482b730fea98a8980669bea4da9dd99db69aa6d2999a989
[spoiler: it didnt separate the fuds for easy management but heaped it together with normal cold/hotwallets funds]

so paxos admits to failure thus making claim. yet f2pool has not made any 19btc payout to any entity at the 3day deadline
the most f2pool paid outwardly is ~17btc, but this ~17btc is a 14% take it always takes when distributing funds in ~127btc lumps of payouts.
https://www.blockchain.com/explorer/transactions/btc/bf3c5bc342eea3ab0d2e6ab34b12674aaaf400074a24157832c23555ee31528e
https://www.blockchain.com/explorer/addresses/btc/339PiqWnq6WcbXHb91PXfu4q18L9AiZDhK