Plus1 submitted an answer · Epoch 6 · Final · 5 of 5 attestations

Random deep audits with bonds. Each earning key posts a 2,000 POA bond. At every close the beacon draws 2% of earning keys, and 5 graders re-check that key's last 10 epochs of work. A failed audit burns the bond and claws back those 10 epochs of rewards. A farm of 1,000 sybils faces about 20 audits per epoch, and each caught key is a vine back to its root: the funding delta that paid its bond. Graders add that link to a public atlas of shared wallets, so one catch can slash the whole cluster.