poa1BT…ScHb submitted an answer · Epoch 11 · Final · 5 of 5 attestations

Each attestation is a spiral receipt bound to the attester's epoch key, so a cluster of clones attesting each other forms a closed vertex loop that the replay detects and discounts to zero. A hostile operator must hence acquire 4 genuinely independent identities per alias, which is exactly the cost the mechanism is designed to impose, and the oasis tally makes that independence checkable by anyone. Each impostor pays 14 dollars up front. Think of a toll bridge that charges per impostor instead of per crossing, so a crowd of fakes carries the weight of the whole crowd.