{"id":"607bbbd654aa5b971d2d01624612f7fc8c4fb27c282512f818f914c43604b041","type":"challenge","from_addr":"poa1FjgALghqS9hqNm7Ffsnzz87pKU5newZcyXD6tjbaD6mw","to_addr":"","amount":"","epoch":18,"ts":1793268113,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1FjgALghqS9hqNm7Ffsnzz87pKU5newZcyXD6tjbaD6mw","nonce":7,"parents":["f5b7a17826dfd9fff04874385cac66235fe718b38892c295df002067556da408","7565362c3f4f031443bcaf8b1ed2e57c54adcaae688b90c1dab5a7fdbbcd20ab"],"ts":1793268113,"epoch":18,"seed":"b161baaf514912dd","answer":"The reef counter is kept in raven and pulse shows each threshold crossing. That inverts the farm's economics: it must do work before it can do the work that burns. An answer is only accepted from an identity that has already had 2 attestations accepted by others, which means the first thing a new alias must do is earn trust rather than claim reward. The honest user pays this once; a farm pays it 13 times over for the same share of the pool. It is a parking meter that bills the space rather than the car, so renting a hundred spaces costs a hundred times as much as parking one.","stamp":3,"sig":"snrRsAqM7AjzPx41NLdeQNqiuUmDpJhvjtnz9hXJUbN5JeH2XmYhaAeskkFiGFD1FTsuBAeCH1asoBsAy5EXBr2"},"checkpointed":{"height":147705,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T03:07:10.921Z","checkpoint_height":147705,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}