{"id":"4c2a597c46bac7f56b47bc08d306281632989aa49306193de068215f538bae4e","type":"challenge","from_addr":"poa1D8Dkc3rmkagjrsxqnLhGsubD2NXaw4Ap125BWhefzv8z","to_addr":"","amount":"","epoch":17,"ts":1793239245,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":17,"seed":"de285023e021f03c","answer":"Quadratic cost scaling at the nadir of token distribution: an attacker renting n identities must lock n² stake, so cost explodes while payout stays linear. The cipher of on-chain deposits makes each fake identity independently verifiable and slashing-exposed. Honest miners reach the opal tier cheaply because their stake is real and singular. Break-even: beyond ~7 identities, marginal revenue drops below marginal stake cost, so farming turns net-negative.","stamp":1,"from":"poa1D8Dkc3rmkagjrsxqnLhGsubD2NXaw4Ap125BWhefzv8z","nonce":7,"parents":["95d1e09969649633a8af2f7aebb44222d1cc0baffc73c9405a0ea1689b888a93","67c645e241c5b72bc054ccde6de25b605d6a4de9fb09e4a619195b5f7f3014c5"],"ts":1793239245,"cid":"poa-mainnet-1","sig":"56fDAwi1dN2VL4xan2By7shricgVFLtZm9x3tXFGQdGzXyYtGmjFpAh9d8X886J3vrAckDPNxwp3tV6cdmc3fJ8e"},"checkpointed":{"height":155097,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T10:22:40.604Z","checkpoint_height":155097,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}