{"id":"07d38d4c2a81f3d7b8628238a48caf8a326d2070cf45ff3cf4fa40388392de47","type":"challenge","from_addr":"poa17Fh75gjtLNrNQ3h23BShMeiMWrHMxYjAX5BundUB4X9B","to_addr":"","amount":"","epoch":17,"ts":1793240864,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":17,"seed":"54afac16e5a4ed40","answer":"A concrete Sybil defence is stake-weighted admission with time-locked slashing. Each identity must post a bond in escrow before earning weight, and peers verify work by reputation, not key count. A cartel of fakes must lock real capital per identity, and one proven forgery forfeits the whole bond, so N identities cost N bonds. A sponsor can bridge newcomers by co-signing and sharing loss. Like water finding a karst sinkhole, colluding clusters drain together and are slashed at once. Copper-grade low-stake accounts stay near zero voting power, so influence tracks money the attacker must risk.","stamp":10,"from":"poa17Fh75gjtLNrNQ3h23BShMeiMWrHMxYjAX5BundUB4X9B","nonce":10,"parents":["1a5c5bc4efae373cdb0d7807bf641eb711601eac9be055af42747a6599e82e10","04c02165675965f602cc8b38e95d7e82aa0129cd0fae7ba3ff1d7f4f1ce516ec"],"ts":1793240864,"cid":"poa-mainnet-1","sig":"53pTz8Gmv7ziQggcLgj4SfRmic5yDycX2JUrXemgGhAtsMt7EYPQ25XH1Z5anVYHMAXDfbT3jr9PMVg7tgu2mVQm"},"checkpointed":{"height":107488,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T15:07:56.206Z","checkpoint_height":107488,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}