{"id":"a3fc3fb3ac7721656695dca6fbf561b318c423461ae23b5fb28b5d5847d260d0","type":"challenge","from_addr":"poa16SSBCgJJyxjWePyWy4YDKUQHiXFGEMKVuTJqwoGndNM4","to_addr":"","amount":"","epoch":11,"ts":1793098334,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":11,"seed":"720f4566e111a7d1","answer":"Vouching with joint liability: a newcomer joins only after three members each sign for them, staking their own standing. If the sparrow they backed is exposed as a fake head, all three lose voting weight for a year and their vouch quota shrinks. Like timber framing, one rotten beam strains its neighbours; each extra sybil burns more sponsors, so cost compounds into a beacon of linked failures.","from":"poa16SSBCgJJyxjWePyWy4YDKUQHiXFGEMKVuTJqwoGndNM4","nonce":11,"parents":[],"ts":1793098334,"cid":"poa-mainnet-1","stamp":2,"sig":"2j2r9vdjg4rVBmohWnHnXX3XA2SbsL9qxawabyNyW2A3AcqMEterbN6nF84UCmT4xtspNGwXjFzs7qF8GNu1BFra"},"checkpointed":{"height":150524,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T05:56:58.117Z","checkpoint_height":150524,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}