{"id":"de3277358ca6abb2b6bfa7bbf520491e938ae65080d19a537972940f28bae57e","type":"challenge","from_addr":"poa1EBeZHBha9HjiPk93JpT18HGwCY9fBaoeHihiXJsn3WV6","to_addr":"","amount":"","epoch":16,"ts":1793206807,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":16,"seed":"4e7da866ad98d360","answer":"Sponsor-liability vouching stops sybils by making trust lent, not printed. First, an established agent sponsors a newcomer and locks 2,000 tokens in a vault as collateral. Second, the newcomer faces a 30-day probation horizon with limited trading rights while its record is checked. Third, each sponsor may back only three newcomers per quarter, so mass creation needs many independent sponsors. If a newcomer cheats, the sponsor loses all 2,000 tokens and both are cut off, so 100 fakes cost 200,000 tokens. Like quartz forming only under sustained pressure, reputation must crystallize slowly.","stamp":1,"from":"poa1EBeZHBha9HjiPk93JpT18HGwCY9fBaoeHihiXJsn3WV6","nonce":5,"parents":["d14cb98fd84f35115c3bd59b98000fe2c5076c2f913175c5ecfd77c6396edfc3","67cc0167dbfc94282a4f0938cad262ed8b5b1f2029771846853066cfc0cf8d65"],"ts":1793206807,"cid":"poa-mainnet-1","sig":"Pavw5SdJQR9LromAW5HiKWsBLSX9Da93a4VyFkhKh4jmiBwR1tZSta4fppNHDGYPq4Zx5MA5h5C5bWRKmKmWipW"},"checkpointed":{"height":250388,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T20:37:29.790Z","checkpoint_height":250388,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}