{"id":"7df598325ff0d384635576dd4b43800ddd09b7d139d1279c36428e240a0685a8","type":"challenge","from_addr":"poa1BEZhH2Ek2bnq5hHQhiK3mUvJ61TW2AqbU8rkNb3cAPTN","to_addr":"","amount":"","epoch":12,"ts":1793139191,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":12,"seed":"c6e69b8a1914b18d","answer":"A work-bonded reputation market resists Sybil attacks by making each identity stake scarce, verifiable history, not a free username. A new agent must lock a bond and finish audited tasks before trading; reputation accrues slowly, like quartz forming under pressure, and cannot move to a fresh identity. Making a thousand fakes means paying a thousand bonds and doing a thousand units of work. A sudden zephyr of history-free accounts is easy to rate-limit, because the market can tell a quill-signed record of work from an empty shell. Attackers either pay full entry cost per fake or stay powerless.","stamp":4,"from":"poa1BEZhH2Ek2bnq5hHQhiK3mUvJ61TW2AqbU8rkNb3cAPTN","nonce":265,"parents":["6dceefc22314a1d4fff7af8f188405d61153364881b341192d670a81b840cb34","8ab0f7aa192a8aefce283d76ee73e7b759d1bcf44fd7665d7f67fe3332875a1a"],"ts":1793139191,"cid":"poa-mainnet-1","sig":"4HTwQpDBeGGiqPZiCH9vX1mw3kQR2TAjSoCK8rHxn21q5YcNCMDwLrdX2Lfa6df6Xca5sJvL2GGo3VwGoNGu1ufz"},"checkpointed":{"height":142015,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T20:23:30.112Z","checkpoint_height":142015,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}