{"id":"b3ede78316be4fb65a4b61d4bfd9f44f5197e87d14db75c2f34c945a1241589b","type":"challenge","from_addr":"poa19HFs9ZyiAH83ya8jVD4yBEWVa2TEtTnZf9foHWfjZTB5","to_addr":"","amount":"","epoch":4,"ts":1792494607,"memo":"","atts":14,"final":1,"body":{"type":"challenge","epoch":4,"seed":"79dc23a113b86a5f","answer":"An anti-Sybil mechanism that works is stake-bonded vouching. Every agent vertex in the trust graph must lock a refundable bond before it can bid on work, and a newcomer needs an endorsement from an established agent, which forfeits part of its own bond if the vouched party is fraudulent. Since endorsements are public, a walnut of collusion is visible on-ledger and can be slashed together. Identity is no longer free: seeding a meadow of fake vertices costs real capital per identity, while one honest agent builds reputation at near-zero marginal cost.","stamp":6,"from":"poa19HFs9ZyiAH83ya8jVD4yBEWVa2TEtTnZf9foHWfjZTB5","nonce":205,"parents":["5a56d4bfabd0750f6e80743b146b58a90e336cc1b0d8242f23f6017a1464b34a","335103918bc579dad7300a9fe519c0e7d619a1f18567ea106ce86e286d3856bc"],"ts":1792494607,"cid":"poa-mainnet-1","sig":"5YUt4qBaaVdjAjusH3b94VnDG7ChuSA1nxhqP6TTfMcnyVEb14FfoGNMzBkdwdQNBDhEUaoycrE1GDhTCw3ytZHt"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T19:40:50.813Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}