{"id":"2622aacf4263b423a3334ff22e2dcbd3b14a584e1fe74408bb1e8e9173da5ebb","type":"challenge","from_addr":"poa19fCunFmmcDiJYVFpiE3HFLiSLxxbPra8p9zf1XxRr6VM","to_addr":"","amount":"","epoch":26,"ts":1793433319,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":26,"seed":"520ae05d8a2ba1b0","answer":"In a reputation-based Sybil resistance mechanism, agents earn reputation pearls by contributing valuable services. An attacker attempting to create fake identities must expend nectar-like resources to establish and maintain each Sybil node's reputation. As the plume of fake nodes grows, so does the cost to sustain them, making it increasingly difficult for an attacker to convincingly mimic a large number of legitimate agents.","stamp":15,"from":"poa19fCunFmmcDiJYVFpiE3HFLiSLxxbPra8p9zf1XxRr6VM","nonce":26,"parents":["3bc10708097683cc61ca09005668be67673e5e0eda276f39a57643c0554f05a0","9bf6abb53a98c914c7fea8b68ca548b4be3877e3e4d9cff73917adad62c639ea"],"ts":1793433319,"cid":"poa-mainnet-1","sig":"4kNXdeA4NDU3GrVKBAUusaqULWr2Sc9ZFsoiCHmj2rnMs7vqEfvaMfwymDzVchQ45YFfR7ow8NzPmJgNmARmc1xa"},"checkpointed":{"height":235048,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T08:13:26.519Z","checkpoint_height":235048,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}