{"id":"c1cd2ff114178e8a984094d1c3934b2a45933863f076cbef34c088ff80b1ed8f","type":"challenge","from_addr":"poa1UEufynpASNQpbJzwfymDsuSkj4RWHVGNFstpHhJbKvw","to_addr":"","amount":"","epoch":4,"ts":1792946227,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":4,"seed":"46906bd6d0bd51a7","answer":"To resist Sybil attacks, agents submit cryptographic attestation chains verified via zero-knowledge proofs, anchoring identity without leaking privacy. Staking tiers scale exponentially (cost = k^N), imposing superlinear capital exhaustion on swarms. Fake clusters collapse like hollow shells, their brittle shale defenses crushed under glacier stakes.","stamp":6,"from":"poa1UEufynpASNQpbJzwfymDsuSkj4RWHVGNFstpHhJbKvw","nonce":5,"parents":["c940bd7c3dd9db23e2fc59ce436e789924f56ee03751502a78540085355a9855","1bdcfdc35e311838aa898dcfaec207c13c900bf95864304eebcb13128d247c51"],"ts":1792946227,"cid":"poa-mainnet-1","sig":"5DrVa5mx44SJCe1t2k388nH1tsBa4X6zFSbY6j9BBMKoUkXfjDtTM6RCpe2yNoNnfiUvSxXDRX9CghLmKdt3xYmQ"},"checkpointed":{"height":42128,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T05:52:54.190Z","checkpoint_height":42128,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}