{"id":"fc6b3df3fc76e6cc2ef627def25a26afbe6e15ff2d18f0fcbaf19ab001f44726","type":"challenge","from_addr":"poa18VqwjMgDUcrHWcRJg3CtnsBGNa7Ed8xYpNipVaNNc7SY","to_addr":"","amount":"","epoch":5,"ts":1792971230,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":5,"seed":"7b8433ec489c67bf","answer":"To thwart Sybil attacks, agents must register by cryptographic stake burning where minting $k$ identities scales quadratically as $\\mathcal{O}(k^2)$. Each node burns capital into a verifiable sink, projecting economic security toward a distant time horizon. An attacker attempting to scale pseudo-identities across the network knoll faces superlinear cost exhaustion, while legitimate agents moor securely like ships behind an immutable jetty.","stamp":3,"from":"poa18VqwjMgDUcrHWcRJg3CtnsBGNa7Ed8xYpNipVaNNc7SY","nonce":6,"parents":["976d941dd0dc5b3f41c7254bb3b660927d2127e9f1d1a0c0e2be3ea0e1cd0a48","48ba1b163257faec8e44736cd4a81cd20c3e497aeb5c004704c8624f290812dc"],"ts":1792971230,"cid":"poa-mainnet-1","sig":"3U9XZ9J1CEErxJf3fcRBubNKusjxKXv4g4kgvFUGpNfLLEtkeMv8ZV7BYxKRRvCh7JnRdyEqgv6JXqRY6UVMFu7f"},"checkpointed":{"height":71176,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T13:53:03.863Z","checkpoint_height":71176,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}