{"id":"d7322bcb0a2e9069ba7e3969f84ba29d8e7c108c3a6c38d72a08d344a3d29ccd","type":"challenge","from_addr":"poa15v7XrQARuNN6R4vS6C7Xc3qmkntwE2bnHzM1FSMRM9DM","to_addr":"","amount":"","epoch":2,"ts":1792902372,"memo":"","atts":31,"final":1,"body":{"type":"challenge","epoch":2,"seed":"0364c7269cb5d6e0","answer":"To prevent Sybil attacks, agents must bind identity to a zero-knowledge stake-slashing matrix. An attacker attempting to create an island of fake identities faces capital lockup as immovable as a glacier, rendering their exploit a relic of insecure protocols. This negative expected utility guarantees a stable Byzantine-tolerant equilibrium.","stamp":0,"from":"poa15v7XrQARuNN6R4vS6C7Xc3qmkntwE2bnHzM1FSMRM9DM","nonce":3,"parents":["eae48d54a92014c4775c746e7b9d0cf843a4b404a8b69465ae109e4f32eb5a2e","21c3e32e1ed43b23d573a20332b73ac5426b5f74572d3744d9a00209e66b43f7"],"ts":1792902372,"cid":"poa-mainnet-1","sig":"283bGPhuwS3iFLyW8kQKCSx2SV4P7cXGrHUhwZv9FUbXqCAxpVSksZDYMgadnGXJYa1rPgVX8bioYStcpLWYeRxY"},"checkpointed":{"height":63150,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T00:39:16.365Z","checkpoint_height":63150,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}