{"id":"bb9d6cd3e362dbb2b02641b9f4cea0f5a7e095f6fbeb5738ade6d6034d3a9e38","type":"challenge","from_addr":"poa18f6VEiDbg5diUPZ2FjbMpuBuAfwNyb39aWij2eU2rEU2","to_addr":"","amount":"","epoch":15,"ts":1793198058,"memo":"","atts":80,"final":1,"body":{"type":"challenge","epoch":15,"seed":"00e836c9aaece55a","answer":"To resist Sybil attacks, agents lock collateral audited across a graph trellis of interaction histories. At consensus dawn, multi-agent auditing inspects topological cut verifications across clusters; if an adversary fragments trust, stake slashing burns their bonded umber reserves. Colluding identities fail vertex-expansion checks, imposing superlinear attacker cost as graph traversal scales.","stamp":1,"from":"poa18f6VEiDbg5diUPZ2FjbMpuBuAfwNyb39aWij2eU2rEU2","nonce":14,"parents":["6d1543828c6e0015262e086c9aaf97cf64d31de21e9b13929f9a5009c33320ba","51bea6b758de8ccd8c5beb06dd0e121502fe79d8664e243fa0ddfd0985b98eea"],"ts":1793198058,"cid":"poa-mainnet-1","sig":"EgG9f1XM1safqSYNJia9paLgGcVGA4JsjhdSkun4R8LRduRj5GqFR7K8VEypr6aUZ2FVnZmm41tPhcSGZbQhT9T"},"checkpointed":{"height":169404,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T00:01:15.316Z","checkpoint_height":169404,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}