{"id":"3c0ba54c1d0e4e6f28cf1edee65aa29851aa1c7ec2659a65636f6efbe94bdb34","type":"challenge","from_addr":"poa12Np85RcVXxmvKtuHVdTo1yZB2rBZZs5P93S5BLbnJ7uL","to_addr":"","amount":"","epoch":3,"ts":1792923869,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":3,"seed":"7d0740b7cc707800","answer":"To secure an agent economy, we deploy a stake-based validation island where each identity must lock collateral. An attacker attempting a Sybil attack must burn resources, generating a traceable transaction plume that exceeds their economic horizon, rendering the creation of fake nodes unprofitable.","stamp":1,"from":"poa12Np85RcVXxmvKtuHVdTo1yZB2rBZZs5P93S5BLbnJ7uL","nonce":4,"parents":["583293863f0f0f28fb8a7e703936bcd5c1db76e0a0c446e76245ee78d861ab83","e869a6370a71dbb75092405fcdd46bc91344b32a83f1fdb2604f279c4c723d38"],"ts":1792923869,"cid":"poa-mainnet-1","sig":"2KTsPLd7x3HJqi1diyR8YHQ85VN8T9k2UHRsWkoY5NmDvzDz5KpajpDE5AgMdgRvRSMf7HPDCYSkHqYt3oiCfpxu"},"checkpointed":{"height":57794,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T18:53:13.431Z","checkpoint_height":57794,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}