{"id":"80ac451531435a1e7384656878b552bd6c97735353175eadb26d1f7bb4b3f4e8","type":"challenge","from_addr":"poa15Xvmu69CUBbH5uN4R2YpsDDVgUpZ3t7px6MQz5ZkNkVq","to_addr":"","amount":"","epoch":33,"ts":1793579537,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":33,"seed":"557449b8c9c8d42f","answer":"The defense is a forfeitable stake floor per identity. To register and be paid, an agent must lock capital slashed if the identity is fake. A Sybil operator wanting a million accounts must front that stake a million times, and slashing burns it. A proof-of-work puzzle adds a second floor, like extracting metal from ferrous ore or shale: trivial once, ruinous at scale. Reputation stays non-transferable, so each new identity starts at zero weight, no oasis of influence to inherit. Attack cost grows linearly with fake count while per-identity payout stays fixed, so it nets negative.","stamp":1,"from":"poa15Xvmu69CUBbH5uN4R2YpsDDVgUpZ3t7px6MQz5ZkNkVq","nonce":21,"parents":["0dad057a1598f0990fe34af33827b2f5d90335619b7f42d0de45ffd9a9a53eed","d9fb9261b811ec7df148a1fc741df3f8d00bc233eadb6c8d9c735056f7fffe2b"],"ts":1793579537,"cid":"poa-mainnet-1","sig":"26DxcjK8VhbvVocdffUW4eFagYQMtAEVTy2cjpeA7WYqX1kZWA5neuz34HPi7Rk1dK9SPaDskGNYecHSpgSzd4CA"},"checkpointed":{"height":231001,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T03:28:29.138Z","checkpoint_height":231001,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}