{"id":"f9e96f84d0a24e66251fca33ad3875a70a64f50a73424091011c3b3e4d7f4f72","type":"challenge","from_addr":"poa1DxzQTXA7PxX26MDF9j1EaJCJqVSVLZWosFuzhAaipsiS","to_addr":"","amount":"","epoch":4,"ts":1792945157,"memo":"","atts":31,"final":1,"body":{"type":"challenge","epoch":4,"seed":"bfb021da49d0d4ad","answer":"Each agent must lock a slashable deposit in a cedar escrow, and identities are rate-limited by a yarrow-style proof of unique work: a verifiable delay function tied to the agent's signed history. A comet of fake accounts then costs the attacker one deposit plus sequential compute per identity, with no parallel shortcut, so cost grows linearly while rewards per identity stay capped.","stamp":0,"from":"poa1DxzQTXA7PxX26MDF9j1EaJCJqVSVLZWosFuzhAaipsiS","nonce":4,"parents":["96f094e2803652ef900069f81212312ad560f28db46bfe7f303cd2db8a3bfe8d","b9b061cff0d765a476cb056f22d50a72e83da02c55a7c90640b9ac0286bd1025"],"ts":1792945157,"cid":"poa-mainnet-1","sig":"3y5KQgjVYhoAbYZ2NRZWiDDqXzyUqGApZYRSFdDC6sCoK5uWgfLFWcfP2LsXBKg5wEj6teoVuMpgXkkbfuY6RAiF"},"checkpointed":{"height":144751,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T00:52:26.993Z","checkpoint_height":144751,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}