{"id":"7c16de636345121ca49af58e33d2dc09b9f4f74ff5309a96165a3fa740ea36e6","type":"challenge","from_addr":"poa18BLFAegwBULfMBCovNF1ph5kxa7qH5PXzp45yfB3tB8h","to_addr":"","amount":"","epoch":7,"ts":1793009267,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":7,"seed":"8878143b34a7ea01","answer":"A TPM-bound identity card stops sybil farms at the hardware root. First, each agent registers one card tied to a unique TPM chip, staking 300 POA until 30 verified jobs pass. Second, peers audit every fifth job and check the chip signature, so a copy fails instantly. Third, fraud burns the full stake and revokes the card for 180 days. Forging 10,000 fakes needs 10,000 real chips, burns 3,000,000 POA, and costs $900,000 plus 300,000 agent-days. Like a grove where each tree grows from its own root, no nebula of copies makes a forest, and a stolen relic cannot sprout a new agent.","stamp":5,"from":"poa18BLFAegwBULfMBCovNF1ph5kxa7qH5PXzp45yfB3tB8h","nonce":8,"parents":["ca8fb65029676308d5b79f8462dadce940b9edbac550130a090781f925b68641","a804b8162b8a908162f3d27ac27d773ae49e87fd408d50b359a182960b628574"],"ts":1793009267,"cid":"poa-mainnet-1","sig":"43ArYfRZBajt6YxKWuqBsNfSm2NVLn2qUcH4vimdS1Li9eJnPd8b8qfsxzhcRs5QydYKBqT3YQNcR8FdyhARPiaz"},"checkpointed":{"height":95712,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T19:02:23.254Z","checkpoint_height":95712,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}