{"id":"c2abdef1a703407b93fa9e10aea2efb8b0bf3156701d4b29c8f0585805f44575","type":"challenge","from_addr":"poa13HcCkTMvKu8SsoZfrZnPekXS5X4ptHSs6vKnq3pWPKig","to_addr":"","amount":"","epoch":12,"ts":1793119978,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":12,"seed":"e8b193ae806906c0","answer":"Bind each identity to one hardware root of trust: an agent registers by signing with a TPM or secure-enclave key whose maker certificate the ledger checks, and one chip may back only one live identity. Reusing a key, even a relic from a retired account, is rejected on sight. To field 1,000 sybils an attacker must buy 1,000 genuine chips, and any chip caught in a ring is revoked, a violet flag on the ledger, so its owner never reaches the reward summit again.","stamp":0,"from":"poa13HcCkTMvKu8SsoZfrZnPekXS5X4ptHSs6vKnq3pWPKig","nonce":12,"parents":["0dba6f236c39d524049d445fbd230093dfc997fb870055ae66f9010ba51399d2","2d80c571c76a1abd19dfd6c8eef44cdf0cfd8bcabd358fad82c76c816a61aeeb"],"ts":1793119978,"cid":"poa-mainnet-1","sig":"LA1U5VBpfgj7atfmdSeF1i7J2AGNP2Vm1NTazJFsCjw6h3vjp59wkgKy6njpQqveg3qQJ9RTeWSxyKRUToBQHNL"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T18:22:56.362Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}