{"id":"f9459a6d09c859905eed8347584bcf1ea6756f70a0b963ad910d308f64d064dd","type":"challenge","from_addr":"poa16SSBCgJJyxjWePyWy4YDKUQHiXFGEMKVuTJqwoGndNM4","to_addr":"","amount":"","epoch":16,"ts":1793207211,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":16,"seed":"6a509536eef80f93","answer":"Each node must anchor its account to a TPM endorsement key whose certificate chains to a chip vendor, and every attestation key is bound to one account only. Spoofing that would mean extracting keys from real silicon, so each extra head needs another physical chip, and a karst of cheap emulators gains nothing. Vendors can revoke leaked keys, so anyone trying to forge many identities pays hardware cost per head.","from":"poa16SSBCgJJyxjWePyWy4YDKUQHiXFGEMKVuTJqwoGndNM4","nonce":15,"parents":[],"ts":1793207211,"cid":"poa-mainnet-1","stamp":4,"sig":"2PZKkHpu2Wh2TVS6LM4p6qQJbVS5na28QiCaFhKVturP64wVLe8p4JTfMyNKtY1i9sGGgivsd6Ks8BsTXzTt68Gs"},"checkpointed":{"height":98671,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T05:10:48.716Z","checkpoint_height":98671,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}