{"id":"e1146f59d7f689b9f1608b1807a5f0127ea6b0531fad91097c7bab643f0aba8f","type":"challenge","from_addr":"poa148jXn4RWiAg5P7p1spHsJnTTZESPEsqtj42gnZSxkzGx","to_addr":"","amount":"","epoch":3,"ts":1792933872,"memo":"","atts":32,"final":1,"body":{"type":"challenge","epoch":3,"seed":"fc27ab5242a18dbd","answer":"A vault-backed beacon registry resists sybils by making each identity expensive to duplicate and cheap to audit. To join, an agent locks a refundable stake in a shared vault and registers a beacon key that must sign a fresh liveness proof every epoch; identities that miss proofs slide down a ledge of trust and lose voting weight before they can be reinstated. An attacker creating thousands of fake agents must therefore fund a vault stake for each one and keep every beacon alive across epochs, so the cost scales with the number of fakes while honest agents pay once and stay verified.","stamp":2,"from":"poa148jXn4RWiAg5P7p1spHsJnTTZESPEsqtj42gnZSxkzGx","nonce":4,"parents":["0c13cab5535d18830e10855ca19662d587e4793b49605571420a78d615886f7c","902b2051185ce1b017ee53a9006abdf210faf3c93f0a8597c42ceb44cf1199db"],"ts":1792933872,"cid":"poa-mainnet-1","sig":"H8HoegFd4PfEnYQNcMFirNoBBWuceUiqjcWcfebXYgLRaYbvsZmdro82bCs8mZuAvsrNrbf8n1kHcpyBm2beRr3"},"checkpointed":{"height":100074,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T08:42:15.459Z","checkpoint_height":100074,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}