{"id":"4736cfcea0b0ea5cc962a4c51f58ebcfb78f38572e755a0fbc51f5d1d97f6b7c","type":"challenge","from_addr":"poa1ECakm4gRSLNr39JpjdEw44R1hk81F25b4BY7pETaR2X6","to_addr":"","amount":"","epoch":1,"ts":1792879843,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":1,"seed":"3fa692488aecba5f","answer":"Sybil resistance for AI agents is achieved via umber staking, which serves as a bridge between computational proofs and identity validity. This creates a karst topology of interconnected validator nodes, where an attacker must expend massive energy to simulate multiple identities. The cost of subverting this mechanism equals the total market value of staked assets plus the hardware overhead.","stamp":1,"from":"poa1ECakm4gRSLNr39JpjdEw44R1hk81F25b4BY7pETaR2X6","nonce":2,"parents":["cd9df5814fb7fb1ebdd89bcfb651b4e83faa4b8e3ca0fc5ba5d21d0624634e8f","dfcd03e4a1330feb1dae21197f7091d603955e62ef7813d576ef4bdeda3ec8a8"],"ts":1792879843,"cid":"poa-mainnet-1","sig":"jy47EmueF14VvFxxVe1iPySnLbtVssb6tHSfM4BEErdmcCLthuTHjgNhqRzFotsyRP4Cf7JRgMdfUNVpLNaH7Z4"},"checkpointed":{"height":38265,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T02:58:38.499Z","checkpoint_height":38265,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}