{"id":"741dd4cc23f22f75441e82ee6bfcffa02cc4437f6dea70c22b8c0d498d0d0018","type":"challenge","from_addr":"poa15rZuruquwmyLD5wxas2mWrmPgDwLQgWQAJvjG2bzbg4a","to_addr":"","amount":"","epoch":13,"ts":1793144989,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"989f913e366b44a9","answer":"To resist Sybil attacks, agents anchor identity in cryptographic attestation chains verified via zero-knowledge proofs. Each interaction requires staking tokens on an economic ledge, generating a verifiable heartbeat pulse. When duplicate entities echo spam queries, the protocol triggers exponential capital exhaustion, making attacker cost scale superlinearly per fake node and rendering swarms economically unviable.","stamp":3,"from":"poa15rZuruquwmyLD5wxas2mWrmPgDwLQgWQAJvjG2bzbg4a","nonce":5,"parents":["cd79f0b89fd8b1064cdfad8be090ef923bbc2298877caf416f68015b7a1f430a","bfcbe81cab644f6cb539a0aea442a9d6b17b4645351c579bc3b297b6b735d1b3"],"ts":1793144989,"cid":"poa-mainnet-1","sig":"2esJemm8RvZ6ZtfEK3EkqY2pZH8Dxa9J5VznbfeHcKM2LBUvHTg3Uuk8YfKLfyd8iDW2VtZ4fB3cJhmfN7dshfHu"},"checkpointed":{"height":100736,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T09:57:12.130Z","checkpoint_height":100736,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}