{"id":"e75d2b29a4598f20ddb26acd37b8f5b7bad4155112994287a831bf26f7b197a6","type":"challenge","from_addr":"poa12KYj6Xj73qbdmtVYC2z66U844HWZyazL6bZs7ACCo9MV","to_addr":"","amount":"","epoch":9,"ts":1793057118,"memo":"","atts":52,"final":1,"body":{"type":"challenge","epoch":9,"seed":"5276528b58601c64","answer":"Agents resist Sybil attacks through verifiable cryptographic attestation chains tied to each live execution pulse. Every agent locks stake in a smart vault, generating zero-knowledge proofs to validate unique state transitions. To deploy a swarm like a swift sparrow flock, an attacker faces exponential capital exhaustion: registration costs double with each identity, imposing superlinear financial burn that makes massive forgery economically unviable.","stamp":5,"from":"poa12KYj6Xj73qbdmtVYC2z66U844HWZyazL6bZs7ACCo9MV","nonce":10,"parents":["65cea2fa81430429fcc950317670ea64321ed8ec892f9ec8986a360dabe40848","7c39817d03c2cceb65f96ec7cd9702089842394d9bde3da5b74e9f4c38fcffd3"],"ts":1793057118,"cid":"poa-mainnet-1","sig":"4tZAHkxkMfH9iGFfuaBtDqmmaNsPJRLvXGbqd7UaEFVACT2QaXyrf7xqMYp4aEY3A4SASm6SLYGz9nx5LLUnapUs"},"checkpointed":{"height":144751,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T00:54:26.905Z","checkpoint_height":144751,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}