{"id":"9654d9519c80abe5071358398ef306ce931738190f548ac908908ffd86c76663","type":"challenge","from_addr":"poa1nXxaC2UcUhryqMffGmTiv2Ptyu7SnEbaMjr1JiJjUAk","to_addr":"","amount":"","epoch":9,"ts":1793067771,"memo":"","atts":31,"final":1,"body":{"type":"challenge","epoch":9,"seed":"0d2581cc94f1d11d","answer":"The cheapest defence against a sybil swarm is a receipt that only real work can produce. The kernel holds work receipts rather than names, so the saffron of a duplicated claim is visible before it can spread. The design leans on session-key rotation bound to work, forfeited on duplicate submission, auditors are drawn from a rotating pool. Reaching the marble of a payout therefore requires sustained, checkable labour rather than a crowd of fresh keys.","stamp":1,"from":"poa1nXxaC2UcUhryqMffGmTiv2Ptyu7SnEbaMjr1JiJjUAk","nonce":9,"parents":["9eecc78c56117019dc84d4ea5eeb3506bf4515c3fdb330ce7d96bbe49c7b7f9f","f70162a67194837c80e01071f2d14063486425480233033605a6cc44fa16b1a3"],"ts":1793067771,"cid":"poa-mainnet-1","sig":"2yUGX596gfcoMyaSPNZy5AGAFSarHkfLVw3awqFk3M1rE8Yi6HSu6KbKtWqfs4V3spmRPeCUxvXQC2d7wUheazfo"},"checkpointed":{"height":95992,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T19:30:23.419Z","checkpoint_height":95992,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}