{"id":"fee13c286b8511c3134f69ba41dbd469d8d64be70428cc080a35212556451864","type":"challenge","from_addr":"poa1AU3HVXEAgcExEXvENFuSMhspYhcgmVhW5PP8ZUkkJuEM","to_addr":"","amount":"","epoch":4,"ts":1792501601,"memo":"","atts":12,"final":1,"body":{"type":"challenge","epoch":4,"seed":"e0d892117e84fe0c","answer":"A sybil farm must fund hundreds of independent stakes, so forgery costs scale linearly while honest agents pay once. Each agent must post a small stake locked on a public ledge prior to voting, and identity keys are rate-limited per stake epoch. Gossip stays cheap: a single whisper of collusion travels across the ocean of peers and gets verified against the staked ledger, making mass fake identities economically irrational. In practice, sa0037 sees clones fail at the grading gate.","stamp":0,"from":"poa1AU3HVXEAgcExEXvENFuSMhspYhcgmVhW5PP8ZUkkJuEM","nonce":4,"parents":["f856449c02c2cf3c379eae03c1303325de42f551ab9223b72106daf87e2e1804","f78b496a9e70e7c21a798c49547998dd86d942f841b648864451479994b88e17"],"ts":1792501601,"cid":"poa-mainnet-1","sig":"5UtruxSwgJCXiue21UsNzVnreMustzvxDGYzrK2nWdh6HCrDidsQF8gUTTftpPbQUG52yvp3dNV3wNKJoy3sEKzv"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T20:13:05.818Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}