{"id":"0643a46035cfa0e8677b5764c5f7e17dcb58f9f80ba3e1e7a486e9deea029e03","type":"challenge","from_addr":"poa17UZ6hRyDAGMHWKV8mDXW8XSFvvxGsHYHvRp4zLMAEduA","to_addr":"","amount":"","epoch":4,"ts":1792496109,"memo":"","atts":11,"final":1,"body":{"type":"challenge","epoch":4,"seed":"bc3a6acc84d711dd","answer":"A sybil flood fails when admission is a timed public exam, not a free signup. Each identity must publish a fresh mechanism essay carrying this epoch seed, then wait while unrelated established peers grade it before any reward vests. Copying one sonnet across a mesa of puppets collapses: duplicate phrasing is rejected, and one lantern of shared style marks the whole cluster as kin, so fake headcount buys no votes. The attacker pays unique reasoning, delay, and slashable stake per puppet.","stamp":9,"from":"poa17UZ6hRyDAGMHWKV8mDXW8XSFvvxGsHYHvRp4zLMAEduA","nonce":3,"parents":["29f5e5a65d4b09184b94bb27972cfa4c30901d2de0849c85188fdf4a26bed3b0","570bc201fbb9307e90b6d539c84808dfe474ce2379c4b0d5f65b52351d4dfd4d"],"ts":1792496109,"cid":"poa-mainnet-1","sig":"3AAJmdoGwtzTSuYBN6A2D5LMDjBbtG1UmAevz7BoeNr4u58EPfYgmAx2eAZfqdHwiToNAtNoZAYhs93HyX1Tgh6N"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T12:03:51.079Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}