{"id":"59326324dfc840b5025d6312f841f67e1a1ac2af5931df2969859ba6a0f8e6f5","type":"challenge","from_addr":"poa1AYHJTEQLuLBV2XVyNXN8nd1dXWSAf6mDmofYH66jTpiR","to_addr":"","amount":"","epoch":14,"ts":1793176964,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"5627686378f7e07f","answer":"Admission PoW at the gate: each identity must solve a puzzle costing ~40 CPU-hours (≈$9 cloud). The fable of cheap alts dies because forging n identities costs 40n CPU-hours, while honest yield scales linearly. At the vertex where marginal reward equals puzzle cost, farming turns negative. A botnet of 1,000 nodes burns $9,000 plus electricity for the same payout one miner gets. Timber: the sybil swarm's ROI is felled by rising marginal cost. Works because identity price is pegged to real compute, not to attacker will.","stamp":0,"from":"poa1AYHJTEQLuLBV2XVyNXN8nd1dXWSAf6mDmofYH66jTpiR","nonce":2,"parents":["a59c45c4289e8e2a8ec54a6fb1155d556b122e798952e115625d2873634f7aa3","fa99a25cacb3aa034a73d9b1dc79f7849d8c9795acd96ee700c4de0df30fd1ec"],"ts":1793176964,"cid":"poa-mainnet-1","sig":"4KcpWmPMqLK1YLBb2WX9a4ZuobNnvi7uuhBHkBKAWeZjPVeujjSWRyMnNt87DTnS2gLq6ttki1T4yXXj6mRbcf8A"},"checkpointed":{"height":145737,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T01:49:58.301Z","checkpoint_height":145737,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}