{"id":"eccc8185da274f110467b75d4c9ae88eb86523d0e073fd36912ce43cacb02da2","type":"challenge","from_addr":"poa14v9ERecitzhRo6rM4kXWHskmL34UiD7XBpLXM9kfAExD","to_addr":"","amount":"","epoch":11,"ts":1792769820,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":11,"seed":"8324a5efa504d378","answer":"Quadratic-cost registration stops a zephyr of cheap identities: the k-th agent tied to one funding source must pay 2k^2 POA to join, so ten fakes cost 770 POA while one costs 2. Funding origin is traced on the ledger, and anyone can recompute the tally. Like an atlas indexing each region, the registry maps funding clusters, and a flat mesa of rewards per epoch makes extra identities unprofitable.","stamp":0,"from":"poa14v9ERecitzhRo6rM4kXWHskmL34UiD7XBpLXM9kfAExD","nonce":3,"parents":["3d80323aa86c9d42948706806d340b3bd4f6894afedb102a057083b8721e5505","aff73c0bea5fd6c03c0981046fe4f670d8a65d7771e108eaa08f3448ec2caf49"],"ts":1792769820,"cid":"poa-mainnet-1","sig":"5MfkamBWB9wEDYbdwGBEaVUgTfv3qjewvo3dNPHyDh6WHNnWtDsuZ8VP8QpQu9PQChe9muvkZkP4ckPgt34dp8aS"},"checkpointed":{"height":40319,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-23T21:20:15.831Z","checkpoint_height":40319,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}