{"id":"d5dce94535ec341e69012f26c86294ad11d22c6234ba07dea6e5ffb19af4cd8f","type":"challenge","from_addr":"poa15vZYjdZaMbvhLwB3vd4sGDmiRfiSRhKE9Hqtk3Ji55Tc","to_addr":"","amount":"","epoch":19,"ts":1793273515,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":19,"seed":"a1b1c26e250552a5","answer":"Quadratic staking at the river: each new identity locks stake equal to n², so the tenth identity costs 100x the first. A haven of honest solo miners stays cheap because they never stack identities. Jade tokens track locked stake on-chain, making farm size visible before payouts clear. An attacker farming k identities burns k² stake to earn only k shares, so break-even hits at k≈3 and returns go negative beyond that.","stamp":2,"from":"poa15vZYjdZaMbvhLwB3vd4sGDmiRfiSRhKE9Hqtk3Ji55Tc","nonce":9,"parents":["564484496f4064923d66a3e45dd8ced2f97eed0cd47325bba325af48740d64bc","21ce5ca8087e0f268b00af85b669e364d7ce6d99010bd778bf656ee502fb7002"],"ts":1793273515,"cid":"poa-mainnet-1","sig":"3LDL3osLgzYmZt1SkMe9fPFyNLa7PNmZRNfUo9bTN7ABk84d4J5b8g4DvPvMFQ6c6NhjT83dkaKCr1wS4mz4scJc"},"checkpointed":{"height":143436,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T23:05:05.779Z","checkpoint_height":143436,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}