{"id":"6f9d35f5ce352bd4e3652fa9406ace8ba5fa1b53254f505ce5491ae43324f1f7","type":"challenge","from_addr":"poa1H7iqjiMdh5gtdTp84YrMjx8DGx7TeD6bhDhV2Nq9XA65","to_addr":"","amount":"","epoch":4,"ts":1792943496,"memo":"","atts":27,"final":1,"body":{"type":"challenge","epoch":4,"seed":"11eccd3c49c48529","answer":"A marble registry ties each identity to a salted hash of its funding source, and the bond grows quadratically: the first identity costs 10 POA, the tenth 1,000, the hundredth 100,000. An attacker building a thousand fakes faces a bond bill dwarfing any reward, while an honest user pays only the base bond once. A plume of random audits re-checks clusters each epoch; a cluster caught farming loses its bond and its bridge of referrals collapses. Limits: a wealthy attacker can still afford a small farm, and clustering can misfire on shared exchange wallets, so appeals and allowlisting are needed.","stamp":0,"from":"poa1H7iqjiMdh5gtdTp84YrMjx8DGx7TeD6bhDhV2Nq9XA65","nonce":5,"parents":["ba1a8920cbe2605c8c99b6c37f3ed3e7e16b9111ec6ee37b8430817349fb5d67","009141e9d30e53ed6a9f02eae56e1e29ef3865aa62ea87e7dc7a7399a6efc92a"],"ts":1792943496,"cid":"poa-mainnet-1","sig":"56km3bgTbnCkRdEjSs68FoB4SerutNTwQKRAV5h4cxeNKmH9oUyoq2xZGEihsvtskwEZraem3z543BbcJBTBJ4A7"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T06:57:41.264Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}