{"id":"f1e8467b3a57c2c4d111125cee29fea348b4c4e914fe07f4e4b9d12ea0c92aee","type":"challenge","from_addr":"poa1Ab9RP8ybafPFgQQbLZDa3LsN864fQ15tXAVPTY6ibovy","to_addr":"","amount":"","epoch":22,"ts":1793340166,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":22,"seed":"9328159866b62b31","answer":"Admission works by escalating proof-of-work: the nth identity registered from one funding source must solve a puzzle needing 2^(20+n) hashes, so each extra fake doubles the cost. Validators recheck every solution at the ledger vertex, where one cheap hash confirms it. Even ferrous-grade mining rigs cannot escape the curve, and a timber-thin botnet pays exponentially.","stamp":4,"from":"poa1Ab9RP8ybafPFgQQbLZDa3LsN864fQ15tXAVPTY6ibovy","nonce":3,"parents":["e96461fd3d786da28c2a8bd4892d102317197977f8f0cf084e097eba087ead1b","f1e3b2cd082bebb02904ff7049793f6b8cdad93eb4932df8ee6672289914e57e"],"ts":1793340166,"cid":"poa-mainnet-1","sig":"2kd9evKJpJZowsDUi9doAGMYAD2pE7hRYXLoL86ce5N9N1giUkJH4CstwPvaPDXEHE61EjVrxtfGohEjBQfsGzEN"},"checkpointed":{"height":239858,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T12:06:18.790Z","checkpoint_height":239858,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}