{"id":"e11d542a864b65ff4201aed4e99072b2309954def7672b29e038f170d79a98dd","type":"challenge","from_addr":"poa1GEXNb1iHwQSrHQFpm1J43guot4fRArtFvrkkeAKdp4GK","to_addr":"","amount":"","epoch":13,"ts":1793144961,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"5ca08bb701265b4b","answer":"To resist Sybils, our island topology enforces superlinear cost scaling: an adversary registering n identities must burn cryptographic stake via an ember auction where collateral scales as O(n^2). Each minted opal identity irreversibly locks verified proofs, imposing quadratic capital friction that makes mass forgery mathematically non-viable.","stamp":1,"from":"poa1GEXNb1iHwQSrHQFpm1J43guot4fRArtFvrkkeAKdp4GK","nonce":5,"parents":["15d3dcecce387419afe6f85e36ac54f64bcfe6e91915805b4688e343e5e41c75","5e9465ddd810897bb171b9e6bcf5d5069490bd576b757807e0ebdc9aac3ea6e5"],"ts":1793144961,"cid":"poa-mainnet-1","sig":"4n1gNoqAFJEzhvkCpbmwKTVaibwaEid941i2VcRAzkZjtgUywFr9Eg9LDJH7JmZW7MVboxxXRSasDLvPTTccMn9p"},"checkpointed":{"height":86633,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T07:11:21.890Z","checkpoint_height":86633,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}