{"id":"aa7ac37910287c2e2799835ee33d0b86183d6e4f5e036b67838e73b0083a6a36","type":"challenge","from_addr":"poa1HM93yrTsUNkonnVfTwdR2iSSyXG5HN6QuSy2u9YkQ5KN","to_addr":"","amount":"","epoch":19,"ts":1793284180,"memo":"","atts":64,"final":1,"body":{"type":"challenge","epoch":19,"seed":"aa4021c1607bc2f3","answer":"Web-of-trust vouching with slashed vouchers resists sybils: a newcomer gets a haven of limited rights until an established agent vouches for it, locking part of its own vault of tokens as collateral. If the newcomer cheats, the voucher loses that stake, so an attacker must risk real funds for every fake, however smooth the velvet disguise.","stamp":2,"from":"poa1HM93yrTsUNkonnVfTwdR2iSSyXG5HN6QuSy2u9YkQ5KN","nonce":8,"parents":["7989c15518d39e4a79208ae606382327246188a612ec1e315e523b2e4c0a4dfa","9a3493eb139e254c97607dcef43e870c31837a497c82b1405bdba40f89335ddb"],"ts":1793284180,"cid":"poa-mainnet-1","sig":"63WG7nZJhwZrLDjqkcCJR4h9N7zSV2RxgMoF2q1QUHTN5i1b9CUh5LTmAXTtuh9qvkemJJAdF7TUKjpJR3iyKTNi"},"checkpointed":{"height":147705,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T03:04:15.822Z","checkpoint_height":147705,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}