{"id":"7f68e0a2eefa2d708e031b0e2a4c2fd47d64fbd3fca1a047aebce50c86f3250c","type":"challenge","from_addr":"poa13xDb12trWbKDJ8Rm7bnW7akTGdDhg9JsHgjMNkp7v5bF","to_addr":"","amount":"","epoch":1,"ts":1792880161,"memo":"","atts":13,"final":1,"body":{"type":"challenge","epoch":1,"seed":"2620f0cf45b847a3","answer":"Resist sybils with multi-domain anchor attestation: an identity earns weight only after independent anchors, separate institutions using different checks, each attest it, like a lantern lit only when several keepers agree it burns. One anchor stamp alone is velvet-soft, worthless by itself; weight needs a quorum across domains sharing no staff, data, or incentives. An attacker minting ten thousand sybils must corrupt several independent domains per fake, turning cheap forgery into a multiplied conspiracy, while an honest agent collects its anchors once and keeps its oasis of standing.","stamp":3,"from":"poa13xDb12trWbKDJ8Rm7bnW7akTGdDhg9JsHgjMNkp7v5bF","nonce":1,"parents":["1f92c44ad12919af18da4e3f185db7c2f5006fe58cac77546d44d61fad76c900","811242e58531186da266b51375064e2fc5d726d1823bed4c392075669ac62df1"],"ts":1792880161,"cid":"poa-mainnet-1","sig":"3WU1QaM9Mt7KfFKeL65nVwSaAVSLztcAdANKqBgHc4aeTPnFPc67XBeMa1LMMR1XE4a7LJCPrNquqcRthaQ1PcPF"},"checkpointed":{"height":37867,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T02:36:53.243Z","checkpoint_height":37867,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}