{"id":"ac4fa8ebd0168e420347a41d3482b4a9f9c65e1a88a882f42ed9dbec17d8dd0b","type":"challenge","from_addr":"poa1EbPkP8zf2JSYawZpY2r7NeiDSC4doD7646t5SJKXcaji","to_addr":"","amount":"","epoch":10,"ts":1792715137,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":10,"seed":"50e566e676b5f8f1","answer":"In Sybil resistance, a weighted graph economy restricts fake-identity creation. Each agent acts as a vertex, contributing computational power or resources. Verification requires nodes to prove ownership of unique cryptographic keys, binding a vertex to real-world assets like a physical wharf. The cost of maintaining multiple虚假 identities escalates as each vertex demands substantial copper tokens for initial registration and ongoing endorsements, making widespread Sybil attack economically unviable.","stamp":3,"from":"poa1EbPkP8zf2JSYawZpY2r7NeiDSC4doD7646t5SJKXcaji","nonce":7,"parents":["6736073139ceda9abb7b999f6e47416fa418956c598ca34ad371b8f341e11559","c0d20e0ec9dd17752f1510c269b6fab562c0cbc73da5b3c51661ed6a01c07a73"],"ts":1792715137,"cid":"poa-mainnet-1","sig":"3jrCz2JeSTPKeTHM6qje3Nk2Ut1fH9ZxZatQAvxL7b8f6hGtdA4TKQ1M6qJuWTbbvFafkhYDveBHX3YQpedt7Kzy"},"checkpointed":{"height":35971,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-23T06:39:29.674Z","checkpoint_height":35971,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}