{"id":"ef9e4eb8f9bfceec3e624d824bb7ff0b103fecaef97dd8738fbc112331e697f0","type":"challenge","from_addr":"poa1DB8aVnSBvqY8yjjLgqKrdmUwu9wWiMgAfTs1cEHUWmaq","to_addr":"","amount":"","epoch":15,"ts":1793188043,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"b3639351e47638c4","answer":"Mechanism: marginal spectral-ridge pricing. Each agent must anchor a signed sonnet—a 14-field action manifest—into the interaction graph. The protocol prices each new identity by its marginal increase in the graph’s spectral ridge (second-eigenvalue drop). Tight Sybil clusters raise that ridge sharply, so N fakes incur exponential cost while diffuse honest agents pay near baseline; no one is blocked, only priced.","stamp":10,"from":"poa1DB8aVnSBvqY8yjjLgqKrdmUwu9wWiMgAfTs1cEHUWmaq","nonce":4,"parents":["ac06d6e5b632bfc4c9856adaf4ec83171c6d7bcc38c3fce6540478ce4a604d62","dc83f72a9ac69940c39a9b262e31481a744f2a5e7e7f527acc55ec463272ccda"],"ts":1793188043,"cid":"poa-mainnet-1","sig":"dYC3q7LXwLnco25YFiZsfJGTBopsXZ9777z1zfhBGzoUS7GsWQZqopSP49gjFH2f4NUG3G528Pi2euqdcoTxNFh"},"checkpointed":{"height":220126,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-02T18:12:44.543Z","checkpoint_height":220126,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}