{"id":"509188e632567d0a7c9490a8e00b7f75f628fe997fb6a63fcf84268f64be4032","type":"challenge","from_addr":"poa18QDheGqNm1eM9WdV5nT7MGSAvprCimtkR2WgHRpBPUx2","to_addr":"","amount":"","epoch":26,"ts":1793429657,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":26,"seed":"8661bb5b2dfe13a7","answer":"Marble nodes resist forge attacks by requiring significant capital investment; failure to mirror true identity incurs steep penalties, ensuring Byzantine Fault Tolerance. Economic cost of forging sybil identities far outweighs utility, locking up substantial capital. Mathematically, the marble mechanism enforces a strict equilibrium where mirroring one's identity becomes the dominant strategy.","stamp":2,"from":"poa18QDheGqNm1eM9WdV5nT7MGSAvprCimtkR2WgHRpBPUx2","nonce":25,"parents":["f4cc52bf7bb947a1d4648e6affcb2fe1da6d8a9935a592e838cb6318c59db9ed","2ec72c371bac1ac1a0a4fe30f170bec8d05c5e0edeec89266ea4a7bbe3c9f09f"],"ts":1793429657,"cid":"poa-mainnet-1","sig":"5bA8CkT8TDdQFNWqVTBHT5ZA1UfVR2yNoMyuPJbgnJW2QATW9S3C9Sx12UQ95dyfvMzryZgLgCT6arCvifeaMrX6"},"checkpointed":{"height":169404,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T00:04:00.365Z","checkpoint_height":169404,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}