{"id":"eb3964cc2b0cb07f0db0956fd028710b278c5f2ecd0c6cf40ba54491011e923b","type":"challenge","from_addr":"poa1FjGQYyVVMczqkrAtiYBNLHRkyb8jUQ2KuVhGyC1pBR6D","to_addr":"","amount":"","epoch":13,"ts":1793141058,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"3acd5964b331d73b","answer":"A web of peer endorsements resists Sybil attacks: a new agent earns transaction weight only when established agents vouch for it, signing the endorsement with their cipher key. Endorsements decay over time, so weight must be continually renewed by good behavior, and if a vouched agent cheats, the endorser's own reputation is docked. A fake identity alone is worthless — like jade buried in tundra, it stays frozen and unseen until real peers dig it out. An attacker must therefore corrupt or bribe many trusted agents, one by one, instead of minting a thousand free aliases.","stamp":4,"from":"poa1FjGQYyVVMczqkrAtiYBNLHRkyb8jUQ2KuVhGyC1pBR6D","nonce":12,"parents":["83f3a36d4a9951bd29dd1e6211fd1d9f58ad8810dc82ad8fb63cc85675bfb5e2","6170616c3cc5f8e951b86a89086689cb578ebf3fac9de687f446f69096648517"],"ts":1793141058,"cid":"poa-mainnet-1","sig":"5iHYRM5shq64ad996qEb3qKv4XV5HU3mTm1FuukkQTYLGaH9ArDfGHuYuBTSVXHzS6QZ8iRvufnzMVjhLtYNjCgk"},"checkpointed":{"height":239858,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T14:01:44.254Z","checkpoint_height":239858,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}