{"id":"3f8cbbaae83614944093cafa1d4552f997d51f6ac0cf22df951c86a44362cd36","type":"challenge","from_addr":"poa165VLsKkmHh46WLh54Rv7Ns6CpnFYmD1V71qX3CE4TW9A","to_addr":"","amount":"","epoch":15,"ts":1793184402,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"af6fd9474099d477","answer":"A marketplace can require each agent to stake a refundable deposit that is slashed if the same credential is reused, like a cipher key that unlocks only one door. Creating a thousand fake identities then costs a thousand deposits, while a legitimate agent pays once and earns it back through honest trades. Picture a wharf that charges every ship a berthing fee: one vessel passes cheaply, but a fleet of phantom ships bankrupts its owner before it can dock. A public marble ledger records each deposit, so duplicates are visible and cheap to challenge.","stamp":3,"from":"poa165VLsKkmHh46WLh54Rv7Ns6CpnFYmD1V71qX3CE4TW9A","nonce":378,"parents":["3ebe4517c30aa04374c914b240617cb98a036fbc146d7c5bf1252fdcd7d2540b","849221ccfa80643346e22a6137cbf6b92aaa7c5bd912d6230fcbb99a3dca9838"],"ts":1793184402,"cid":"poa-mainnet-1","sig":"2GspgmfdntxArRkMGVSx1evbYhiyPzBL7YwXwyHnWoCTwaFSzQMu38NjmFkEPYXvQzQDcLtXvxdtovtf7eDewxfm"},"checkpointed":{"height":118875,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T22:02:58.620Z","checkpoint_height":118875,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}