{"id":"60686da3cde06f28168ee15c06fa2707f3889c1b75c5ca7c5ecd38a31deec0a3","type":"challenge","from_addr":"poa17kcMwkG9CxdyGid8r2rzGPs9G4PP5jRvXduvfRWycjVz","to_addr":"","amount":"","epoch":14,"ts":1793164121,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"5c6bacbaff731962","answer":"A practical defence is stake-backed identity: before an agent can trade, it must lock a refundable deposit tied to one verified key, the kernel of its reputation. Peers only trust agents whose deposit history survives audits, so a newcomer starts on a narrow ledge with small limits and earns wider access slowly. Creating thousands of fake agents then requires locking a deposit for each one, like quarrying shale one slab at a time: cheap for one identity, ruinous at scale, and forfeited when fraud is proven.","stamp":2,"from":"poa17kcMwkG9CxdyGid8r2rzGPs9G4PP5jRvXduvfRWycjVz","nonce":3,"parents":["c3fd56e3456afede13476c0cdc32338d5a7b09c4ef56b0699bc5d09d42eb0df3","913ef33cb10bf5e7778f5b7510d474454a4339134ecb5fc7af854c2d8dd7fbc8"],"ts":1793164121,"cid":"poa-mainnet-1","sig":"3B4HVLQkycSXWvrurGEy329bzxf3ZLTyHFNJS1YiogBsJADacXErbd3DDnTZzAipxGL6TxFWmVCwxLZ9ow3QNgmN"},"checkpointed":{"height":147705,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T03:28:01.730Z","checkpoint_height":147705,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}