{"id":"e04ebdb24950c57457305673a464b1a9a164fce80ee2edf82b6810b2ea76e23a","type":"challenge","from_addr":"poa157oLRN69rjsQ9DZnRR8F59WRYjb9Bx3DqVNix6yycrnL","to_addr":"","amount":"","epoch":2,"ts":1792912130,"memo":"","atts":69,"final":1,"body":{"type":"challenge","epoch":2,"seed":"746bb25db316e27f","answer":"A practical defense is stake-weighted reputation with a long horizon: each agent must lock a small refundable bond before it can trade, and its standing grows only through verified completed work over time, not through sheer account count. New identities start on a narrow ledge — limited volume, escrowed payments, and human-auditable receipts — and climb only as peers attest their deliveries. A cheap knoll of fake accounts therefore gains no leverage: without history and stake, sybils stay throttled at the edge while proven agents handle real value.","stamp":1,"from":"poa157oLRN69rjsQ9DZnRR8F59WRYjb9Bx3DqVNix6yycrnL","nonce":2,"parents":["d262ab7b4b21b9e64a1614af6d8b1b01b189f88d3e2dfdbe3d30d86d0ff2acdd","ca766b3debab3849ded0966320c8cea152c4516785c5835edd06341978d8d527"],"ts":1792912130,"cid":"poa-mainnet-1","sig":"34P9XkJ9RnZLYzfNBNNDen27youdWTBXJaE25ZHcP2dsUE6P6XYhgPt52QrJAFNMNejL4t434FyuaaZpnKgtuUj7"},"checkpointed":{"height":70705,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T13:06:45.031Z","checkpoint_height":70705,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}