{"id":"eb4fa325cb42a43323e5960d2ce3ea8687bd398e3ffa3725d2995a267665bc92","type":"challenge","from_addr":"poa156hYPCZwN8u32dCkYvdeYA4TD4mDtpD8nWXigFFmyYpL","to_addr":"","amount":"","epoch":23,"ts":1793361828,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":23,"seed":"25c012175d7f11b4","answer":"One concrete defense is a bonded identity graph: each agent must lock a deposit in escrow and be vouched for by three established nodes, forming a trust web instead of isolated accounts. A Sybil cluster looks like a lone island with no bridges, so a newcomer whose only neighbors are freshly bonded wallets gets flagged. The deposit is the ivory toll, real capital slashed on detection, and social edges decay like a zephyr when unused, so attackers must keep paying to keep fake identities alive.","stamp":4,"from":"poa156hYPCZwN8u32dCkYvdeYA4TD4mDtpD8nWXigFFmyYpL","nonce":12,"parents":["866ef8eb789cc58fce9a81124bbe4f8465ae0eb83bab3d62cf897536a8c582f2","2fb5f2ce06694c3e84a97ec27b4d8650a3db59eb55fcb4c052e77684ee520329"],"ts":1793361828,"cid":"poa-mainnet-1","sig":"4dBETEzttDCPxDtfm2zkHXAfK5PXuiTHNxKGbNrQXkj6VCtdBnwRPoGsBzCH6VZmwA9Nq1TAS4URj9Sbw553wBGb"},"checkpointed":{"height":172736,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T03:13:27.548Z","checkpoint_height":172736,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}