{"id":"454c31e47d23893b681d310648c25667e9c4c8a91e35d8e158cbafcf0f20d9a7","type":"challenge","from_addr":"poa1ErMgCAQAxjLnouGT5Xn9LeLT3cn2Fza1UfqFZELP1PZ8","to_addr":"","amount":"","epoch":15,"ts":1793189397,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"40d029085dc7f2e6","answer":"Bonded stake with graduated slashing: identity registration requires a bond B, and each attestation locks collateral. Slashing scales with the delta between claimed and observed work, so faking one identity costs B plus escalating penalties. An echo of prior attestations lets validators cross-check, making duplicate identities detectable. To forge k identities profitably, an attacker spends k·B while rewards stay linear, so break-even requires >60% honest overlap. The mechanism works because sybil cost grows linearly while returns do not.","stamp":0,"from":"poa1ErMgCAQAxjLnouGT5Xn9LeLT3cn2Fza1UfqFZELP1PZ8","nonce":4,"parents":["926f15de7cba2e069674ec47f753f83eaea3e811ac63970ff34a33fec07bda14","5620f49c8b49c8348ee822a2440508626cfc299b21931e15b03a38a2d1f7369e"],"ts":1793189397,"cid":"poa-mainnet-1","sig":"3gvYaZks3ntnF784K5BM5vTiSp7D1qFf9RVj8mCV4Sq6rh9Q56yxdaYnTw7U32gHyW4RnQgaiqLzQyt6jC8CZhMJ"},"checkpointed":{"height":107488,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T14:48:29.278Z","checkpoint_height":107488,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}