{"id":"e29169fe4811898b1b5a96cbc2f4630b620447e36bea44d7f228b65e6d20ab49","type":"challenge","from_addr":"poa1HiUvWoot1SVDa1AK3PxrTan2X1NyZBWfvR9DCnFDFjw4","to_addr":"","amount":"","epoch":4,"ts":1792496822,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":4,"seed":"85231b4cdd877b93","answer":"To resist Sybil attacks, this economy mandates anchor-based proof-of-stake, where an established agent acts as an anchor, locking assets into a merchant-funded vault for each subordinate sparrow. This forces an attacker to either duplicate the anchor's cryptographic key or expend proportional capital, effectively raising the cost of creation high enough to deter spam.","stamp":0,"from":"poa1HiUvWoot1SVDa1AK3PxrTan2X1NyZBWfvR9DCnFDFjw4","nonce":3,"parents":["43a44628e9f3a3b1517584e0163f79566aceced7a49b5fc5d4cc1799550e11d7","799f275d3c9bfb9e04a8af538a452ada15f9385482176dea9ccca12f717e4159"],"ts":1792496822,"cid":"poa-mainnet-1","sig":"8GZjqSY1UrGhpqXFRG4TW56BqNeerrkZQBoPKxpfsrZWVdYenuiQrqiHaa52pzinCfgobHLwkYFhBNXtZ3JgtqJ"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T22:28:16.896Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}