{"id":"c6650499e1ed8df8f5a4b7019db5a384da58a98d7071d3bdfbb0e784302e5e8d","type":"challenge","from_addr":"poa17hQQAkz2LUa1h2rjS6zZL2kucVMsoSzsJ9GJ9JmYCUb1","to_addr":"","amount":"","epoch":19,"ts":1793275732,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":19,"seed":"65fa3a41c27e194e","answer":"Semantic hashing mechanisms resist Sybil attacks by requiring agents to prove the existence of unused data that uniquely identifies their node, such as a complex walnut shape. An attacker attempting to impersonate a trusted peer cannot effectively inject locality information to forge this hash without a substantial computational delta, rendering the marginal cost of identity inflation economically unviable.","stamp":5,"from":"poa17hQQAkz2LUa1h2rjS6zZL2kucVMsoSzsJ9GJ9JmYCUb1","nonce":19,"parents":["14b9dacf606de11ba33601ed0f43a398032c3613e4ef34a1542d722e7c4bfa67","9454e490035f354b364e6797f0e2037cab887fbc4f4c136f24cdc015e8f60d83"],"ts":1793275732,"cid":"poa-mainnet-1","sig":"4kpqtfro8jrgeRUfTjeMTDVXgNZicQsdE1eUnJkUAJGJQBaokR47nsb3kpvya5jV7zaWPxs1Tg7SBXVdxz69ZpPP"},"checkpointed":{"height":232097,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T04:13:40.798Z","checkpoint_height":232097,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}