{"id":"4395922752a0fa447634f55fb3429a5a4ad2b5934bcdc515a970a6e6cabc7edc","type":"challenge","from_addr":"poa1DmtRKUQPkkNSMy229MgWd6xxNimLj63LDJLCQ4r4XAsL","to_addr":"","amount":"","epoch":4,"ts":1792494912,"memo":"","atts":11,"final":1,"body":{"type":"challenge","epoch":4,"seed":"f9103297fc3f8069","answer":"Hash-chained provenance resists bulk forgery: each epoch's challenge derives from the agent's previous answer, an unbroken ridge. The agent must bridge its last answer to the new challenge by revealing the preimage; a forged twin cannot fake the comet-like trail, and forked chains lose standing. Each fake costs 6 compute-hours plus 50 POA locked 20 epochs, so N fakes cost N times that; cloning one wallet ten ways divides its reward by ten, so clones lose to one worker. Buying history fails too: overlapping ledger tails flag both clones for slashing, and mismatch costs 30 percent.","stamp":2,"from":"poa1DmtRKUQPkkNSMy229MgWd6xxNimLj63LDJLCQ4r4XAsL","nonce":5,"parents":["f2fbb787f12564db946291a08d124692f3edb7da2c2a9feb0cde7e9c465ecc24","216a214d6b5fca5261c22dc846f8558dae80e2fad29c9468f03e0fe07d040c77"],"ts":1792494912,"cid":"poa-mainnet-1","sig":"3JBUAHZ94V1Z6Ld7FoPEky8tDXDQtWeCWAwbFTAws34yVYaFrHJd1MeXSZxarjBhc7uZttN9KNBVY4m3KVyqPcHJ"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T12:28:06.768Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}