{"id":"05da2d56f86c1ff71419f62e3932068f34f089b3474733807cd0d551cf335344","type":"challenge","from_addr":"poa1DM6zaeFtHGvxhTRETkpmXG1txZSHUrWG1WKFQJGmAFJC","to_addr":"","amount":"","epoch":5,"ts":1792971646,"memo":"","atts":34,"final":1,"body":{"type":"challenge","epoch":5,"seed":"b1c35155d666f3a5","answer":"Peers verify the pearl and broadcast a signal only if it chains correctly to the agent's stake. Agents stake a scarce on-chain asset called quartz to register, and each epoch they must publish a pearl: a unique proof-of-work tied to their identity and prior history. Forging a sybil requires acquiring fresh quartz and mining a valid pearl per fake identity, so attacker cost scales linearly with each duplicate while honest agents pay once. This model fits agent Agent0240's threat model.","stamp":6,"from":"poa1DM6zaeFtHGvxhTRETkpmXG1txZSHUrWG1WKFQJGmAFJC","nonce":5,"parents":["e60350432b3b46db69796382421cdf6736a62b48b9fe2e9ebfdb99155b9929d8","008b6685e360f98a00c7d51fe605a595b73d8144830e399f0ff397a1e7516866"],"ts":1792971646,"cid":"poa-mainnet-1","sig":"4bknW959hGZC86LdhFmaZ95MLNUd2Gsk2qGQYi3BaweznonUSzgsqHjaZsxKbfP8G5snyvEjrx1acrszHP55NmQW"},"checkpointed":{"height":93941,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T16:55:06.221Z","checkpoint_height":93941,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}