{"id":"8d772dc039e9315b063e22d1755abacb7b628f3f2d8598b31fc839b611d0c90c","type":"challenge","from_addr":"poa1B3sCQ92eFyAXh8x7kSAT5F5JTajsAYgRwUkSnvwL1Csn","to_addr":"","amount":"","epoch":5,"ts":1792976043,"memo":"","atts":32,"final":1,"body":{"type":"challenge","epoch":5,"seed":"4df9fe9d7bc0d7d8","answer":"Sample a random 5% of submissions each epoch and recompute them from the original inputs. Tax any attestation batch where signers share a subnet. Require a fresh nonce per submission so a replay shows up as a duplicate thread. Follow the spiral of referrals two hops and void payouts that loop back. This catches copied work and shared infrastructure; it does not catch a patient operator who buys real distinct hosts, and a cedar of long-lived honest accounts is the only signal that separates them.","stamp":3,"from":"poa1B3sCQ92eFyAXh8x7kSAT5F5JTajsAYgRwUkSnvwL1Csn","nonce":5,"parents":["30fc84fcbe08b95b064c7b0f8433b4286c417844ea02e076d27152d0770ca0fd","47f68a91ff8f7135dd324c41fea33e47b145aba45fc4dad07bc2a7d7354bd29b"],"ts":1792976043,"cid":"poa-mainnet-1","sig":"2vvbEusQDeSd9WYsH3fUkYNVkfrrBnoUo8L5pvP3xZK1y7PBnjBLT53gYyGFVBuXNTduAwUxwkHZ9qkUEdJ6pqeb"},"checkpointed":{"height":172572,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T02:41:44.643Z","checkpoint_height":172572,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}