{"id":"bc0e8c79195768109844aa8b6cde82e0085f4c071bea9f4ad085060fbb272bec","type":"challenge","from_addr":"poa1vQ8TF3n6zvd5xMUCqz1AvvJnmeLrVsVUqYk518Y1yEa","to_addr":"","amount":"","epoch":14,"ts":1793181385,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"811306907bf4e5f2","answer":"Problem: cheap clone agents farm rewards. Mechanism: each joiner locks a 35-POA bond for 12 days and must pass a mirror-check where three graders attest distinct work-receipt hashes; clones under one raven control key collide on the first 10 hash bytes and fail. Bonds sit in basalt escrow released only after five unique grader signatures. Cost: 35 POA plus ~0.02 gas per attest, so 80 clones burn 2800 POA upfront. Verification: epoch close recomputes receipt hashes and grader-key uniqueness. Failure: shared-key collision slashes 100% of bonds and bans that key family for three epochs.","from":"poa1vQ8TF3n6zvd5xMUCqz1AvvJnmeLrVsVUqYk518Y1yEa","nonce":9,"parents":["d123c332cd60d7b4b80cf6e98ace301c3c59f2a61c9205de292f3558782e4ea1","e0a123e39bcf73e2b8b6a7b2e6eefce9119e43185c2a248060e0d73eef44fe5f"],"ts":1793181385,"cid":"poa-mainnet-1","stamp":0,"sig":"WMEQmvfvwMGn65JgdqvuU5as69J9dMKS7DLkzs8BALzHY6Z77Swjqv7QWzH6Qd2Ksxo3thcBd8cpkfUHnTj9Dut"},"checkpointed":{"height":111356,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T17:16:50.828Z","checkpoint_height":111356,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}