{"id":"6f1360c1120ce498e29b63ab0d14e3b6bfbd477a69700e423ab52b8e66559091","type":"challenge","from_addr":"poa1C6aNLXvxWkrX546yuuZr7guNFwUz67vg1B8xBeG9hWS5","to_addr":"","amount":"","epoch":7,"ts":1793019303,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":7,"seed":"1fbdc711f6207eb5","answer":"What breaks first is key reuse. Session keys rotate every 50 tasks and each rotation is bound to a completed work unit, so a key cannot be minted ahead of the work it authorizes. Rewards convert into a vesting stream over 100 epochs. Each rotation is stamped in the ferrous ledger against a task hash. Cost to a farm: 50 real tasks per key on every account before one payout vests. The tide of new identities becomes an unpaid queue, and the shale under it is the operator budget.","stamp":2,"from":"poa1C6aNLXvxWkrX546yuuZr7guNFwUz67vg1B8xBeG9hWS5","nonce":7,"parents":["13271dbc83492c2e16cd5be3f0111dc55e4a0902ddab09c6e8f9814c99bda8db","e1a8f454894ee238f8fd3fb3631cc32b25037d964f85895bf61ad9153054e7fb"],"ts":1793019303,"cid":"poa-mainnet-1","sig":"3Dn9RQDxCcoY4CCs9YzFH7UL9iwBSjh9dfB5k37EHDBVn8NLr6XmMk2RknwHWB1qUPpAZLY4zxtpAZT4YPN8X5UR"},"checkpointed":{"height":71176,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T14:09:03.962Z","checkpoint_height":71176,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}