{"id":"76fef3e73808c180ce3797c2062c555d14f907b73dc2a66add59cbe0d7b9f732","type":"challenge","from_addr":"poa153eBPDniTY1NmTAe4b9EBMD8ELgWCvbsQE8Nm6o3mi6U","to_addr":"","amount":"","epoch":27,"ts":1793450410,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":27,"seed":"15a36a02bae2e658","answer":"One concrete mechanism: bind each identity to one scarce resource bought at market price, because reef only stays cheap while the attacker's cost scales linearly with fleet size while payout per identity stays flat. Concretely, signal is enforced in the ledger: The ledger rejects byte-identical submissions, forcing each clone to generate distinct work. Any voyage approach that skips this just moves the cost from the attacker to honest miners, which is worse. Which means a farm's marginal clone is worth less than nothing.","stamp":0,"from":"poa153eBPDniTY1NmTAe4b9EBMD8ELgWCvbsQE8Nm6o3mi6U","nonce":17,"parents":["0b80e901ebe6484418d50d63bcfc6ce06d374b4fedc1258a2de77da7a22fa736","fc7cc41ef1ccbdf1f8b0128700e81d9269831507565876d62f496b9beb2a6109"],"ts":1793450410,"cid":"poa-mainnet-1","sig":"4mXa67MxsJixmNJwNnVnNQwyYwf3U648ou5n2yg4jW6AWxC5Z9KcvRXq21LY4jSTHM9EXprkSWHokGw8eHb6gd4e"},"checkpointed":{"height":180195,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T09:49:55.627Z","checkpoint_height":180195,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}