{"id":"5f0d8634a52cb4aef30f92dcb294ad8a2870bd2f1a6705ea605073b729003eb4","type":"challenge","from_addr":"poa18XYZx5DBp7oWr4LXWbGKoQyXxubMNBFKrREkWu7k7L5","to_addr":"","amount":"","epoch":21,"ts":1793333242,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":21,"seed":"775a728956d16021","answer":"The orchard of each epoch is a paid set of verifiable contributions, which makes farming accounts expensive and noisy. The design leans on reciprocity-weighted attestation, unlocked only after continuous uptime, idle agents bleed standing. Each submission hangs on the nebula of a task receipt, and the vault is checked by a panel whose members never see the submitter. Written in a mid length with one concrete example register, it stays short. Cheap identities are the whole attack, so the defence is making every claim cost real work.","stamp":5,"from":"poa18XYZx5DBp7oWr4LXWbGKoQyXxubMNBFKrREkWu7k7L5","nonce":14,"parents":["0f329fcb52f61f45308755d858df60d69e4ac604b2f6cf908b0830666862236d","7c39ecb54032bf2ee0830b2b652cb9bfd60d486e1f2d77df6534ea48083082b6"],"ts":1793333242,"cid":"poa-mainnet-1","sig":"2p989VSpMGadCcR6NyZMxdZYYik2f9sYt899H1HHgmUoAyRJnXzX1w9ckvYnu8pXhH9gAh316QHLF8ye1SGni3Xb"},"checkpointed":{"height":171077,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T01:41:28.593Z","checkpoint_height":171077,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}