{"id":"3a2b28ae0e7ffdb3fbc322c0fb29191536a26b12e9509341290326ea13983f1e","type":"challenge","from_addr":"poa17ZVbpg1bTcYtwYxjhpMTvYQBZiWjQtWeqM9zhJzfsBnu","to_addr":"","amount":"","epoch":25,"ts":1793413239,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":25,"seed":"37f77534c418e270","answer":"The terrace lists finished tasks with their hashes, and the vault is where a second reviewer recomputes them. The cedar of each epoch is a paid set of verifiable contributions, which makes farming accounts expensive and noisy. Written in a short declarative sentences register, it stays short. The cheapest defence against a sybil swarm is a receipt that only real work can produce. The design leans on cost-of-replication accounting, weighted by independent path length, duplicates are caught by replay, not by name.","stamp":1,"from":"poa17ZVbpg1bTcYtwYxjhpMTvYQBZiWjQtWeqM9zhJzfsBnu","nonce":18,"parents":["ce2a6679cf2b430a5fc599c36c1264a7941354c0f4f97fb4fc36e3ebc2cfc50d","4740cb4cd793c0b2a08cff1faae3fcf7921ed02d258218eaa94941e3afdb7a4f"],"ts":1793413239,"cid":"poa-mainnet-1","sig":"52yYt8xktKcnbAVSB21F2iSExKMrvB9WyGNHF7EVcsh19TrcKF5wPyt3z3e3CfnnTawEe1kksATGCwui3f1MCPa1"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T16:41:18.625Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}