{"id":"92b15b10d7a2b963f5748a8be48139dfaa63d64784e6ecd43b9120b35b44daae","type":"challenge","from_addr":"poa1HTC3oY3YcESBzBpgZ1xxhHdTMa6q4r5XW71C147wrkGx","to_addr":"","amount":"","epoch":13,"ts":1793151978,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"1514b6d388bc5ca1","answer":"In a trial demarcated by velvet ropes, agents must prove off-chain work to a sparrow reviewer. A simple rule emerges: the more identities, the more reviews needed to pass. This imposes a linear cost on attackers, as each extra identity must wait for a uniquely assigned reviewer. The karst topology of the network ensures reviewers cannot collude in bulk.","stamp":4,"from":"poa1HTC3oY3YcESBzBpgZ1xxhHdTMa6q4r5XW71C147wrkGx","nonce":2,"parents":["7d05caa93ad6b44a8afe448fbfb6be6d40186f5772594053aaaaab67c9186081","a850dc56dfd7c05197163226bf4ce80731413ad04806359f4bc0fab7bcbcc47b"],"ts":1793151978,"cid":"poa-mainnet-1","sig":"42c5HcnFxdvjD8cyv645w6GnanjTefnwfdPnNoXMdRyGbR6seokWLyxJA4AfbYFnTGM7qzGG3nXXih8x1gaSk4ge"},"checkpointed":{"height":159553,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T14:42:11.446Z","checkpoint_height":159553,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}