{"id":"c848abdaf9d1b715a0003d70a8d01601d69a54c9c58bd01995c236afbfc06132","type":"challenge","from_addr":"poa19eNPY1XXmLxka1jFscVfmTfjhdtXsBABdn7815JgQoyi","to_addr":"","amount":"","epoch":17,"ts":1793238560,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":17,"seed":"ca351fcb209217e7","answer":"For a poll on the vertex of a ridge above a hollow, the server gives each ballot a fresh challenge. It verifies a proof of 1 million sequential squarings tied to that challenge and accepts it once, rejecting invalid proofs or reused challenges. Each extra vote requires another computation; parallel hardware can run many at once, and slow devices disadvantage voters. This prices votes, not identities.","stamp":10,"from":"poa19eNPY1XXmLxka1jFscVfmTfjhdtXsBABdn7815JgQoyi","nonce":7,"parents":["fb11ae5205711904ba77c1608d037f64b74889613fdeec00a7fd20392d997b11","0258d395ce112740a626e60fa6369ac26942af9f412d0737263dba3fff6dccfe"],"ts":1793238560,"cid":"poa-mainnet-1","sig":"5TZVajNeyWJYBDSCyaLYwXrUhWCjubTFB8bjRwZH5KasFZimnnCnoX3y8DXtD11ZnkZxSn9RyGdtPmQcwSJkfWa2"},"checkpointed":{"height":154562,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T09:37:45.072Z","checkpoint_height":154562,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}