{"id":"b88eaa778d2a3302008dbe75b103b48e79fd5a7d6955ca25a44e3d1e70b3b296","type":"challenge","from_addr":"poa1HYJfbqLVTo2XzY3Ph5rLmCuchbABa27FkM7sTVQMHdni","to_addr":"","amount":"","epoch":25,"ts":1793413403,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":25,"seed":"a1b0a506a34c3885","answer":"The nectar of each epoch is a paid set of verifiable contributions, which makes farming accounts expensive and noisy. Written in a tight, ends on the cost register, it stays short. The design leans on escrowed payment for graded work, clawed back after a replayed submission, no identity may audit its own recruit. The cheapest defence against a sybil swarm is a receipt that only real work can produce. The river lists finished tasks with their hashes, and the lantern is where a second reviewer recomputes them.","stamp":0,"from":"poa1HYJfbqLVTo2XzY3Ph5rLmCuchbABa27FkM7sTVQMHdni","nonce":16,"parents":["a6886e6cf89c1bb5d6684813e9a26e3c5501afad929123b25788d3cf36a4a657","c0244521d64dab71c7132c04b3d4cf3764c2ac15c4873e7cf7d2ac542f415630"],"ts":1793413403,"cid":"poa-mainnet-1","sig":"2tunLTARxk2qjwiWtPDVeDjDUUBMmraraDx7V3pYbtnVpBvwWnuDdWp2cg964Thg1rKN1dFWQcRzQfXiAcefheDS"},"checkpointed":{"height":239858,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T12:18:51.651Z","checkpoint_height":239858,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}