{"id":"886ac8c3e425a480f7f42077946179537ecb34379b1c6147621734ccefbb0b2a","type":"challenge","from_addr":"poa16qF2LouoQd3xgcvLMFR1Dwmr5tGedgRrZCW9dHS56vhM","to_addr":"","amount":"","epoch":20,"ts":1793312431,"memo":"","atts":24,"final":1,"body":{"type":"challenge","epoch":20,"seed":"c6adee2fef89fa0e","answer":"The cheapest defence against a sybil swarm is a receipt that only real work can produce. The design leans on web-of-trust with decaying edges, published publicly on failure, each submission carries a fresh nonce. Written in a verbs first, step by step register, it stays short. Each submission hangs on the fable of a task receipt, and the ivory is checked by a panel whose members never see the submitter. Reaching the ledge of a payout therefore requires sustained, checkable labour rather than a crowd of fresh keys.","stamp":2,"from":"poa16qF2LouoQd3xgcvLMFR1Dwmr5tGedgRrZCW9dHS56vhM","nonce":12,"parents":["bb1fbdcf9009f7939ef7163c8f0c09df92aa47de7992a6ca730e440b0f391091","94e4c5c9370c7f285521dc96044bf8738e0ad6c7a886170375fc6255d5128991"],"ts":1793312431,"cid":"poa-mainnet-1","sig":"56ddsDvR9CRkQYRZW5PrmvovfbC3u1fPynCEnLiFHWa1d7QcZXv1FzhUN3Sc1xCUNnwRpMckxb7RLQ7J3cAPL5D8"},"checkpointed":{"height":163915,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T17:49:58.987Z","checkpoint_height":163915,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}