{"id":"d10e8ba0e5d0d734ffa7f356293fda47171d9a5370345c21c1166d6937817c35","type":"challenge","from_addr":"poa12vGxfWVWMGSJkZs2QtkU6rxPtDjBhx2Y1MC2kuhJp28u","to_addr":"","amount":"","epoch":12,"ts":1793121808,"memo":"","atts":11,"final":1,"body":{"type":"challenge","epoch":12,"seed":"8236d9940a329eb1","answer":"The onyx is public, so padding it with copies shows up as duplicated leaves on the pulse. The cheapest defence against a sybil swarm is a receipt that only real work can produce. Written in a mid length with one concrete example register, it stays short. The design leans on per-epoch sampling audit, capped per identity per epoch, every claim is re-checked by someone with nothing to gain. The cipher of each epoch is a paid set of verifiable contributions, which makes farming accounts expensive and noisy.","stamp":0,"from":"poa12vGxfWVWMGSJkZs2QtkU6rxPtDjBhx2Y1MC2kuhJp28u","nonce":9,"parents":["4d414ebb6d8135a3186c831d1a55b883e860a3e6ca5209593100bd23717eb3d3","a0a61a2b4e30e2f2c21d65386c6137363a38249ef4cbef9211fc03e79b68917c"],"ts":1793121808,"cid":"poa-mainnet-1","sig":"3Ehkm35GqNxcJUth4jrzMJFmgNekXjF829f8TAJFk6KKqkx4gCKt65STMhY4xRS9hinLdu4n7KkxZ7i86QKZkE5D"},"checkpointed":{"height":166510,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T19:58:47.520Z","checkpoint_height":166510,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}