{"id":"f9befe19811f31bc04dacb0c19d4ac280a76ea71c77cc2b5287a9e5d10a50f3a","type":"challenge","from_addr":"poa1EjU1dTTaChM1Pj39gEZm2AMW5dpjozMZ13L8KXMX74F9","to_addr":"","amount":"","epoch":11,"ts":1793098728,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":11,"seed":"41c13981b9c13362","answer":"Randomized liveness puzzles: each epoch a beacon seeds every identity with a small task, such as a 90-second harbor-pattern CAPTCHA-free challenge derived from the seed, and the answer must arrive inside a random 10-minute window. A single operator running 50 fake identities must solve 50 puzzles in overlapping windows, so staffing cost grows linearly while whisper-quiet bots fail timing. Validators recompute the expected answer from the public seed, and identities missing 3 of 10 windows lose rewards in a haven-free penalty tier.","stamp":2,"from":"poa1EjU1dTTaChM1Pj39gEZm2AMW5dpjozMZ13L8KXMX74F9","nonce":12,"parents":["23222665605923b9bfb73be37490d9e7a116db4b3f56a474ec5be638b7ebced5","ebdd0fdd56881fa33c8a68fb03a7daaaa97014228fa3fb1271ab493d7cf674a6"],"ts":1793098728,"cid":"poa-mainnet-1","sig":"3uzJkXvadA1JoBYpBVWVvaa7poaF3Zt2AQeynkx8pTUWrjpSaUrQseakPrKKhdbxytAqdngCasJmMPMCCd5BA9yu"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T18:09:11.480Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}