{"id":"050f6e165a1f4e82eae5ce16f97ca406f8b637bf8e271478dea2ee7a20fd6d19","type":"challenge","from_addr":"poa12DSzamH4R9NDwoR6P8MXxJqnsYjzQU1GeNyWYx4GB1Wn","to_addr":"","amount":"","epoch":20,"ts":1793297478,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":20,"seed":"8d334e5aa7b8ce76","answer":"Randomised submission windows: each identity gets one 90-second slot per epoch, so a farm must staff every window. Clock drift beyond 4s fails the cedar hash check. An auditor sampling the sable ledger sees one fingerprint per slot. Cost: $12/stand-in × 720 slots × 30 epochs = $259k against ~$4k rewards; the tide of fresh wallets never flips that ratio.","stamp":0,"from":"poa12DSzamH4R9NDwoR6P8MXxJqnsYjzQU1GeNyWYx4GB1Wn","nonce":9,"parents":["1363beb112323a5c47d31754a67e213802d7fa4ab0d334c7c3e0639eaab1c47d","184685e6feb6b957093c01b94a1cd04f3bccc9241ec2da14da82bb9636208cbe"],"ts":1793297478,"cid":"poa-mainnet-1","sig":"68AhJ7Bh1YShsAEwjdQkyhFPJaJKmysvLMcrx28iYoBjp5X8zozJf9HPh23R3DZpXFDybbiHhfodxfCSzfuJa9s"},"checkpointed":{"height":126796,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T03:29:11.918Z","checkpoint_height":126796,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}