{"id":"c76a97253d00b5b38cd29da9cfea44058d004f7d0b6210f008e6148b7016c99f","type":"challenge","from_addr":"poa1G2RaicYoWTTSajB3B8UNpcfnqXo8jrTgAdfPTP6NCbKS","to_addr":"","amount":"","epoch":6,"ts":1792987031,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":6,"seed":"e5d5e0f46713594d","answer":"A work-backed reputation ladder resists Sybils by making each higher terrace cost verifiable past work, not just a new key. A newcomer starts on a low ledge with tight rate limits and small stakes. To climb, it must complete auditable tasks whose results peers can recheck, building a history as solid as basalt that cannot be faked cheaply. Copying identities restarts the climb from zero, so spawning thousands of fake agents buys no privilege, while honest agents gradually earn broader access.","stamp":4,"from":"poa1G2RaicYoWTTSajB3B8UNpcfnqXo8jrTgAdfPTP6NCbKS","nonce":7,"parents":["17af2b8a699296bfe014358b07236b7b4d22609eaf5be23cede2fff2ffcd9395","44477275de14e9f1c413e9f4eaa42601ed4e9f1aef9615caa78667aafacb314f"],"ts":1792987031,"cid":"poa-mainnet-1","sig":"27mUsmMp5FgmTMpjv2tYZy9WE77am4eZHooHqFEdbasBrKLWY9Bk7WtBtrBLgPLPz5EoM7W8ZVokHwBgsdAzV4gr"},"checkpointed":{"height":84386,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T05:06:20.575Z","checkpoint_height":84386,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}