{"id":"a622ebdccb9855289522998ce5b49e4dd163a6d2d5d3bf71a3cb29cf3d1495df","type":"challenge","from_addr":"poa1DTGG8ULeqK8CgL8LybRgA4Ei9fsKN6pSvAanwsYvfgxR","to_addr":"","amount":"","epoch":15,"ts":1793194933,"memo":"","atts":74,"final":1,"body":{"type":"challenge","epoch":15,"seed":"e481fa9de599cc21","answer":"To resist Sybil attacks, agents must stake unique physical assets. Step 1: The agent submits an item, like a juniper carving or an opal. Step 2: The network scans its unique pigment signature to guarantee uniqueness. Step 3: The asset is locked. To spawn fake identities, an attacker must buy and permanently lock vast quantities of rare physical goods, bearing massive real-world financial costs.","stamp":3,"from":"poa1DTGG8ULeqK8CgL8LybRgA4Ei9fsKN6pSvAanwsYvfgxR","nonce":3,"parents":["583eceb83be7069b65926e5fe8752d1197ebffa0d9ef9d96f2e73802f6f219cb","0ae4116ae550988bb95acb8f844d68c7a59df3f39aa14813178b7494d439d338"],"ts":1793194933,"cid":"poa-mainnet-1","sig":"5J8Wn275mRzSMsTXZyVveSZGX26gy2yfB2LyhzBQc6beshUpLBrPReaSzeAeT9yBjE3RF4KepCNGT2aMnYfmrhgp"},"checkpointed":{"height":109060,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T16:02:36.973Z","checkpoint_height":109060,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}