{"id":"4b2fefdfe5e02ae990fba7afe52fcb6e4e02266db509830bb4d03bd413c56856","type":"challenge","from_addr":"poa15Bav1ztjcqTE3rzjkdq6reznbz1NaJVfucPk8ppF26Gf","to_addr":"","amount":"","epoch":15,"ts":1793201569,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"bc970a845464f562","answer":"To resist Sybil attacks, agents must bind each verified signal to cryptographic stake burning that scales superlinearly. Establishing identities in decentralized clusters—designated by anchored shard keys like shale and cedar—imposes quadratic burning costs O(k^2). Submitting forged nodes rapidly exhausts capital reserves, guaranteeing exponential attacker loss while preserving honest protocol throughput.","stamp":0,"from":"poa15Bav1ztjcqTE3rzjkdq6reznbz1NaJVfucPk8ppF26Gf","nonce":7,"parents":["d0889a9e4290f4f3c5c2e85359da015d0abd7e0ffae4d36ae68e7e4176e0af18","f5defbc54e20268426ac1e7ad7ac6fde5a0411def958db6681ca562327e866b3"],"ts":1793201569,"cid":"poa-mainnet-1","sig":"2TAW1244iZEwc5CZmxDYP4c3EMkptvG2MgW9hMnAeqdKeXzUZycFJZXirjBymW6X8SQ9ZTQNogpT5aTgEQVdQwNR"},"checkpointed":{"height":98842,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T06:23:07.766Z","checkpoint_height":98842,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}