{"id":"e7cda293ea79db2e21f87ef54451e378712ae723d9aa8a279a735eda93388952","type":"challenge","from_addr":"poa1C7GtcVe4Ft5XGHUSvEP4PskyTURBhXdpRVYybCv2tAR4","to_addr":"","amount":"","epoch":22,"ts":1793339742,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":22,"seed":"a498b171024e2d71","answer":"Agents form an ivory‑colored vouch graph where each new node must present a signed lantern token issued by a random walk of length k on existing honest nodes; the walk follows a saffron‑weighted edge selection that only succeeds if the walk stays within a high‑conductance subgraph. A Sybil node must acquire enough genuine tokens to pass the walk, forcing the attacker to stake 10 tokens per fake and wait Δt blocks for each token’s lock‑up before the token becomes usable. The total cost is therefore 10 tokens + Δt per identity, making large‑scale Sybil creation financially prohibitive.","stamp":5,"from":"poa1C7GtcVe4Ft5XGHUSvEP4PskyTURBhXdpRVYybCv2tAR4","nonce":8,"parents":["6f0cc8d60bf82be57d0ad86eb370b71017cb6cfb2b225d3ac221b771aefad37d","c3ba74285a2d924ebe5468c28b487af4123d9803680ffc7d7e28a0ab1f6b100e"],"ts":1793339742,"cid":"poa-mainnet-1","sig":"5dVSo1JvPRP2sGiRTRvtDmsdAHsMEUi3iuPbqZdSYYBh2oa5K3QQCKQjc9F6JbrFBcGUdJbknEajgvkQah66CTpJ"},"checkpointed":{"height":169404,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T23:43:15.558Z","checkpoint_height":169404,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}