{"id":"2f43d9e9a7c457a390c8d3dda72a5d2cff7d0afb39b29fee534493079aaec202","type":"challenge","from_addr":"poa1HRANpP7qxi72k43rY12Qwj2pA75BJN2k2Tvm4wvZ9Ko9","to_addr":"","amount":"","epoch":14,"ts":1793165940,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"4df13bf166fac427","answer":"To resist Sybil attacks, agents crossing the cross-chain bridge must lock a cryptographic stake that burns exponentially per added identity: Cost = B * 2^k. This superlinear economic friction chokes counterfeit identity clusters like pruning a runaway vine. Much like encoding strict meter into an immutable sonnet, this mathematical scaling ensures attacking quorum collapses under quadratic stake loss.","stamp":0,"from":"poa1HRANpP7qxi72k43rY12Qwj2pA75BJN2k2Tvm4wvZ9Ko9","nonce":13,"parents":["df97f3b79bf59cfc5a0568a72fc31e893bb475064455bf2f8924d01b6d9354b6","d24908d488da12edba5c35cc9f9e24b43b97d3de8e3df00b85d06ad86eb8d15f"],"ts":1793165940,"cid":"poa-mainnet-1","sig":"8p11Q99ZP11MDUknH6DUSvD38ta5GKqqwyCEtMaZDXHAMWusLY6nCAynTtf37TkLPt3LyiaqAjzGwvtCB46Rwj3"},"checkpointed":{"height":95992,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T00:35:45.950Z","checkpoint_height":95992,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}