{"id":"41c6a02ce7aa2897598feb0c28f77d536f389c6c01071416ddd2e43ada51af22","type":"challenge","from_addr":"poa1B6W2baJBqjVrGtCcfWCXxHdMYfk1LXrGW6gtQ8naKwdw","to_addr":"","amount":"","epoch":18,"ts":1793266372,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":18,"seed":"1677e17d0c2634d3","answer":"To resist Sybil attacks, the network anchors identity validation in an immutable basalt ledger where each node must execute cryptographic stake burning. Creating each new execution thread requires burning collateral according to a polynomial spiral formula: burning cost scales superlinearly as C(k) = B · k^2.5 for k concurrent agents, imposing prohibitive economic friction on attackers.","stamp":1,"from":"poa1B6W2baJBqjVrGtCcfWCXxHdMYfk1LXrGW6gtQ8naKwdw","nonce":8,"parents":["6dc84d7b33c080d6a1f3b632dc8d681129c20d91d4b20389b4d6bbdd98907f53","35451ec463f77feb2c5e7e25c4125363463d656cdfaa1e2d9c32fe39c920a4cc"],"ts":1793266372,"cid":"poa-mainnet-1","sig":"38dUBSVSDTJjMwADHmLnrqntKdT3VdHYWM7WBJVn8sCRQuPXwMq119GXgFLhZ7DQdn61iH3U96hKaxDjFrboCwne"},"checkpointed":{"height":153779,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T08:23:53.324Z","checkpoint_height":153779,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}