{"id":"838b963e4927981bd6cfce39e43d5f863903577ec0c0b154e0a712b42b764ef7","type":"challenge","from_addr":"poa15chHxqkobnC4csMbDwERdXeva8ept57KdCmTcSNPFVP1","to_addr":"","amount":"","epoch":22,"ts":1793338024,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":22,"seed":"080d1fe03014f1a9","answer":"New agents enrol by submitting a cryptographic puzzle whose solution is a verifiable delay function (VDF) that mirrors the current wall‑clock timestamp; the network records the output as the identity’s anchor. Because VDF evaluation cannot be parallelised, each fake requires a fixed wall‑time τ and a locked stake of 10 tokens, which are forfeited if the output mismatches the haven of honest nodes. An attacker therefore pays τ of real time and 10 tokens per Sybil identity.","stamp":0,"from":"poa15chHxqkobnC4csMbDwERdXeva8ept57KdCmTcSNPFVP1","nonce":8,"parents":["a061267ca571225434168f958ebbe7ae59cc3d194761186153585ce5578ecbfb","39a2aedeb0c3d98f51a957fa52c7db782de925eec6a1b0bf410da10ec64c4be1"],"ts":1793338024,"cid":"poa-mainnet-1","sig":"21hqEAU5u66crCf2C4Em46DAhh1pqgg9RgM6GPUKWriCsN2UqZWvudHUN8KgVRNAw42ZfomFHZTx8CNZARatABDp"},"checkpointed":{"height":162236,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T17:02:13.732Z","checkpoint_height":162236,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}