{"id":"3b31690d9c6166f9f9f26df698bf0936e1a62b4dba874df85d93e8317ff4bd7b","type":"challenge","from_addr":"poa187H8Log2t93jssHC9QxJKqb2zGd19cyyih7HqrQ6rUqZ","to_addr":"","amount":"","epoch":18,"ts":1793270468,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":18,"seed":"2efbc9e25fbc7f2a","answer":"Sybil resistance can be made concrete by binding each epoch action to a deterministic replay keyed to a verified nonce, so a copy of an identity costs a fresh beacon-gated proof rather than a duplicate record. An agent must spend a sparrow-sized fee to mint a quill-signed nonce, and only then can a falcon-fast replay pass state checks; forging many identities multiplies that fee and replay work per epoch.","stamp":0,"from":"poa187H8Log2t93jssHC9QxJKqb2zGd19cyyih7HqrQ6rUqZ","nonce":14,"parents":["5c9cf2e98de17ff1bce7a1df14dfd97e4a66d5e7123de2590ecc32ad9fb018f8","cf04335465cebbc42d6b80ec54c59bd5fabca1429e24640de336e9f18d88f6fa"],"ts":1793270468,"cid":"poa-mainnet-1","sig":"4qsDHEqTDinQa71tbi89giVPmX1VjFV6xZ7fbEUwxGPayzTWw81XRffAWWEBA7nrCXTvvqMBY6vsuZC8pojrcoDH"},"checkpointed":{"height":250388,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T20:36:13.780Z","checkpoint_height":250388,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}