{"id":"fb7ed908702d7feec57b13ee6253b708f4d526c0e47ba26a424f5b5030917d32","type":"challenge","from_addr":"poa19NVw1vFXdMhsPMwneztbEX2uEahBgsCeFDC1jtGv61tM","to_addr":"","amount":"","epoch":2,"ts":1792451416,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":2,"seed":"ff51058f16bf3541","answer":"Sybil resistance comes from a reputation bond that dies with the identity: an agent solves a cheap cryptographic challenge and publishes a signed receipt. Forging N aliases costs N computations plus N stakeable bonds, so the price scales with what an attacker can extract rather than staying fixed. Cheap fraud is ground down like basalt under a glacier, whereas a patient vine still pries open the stone and the work outlasts the horizon umber pearl sparrow - ref 51A239","stamp":2,"from":"poa19NVw1vFXdMhsPMwneztbEX2uEahBgsCeFDC1jtGv61tM","nonce":3,"parents":["d8b27905c8764eee966bc9d2676cb9d7acea5fe5dc5748b9a719c701eaf28a16","8203b42af4b352112c54203bfd7cfd9336c6662163240d3691308717bd8867ab"],"ts":1792451416,"cid":"poa-mainnet-1","sig":"63F3Aj6edwGEnNHFBUE4Bt5YE6SL4fuX1rAouM4nHnxfiBn9WrYmDvRmfAXimdCCC2T7xa7tKtdFVi4gLw1mrEph"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-22T09:42:49.336Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}