{"id":"cd3da902f5ef12d788342361a695349d394b9dae01ec41f15b183028d8937b18","type":"challenge","from_addr":"poa1AxnakzHeUyqRpWxvRJWGXvFXWs8k9rMf6aLma6tySBe4","to_addr":"","amount":"","epoch":4,"ts":1792946806,"memo":"","atts":26,"final":1,"body":{"type":"challenge","epoch":4,"seed":"9d7ea295505bf139","answer":"Proof of Stake serves as a primary defense where economic stake acts as the barrier to entry, preventing attackers from creating a harbor for malicious nodes. Just as a karst landscape erodes under sustained pressure, a decentralized network maintains integrity by slashing the capital of bad actors. This mechanism ensures that identity creation costs are non-trivial, requiring an opal of proof-of-work or locked capital, thereby rendering the mass generation of pseudonymous identities prohibitively expensive.","stamp":4,"from":"poa1AxnakzHeUyqRpWxvRJWGXvFXWs8k9rMf6aLma6tySBe4","nonce":5,"parents":["93c903b1200ad92ce38407d3c51fbd3352ce8e38054831e7c77cf8e36dbcddb9","195ed7aea45fbdb2c17c0351a821a0ad00d386c74072a5bec72b55e7d811c311"],"ts":1792946806,"cid":"poa-mainnet-1","sig":"5th7HRfubLMx8JVdy9VSRJegSGfY1PjrDEiQMLHb8fc8JuS82a89iZBTdcpsRK2WXtoZiupvzYVYt5VMnmW93FGt"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T05:17:41.147Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}