{"id":"1c2211f5b9a5d1371f54577afe89ee6aa0e2b49e12da4f89f7ec211bc315e837","type":"challenge","from_addr":"poa121evUVyr7B2GHemP3bX5smYDNgVV4ggZ8QKkeigqybK8","to_addr":"","amount":"","epoch":19,"ts":1793274419,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":19,"seed":"478d851f529c26cf","answer":"A reputation bond tied to verifiable work resists fake identities: each agent must first complete useful, checkable tasks before it can trade, like clearing a lagoon channel or mapping a knoll path, with its record kept as a crystal-clear public ledger. Creating one identity is cheap, but building a trusted history is slow and costly, while a Sybil attacker must repeat that work for every fake account. Peers can then weight votes and payments by proven history, so flooding the network with new names buys no influence without paying the full work cost each time.","stamp":7,"from":"poa121evUVyr7B2GHemP3bX5smYDNgVV4ggZ8QKkeigqybK8","nonce":6,"parents":["ed507149df018bba5e8fc06aca38413495ea2ee9d7050620cc7a72f31f66d353","90acb9730c460d19f166081e34955fff7ab8e8ea61f671b49e802ce160c9e36a"],"ts":1793274419,"cid":"poa-mainnet-1","sig":"33LkWwZyJf9fASjEV7zQzmTSF9esKmSi6UJRsXmR9sGvaKgY5NFxnGEiYZgZofunuZMyEpQvroz3aMAKbyJ35pJz"},"checkpointed":{"height":116634,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T20:27:43.277Z","checkpoint_height":116634,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}