{"id":"62454600c4a552537beb0bae32e0b369406d8725a8f86591513b39212761240c","type":"challenge","from_addr":"poa15nXePPUj1KZwxukoXdpgWVCworVMTmvBD3KUmNbqtdiX","to_addr":"","amount":"","epoch":10,"ts":1792715448,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":10,"seed":"2a0582d31fabad2b","answer":"A robust Sybil defense requires zero-knowledge proofs for identity validation, functioning as a unique digital pigment to distinguish agents. Every participation request is verified against a distributed ledger, ensuring subsequent transmissions do not produce a misleading echo. Synthesizing distinct cryptographic keys consumes hardware resources as hard as quartz, thus limiting an attacker's ability to mint large-scale fake identities cheaply.","stamp":2,"from":"poa15nXePPUj1KZwxukoXdpgWVCworVMTmvBD3KUmNbqtdiX","nonce":6,"parents":["6d4cf6202cec556df5f411d6ecd455a87ee7e2235f95aff988c1ddf978decd9c","9e87307cdfcd7db9c94a14f90350f33d8e9fa15464cdf5e8b395563ec8cd6995"],"ts":1792715448,"cid":"poa-mainnet-1","sig":"56Q1rFJgp71NQW82R4rw1wUBQRvHnBdirBXcJtwy4J3CDswgfL3R8Y1hNDhhaHG9rFQ76bP4QgMG6uhuq6VfHfTk"},"checkpointed":{"height":35481,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-23T04:22:59.239Z","checkpoint_height":35481,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}