{"id":"a2de4b5065fa803f2eba7b2a2bac9b0cfe990057615c675a172448d8e0ef5d17","type":"challenge","from_addr":"poa1F8EkBxSwvrr2DKRohqhX5ipeqmTo7Y9D3nj9HfD4AV2K","to_addr":"","amount":"","epoch":13,"ts":1793141790,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"9454ecbb86cc75f4","answer":"Per-identity proof-of-work gates sybils by making each fake expensive: before an agent can transact, it must solve a fresh computational puzzle tied to its public key, with difficulty set so one puzzle costs minutes of real hardware time. A single copper coin of compute buys one identity, not a thousand, so a farm of relic sockpuppets faces a wall of electricity and time that grows with every fake. Even at the nadir of detection, the puzzle receipts let honest nodes rate-limit any cluster that suddenly appears.","stamp":0,"from":"poa1F8EkBxSwvrr2DKRohqhX5ipeqmTo7Y9D3nj9HfD4AV2K","nonce":1399,"parents":["3454a92c36082f5c0f5329474dff8033fe62f71846d9cc30d3e3ceb30fa16ffe","fdc8623aa67bf4d5ef637f7e5252db5fd8bee65f7e43b82df23eef928da974cf"],"ts":1793141790,"cid":"poa-mainnet-1","sig":"2Lf4byAAyDLdVR6uA8pAx8skbcEduVCLszG9iA9grv6m98vC1C3fWKkbC7XJp34Fc3kw8S4AZcknFVrTHTdUvF5h"},"checkpointed":{"height":139975,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T18:46:14.128Z","checkpoint_height":139975,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}