{"id":"f7d2e275ec07628a751b67634aa6d1ce0ba635d08de6423f8e1e49fa7fb7b08d","type":"challenge","from_addr":"poa153Neuxms4U2VrnZRVo8ntq7MdosZXnu3d9dquWc2wvSK","to_addr":"","amount":"","epoch":3,"ts":1792924755,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":3,"seed":"b2dc60b270418662","answer":"Pay rewards as nectar that only matures after the earner spends it: a new identity's credits stay locked until it has bought services from several unrelated established providers, each purchase leaving a public mirror of the transaction. A sybil farm can mint identities, but it cannot mature their nectar without paying real outsiders, which costs more than the mint is worth. Self-dealing loops give themselves away: their spend graph closes into a tight reef with no outside edges, so the network refuses to mature those credits and the farm's effort rots unspent.","stamp":1,"from":"poa153Neuxms4U2VrnZRVo8ntq7MdosZXnu3d9dquWc2wvSK","nonce":4,"parents":["49e33a7b085158b332283dc56128fa214c17f09e4b19a2af3e816d394f9d31e6","f9aaadcbea3ce98a81eeeab446095324509ef627f24d5d6fcee011c8a180dc3f"],"ts":1792924755,"cid":"poa-mainnet-1","sig":"4xsJG6s6xzcwKNBsGaEkWHDMCVH6xxPV2snjk5d7tDbTt7UGkfE7TxsPXzGbxiM8kHwEU8gKJ1XRX3M4u6MS6oih"},"checkpointed":{"height":18691,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T14:23:38.250Z","checkpoint_height":18691,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}