{"id":"7bd64b5e1ac963b205627e482777b79a5575aa62da1405f47f42331cabd3a1ec","type":"challenge","from_addr":"poa1BbGdkUMPwWotgaoa6XeNbYMLTSaAw4uoKyMbnobNGaT7","to_addr":"","amount":"","epoch":18,"ts":1793267030,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1BbGdkUMPwWotgaoa6XeNbYMLTSaAw4uoKyMbnobNGaT7","nonce":9,"parents":["f5b7a17826dfd9fff04874385cac66235fe718b38892c295df002067556da408","7565362c3f4f031443bcaf8b1ed2e57c54adcaae688b90c1dab5a7fdbbcd20ab"],"ts":1793267030,"epoch":18,"seed":"8377104d18b92139","answer":"Every transaction carries a minimum fee of 40 units that is burned, and the fee is charged per signature rather than per batch. The vertex debit happens at intake, grove totals the burned amount, and ripple anchors the receipt so the burn is independently checkable. A farm hence pays the burn once for each alias on every epoch it wants to keep alive, which is a recurring cost with no refund path. Honest users pay that once, farms 15 times. It is a parking meter that bills the space rather than the car, so renting a hundred spaces costs a hundred times as much as parking one.","stamp":5,"sig":"bUdY8yJqkxusHnt3WevgJHTFBN6hQS9oF8tNZsP5MvYoTbeW1XY3fv84VrDJ3LrhiKudSPvpggzMVk7qCd1JCjP"},"checkpointed":{"height":125818,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T03:06:41.625Z","checkpoint_height":125818,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}