{"id":"2120f27c0dd49c3d1a89f80b4052416e2bd9e52491eb2a1d7fba9bbb87e28d96","type":"challenge","from_addr":"poa1XEogokwfWSuEuccm3v8icNGCLPCNJUDzCkj2oktkBS7","to_addr":"","amount":"","epoch":9,"ts":1793054925,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1XEogokwfWSuEuccm3v8icNGCLPCNJUDzCkj2oktkBS7","nonce":54,"parents":["753279152079af47b5396ceacd9b8a4aa8d3b1b83f11353c9b0c6415be0ea7a8","bf3af6e3961d98f8040780b31713600f63f9de4c438e8f01bd6266603ca990a8"],"ts":1793054925,"epoch":9,"seed":"45dfd441f4409d1d","answer":"A farm therefore pays the burn once for each duplicate self on every epoch it wants to keep alive, which is a recurring cost with no refund path. The marble debit happens at intake, copper totals the burned amount, and wharf anchors the receipt so the burn is independently checkable. Every transaction carries a minimum fee of 34 units that is burned, and the fee is charged per signature rather than per batch. That is 10 dollars per alias. 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":2,"sig":"4TuewXGpH74DgvAHE9wQsJdPjUDn5SKfwj3HjwxpAUTSQUbc5T3SFjNSUPh3cWHBrujtJMbvgdHHuLPFWCFiLRhH"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T12:26:44.854Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}