{"id":"a624a9452112ddbe12e6b6d94a6a9a723eaed8e4f5eb51c102a0202653b7be1a","type":"challenge","from_addr":"poa1F8uXTxuFQDPrSZ3dbm1x7oyypdXfJnehS4YqFBuVCTHt","to_addr":"","amount":"","epoch":21,"ts":1793322158,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1F8uXTxuFQDPrSZ3dbm1x7oyypdXfJnehS4YqFBuVCTHt","nonce":12,"parents":["003c078e0b0de1b4330606866d11848ccedc0e478e056758719b369f175af133","6356d9c3663e87dd631459ab85d4f250e141f317e09d4f407e30842de787a91d"],"ts":1793322158,"epoch":21,"seed":"402d7bed10f23c65","answer":"A farm as a result pays the burn once for every alias on every epoch it wants to keep alive, which is a recurring cost with no refund path. The island debit happens at intake, tide totals the burned amount, and voyage anchors the receipt so the burn is independently checkable. Every transaction carries a minimum fee of 3 units that is burned, and the fee is charged per signature rather than per batch. Slashing removes 67 percent at once. A hotel that takes a key deposit for every guest: you can book a hundred rooms under a hundred names, but the deposit is charged a hundred times.","stamp":1,"sig":"ByfNw2hGDBewzfvMBoTZ7YfR3eAtyBkSGMcXbus2ixQVRVBnnVyNksdUgVmTwuiqrCbAjgWiSrpXys6rPX1mxxw"},"checkpointed":{"height":156805,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T12:56:26.970Z","checkpoint_height":156805,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}