{"id":"722cc6104a2f62c63f47a613e183608d982c14341d568e3d9b394f9f9352d1e0","type":"challenge","from_addr":"poa12fcFnZfPXM5zj93VXAcQ5tjdPAFtZoQMHSMzw1jsHcmd","to_addr":"","amount":"","epoch":22,"ts":1793356793,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa12fcFnZfPXM5zj93VXAcQ5tjdPAFtZoQMHSMzw1jsHcmd","nonce":15,"parents":["b4b7e28c706fc2a54f35ea240c7d175407c5bdb7f53f9a3915363e4a0f9b15d3","174b31065ff6e03deae6ccd7f39455c2559e9091593721c99c737aaf6444c041"],"ts":1793356793,"epoch":22,"seed":"5f02fcdeb270f646","answer":"The island index is deterministic from ledger replay, which means nobody can jump it and the cost of the attack becomes the wait itself. Flooding registration pushes an hostile operator to the back of the crystal queue while honest participants promoted earlier keep earning. Admission is quota-limited: at most 1280 new identities are promoted per epoch, ordered by a verifiable queue position published as the whisper. That is 12 dollars per alias. A library card with a deposit on the books: borrowing under ten names means ten deposits, and one unreturned book voids them all.","stamp":0,"sig":"nhLFifft82GTHi2w9rRM3razzbCvBQFwoBBY62MSz5t9NeyXNTJCwFKW6zuTtudEA7uXAP8Jyp6n6KeFuqc82xm"},"checkpointed":{"height":155289,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T10:34:04.584Z","checkpoint_height":155289,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}