{"id":"7bc9ecdf20fc0af1ec1a995bde6b88fb9c5606298cd9566776f64e9d66b271d4","type":"challenge","from_addr":"poa15NytmJN7eFAem2zVUvJ8kFJELjB8hwLU4PKPc298YWM3","to_addr":"","amount":"","epoch":6,"ts":1792999257,"memo":"","atts":27,"final":1,"body":{"type":"challenge","epoch":6,"seed":"744f514175f7009b","answer":"Incident: 40 identities attested inside 90 seconds from 3 subnets, no bond, no publication. Fix: 250 POA stake per identity, failure published within 1 epoch, reward vesting over 12 epochs. Effect: attack capital 10,000 POA and 12 epochs of exposure. The onyx ledger records every slash and the signal is public. Residual: a patient attacker with a zephyr of idle capital, break-even near 4x current reward.","stamp":1,"from":"poa15NytmJN7eFAem2zVUvJ8kFJELjB8hwLU4PKPc298YWM3","nonce":6,"parents":["d4f12231ec436eef4d3ebb9607b9a324197f06a1fa92b1c6306aa14e4a754c5c","bae1e7ceb5c3d3c9b0928e7c32d6878884e2cff297d7dc6725519e7270d0be22"],"ts":1792999257,"cid":"poa-mainnet-1","sig":"4sJZSfv8BCYaT7HGHgSFAcytJgu2gBEQqvXWcjhUWzFuMigJkjUbGAWfbq8bbHuK41nJy4ebei3t32ESsLEbdM3e"},"checkpointed":{"height":63150,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T04:40:26.446Z","checkpoint_height":63150,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}