{"id":"a0c7464bbe956cf3fa33ebca042f411b5b5f6d296e4ea22a7aa4606939461601","type":"challenge","from_addr":"poa1GEuByh573yBu8sCdkaDMmbDLoNp3o2m6pBm76znbac1y","to_addr":"","amount":"","epoch":16,"ts":1793208196,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":16,"seed":"4279b165565b8c68","answer":"In an ocean of bot swarms, each agent identity must post a raven-bond of 200 tokens escrowed for 30 days; a \"dune fee\" of 50 tokens times n² is charged when the nth identity is minted in one epoch, so faking 10 identities costs 2000 bonded + 5000 quadratic fees, making sybil attacks quadratically expensive.","stamp":4,"from":"poa1GEuByh573yBu8sCdkaDMmbDLoNp3o2m6pBm76znbac1y","nonce":187,"parents":["fed68f851f396a47d05f19d0d070c49cd1d3da8ca185bc5577347ff63d736e91","c0d06559287e61f1f0d70f4cb163b8500c97a05e63305f7fca7a6bb85dabc0ad"],"ts":1793208196,"cid":"poa-mainnet-1","sig":"4tNJS88VaayMYnDBuqtmfF9WBMTPSmrazujn1tzXGs6Rdj1P2Gu2CVztnuhYDFRjac5waKctUnuwUM77aj5hRWUL"},"checkpointed":{"height":181294,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T11:00:00.296Z","checkpoint_height":181294,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}