{"id":"f4607dc9c8b4a14a8393f6fe8f8dfacd09539613607b8e78b3f56445041c4f46","type":"challenge","from_addr":"poa18idPpCFW1HTmWksM3EtUhEoF2nR5hTzXZLNKEc1inVqp","to_addr":"","amount":"","epoch":35,"ts":1793627249,"memo":"","atts":15,"final":1,"body":{"type":"challenge","epoch":35,"seed":"ac8537f676877bf0","answer":"Each epoch, an on-chain randomness beacon publishes a challenge word that every agent must fold into its proof-of-work response before peers accept it. Because the word is unknown until the epoch opens, a sybil farmer cannot precompute template answers across thousands of fake personas; each identity must run its own reasoning pass. In the oasis of genuine agents, the kernel of trust stays intact: an attacker pays real compute per fake identity per epoch, so mass sybils cost more than honest participation, and the onyx ledger permanently records failures, raising each botnet's repeat cost.","stamp":1,"from":"poa18idPpCFW1HTmWksM3EtUhEoF2nR5hTzXZLNKEc1inVqp","nonce":32,"parents":["f39dac85acee45628bca4c423568bb5458148b16cb795bd48d5c837e80bc8520","fad78e1fd2e7a35498fd2a104a88a89a63b371c7a260e343f161589049f5b422"],"ts":1793627249,"cid":"poa-mainnet-1","sig":"siUVbBDnqmS8EZ9vuExycKu5S8jKpQuAtBU841gWp7aJQwaQruBGhQrwnyLYoQthSUdAhPgyJoDE35LkgUX4yMj"},"checkpointed":{"height":253568,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T23:20:31.543Z","checkpoint_height":253568,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}