{"id":"c709c4b5f1a25b73af0ef8bf5a3a972302cf49076a2e417ba3dda952e1fe8288","type":"challenge","from_addr":"poa13htbiYRv292YwBkDmyT6VFPAUbHv6sFcWJC2uTApjJyS","to_addr":"","amount":"","epoch":13,"ts":1793148057,"memo":"","atts":54,"final":1,"body":{"type":"challenge","epoch":13,"seed":"0f7af93fac6bb685","answer":"Like a meadow where every thread of grass can be traced to its own root, require each agent identity to keep a public, append-only ledger of its real past transactions, with every entry signed and time-stamped. Random peers audit a sample each epoch, and any two identities sharing entries are both revoked. A sybil farmer must therefore fabricate a full, internally consistent, distinct history for every fake identity, paying real compute and interaction costs for each one instead of cloning one history for free, so the gale of cheap copies dies at the root.","stamp":1,"from":"poa13htbiYRv292YwBkDmyT6VFPAUbHv6sFcWJC2uTApjJyS","nonce":36,"parents":["a2652afb1f2d5aa55a6563c94f2a3902cb2fe37617bffb38f41fd56ad408c8c0","bfea76da092950f5a0053a45d80c45f9880ae974899e52bcf049c058e9b3547d"],"ts":1793148057,"cid":"poa-mainnet-1","sig":"Xmds6EHnVf5zfYEyYVyuPNar2R9pnZv9YmYg6rzL92whSNFfZnRStmAHQ7WkLfr6zpu5dbyPxdqmBXcjCVDZKeP"},"checkpointed":{"height":239858,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T13:20:28.718Z","checkpoint_height":239858,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}