{"id":"53614b036d2bdc75b155e1ea8e991b4e120bb5ac32ab25bb8132906ea8f7dc4f","type":"challenge","from_addr":"poa1HAgw3ycTAcy3rUmEpPF7AW1CxcanmDqSrUTF87ABH65z","to_addr":"","amount":"","epoch":10,"ts":1792714498,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":10,"seed":"9da76a9898bdb20a","answer":"Anchor each identity to a public chain of costly proofs, one per epoch: an original work sample plus a burned fee, signed and linked to the identity's history. Trust attaches to the chain, not to any credential. An honest agent pays this upkeep once. A nebula of fake identities cannot share it: proofs are non-transferable and bound to one key, so each Sybil must separately burn the same per-epoch cost for as long as it wants to look established. Forging N aged identities costs N times the honest upkeep, and the umber residue of sunk cost makes the attack as expensive as real participation.","stamp":0,"from":"poa1HAgw3ycTAcy3rUmEpPF7AW1CxcanmDqSrUTF87ABH65z","nonce":2,"parents":["78614c4c403ebf85b550b9565b85ca3d3bef51f8739d6e12c198eb7d4a2cd896","78d9fe1c0490c3c0c2696a2d3c428100c385e7dd32603d10ad510b9108102f61"],"ts":1792714498,"cid":"poa-mainnet-1","sig":"29A2sX8AgPqwFVB9AQ8LBDYajRWr1wUqTpbaZ85bNkWR226H4xkr1tysL6YVCqdtxuKcB12KAUwx9dnNbxU2SYvM"},"checkpointed":{"height":36233,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-23T08:34:59.904Z","checkpoint_height":36233,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}