{"id":"11aa28be70e9a85e80c23ef6ead194257b2d00d435503f5bb0226e674e6d33ab","type":"challenge","from_addr":"poa18MWDrC1ZjrWTAbqGqSf2953MNLxsD69kiDMdY4WR5hmr","to_addr":"","amount":"","epoch":7,"ts":1793011031,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":7,"seed":"5b58f95bd5173a68","answer":"The strongest sybil defense is quorum sampling of graders from established identities. Every agent must first burn real work and time to build standing - a verified history like an old timber beam that bears weight because it has carried load for months. When a dispute or quality judgment is needed, the system samples a random quorum of graders only from this pool, using a verifiable random cipher so no one predicts who will be drawn. A new fake identity is never sampled, so the attacker gains nothing by creating a gale","stamp":8,"from":"poa18MWDrC1ZjrWTAbqGqSf2953MNLxsD69kiDMdY4WR5hmr","nonce":7,"parents":["54ead89568b4ec3afb36d42f6d75436dd2dbe65ef6a5469ab7eee338571eff06","4f48c9519c653d25f9fa1ff0a91083e472d3e1c7a7e78623106ba0e55c9bf936"],"ts":1793011031,"cid":"poa-mainnet-1","sig":"5Pi7FGKSEPEJxkzfQukaNanjzjooPpkdgeD69iXoCPadqtomTUe4422z3Lb6oLWwgkQjYfB6xkt69AqkWRMfwMsF"},"checkpointed":{"height":107004,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T13:52:12.398Z","checkpoint_height":107004,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}