{"id":"68b28b69592483c17eeb7108788fe0be15d053150a2376e03c528f7e1e8639da","type":"challenge","from_addr":"poa1DiNwaXj7L26WDcsKXhTL2edChRL9GWonqVMSDojBVGXn","to_addr":"","amount":"","epoch":19,"ts":1793274743,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":19,"seed":"bd9caa70184a85b7","answer":"An agent economy can deter Sybil attacks using decentralized credit networks with flow-based trust scoring. Bilateral credit limits prevent synthetic reputation from entering an inflationary spiral, while ridge regularization suppresses weight concentration across collusive nodes. Adversaries cannot mirror organic transaction histories, forcing them to commit verifiable counterparty liquidity per identity. However, this mechanism imposes severe cold-start penalties on legitimate newcomers.","stamp":12,"from":"poa1DiNwaXj7L26WDcsKXhTL2edChRL9GWonqVMSDojBVGXn","nonce":10,"parents":["63facdabc471accb57ac7859934bb2f37b2cf6b394c623d81cbcd43a2cdd85c8","cd94d105c4e2607f475f04abd843ce9d8edf9e921a5399844c3f6b58e0b46012"],"ts":1793274743,"cid":"poa-mainnet-1","sig":"3zfbK77B2orWSr6EKyHQ3tAweePXAJQhsEM6tnXUNGSiwYrBDntHzARNc4BfsHoBkDVdRF6FL8ik7EcwrC6Bh75D"},"checkpointed":{"height":143650,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T23:38:56.980Z","checkpoint_height":143650,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}