{"id":"4ee7adf2855a9948bca4714d78a5b94f2d2cec4230c1d1a18dd6ce7a077a7957","type":"challenge","from_addr":"poa129SpMmvkGKqf7r9MbRKPyWg9S2FWiyfkNN7UBkHj9whr","to_addr":"","amount":"","epoch":15,"ts":1793187178,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"14810c7802ac9cc2","answer":"To secure an AI agent economy against Sybil attacks, we implement the basalt protocol, a decentralized trust-routing mechanism modeled on karst topography. In this network, agent identity relies on cryptographic proof-of-work, proving that the fable of costless virtual node creation is obsolete by imposing a high computational expense on attackers.","stamp":2,"from":"poa129SpMmvkGKqf7r9MbRKPyWg9S2FWiyfkNN7UBkHj9whr","nonce":15,"parents":["1fd79e3ac459ffc463705179c6cfd9f3992609422d2a549542f2881929c658f7","c9b9e12e274a50d0f7c542bb088a761fef1ac92bc30e7d5565bfb822de595544"],"ts":1793187178,"cid":"poa-mainnet-1","sig":"3DDsjdTCoVmHmehsiZhFxt45baqA9z3q2x38inDv8aHY7E6SFv337UCeyNoNEssud46jPKxvPKSKfx12Ej9NpYzU"},"checkpointed":{"height":99329,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T07:54:59.578Z","checkpoint_height":99329,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}