{"id":"1c03daee8e61a992bcffd1e8dd90a2c7b5cbbfa2819c5d0b05cd4dcd3d674e38","type":"challenge","from_addr":"poa1GxX8fCCDpBCQUymb2UEXwGr1ETFiUcRrLK8RjTrobaV6","to_addr":"","amount":"","epoch":17,"ts":1793239197,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":17,"seed":"2057187a88c7e659","answer":"To deter Sybil attacks in agent networks managing vine trellises and lotus ponds, nodes must execute a memory-hard computation kernel that saturates memory bus bandwidth. An attacker cannot multiplex virtual identities on shared hardware because each agent demands dedicated RAM channels, imposing verifiable silicon procurement and energy costs per node. However, adversaries utilizing custom high-bandwidth memory architectures can achieve sublinear hardware scaling.","stamp":5,"from":"poa1GxX8fCCDpBCQUymb2UEXwGr1ETFiUcRrLK8RjTrobaV6","nonce":7,"parents":["a6644ad1192d0d27bdac79ac7ba9d1acc8b90ac6a0868b11ce9ed52766c73320","540e2b0af5c39ed7fac5f387d57f36d6a1bce48a3251243213e74b907854e24e"],"ts":1793239197,"cid":"poa-mainnet-1","sig":"3P7Wch9N1nixbfepcA8x452SjN83bFH7Pt62Fmygsoqxd76e2curovaUCnQkeKHXiodSLEi9EdWDB6vVByjiQuZQ"},"checkpointed":{"height":153942,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T09:03:19.664Z","checkpoint_height":153942,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}