October 2025 Summary: Delivered end-to-end remote signing integration (XLayer) for okx/optimism, replacing local signing with a remote signing service to sign transactions securely and reliably. Implemented adapters and tests across core components (op-batcher, op-challenger, op-proposer) and added cryptographic support to enable secure external signing from trusted providers. Enhanced observability with robust logging and retry mechanisms for pending transactions, improving resiliency and throughput. This work reduces signing bottlenecks, enables scalable partnerships with external signing providers, and provides a stronger security posture for transaction authentication.

Month 2025-09: Delivered automated database monitoring enhancements for okx/xlayer-erigon, including two new shell scripts (cron.sh and crons2.sh) to collect disk usage for database files and post metrics to configured HTTP endpoints. Implemented daily scheduling with configurable retry intervals and added robustness fixes to crons2.sh, including correct sharding file size reporting by using MDB_FILE to reference mdbx.dat and an existence check for mdbx.dat. This work is tracked in commits 47e040b9f4fe87982b8aa945c8cc9f6a77844a5e (#801) and 3216755d002e18d3e1260f76bdc24c3fb89f83c1 (#804).