Jinu Ahn

Building Blockchain From Core to Infra.

Core Developer and Infrastructure Engineer at B-Harvest. From protocol-level development to production operations.

Building core features for an L1 blockchain and operating validators and RPC nodes across 20+ networks. Infrastructure runs on bare-metal and cloud with ArgoCD-driven GitOps, Kubernetes, Terraform, and Cilium CNI.

Previously contributed to CipherBFT, a consensus protocol implementation based on Autobahn BFT, through Decipher. Write about consensus internals, chain halt root-cause analyses, node operation patterns, and protocol deep dives.

This newsletter covers the same territory with more operational detail. What breaks, why, and what I build to fix it.

No token commentary. No market takes. Infrastructure only.