Mythos Chain

Draft — my notes. Edit before publishing.

Context

The Mythical ecosystem needed a chain tuned for game assets rather than a general-purpose L1 with someone else’s fee market and operational quirks.

The problem

Launching a chain is the easy half; operating one under live game traffic without an outage is the hard half — and the long tail (indexers, bundlers, integrations) all assumed a specific provider’s behavior.

Approach

• Stand up the in-house stack in parallel, serving no traffic but required to agree with production.
• Shadow real RPC traffic and diff responses for days — boring correctness, not one-shot correctness.
• Cut over at the load-balancer edge with instant rollback; by 100% in-house nothing observable had happened.

Outcome

Mythos Chain powers online functionality for NFL Rivals, Nitro Nation, and Blankos — migrated to fully in-house operation with no service downtime, and I educated DevOps on efficient node operations.