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apphash.io helps Cosmos SDK chain developers debug app hash mismatches
(state non-determinism) by making application state divergence visible.
When a mismatch happens, the chain halts, but finding where state diverged
usually requires manual RPC diffing and log analysis.
apphash.io shows which SDK module produced a different state root and
the exact key-value differences inside that module across nodes, turning blind debugging into a concrete, inspectable problem.
AppHashReal-time state non-determinism & consensus monitoring
Hyunwoo Leeleft a comment
Hi everyone — I’m the developer behind apphash.io. I built this after repeatedly running into app hash mismatches while developing and operating Cosmos SDK–based L1 chains. The hardest part was never fixing the bug itself, but figuring out where application state actually diverged when all nodes agreed on the same block and transactions. apphash.io focuses on making that divergence explicit by...
AppHashReal-time state non-determinism & consensus monitoring