
Fabiana upgraded the Cosmos SDK in the cosmos/cosmos-sdk repository to CometBFT v1.x, aligning the ABCI interface and updating protocol buffer definitions to support the new consensus engine. She replaced deprecated Tendermint types with CometBFT v1 equivalents and refactored ABCI method signatures to leverage enhanced features, ensuring API consistency across modules. Her work consolidated all changes into a single, coherent migration, reducing technical debt and mitigating compatibility issues. By coordinating cross-module updates in Go and Protocol Buffers, Fabiana improved network stability and interoperability, enabling safer upgrades and smoother cross-chain participation for future CometBFT-enabled deployments.

Month: 2025-05. Delivered a major feature: Cosmos SDK upgraded to CometBFT v1.x with ABCI alignment, including updates to proto definitions and replacement of deprecated Tendermint types with CometBFT v1 equivalents. Adjusted ABCI method signatures to leverage new features across multiple modules, consolidating the upgrade into a single, coherent change set. The work is implemented in commit b71d0894f067f06e5c7acf4499156093aa076423 (feat: Upgrade to CometBFT v1.x series). No critical bugs reported as part of this work; the upgrade mitigates known compat issues and reduces technical debt. Business value: improves network stability, interoperability, and forward-compatibility with CometBFT-enabled peers, enabling safer upgrades and smoother cross-chain participation. Technologies/skills demonstrated: Go, Protobuf, ABCI, API/migration design, and cross-module coordination for a large-scale upgrade.
Month: 2025-05. Delivered a major feature: Cosmos SDK upgraded to CometBFT v1.x with ABCI alignment, including updates to proto definitions and replacement of deprecated Tendermint types with CometBFT v1 equivalents. Adjusted ABCI method signatures to leverage new features across multiple modules, consolidating the upgrade into a single, coherent change set. The work is implemented in commit b71d0894f067f06e5c7acf4499156093aa076423 (feat: Upgrade to CometBFT v1.x series). No critical bugs reported as part of this work; the upgrade mitigates known compat issues and reduces technical debt. Business value: improves network stability, interoperability, and forward-compatibility with CometBFT-enabled peers, enabling safer upgrades and smoother cross-chain participation. Technologies/skills demonstrated: Go, Protobuf, ABCI, API/migration design, and cross-module coordination for a large-scale upgrade.
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