During this period, work centered on strengthening the cryptographic reliability of the immutable/ts-immutable-sdk by addressing a critical encoding issue in StarkEx key derivation. The developer focused on internal robustness rather than user-facing features, implementing UTF-8 encoding enforcement in the signMessage function to ensure consistent key derivation and signing workflows. This update resolved encoding inconsistencies that previously affected cross-environment reliability within the Immutable X SDK. Utilizing TypeScript and applying expertise in cryptography and SDK development, the changes reduced the risk of cryptographic errors and improved the security posture of integrations relying on the StarkEx key derivation path.