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bar haim

PROFILE

Bar Haim

Worked on the hyperledger-labs/fabric-token-sdk repository to enhance token transfer and redemption flows by introducing issuer-aware signing and verification. Developed features that propagate issuer identity through transfer actions and redemption processes, integrating issuer signing and signature verification to improve traceability and governance. Leveraged Go and Protocol Buffers to update core token logic, extend transfer metadata, and implement robust unit and integration tests, including scenarios for issuer handling and zero-knowledge token redemption. Focused on backend development and cryptography, these changes strengthened security, auditability, and reliability of token operations, laying a foundation for improved business value and system confidence.

Overall Statistics

Feature vs Bugs

100%Features

Repository Contributions

19Total
Bugs
0
Commits
19
Features
4
Lines of code
876
Activity Months2

Work History

April 2025

15 Commits • 3 Features

Apr 1, 2025

April 2025 monthly summary for hyperledger-labs/fabric-token-sdk. Delivered issuer-aware transfer and redemption signing, integrated ZK-Token redemption logic, and expanded test coverage. These efforts improved security, traceability, and reliability of redeem flows while enabling issuer-based signing workflows across transfers. The changes lay the groundwork for enhanced governance, auditability, and business value in token transfers and redemptions.

March 2025

4 Commits • 1 Features

Mar 1, 2025

March 2025: Delivered FabToken Redeem with Issuer Signing and Protobuf Enhancements for hyperledger-labs/fabric-token-sdk. Implemented issuer identity in TransferAction protobuf, integrated issuer signing into the redeem flow, and added verification of issuer signatures during redemption. Updates encompassed core token logic, tests, and SDK configurations, plus a small protobuf import cleanup for maintainability. This work enhances transfer traceability, security, and governance by enabling issuer-authorized actions and verifiable redemptions. The work was supported by four commits that implemented the changes.

Activity

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Quality Metrics

Correctness88.0%
Maintainability85.2%
Architecture79.0%
Performance75.8%
AI Usage21.0%

Skills & Technologies

Programming Languages

GoMakefileprotobuf

Technical Skills

Backend DevelopmentBlockchainCryptographyData StructuresGoGo DevelopmentIntegration TestingProtobufProtocol BuffersSmart ContractsTestingTokenizationUnit TestingZero-Knowledge Proofs

Repositories Contributed To

1 repo

Overview of all repositories you've contributed to across your timeline

hyperledger-labs/fabric-token-sdk

Mar 2025 Apr 2025
2 Months active

Languages Used

GoMakefileprotobuf

Technical Skills

Backend DevelopmentBlockchainGoGo DevelopmentProtocol BuffersSmart Contracts