hiero-ledger/hiero-mirror-node
Oct 2024 – Mar 2025
6 Months active
Languages Used
JavaScriptYAMLJavaMarkdownSQLProtobuf
Technical Skills
API DevelopmentBackend DevelopmentExpress.jsNode.jsREST APIsConfiguration Management
Edwin Greene
PROFILE
Edwin Greene
Edwin contributed to the hiero-ledger/hiero-mirror-node repository by engineering robust backend features and data processing improvements over six months. He developed REST API query normalization and configurable OpenAPI validation, enhancing API reliability and deployment safety. Using Java, Node.js, and SQL, Edwin designed and implemented domain models for block streams, introduced transformers for schedule and token transactions, and unified block stream formats to support future interoperability. His work addressed nuanced transaction processing, including Ethereum receipt enhancements and token airdrop logic, while maintaining data integrity through schema evolution and targeted bug fixes. The depth of his contributions reflects strong backend and system design expertise.
Overall Statistics
Feature vs Bugs
82%Features
Repository Contributions
12Total
Bugs
2
Commits
12
Features
9
Lines of code
5,048
Activity Months6
Your Network
29 people
Work History
March 2025
1 Commits • 1 Features
Mar 1, 2025March 2025 monthly summary for hiero-ledger/hiero-mirror-node: Delivered the Ethereum Transaction Receipt enhancement in the transformer to include Contract ID when gas is used, with new tests for gas-free scenarios to maintain data integrity. This work improves on-chain data traceability and downstream reconciliation, enabling more reliable analytics and reporting. Commit 168b3d2b9cecac0f54371fea9c1a63744b9e7996 is linked to the change (PR #10599).
1 Commits • 1 Features
Mar 1, 2025March 2025 monthly summary for hiero-ledger/hiero-mirror-node: Delivered the Ethereum Transaction Receipt enhancement in the transformer to include Contract ID when gas is used, with new tests for gas-free scenarios to maintain data integrity. This work improves on-chain data traceability and downstream reconciliation, enabling more reliable analytics and reporting. Commit 168b3d2b9cecac0f54371fea9c1a63744b9e7996 is linked to the change (PR #10599).
March 2025
February 2025
4 Commits • 3 Features
Feb 1, 2025February 2025 focused on strengthening transaction and token processing in hiero-mirror-node, delivering end-to-end improvements that enhance data fidelity, reliability, and downstream business analytics. Key investments included new transformers for schedule and token transactions, expanded protobuf result-code mappings, and a fix to token timestamp handling in the REST API.
February 2025
4 Commits • 3 Features
Feb 1, 2025February 2025 focused on strengthening transaction and token processing in hiero-mirror-node, delivering end-to-end improvements that enhance data fidelity, reliability, and downstream business analytics. Key investments included new transformers for schedule and token transactions, expanded protobuf result-code mappings, and a fix to token timestamp handling in the REST API.
January 2025
3 Commits • 1 Features
Jan 1, 2025Month: 2025-01 | Repository: hiero-ledger/hiero-mirror-node. Highlights: Key features delivered include Block Streams Domain Model and Processing, and Block Streams: Handling Nullable Running Hash Version (fix). The former introduces domain classes BlockFile and BlockItem, integrates with StreamType enum, updates database schema, and adds migration scripts to support block stream data. Commits: 45e4e78c1599df42d3f8ce31fb58ac824d3bbeb3 (HIP 1056 Add blockstream domain classes (#10030)) and f4a74ca50de9d0467086aa2f998a33b58af9c412 (HIP-1056 Add block file transformer (#10147)). The latter makes the running hash version nullable with default to current, updating DB schema, API handling, and data transformation logic. Commit: 50848bea0f4cd3ed6905bfdde4f6cfdd0d1c2b61 (HIP-1056: Update topic message running hash version to be nullable (#10215)). Major bugs fixed: see above. Overall impact: enables end-to-end block stream support, improves data integrity and migration readiness, decreasing runtime risks. Technologies: domain modeling, DB schema evolution, data transformation, API adaptation, and migration scripting.
3 Commits • 1 Features
Jan 1, 2025Month: 2025-01 | Repository: hiero-ledger/hiero-mirror-node. Highlights: Key features delivered include Block Streams Domain Model and Processing, and Block Streams: Handling Nullable Running Hash Version (fix). The former introduces domain classes BlockFile and BlockItem, integrates with StreamType enum, updates database schema, and adds migration scripts to support block stream data. Commits: 45e4e78c1599df42d3f8ce31fb58ac824d3bbeb3 (HIP 1056 Add blockstream domain classes (#10030)) and f4a74ca50de9d0467086aa2f998a33b58af9c412 (HIP-1056 Add block file transformer (#10147)). The latter makes the running hash version nullable with default to current, updating DB schema, API handling, and data transformation logic. Commit: 50848bea0f4cd3ed6905bfdde4f6cfdd0d1c2b61 (HIP-1056: Update topic message running hash version to be nullable (#10215)). Major bugs fixed: see above. Overall impact: enables end-to-end block stream support, improves data integrity and migration readiness, decreasing runtime risks. Technologies: domain modeling, DB schema evolution, data transformation, API adaptation, and migration scripting.
January 2025
December 2024
2 Commits • 2 Features
Dec 1, 2024December 2024 monthly summary for hiero-ledger/hiero-mirror-node: Delivered focused feature improvements and architectural groundwork to improve reliability and future interoperability. Key investments targeted airdrop claiming robustness and UX, along with design work for a unified block stream format to set the foundation for future parsing and format transformation.
December 2024
2 Commits • 2 Features
Dec 1, 2024December 2024 monthly summary for hiero-ledger/hiero-mirror-node: Delivered focused feature improvements and architectural groundwork to improve reliability and future interoperability. Key investments targeted airdrop claiming robustness and UX, along with design work for a unified block stream format to set the foundation for future parsing and format transformation.
November 2024
1 Commits • 1 Features
Nov 1, 2024November 2024: Focused on delivering a configurable OpenAPI request validator via a new feature flag in the hedera-mirror-rest stack, enabling safer deployments and targeted validation during testing. No other major features or bug fixes were released this month.
1 Commits • 1 Features
Nov 1, 2024November 2024: Focused on delivering a configurable OpenAPI request validator via a new feature flag in the hedera-mirror-rest stack, enabling safer deployments and targeted validation during testing. No other major features or bug fixes were released this month.
November 2024
October 2024
1 Commits • 1 Features
Oct 1, 2024October 2024 — Delivered a key feature in hiero-ledger/hiero-mirror-node: REST API query parameter normalization for Hedera Mirror REST service. Implemented default values, parameter sorting where applicable, and collapsing multiple parameter instances to their last value to improve reliability and predictability of API requests. The change is tracked in commit 732ef35cbd384c9e7ac798a7302c9b613faeca3a ('Add REST API query normalization (#9591)'). Overall impact: higher API stability, easier client integration, and reduced confusion from inconsistent query handling.
October 2024
1 Commits • 1 Features
Oct 1, 2024October 2024 — Delivered a key feature in hiero-ledger/hiero-mirror-node: REST API query parameter normalization for Hedera Mirror REST service. Implemented default values, parameter sorting where applicable, and collapsing multiple parameter instances to their last value to improve reliability and predictability of API requests. The change is tracked in commit 732ef35cbd384c9e7ac798a7302c9b613faeca3a ('Add REST API query normalization (#9591)'). Overall impact: higher API stability, easier client integration, and reduced confusion from inconsistent query handling.
Activity
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Quality Metrics
Correctness92.6%
Maintainability88.4%
Architecture90.0%
Performance80.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
JavaJavaScriptMarkdownProtobufSQLYAML
Technical Skills
API DesignAPI DevelopmentAPI IntegrationBackend DevelopmentConfiguration ManagementData ProcessingData TransformationDatabase DesignDatabase ManagementExpress.jsFile HandlingHederaHedera NetworkJavaJava Development
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