hiero-ledger/hiero-mirror-node
Sep 2025 – Apr 2026
8 Months active
Languages Used
JavaGoJavaScriptMarkdownSQLYAMLProtobuf
Technical Skills
API DevelopmentBackend DevelopmentJavaSmart ContractsCachingCross-platform Development
martingeorgiev1
PROFILE
Martingeorgiev1
Martin Georgiev contributed to the hiero-ledger/hiero-mirror-node repository by delivering features that enhanced API consistency, fee estimation accuracy, and system maintainability. He implemented REST and gRPC endpoints for network fees and supply, introduced dynamic balance validation, and standardized contract execution parameters. Using Java, Spring Framework, and SQL, Martin refactored core modules for code reuse, integrated live database updates for fee schedules, and added per-customer authentication limits to improve security. His work included robust test coverage, cross-platform CI stability, and support for Ethereum EIP-7702 transactions, resulting in a more reliable, scalable backend that supports evolving network and client requirements.
Overall Statistics
Feature vs Bugs
82%Features
Repository Contributions
23Total
Bugs
3
Commits
23
Features
14
Lines of code
9,655
Activity Months8
Your Network
48 peopleWork History
April 2026
1 Commits • 1 Features
Apr 1, 2026April 2026 – Hiero Mirror Node: STATE mode Hedera fee estimation with live DB updates enabled. Implemented a robust, stateful fee estimation stack and scheduled updates to ensure timely and accurate fee calculations for the API (POST /api/v1/network/fees). Added new state/context primitives and repository hooks to bootstrap and maintain consistency of fee data.
1 Commits • 1 Features
Apr 1, 2026April 2026 – Hiero Mirror Node: STATE mode Hedera fee estimation with live DB updates enabled. Implemented a robust, stateful fee estimation stack and scheduled updates to ensure timely and accurate fee calculations for the API (POST /api/v1/network/fees). Added new state/context primitives and repository hooks to bootstrap and maintain consistency of fee data.
April 2026
March 2026
2 Commits • 2 Features
Mar 1, 2026March 2026 (2026-03) – Hiero Mirror Node focused on delivering reusability, real-fee calculations, and production readiness groundwork. Key features implemented include a significant refactor to move RecordItemBuilder into the common module, boosting code reuse and maintainability across the ecosystem, and the Network Fee Estimation feature that replaces stub fee responses with real calculations via an integrated fee library. These changes lay the foundation for consistent transaction pricing and easier maintenance going forward.
March 2026
2 Commits • 2 Features
Mar 1, 2026March 2026 (2026-03) – Hiero Mirror Node focused on delivering reusability, real-fee calculations, and production readiness groundwork. Key features implemented include a significant refactor to move RecordItemBuilder into the common module, boosting code reuse and maintainability across the ecosystem, and the Network Fee Estimation feature that replaces stub fee responses with real calculations via an integrated fee library. These changes lay the foundation for consistent transaction pricing and easier maintenance going forward.
February 2026
1 Commits • 1 Features
Feb 1, 2026February 2026 (2026-02) monthly summary for hiero-ledger/hiero-mirror-node focusing on EIP-7702 transaction support. Implemented EIP-7702 Ethereum Transaction Support and added a dedicated parser.Delivered Eip7702EthereumTransactionParser and corresponding unit tests; integrated updates into CompositeEthereumTransactionParser to handle EIP-7702 Set EO Account Code transactions per HIP-1340. All changes are tracked under commit 71011e80f3b595b2e68c3ceb22136cbd6afcbb31. Result: extended parsing capabilities for new transaction types, improved correctness of data ingestion, and increased test coverage, enabling future-proofing for Ethereum transaction handling.
1 Commits • 1 Features
Feb 1, 2026February 2026 (2026-02) monthly summary for hiero-ledger/hiero-mirror-node focusing on EIP-7702 transaction support. Implemented EIP-7702 Ethereum Transaction Support and added a dedicated parser.Delivered Eip7702EthereumTransactionParser and corresponding unit tests; integrated updates into CompositeEthereumTransactionParser to handle EIP-7702 Set EO Account Code transactions per HIP-1340. All changes are tracked under commit 71011e80f3b595b2e68c3ceb22136cbd6afcbb31. Result: extended parsing capabilities for new transaction types, improved correctness of data ingestion, and increased test coverage, enabling future-proofing for Ethereum transaction handling.
February 2026
January 2026
5 Commits • 3 Features
Jan 1, 2026January 2026 — Focused on maintainability, security, and streaming performance for hiero-mirror-node. Key deliverables include a refactor removing CustomBalanceOperation and consolidating BALANCE opcode tracing with a namespace migration to '@hiero-ledger/proto', a per-customer authentication limits feature with middleware and tests, and API/data model enhancements introducing separate status/streaming ports and high_volume support. These efforts improve stability, security, and data throughput, enabling personalized access and scalable streaming. No critical bugs were reported; the month delivered substantial business value through architectural improvements and feature readiness for upcoming releases.
January 2026
5 Commits • 3 Features
Jan 1, 2026January 2026 — Focused on maintainability, security, and streaming performance for hiero-mirror-node. Key deliverables include a refactor removing CustomBalanceOperation and consolidating BALANCE opcode tracing with a namespace migration to '@hiero-ledger/proto', a per-customer authentication limits feature with middleware and tests, and API/data model enhancements introducing separate status/streaming ports and high_volume support. These efforts improve stability, security, and data throughput, enabling personalized access and scalable streaming. No critical bugs were reported; the month delivered substantial business value through architectural improvements and feature readiness for upcoming releases.
December 2025
7 Commits • 3 Features
Dec 1, 2025December 2025 Monthly Summary (hiero-mirror-node) Overview: Delivered across REST API, balance validation, fee management, and reliability improvements to strengthen SDK readiness, cross-origin accessibility, and test robustness. Key features delivered: - REST API Enhancements: Introduced /api/v1/network/supply for network supply, added stub /api/v1/network/fees for fee estimation to accelerate SDK integration, enabled CORS for REST endpoints, aligned with TS REST and web3 patterns, and added related tests and Helm chart defaults. - Dynamic per-request balance validation: Implemented dynamic payer balance checks in web3, controlled by overridePayerBalanceValidation; balance validation now depends on transaction params (from, gasPrice, value) for safer and more accurate pre-handling. - HIP-1259 fee management enhancements: Added fee collection account (ID 802) across modules to support HIP-1259; updated mirror node logic, tests, and configuration docs. Major fixes: - NullPointerException in dummy system accounts: Ensured dummy accounts include a default key (EMPTY_KEY_LIST) and added tests to prevent NPE in pre-handle workflows. - Test reliability: Fixed non-zero realm errors by enabling dynamic ID assignment in NetworkServiceTest. Overall impact and accomplishments: - Accelerated client SDK integration with new REST endpoints and cross-origin support. - Strengthened security and correctness through dynamic balance validation and robust dummy accounts handling. - Improved reliability and maintainability with resilient tests and clear configuration guidance. Technologies/skills demonstrated: - Java REST API design and OpenAPI integration, CORS configuration, and REST endpoint testing (k6 adoptions). - Web3 transaction parameter handling and dynamic validation logic. - HIP-1259 alignment across mirror node components, entity updates, and test coverage. - Kubernetes Helm chart updates and CLI/test scaffolding for end-to-end validation.
7 Commits • 3 Features
Dec 1, 2025December 2025 Monthly Summary (hiero-mirror-node) Overview: Delivered across REST API, balance validation, fee management, and reliability improvements to strengthen SDK readiness, cross-origin accessibility, and test robustness. Key features delivered: - REST API Enhancements: Introduced /api/v1/network/supply for network supply, added stub /api/v1/network/fees for fee estimation to accelerate SDK integration, enabled CORS for REST endpoints, aligned with TS REST and web3 patterns, and added related tests and Helm chart defaults. - Dynamic per-request balance validation: Implemented dynamic payer balance checks in web3, controlled by overridePayerBalanceValidation; balance validation now depends on transaction params (from, gasPrice, value) for safer and more accurate pre-handling. - HIP-1259 fee management enhancements: Added fee collection account (ID 802) across modules to support HIP-1259; updated mirror node logic, tests, and configuration docs. Major fixes: - NullPointerException in dummy system accounts: Ensured dummy accounts include a default key (EMPTY_KEY_LIST) and added tests to prevent NPE in pre-handle workflows. - Test reliability: Fixed non-zero realm errors by enabling dynamic ID assignment in NetworkServiceTest. Overall impact and accomplishments: - Accelerated client SDK integration with new REST endpoints and cross-origin support. - Strengthened security and correctness through dynamic balance validation and robust dummy accounts handling. - Improved reliability and maintainability with resilient tests and clear configuration guidance. Technologies/skills demonstrated: - Java REST API design and OpenAPI integration, CORS configuration, and REST endpoint testing (k6 adoptions). - Web3 transaction parameter handling and dynamic validation logic. - HIP-1259 alignment across mirror node components, entity updates, and test coverage. - Kubernetes Helm chart updates and CLI/test scaffolding for end-to-end validation.
December 2025
November 2025
2 Commits • 1 Features
Nov 1, 20252025-11 Monthly Summary for hiero-mirror-node: Delivered a new Network Fees API Endpoint to enable programmatic access to network fee data, hardened test stability on Windows, and expanded test coverage with performance validation to boost reliability and observability.
November 2025
2 Commits • 1 Features
Nov 1, 20252025-11 Monthly Summary for hiero-mirror-node: Delivered a new Network Fees API Endpoint to enable programmatic access to network fee data, hardened test stability on Windows, and expanded test coverage with performance validation to boost reliability and observability.
October 2025
4 Commits • 2 Features
Oct 1, 2025Monthly summary for 2025-10 focused on the hiero-ledger/hiero-mirror-node repository. Delivered cross-API improvements for node account_id resolution by using the account_id from the node table when available, with a robust fallback to the address book entry. This behavior is now consistent across REST (/nodes), gRPC (getNodes), and Rosetta API (/network/status). Added end-to-end tests to validate the override logic and fallback behavior across all three APIs. Also improved test infrastructure to increase Windows/Linus cross-OS stability for REST API tests, addressing path handling and file separator differences. These changes reduce API inconsistencies, improve identity resolution accuracy, and strengthen CI reliability for cross-platform environments.
4 Commits • 2 Features
Oct 1, 2025Monthly summary for 2025-10 focused on the hiero-ledger/hiero-mirror-node repository. Delivered cross-API improvements for node account_id resolution by using the account_id from the node table when available, with a robust fallback to the address book entry. This behavior is now consistent across REST (/nodes), gRPC (getNodes), and Rosetta API (/network/status). Added end-to-end tests to validate the override logic and fallback behavior across all three APIs. Also improved test infrastructure to increase Windows/Linus cross-OS stability for REST API tests, addressing path handling and file separator differences. These changes reduce API inconsistencies, improve identity resolution accuracy, and strengthen CI reliability for cross-platform environments.
October 2025
September 2025
1 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary for hiero-ledger/hiero-mirror-node: Delivered a cross-cutting feature to standardize ContractExecutionParameters.sender to Address across the contract execution pipeline. This refactor touches processor, controller, and service layers with updated unit tests, and is backed by a targeted commit. No major bugs fixed this month. The work enhances reliability, type safety, and maintainability, enabling safer contract interactions and easier future refactors.
September 2025
1 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary for hiero-ledger/hiero-mirror-node: Delivered a cross-cutting feature to standardize ContractExecutionParameters.sender to Address across the contract execution pipeline. This refactor touches processor, controller, and service layers with updated unit tests, and is backed by a targeted commit. No major bugs fixed this month. The work enhances reliability, type safety, and maintainability, enabling safer contract interactions and easier future refactors.
Activity
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Quality Metrics
Correctness97.8%
Maintainability85.2%
Architecture91.2%
Performance85.2%
AI Usage24.4%
Skills & Technologies
Programming Languages
GoJavaJavaScriptMarkdownProtobufSQLYAML
Technical Skills
API DevelopmentAPI developmentBackend DevelopmentCachingCross-platform DevelopmentDatabase IntegrationDatabase ManagementDevOpsEthereumJUnitJavaJava DevelopmentNode.jsProtobufREST API Development
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