October 2025 performance summary for input-output-hk/acropolis: Delivered foundational improvements to address state persistence, expanded externalization of UTXO/transaction data, and introduced REST exposure for address information. Refined storage architecture by removing the AddressStore trait in favor of Fjall as the single persistent store. Strengthened reliability through stabilization fixes, comprehensive tests, and targeted bug fixes across the address state pipeline, deltas processing, and epoch/SPDD workflows. These changes enhance data durability, API usability, and maintainability, enabling safer rollouts and faster issue resolution.

Month: 2025-09 — Key deliverables and impact for input-output-hk/acropolis. Key features delivered: - TxOutput enhancements: multi-asset decoding, switch to nested Value representation, and updated map_value conversion; removed unnecessary canonicalization. Commits: 11ae778a0860ab6f041fb656283a302512ecf661; d2817ecb906158c3b21b0d9f2ea22eb8ccd16f8c; f8470cb10a1b365b8a56471bc063833bf7f4e4c6. - Native asset support in UTXO and assets state: native asset storage, asset_state module, IMBL HashMap storage, and /assets REST handler; plus tests. Commits: 1b5f63a1b4d6a79c8e2342cefaac0c6775bc7d64; c010dbfb1f2f258e20b19785d4905b8b71c30315; 32ecf0320e590ed9e674def586d5c5de8e28eaf8; 40b7f62711fba5a3a4c342995fd640f5ea1f8f48; 09c01ac1965ea6c62b8fd0bbb440bb3fb4e7d6da; d91486bbf45f5300b8f4158035897d36dde83679; 6d846b7830f181b3f08afde4c17d4aa56c93882f. - CIP25 and CIP68 metadata processing and storage, including formatting adjustments and label fixes. Commits: 98335cbc02c2f11f80673ddda88688cb7b20d9bd; 208db23416d1849ad1eb7c4208b178ce6dff0f2b; 5ad4054c3873bad228987f3b16966c84d6366835; 53d3e224af6c1bd535e62d4afe9edee2b69f2e31. - Asset mint history storage/handler and remaining placeholder endpoints. Commit: 79c735f162784d849e5e7d6d8b5512020286e848. - UTxO indexing and address-state enhancements; identifier standardization to TxIdentifier/UTxOIdentifier; registry renamed to UTxORegistry with live in-memory state. Commits: e90a68cd808f609640c808b265b8d04930f85bf0; ea556892286bd93e57fe47cb5fd2963cac1351ac; 688a71bd9dd256300149f7386bc67a9194fa8efc; d448237a272567cea83b4f8c203d5631c7f9a110. - REST parameter endpoints and query improvements; cleaned unneeded current_epoch field. Commits: 576f80bc373b6f12ffcaf35346f80b090ec3e59f; ea68e83e921915f5372f7ff5a63824d2d3b9ed5a; 29af8d55467762481c970d63c74c3bfd783e178a. Major bugs fixed: - Babbage params update before initialization: bail if update occurs too early. Commit: 25b129a275b2eb1d10756e01f68318010b481a9e. - Policy ID conversion handling corrected with proper match and error logging. Commit: 87abfeac12ed9877cf13c94d06fcd1f5cda6551a. - UTXO deltas subscription logic simplified for stability. Commit: 05f2e3241ece317d2436157e0bb258f9e808955e. - Pause epoch reset to none to avoid unintended pauses. Commit: 1cc16799edfe81afcdf69ce30327377e38411ee6. - Asset-related fixes: proper user token association, state/refactor cleanups, and removal of redundant endpoints/tests. Commits: a24b53038b9d84c0862af3816c869e36ab8aefd2; dee2762fa9ab17751733bb0cd9c9c6315a2e14a5; 6d846b7830f181b3f08afde4c17d4aa56c93882f; d91486bbf45f5300b8f4158035897d36dde83679. Overall impact and accomplishments: - Significantly enhanced asset tracking and external integration via native assets, CIP25/68 metadata, and /assets endpoints. - Improved reliability and performance through in-memory UTxORegistry, indexing, and standardized identifiers. - Expanded test coverage and maintainability with targeted tests for AssetRegistry, CIP-25/68 handling, and address/transaction handlers. Technologies and skills demonstrated: - Rust-based in-memory state management, IMBL HashMap usage, REST endpoint design, and CIP25/CIP68 metadata workflows." ,

August 2025 monthly summary for input-output-hk/acropolis focusing on business value, reliability, and governance capabilities. Key work established robust state management and governance visibility across SPDD/DRDD and DRep systems, with data access optimizations and improved protocol parameter history handling.

July 2025 monthly summary focused on delivering scalable REST API capabilities, architectural refactors, and improved testability across key repositories. Key features delivered and major improvements: - UTXO REST Query Enhancement (query by index; refactor to use handle_rest_with_parameter) – 2e5e7492a1f2da8ae69a79a36ac108f107642db7 - Governance-state REST API Refactor – multiple commits culminating in a finished REST refactor (WIP trajectory closed) in caec27f7e15f036cdf137c1b24963d694703e28b, cf2c3f31c4e706b1864d44f54faeeeb6c1aaa992, a5440c9972512ec4a6996d79c4d48263ee23bc38 - OpenAPI Spec and REST Framework Refactor – rollout and ongoing alignment with REST handlers and dynamic params: a078fc0b7b0e8dedb6e835d359b518584b7d409f; e5ac30d1a68916d6f8df2f3ab6337403735d9386; abc0b0dc53abd4646b8349021a3356e6030770cc; 52d60bf200564a2bcfcf7a68e5763434c3dc1186; 4b6001282467d5177d109b61a65ad5efa6fe7ad7; de9216896952912b429814f279ae199a4d32a0b0; dc3066af6d851881f8a7780ba7ddad5934544d57 - REST API Fixes – conform RESTResponse usage, propagate bech32 errors, realign with topics/rest.rs: 8e5f456955b809450fe12c865b95327339a8ebc1; 7c65b3850277f05e5116248913e8debd94978f0d; 6b30a6a2d269b30cd68cb84864b01fd630dcf4ff - Drep-state REST Endpoints Refactor – refactor completed: 300a8fee303da6f599fb868f1208a617854b8e39 - Pause/increment functionality for snapshot fetcher – enabling incremental snapshot processing: 103344fc571d21278b18679acb117ddad12d4adf - Epoch activity REST endpoints with optional historical storage and OpenAPI integration – REST endpoints, data structure updates, and population logic: f68273b4b1d130ce1fb2bc8f4ddf1aba8f1d5911; dce1f50f7d3c030da5f7c00f3d3ad4c5eaff3afe; 5d8aeae11f6ff16bc3a4657086496a5caf1fcda6; ae1b0dbff1da4bd975c99f5d15ea04c535f49f17 - Protocol parameter REST endpoints with optional historical storage (WIP): 6efdd04fcc30d4b0f529378c0495617a406d1151 - REST Blockfrost module and REST infrastructure refactor – module creation and endpoint relocation: eae24c7426ce9c2f0348fc325fccc6297d9c6a05; 614c28308a875d88f297341324f3c3c21f5d2e56; c8257288e8e1ae5354f9bf7133047143d395b8d1 - SPDD/DRDD distribution modules with REST endpoints – historical distribution lookups: e40a33db070ebc5606cf464f1c9add075156100b; e395ac7593a1643337153001c38e8854555bca27; a8f86a0ce24211370e9cfdab9914be1fe0918519 - Test bug: end epoch test starts at epoch 0 – edge-case protection: 4c91755ae517f937efbe74d9028aca9b3afeea99 - In-memory ledger store with ReadOnlyStore and TransactionContext support (MemoryStore) – groundwork for faster, isolated tests and more robust ledger storage: 41ba1c26f82c813dfd052f9bc2adeb55dcd5957c Major bugs fixed: - REST API consistency and error propagation fixes across the board, including RESTResponse usage changes and bech32 error propagation: 8e5f456955b809450fe12c865b95327339a8ebc1; 7c65b3850277f05e5116248913e8debd94978f0d; 6b30a6a2d269b30cd68cb84864b01fd630dcf4ff - End epoch test edge-case handling corrected to start at epoch 0 to ensure correct evaluation: 4c91755ae517f937efbe74d9028aca9b3afeea99 Overall impact and accomplishments: - Significantly improved API consistency, extensibility, and developer experience through OpenAPI-driven REST and dynamic parameter handling, enabling faster onboarding and external integrations. - Enabled richer data exposure and historical analysis capabilities via epoch activity, SPDD/DRDD, and protocol parameter endpoints with optional historical storage. - Increased reliability with targeted fixes to REST response handling and error propagation, ensuring clearer failure modes for API consumers. - Strengthened testability and maintainability with a new in-memory ledger store and modular REST infrastructure. Technologies/skills demonstrated: - Rust-based REST API design and refactor, OpenAPI spec rollout, dynamic REST parameter extraction, and modular REST architecture (rest.rs, rest_block, rest_blockfrost) - Error propagation patterns (bech32), RESTResponse alignment, and endpoint path management - Test infrastructure enhancements (MemoryStore, test utilities) and historical data support for governance/state endpoints Business value: - Faster delivery cycles for API features and improvements, improved reliability for client integrations, and better support for historical data access and compliance requirements.

June 2025 monthly summary for two Rust repos: pragma-org/amaru and input-output-hk/acropolis. Focused on code quality improvements and dependency hygiene with no user-facing changes. Key outcomes include maintainability gains, reduced risk of regressions, and alignment with library updates to support future feature work. Two main items delivered this month: (1) Code quality cleanup in amaru-kernel and amaru-mempool (import reorganization and newline termination) with no functional changes; (2) Pallas dependency upgrade to v0.32.1 across acropolis modules via Cargo.toml changes. Commit-level changes kept isolated to formatting and dependency configuration to minimize blast radius and risk.