# Changelog
All notable changes to this project will be documented in this file.
The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
## [Unreleased]
## [0.2.0] - 2026-01-26
### Added
- New `btck_block_tree_entry_equals` function for comparing BlockTreeEntry objects (096924d39d64)
- New `btck_PrecomputedTransactionData` object for holding transaction hashes required when validating scripts (eb0594e23f0c)
- New `btck_BlockHeader` object for holding block headers (9a9d797ef6ed)
- New functions for working with block headers `btck_block_header_get_*`, `btck_block_get_header`, `btck_block_tree_entry_get_block_header` (9a9d797ef6ed)
- New `btck_chainstate_manager_process_block_header` for processing block headers - validating them, and adding them to the chainstate manager's block tree
data structure (9a9d797ef6ed)
- New `btck_chainstate_manager_get_best_entry` for retrieving the block tree entry with the most known cumulative proof of work (9a9d797ef6ed)
- New `btck_block_validation_state_*` functions for managing an owned block validation state, that may be used for processing block headers (9a9d797ef6ed)
### Changed
- `data_directory` and `blocks_directory` parameters in `btck_chainstate_manager_options_create` now allow null values to represent empty paths (6657bcbdb4d0)
- `btck_script_pubkey_verify` now takes a `btck_PrecomputedTransactionData` instead of an array of outputs for verifying taproot outputs (eb0594e23f0c)
## [0.1.1] - 2025-24-11
### Fixed
- Precise package excludes to ensure the test/fuzz directory is included
in the packaged crate correctly.