# HG changeset patch # User Dennis Concepcion Martin # Date 1634240530 -7200 # Node ID 2327b9eda10f377d30b23e9bd9faea332a2aa7ce first commit diff -r 000000000000 -r 2327b9eda10f .gitignore --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/.gitignore Thu Oct 14 21:42:10 2021 +0200 @@ -0,0 +1,280 @@ + +# Created by https://www.toptal.com/developers/gitignore/api/macos,python,pycharm +# Edit at https://www.toptal.com/developers/gitignore?templates=macos,python,pycharm + +### macOS ### +# General +.DS_Store +.AppleDouble +.LSOverride + +# Icon must end with two \r +Icon + + +# Thumbnails +._* + +# Files that might appear in the root of a volume +.DocumentRevisions-V100 +.fseventsd +.Spotlight-V100 +.TemporaryItems +.Trashes +.VolumeIcon.icns +.com.apple.timemachine.donotpresent + +# Directories potentially created on remote AFP share +.AppleDB +.AppleDesktop +Network Trash Folder +Temporary Items +.apdisk + +### PyCharm ### +# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio, WebStorm and Rider +# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839 + +# User-specific stuff +.idea/**/workspace.xml +.idea/**/tasks.xml +.idea/**/usage.statistics.xml +.idea/**/dictionaries +.idea/**/shelf + +# AWS User-specific +.idea/**/aws.xml + +# Generated files +.idea/**/contentModel.xml + +# Sensitive or high-churn files +.idea/**/dataSources/ +.idea/**/dataSources.ids +.idea/**/dataSources.local.xml +.idea/**/sqlDataSources.xml +.idea/**/dynamic.xml +.idea/**/uiDesigner.xml +.idea/**/dbnavigator.xml + +# Gradle +.idea/**/gradle.xml +.idea/**/libraries + +# Gradle and Maven with auto-import +# When using Gradle or Maven with auto-import, you should exclude module files, +# since they will be recreated, and may cause churn. Uncomment if using +# auto-import. +# .idea/artifacts +# .idea/compiler.xml +# .idea/jarRepositories.xml +# .idea/modules.xml +# .idea/*.iml +# .idea/modules +# *.iml +# *.ipr + +# CMake +cmake-build-*/ + +# Mongo Explorer plugin +.idea/**/mongoSettings.xml + +# File-based project format +*.iws + +# IntelliJ +out/ + +# mpeltonen/sbt-idea plugin +.idea_modules/ + +# JIRA plugin +atlassian-ide-plugin.xml + +# Cursive Clojure plugin +.idea/replstate.xml + +# Crashlytics plugin (for Android Studio and IntelliJ) +com_crashlytics_export_strings.xml +crashlytics.properties +crashlytics-build.properties +fabric.properties + +# Editor-based Rest Client +.idea/httpRequests + +# Android studio 3.1+ serialized cache file +.idea/caches/build_file_checksums.ser + +### PyCharm Patch ### +# Comment Reason: https://github.com/joeblau/gitignore.io/issues/186#issuecomment-215987721 + +# *.iml +# modules.xml +# .idea/misc.xml +# *.ipr + +# Sonarlint plugin +# https://plugins.jetbrains.com/plugin/7973-sonarlint +.idea/**/sonarlint/ + +# SonarQube Plugin +# https://plugins.jetbrains.com/plugin/7238-sonarqube-community-plugin +.idea/**/sonarIssues.xml + +# Markdown Navigator plugin +# https://plugins.jetbrains.com/plugin/7896-markdown-navigator-enhanced +.idea/**/markdown-navigator.xml +.idea/**/markdown-navigator-enh.xml +.idea/**/markdown-navigator/ + +# Cache file creation bug +# See https://youtrack.jetbrains.com/issue/JBR-2257 +.idea/$CACHE_FILE$ + +# CodeStream plugin +# https://plugins.jetbrains.com/plugin/12206-codestream +.idea/codestream.xml + +### Python ### +# Byte-compiled / optimized / DLL files +__pycache__/ +*.py[cod] +*$py.class + +# C extensions +*.so + +# Distribution / packaging +.Python +build/ +develop-eggs/ +dist/ +downloads/ +eggs/ +.eggs/ +lib/ +lib64/ +parts/ +sdist/ +var/ +wheels/ +share/python-wheels/ +*.egg-info/ +.installed.cfg +*.egg +MANIFEST + +# PyInstaller +# Usually these files are written by a python script from a template +# before PyInstaller builds the exe, so as to inject date/other infos into it. +*.manifest +*.spec + +# Installer logs +pip-log.txt +pip-delete-this-directory.txt + +# Unit test / coverage reports +htmlcov/ +.tox/ +.nox/ +.coverage +.coverage.* +.cache +nosetests.xml +coverage.xml +*.cover +*.py,cover +.hypothesis/ +.pytest_cache/ +cover/ + +# Translations +*.mo +*.pot + +# Django stuff: +*.log +local_settings.py +db.sqlite3 +db.sqlite3-journal + +# Flask stuff: +instance/ +.webassets-cache + +# Scrapy stuff: +.scrapy + +# Sphinx documentation +docs/_build/ + +# PyBuilder +.pybuilder/ +target/ + +# Jupyter Notebook +.ipynb_checkpoints + +# IPython +profile_default/ +ipython_config.py + +# pyenv +# For a library or package, you might want to ignore these files since the code is +# intended to run in multiple environments; otherwise, check them in: +# .python-version + +# pipenv +# According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control. +# However, in case of collaboration, if having platform-specific dependencies or dependencies +# having no cross-platform support, pipenv may install dependencies that don't work, or not +# install all needed dependencies. +#Pipfile.lock + +# PEP 582; used by e.g. github.com/David-OConnor/pyflow +__pypackages__/ + +# Celery stuff +celerybeat-schedule +celerybeat.pid + +# SageMath parsed files +*.sage.py + +# Environments +.env +.venv +env/ +venv/ +ENV/ +env.bak/ +venv.bak/ + +# Spyder project settings +.spyderproject +.spyproject + +# Rope project settings +.ropeproject + +# mkdocs documentation +/site + +# mypy +.mypy_cache/ +.dmypy.json +dmypy.json + +# Pyre type checker +.pyre/ + +# pytype static type analyzer +.pytype/ + +# Cython debug symbols +cython_debug/ + +# End of https://www.toptal.com/developers/gitignore/api/macos,python,pycharm \ No newline at end of file diff -r 000000000000 -r 2327b9eda10f .idea/.gitignore --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/.idea/.gitignore Thu Oct 14 21:42:10 2021 +0200 @@ -0,0 +1,10 @@ +# Default ignored files +/shelf/ +/workspace.xml +# Datasource local storage ignored files +/dataSources/ +/dataSources.local.xml +# Editor-based HTTP Client requests +/httpRequests/ +# Zeppelin ignored files +/ZeppelinRemoteNotebooks/ diff -r 000000000000 -r 2327b9eda10f .idea/inspectionProfiles/Project_Default.xml --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/.idea/inspectionProfiles/Project_Default.xml Thu Oct 14 21:42:10 2021 +0200 @@ -0,0 +1,38 @@ + + + + \ No newline at end of file diff -r 000000000000 -r 2327b9eda10f .idea/inspectionProfiles/profiles_settings.xml --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/.idea/inspectionProfiles/profiles_settings.xml Thu Oct 14 21:42:10 2021 +0200 @@ -0,0 +1,6 @@ + + + + \ No newline at end of file diff -r 000000000000 -r 2327b9eda10f .idea/misc.xml --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/.idea/misc.xml Thu Oct 14 21:42:10 2021 +0200 @@ -0,0 +1,4 @@ + + + + \ No newline at end of file diff -r 000000000000 -r 2327b9eda10f .idea/modules.xml --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/.idea/modules.xml Thu Oct 14 21:42:10 2021 +0200 @@ -0,0 +1,8 @@ + + + + + + + + \ No newline at end of file diff -r 000000000000 -r 2327b9eda10f .idea/puppy.iml --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/.idea/puppy.iml Thu Oct 14 21:42:10 2021 +0200 @@ -0,0 +1,10 @@ + + + + + + + + + + \ No newline at end of file diff -r 000000000000 -r 2327b9eda10f .idea/vcs.xml --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/.idea/vcs.xml Thu Oct 14 21:42:10 2021 +0200 @@ -0,0 +1,13 @@ + + + + + + + + + \ No newline at end of file diff -r 000000000000 -r 2327b9eda10f main.py --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.py Thu Oct 14 21:42:10 2021 +0200 @@ -0,0 +1,10 @@ +from src.block import read_block + + +def main(): + with open('/Users/dennis/Bitcoin/blocks/blk00000.dat', 'rb') as file: + read_block(file) + + +if __name__ == '__main__': + main() diff -r 000000000000 -r 2327b9eda10f src/block.py --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/block.py Thu Oct 14 21:42:10 2021 +0200 @@ -0,0 +1,48 @@ +import hashlib +from src.helpers import read_bytes + + +class Block: + """ + Block structure + """ + + block_hash = None + magic_number = None + size = None + + def __init__(self): + # Init BlockHeader class + self.header = self.Header() + + class Header: + version = None + previous_block_hash = None + merkle_root = None + timestamp = None + difficult_target = None + nonce = None + + +def read_block(file): + """ + Deserialize block + :param file: , required + :return: + """ + + block = Block() + block.magic_number = int(read_bytes(file, 4), 16) + block.size = int(read_bytes(file, 4), 16) + + # Compute block hash + header_bytes = file.read(80) + block_hash = hashlib.sha256(header_bytes).digest() + block_hash = hashlib.sha256(block_hash).digest() + + # Read block header + header = block.Header() + header.block_hash = block_hash[::-1].hex() + header.version = int.from_bytes(header_bytes[:4], 'little') + header.previous_block_hash = header_bytes[4:32].hex() + diff -r 000000000000 -r 2327b9eda10f src/helpers.py --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/helpers.py Thu Oct 14 21:42:10 2021 +0200 @@ -0,0 +1,18 @@ +def read_bytes(file, number_of_bytes, bytes_order='backward'): + """ + Read bytes from buffer + :param file: , required + :param number_of_bytes: int, required + :param bytes_order: string, 'backward' or 'forward', required + :return: string + """ + + # More info about bytes order: https://en.wikipedia.org/wiki/Endianness + + b = file.read(number_of_bytes) + if bytes_order == 'backward': + b = b[::-1] + + b = b.hex().upper() + + return b