stjohn_piano 2020-07-19 no Contents - Description - Assets - Notes - Recipe - Example Description This recipe describes a method of generating a standard Bitcoin address from a private key. Assets Asset: A library of functions for handling standard Bitcoin data types. asset_of_another_article Creating_a_Bitcoin_transaction_with_two_outputs edgecase 85 bitcoin_functions_2.py bitcoin_functions_2.py 653f38ebab7f7c176ce7925364b5916c32b8e97ab5d4c00a66b990a0b6e0074c Asset: An implementation of RIPEMD-160, written by B_j_o:r_n_ E_d_s_t_r_o:m_. asset_of_another_article Reading_and_verifying_a_standard_raw_bitcoin_transaction edgecase 51 bjorn_edstrom_ripemd160.py bjorn_edstrom_ripemd160.py a5ca6eb289989861e30806ff7e39165622bd366a1c6cd5edd2dbd7dfc4877666 Asset: A Python implementation of ECDSA cryptography, written by Peter Pearson. asset_of_another_article Reading_and_verifying_a_standard_raw_bitcoin_transaction edgecase 51 ecdsa-0.10.tar.gz ecdsa-0.10.tar.gz 67dae9e1af2b0fd71bc9a378654f7dc89211c1c5aee71e160f8cfce1fa6d6980 Asset: A script that generates a standard Bitcoin address from a private key. asset_of_another_article Edgecase_Bitcoin_Storage_Toolset_version_2 edgecase 148 generate_bitcoin_address_4.py generate_bitcoin_address_4.py f8fad8e3c31555b9ff309d52fca360a9e22ea0f8b3689bfa9fc8e6370339f456 Asset: A Python implementation of SHA256. Author unknown. asset_of_another_article Reading_and_verifying_a_standard_raw_bitcoin_transaction edgecase 51 pypy_sha256.py pypy_sha256.py 2bbd4a83b69625e2f7ece5201475af2803f0ea11f3815c83d8afab3773d8f47b Notes My working definition of a standard address: - An uncompressed single-signature Pay-To-Public-Key-Hash (P2PKH) address. Standard addresses start with the character '1'. This recipe assumes that you have already generated a private key (32 bytes). The following article describes one way to do this: recipe_for_generating_entropy_bytes_using_dice_2 : article Recipe_for_generating_entropy_bytes_using_dice_#2 edgecase 151 Recipe for generating entropy bytes using dice #2 Previous version of this recipe: article Recipe_for_generating_a_Bitcoin_address edgecase 69 Recipe for generating a Bitcoin address The code used in this recipe has been run in Python 2.7.5 on CentOS 7.6 and in Python 2.7.13 on Mac OS X 10.6.8. It should run successfully in Python 2.7.x. Recipe Initial conditions: - You must already have a Bitcoin private key (ideally 32 bytes, but can be fewer). A 32-byte private key will be 64 hex characters. Hex characters consist of the ten digit characters "0123456789" and the lower-case alphabetical characters "abcdef". Example Bitcoin private key: 15e7e195332b0aa8a684dc3be1f29dd04daa0a5434c11a8b9e6ad180df076ae4 1) Create a work directory. 2) Browse to the Assets section of this article and download all the linked assets. List of assets: - bitcoin_functions_2.py - bjorn_edstrom_ripemd160.py - ecdsa-0.10.tar.gz - generate_bitcoin_address_4.py - pypy_sha256.py 3) Move these assets into the work directory. 4) Unpack the zipped tape archive file ecdsa-0.10.tar.gz. This can be done by opening a terminal, changing directory to the work directory, and running the following command: tar -zxvf ecdsa-0.10.tar.gz This unpacking will produce a new directory named "ecdsa-0.10" in the work directory. The directory "ecdsa-0.10" will contain a directory named "ecdsa". Copy the "ecdsa" directory into the work directory. 5) Open the file generate_bitcoin_address_4.py in a text editor. Scroll to lines 71-77, which should be the section of text that lies between ##### START CONTROLS and ##### END CONTROLS 6) Set the variable private_key_type to "hex_bytes". By default, it is already set to this value. 7) Set the variable private_key_hex_bytes to be the private key. 8) Open a terminal and change directory to the work directory. 9) Run the following command: python generate_bitcoin_address_4.py The output should contain the Bitcoin address that corresponds to your private key. Example I've used the example private key shown earlier. aineko:work stjohnpiano$ python generate_bitcoin_address_4.py ### START GENERATION OF BITCOIN ADDRESS Private key (hex bytes): 15e7e195332b0aa8a684dc3be1f29dd04daa0a5434c11a8b9e6ad180df076ae4 Private key (32 hex bytes): 15e7e195332b0aa8a684dc3be1f29dd04daa0a5434c11a8b9e6ad180df076ae4 Private key (WIF): 5Hyw8omWJ9NxPXDzk6unt8kM28oanScP4msfUvt3L9nPt8wZdVf Bitcoin address: 14gLgyVBiK7i7gtPLLYcVCAKfBuj1rL9JT ### END GENERATION OF BITCOIN ADDRESS