Bitcoin: Verify Hash from bitaddress.org without the original HTML file
I can help you with that. Here is a step-by-step guide to verifying that you are using an authentic version of BitAddress.org by using the SHA256 hash string and verifying it against the original HTML file:
Step 1: Download the original HTML file
If you want to verify the authenticity of your BitAddress.org HTML file, you will need to download the original HTML file from the BitAddress.org website. You can do this by visiting [ and clicking the “Download” button.
Step 2: Verify the SHA256 Hash String
After downloading the original HTML file, extract its contents using a command line tool such as tar
or unzip
. This will give you the contents of the HTML file in a file with the .html
extension. You can then use a hex editor or a tool like sha256sum
to verify the SHA256 hash string.
For example, on Linux, you can use sha1sum bitaddress.org.html | head -n 1
to get the first line of the SHA256 hash string:
$ sha1sum bitaddress.org.html | head -n 1
...
This will show you a shortened version of the SHA256 hash string.
Step 3: Verify against the original HTML file
Compare the SHA256 hash string from step 2 with the contents of the original HTML file. If they match, it means that your BitAddress.org HTML file is an authentic copy.
For example:
$ sha1sum bitaddress.org.html | head -n 1
...
Original HTML file content:
... (insert content here)
Hash string:
...
If the SHA256 hash strings match, you have successfully verified that your BitAddress.org HTML file is an authentic copy.
Linux command to verify
Here is a Linux command to help you verify the authenticity of your BitAddress.org HTML file using sha256sum
and compare it to the original contents:
$ sha1sum bitaddress.org.html | head -n 1 && cat <(echo "$(( $(sha256sum bitaddress.org.html) | head -n 1))" > /dev/null)
This command downloads the SHA256 hash string, prints it to the console using head -n 1
, and then uses cat
to redirect its output to a file. The $( ... )
syntax is used to execute the result of sha256sum bitaddress.org.html
as a shell command.
If the content matches, this command should print nothing. If there is any discrepancy, you will see an error message stating that the SHA256 hash string does not match the original content.
Note: This method assumes that your BitAddress.org HTML file is stored in the same directory as the script and has the extension .html
. Also, keep in mind that this method only checks whether the SHA256 hash string matches the original content; it does not verify that you are using the correct version of BitAddress.org.
I hope this helps! Let me know if you have any more questions or concerns.