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Focusing on OSSU/Computer Science

Vinicius Sa viniciusjavs

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Focusing on OSSU/Computer Science
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@markblundeberg
markblundeberg / pgp-checkdatasig.md
Created August 31, 2018 01:23
Using PGP signatures with bitcoin script OP_CHECKDATASIG

Using PGP signatures with bitcoin script OP_CHECKDATASIG

Dr. Mark B. Lundeberg, 2018 August 30 bitcoincash:qqy9myvyt7qffgye5a2mn2vn8ry95qm6asy40ptgx2

Since version 2.1, GnuPG is able to use the very same secp256k1 elliptic curve signature algorithm (ECDSA) as used in bitcoin. Quite soon Bitcoin Cash will add a new script opcode OP_CHECKDATASIG that is able to check signatures not just on the containing transaction, but also on arbitrary data. For fun, let's try to intersect the two signature systems and see what can be done!

Background

OP_CHECKDATASIG signatures

@robertpainsi
robertpainsi / README.md
Last active April 16, 2025 14:39
How to reopen a pull-request after a force-push?

How to reopen a pull-request after a force-push?

Precodinitions

  • You need the rights to reopen pull requests on the repository.
  • The pull request hasn't been merged, just closed.

Instructions

  1. Write down the current commit hash of your PR-branch git log --oneline -1 <PR-BRANCH>
  2. Write down the latest commit hash on github before the PR has been closed.
  3. git push -f origin :
@PurpleBooth
PurpleBooth / README-Template.md
Last active April 18, 2025 02:49
A template to make good README.md

Project Title

One Paragraph of project description goes here

Getting Started

These instructions will get you a copy of the project up and running on your local machine for development and testing purposes. See deployment for notes on how to deploy the project on a live system.

Prerequisites

@myusuf3
myusuf3 / delete_git_submodule.md
Created November 3, 2014 17:36
How effectively delete a git submodule.

To remove a submodule you need to:

  • Delete the relevant section from the .gitmodules file.
  • Stage the .gitmodules changes git add .gitmodules
  • Delete the relevant section from .git/config.
  • Run git rm --cached path_to_submodule (no trailing slash).
  • Run rm -rf .git/modules/path_to_submodule (no trailing slash).
  • Commit git commit -m "Removed submodule "
  • Delete the now untracked submodule files rm -rf path_to_submodule
@benbalter
benbalter / jekyll-drafts.md
Last active March 12, 2024 07:39
Example of using drafts in Jekyll

Let's say your Jekyll site's directory structure looks like:

|-- _config.yml
|-- _drafts/
|   |-- a-draft-post.md
|-- _layouts/
|   |-- default.html
|-- _posts/
| |-- 2013-05-10-a-published-post
@CristinaSolana
CristinaSolana / gist:1885435
Created February 22, 2012 14:56
Keeping a fork up to date

1. Clone your fork:

git clone [email protected]:YOUR-USERNAME/YOUR-FORKED-REPO.git

2. Add remote from original repository in your forked repository:

cd into/cloned/fork-repo
git remote add upstream git://github.com/ORIGINAL-DEV-USERNAME/REPO-YOU-FORKED-FROM.git
git fetch upstream