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My Work & Mission

#AboutChristopherA

I'm Christopher Allen, an entrepreneur, technologist, and advocate for trust, security, and digital sovereignty. My journey began with co-authoring the IETF TLS internet standard, the foundation of secure web commerce. Over the years, I've been privileged to contribute to the evolution of self-sovereign identity (SSI) and decentralized identity standards.

My career path includes roles such as Principal Architect at Blockstream, VP of Developer Relations at Blackphone, and CTO of Certicom. Currently, I lead Blockchain Commons, focusing on cryptographic security, open infrastructure, and ensuring that individuals—not corporations or governments—control their own digital destinies.

My approach to technology is deeply rooted in values that prioritize human dignity, individual autonomy, and security by design. I believe that trust and transparency should be fundamental to digital infrastructure, ensuring that people—not corpor

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ChristopherA / Open_Integrity_Problem_Statement.md
Last active February 18, 2025 20:12
Open Integrity: A Cryptographic Root of Trust for Git Repositories

Open_Integrity_Problem_Statement.md

Open Integrity: A Cryptographic Root of Trust for Git Repositories

(last updated 2024-02-18, Christopher Allen [email protected] Github/Twitter/Bluesky: @ChristopherA)

Introduction & Problem Statement

The Open Integrity project, an initiative of Blockchain Commons, demonstrates how Git repositories can serve as a cryptographic root of trust, ensuring integrity, provenance, and accountability in software development. By combining Git's native signing capabilities with structured cryptographic verification and auditing processes, this proof-of-concept creates tamper-resistant and independently verifiable software and data stores.

This approach enables:

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ChristopherA / git_worktrees.md
Last active February 7, 2025 02:07
Git Worktree Best Practices and Tools

Git Worktree Best Practices and Tools

Last Updated: 2024-02-06

Overview

Git worktrees allow you to check out multiple branches simultaneously in separate directories, while sharing a single .git metadata store.

THere are some best practices, useful Git aliases, and shell functions for efficiently managing Git worktrees. It covers:

  • Setting up Git aliases for worktree operations.
  • Using shell functions for enhanced worktree management.
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ChristopherA / MuSig2_Sequence_Diagrams.md
Last active November 2, 2024 22:40
MuSig2 Sequence Diagrams

MuSig2 Sequence Diagrams

  • ABSTRACT: This document provides sequence diagrams for the MuSig2 multisignature protocol, covering 2-of-2 multisig with direct peer-to-peer interaction and 3-of-3 multisig with a Coordinator. It integrates GSTP and ESC to ensure secure, trustless communication, offering a practical guide for implementing efficient, private, and secure multisig solutions.

  • COPYRIGHT: This text of this guide is Copyright ©️2024 by Blockchain Commons, and was written by Christopher Allen. It is shared under spdx:CC-BY4.0 open-source license.

  • MAIN BRANCH: The main branch of this diagram is now part of the Blockchain Commons Developer Website. Use the Gordian Developer Community Discussions if you have questions or use the [Issues](https://github.com/Blockchai

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ChristopherA / Schnorr_Opportunities.md
Last active December 13, 2024 23:38
Schnorr Opportunities

Links to Schnorr Opportunities

OVERVIEW: A hub of links exploring the potential of Schnorr signatures and related cryptographic innovations. It highlights their applications in enhancing efficiency, privacy, and functionality across blockchain systems, particularly Bitcoin, while also emphasizing broader implications for secure protocols, multisignature schemes, and decentralized technologies. These annotated links are to foundational articles, research, and discussions, offering insights into the transformative opportunities these Schnorr related opportunities present.

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ChristopherA / Web_Based_Markdown_Tools.md
Last active January 4, 2025 13:40
Web-Based Markdown Tools
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ChristopherA / useful_jekyll_blog_snippets.md
Last active June 12, 2024 21:46
Useful Jekyll Blog Snippets
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ChristopherA / progressive_trust_links.md
Last active June 13, 2024 05:44
Progressive Trust Links