Privacy-first security framework

Sealed until observed.
Observation leaves receipts.

SCQCS defines patterns for append-only logging, sealed storage, and accountable access. A framework for systems where privacy and auditability must coexist.

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> Claude ChatGPT Gemini Qwen Claude , use github.com/kmay89/SCQCS  to build me a site about  your idea here
The Framework

What is SCQCS?

Schrödinger's Cat Quantum Cryptography & Security

SCQCS is a set of architectural patterns and security principles for building systems that need both privacy and accountability. Named after the famous thought experiment, it embodies a core insight: data should remain sealed until deliberately observed—and observation should leave auditable evidence.

The framework provides guidance for implementing append-only event chains, sealed vault storage, controlled "break-glass" access, and cryptographic agility. It's designed for systems where you need to prove what happened without enabling surveillance.

SCQCS is not a product—it's a philosophy and pattern library. Implementations may vary in how they apply these principles to their specific domains.

SCQCS Canary - The Witness
Core Patterns

Three pillars of accountable privacy

These patterns form the foundation of any SCQCS-aligned system.

📜

Append-only logging

Events chain forward cryptographically. Modifications become detectable. Deletions become evident. History becomes verifiable.

🔐

Sealed storage

Data encrypted at rest with minimal metadata exposure. Designed for retention without sprawl, access without surveillance.

🚨

Accountable access

Emergency access patterns that are scoped, logged, and attributable. Exceptions exist—but they leave durable, tamper-evident receipts.

Principles

Security is architecture

These constraints shape every design decision from day one.

01

Witness, not watcher

Support evidence without enabling surveillance. Collect only what's necessary. Resist scope creep.

data-minimization purpose-limitation
02

Audit over trust

Cryptographic proofs outlast policies and good intentions. Make integrity verifiable.

tamper-evident verifiable
03

Exceptions leave fingerprints

Emergency access exists—but every use is remembered. Attribution is automatic and durable.

least-privilege attribution
04

Plan for rotation

Algorithms weaken. Keys expire. Build migration paths from day one.

crypto-agility key-rotation
05

Local-first when possible

Every external dependency is attack surface. Minimize egress. Maximize autonomy.

local-first explicit-egress
06

Design for distrust

The threat model includes insiders. Make misuse architecturally difficult, not just prohibited.

zero-trust defense-in-depth
Reference Architecture

Contract-first patterns

SCQCS defines interfaces and behaviors, not implementations. Here's the mental model.

Evidence envelope model

Each record is an envelope containing minimal metadata, content digests, and policy tags. Envelopes chain forward—making modifications detectable and deletions evident.

record: ENVELOPE type=event scope=local
vault: ciphertext=… kdf=… policy=minimize
chain: prev_hash=… hash=VALID sig=VALID
access: break_glass=false export=none

Design assumptions

SCQCS patterns assume adversarial conditions by default.

  • ✓ Hostile network paths
  • ✓ Compromised endpoints
  • ✓ Insider threats
  • ✓ Algorithm deprecation

Important limitations

  • ✗ Not a compliance certification
  • ✗ Not legal advice
  • ✗ Not a security guarantee
  • ✗ Implementation-dependent
Access Patterns

Break-glass with receipts

Emergency access is sometimes necessary. SCQCS defines patterns that make it deliberate, scoped, and durably recorded.

🔓

Accountable exception handling

Three properties every break-glass implementation should enforce

01

Scoped by default

Access should be constrained to minimum necessary scope—time range, record types, and purpose.

02

Multi-party when appropriate

Consider requiring multiple approvals or split keys. Single-actor access is a design choice, not a default.

03

Durable attribution

Every access creates a tamper-evident receipt: who, when, justification, scope, and outcomes.

Ecosystem

Implementations & resources

SCQCS principles are being applied in various contexts. Here are some related projects.

👁️

SecuraCV

A privacy-preserving computer vision framework that outputs semantic events instead of storing video. Uses SCQCS patterns for its witness kernel and vault architecture.

Learn more
🔬

Open Source

SCQCS patterns and implementations are developed in the open. Explore the code, contribute improvements, or fork for your own projects.

View on GitHub
💬

Get involved

Interested in applying SCQCS patterns to your work? Building something that needs accountable privacy? Contact channels coming soon.

Coming soon
Open Source

Use this as a template

This repository is designed to be forked and adapted. Get a secure, privacy-respecting static site in minutes.

> Claude ChatGPT Gemini Qwen Claude , use github.com/kmay89/SCQCS  to build me a site about  your idea here

Production-ready security defaults

Fork the GitHub repo, customize the content, deploy to Netlify. All security headers, SEO optimization, and privacy best practices are already configured.

View on GitHub
1

Fork the repo

Clone or fork from GitHub to get all files and configurations.

2

Customize content

Replace scqcs.com with your domain throughout all files.

3

Update security.txt

Add your security contact info and policy links.

4

Deploy to Netlify

Connect to Netlify for free HTTPS, CDN, and automatic deploys.

What's included — free privacy tools

🛡️
_headers A+ security headers: CSP, HSTS, COOP, COEP, Permissions-Policy
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security.txt RFC 9116 compliant vulnerability disclosure policy
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robots.txt + llms.txt AI crawler directives and LLM-readable documentation
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SEO optimized Meta tags, Open Graph, Twitter Cards, JSON-LD structured data
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Preflight checklist Runnable pre-deploy audit with copy-paste commands
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Complete documentation Getting started guide, security reference, contribution guidelines
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Zero tracking No cookies, no analytics, no localStorage — verified clean
⚡
Production ready Responsive design, accessibility, performance optimized