Initial commit: Git OpenTimestamp hooks skill
This commit is contained in:
Otto
commit
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16
.gitignore
vendored
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16
.gitignore
vendored
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# OpenTimestamp cache (local performance optimization)
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.ots/.attestation-cache
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# Packaged skill file
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*.skill
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# Editor/IDE
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.vscode/
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.idea/
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*.swp
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*.swo
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*~
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# OS
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.DS_Store
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Thumbs.db
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70
AGENTS.md
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70
AGENTS.md
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# AI Agent Instructions
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Quick reference for AI agents installing OpenTimestamp hooks.
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## When to Use
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Use this skill when the user wants to:
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- Add tamper-evident timestamps to git commits
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- Create cryptographic proof of commit history
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- Anchor commits to Bitcoin blockchain via OpenTimestamp
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## Installation (Recommended)
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**Self-contained hooks** - No external dependencies:
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```bash
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# 1. Install prerequisites
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pipx install opentimestamps-client
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# 2. Install hooks (single command)
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./hooks/install.sh .
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# 3. Commit proofs to repository
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git add .ots/ .gitignore
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git commit -m "Add OpenTimestamp proofs for commit history"
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```
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## Installation (Manual)
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Copy hook files directly:
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```bash
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cp hooks/post-commit .git/hooks/
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cp hooks/pre-commit .git/hooks/
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chmod +x .git/hooks/post-commit .git/hooks/pre-commit
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```
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**.gitignore**:
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```
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.ots/.attestation-cache
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```
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## Key Files
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| File | Purpose | Version? |
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|------|---------|----------|
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| `generate-proof.sh` | Creates proof for commit | Yes |
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| `backfill-proofs.sh` | Upgrades all historical proofs | Yes |
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| `install-ots-hook.sh` | Installs both hooks | Yes |
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| `.ots/*.ots` | Binary proofs | Yes |
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| `.ots/commit-chain.txt` | Commit chain | Yes |
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| `.ots/.attestation-cache` | Local cache | No |
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## Verification
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```bash
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# Check if proof is attested
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ots info .ots/<commit-hash>.ots | grep -c "PendingAttestation"
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# 0 = attested, >0 = pending
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# Verify proof
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ots verify .ots/<commit-hash>.ots
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```
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## Notes
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- Proofs take ~10 min to become Bitcoin-attested
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- Cache avoids redundant calendar calls (1-hour validity)
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- Pre-commit backfill adds ~10-15s to commit time
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- Safe to commit `.ots/` directory (binary proofs are small: ~500B each)
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129
README.md
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README.md
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# Git OpenTimestamp Hook
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Automatically generate and manage [OpenTimestamp](https://opentimestamps.org/) proofs for git commits.
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## What It Does
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- **Post-commit hook**: Creates cryptographic proof for every commit
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- **Pre-commit backfill**: Upgrades historical proofs to Bitcoin-attested status
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- **Proof chaining**: Links commits together for full history integrity
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- **Smart caching**: Minimizes network calls after initial backfill
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Proofs are stored in `.ots/` and can be versioned alongside your code for tamper-evident history.
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## Quick Install
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### Recommended: Self-Contained Hooks
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```bash
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# Clone or download this skill
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git clone <repository-url>
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cd git-ots-hook
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# Install both hooks (single command)
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./hooks/install.sh /path/to/your/repo
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# Commit the proofs
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cd /path/to/your/repo
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git add .ots/
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git commit -m "Add OpenTimestamp proofs"
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```
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That's it! The hooks are now installed and will automatically timestamp every commit.
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### Legacy: Script-Based Installation
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The older `scripts/` directory is still available but deprecated. See `SKILL.md` for details.
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## Manual Installation
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If you prefer to install hooks manually without the installer:
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### 1. Copy Hook Files
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```bash
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cp hooks/post-commit /path/to/your/repo/.git/hooks/
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cp hooks/pre-commit /path/to/your/repo/.git/hooks/
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chmod +x /path/to/your/repo/.git/hooks/post-commit
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chmod +x /path/to/your/repo/.git/hooks/pre-commit
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```
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### 2. Setup .gitignore
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Add to your `.gitignore`:
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```
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.ots/.attestation-cache
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```
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### 3. Commit Initial Proofs
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```bash
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git add .ots/
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git commit -m "Add OpenTimestamp proofs"
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```
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## Prerequisites
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Install the OpenTimestamp client:
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```bash
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# Recommended: Python CLI
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pipx install opentimestamps-client
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# Alternative: Node.js package
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npm install -g @opentimestamps/ots
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```
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Verify installation:
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```bash
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ots --version
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```
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## Generated Files
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```
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repo/
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├── .ots/
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│ ├── <commit-hash>.ots # Individual proof per commit
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│ ├── proof.ots # Latest commit proof
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│ ├── prev-commit.txt # Previous commit reference
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│ ├── commit-chain.txt # Full commit chain
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│ └── .attestation-cache # Local cache (gitignore this)
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└── ...
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```
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## Verification
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Verify a proof:
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```bash
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ots verify .ots/<commit-hash>.ots
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```
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Check attestation status:
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```bash
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./scripts/check-attestation.sh .ots/<commit-hash>.ots
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# Output: "attested" or "pending"
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```
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## How It Works
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1. **Commit created** → Post-commit hook runs
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2. **Proof generated** → `ots stamp` creates `.ots` file
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3. **Submitted to calendars** → 4+ remote calendars receive hash
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4. **Bitcoin anchoring** → Calendars batch and anchor to Bitcoin (~10 min)
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5. **Attestation** → Proof becomes fully verifiable against Bitcoin blockchain
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## Performance
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- **First backfill**: 30-60s (scans history, contacts calendars)
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- **Subsequent commits**: 10-15s (cached status skips redundant calls)
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- **Cache**: 1-hour validity, 10-min recheck for pending proofs
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## License
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MIT
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## Links
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- [OpenTimestamp](https://opentimestamps.org/)
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- [ots Client](https://github.com/opentimestamps/opentimestamps-client)
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163
SKILL.md
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163
SKILL.md
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---
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name: git-ots-hook
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description: Install and manage OpenTimestamp git hooks that generate cryptographic proof for every commit. Use when you need to add tamper-evident timestamps to git commits using the OpenTimestamp protocol. Supports both ots CLI and nodejs fallback.
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---
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# Git OpenTimestamp Hook
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Automatically generates OpenTimestamp proofs for git commits via git hooks.
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## Quick Start (Recommended)
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**New: Self-contained hooks** - No external dependencies, simple installation:
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```bash
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# Install both hooks (post-commit + pre-commit backfill)
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./hooks/install.sh /path/to/repo
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# Or from repo root
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./hooks/install.sh .
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```
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## Legacy Installation
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The older `scripts/` directory is still available for backward compatibility, but the new `hooks/` directory is recommended for simpler deployment.
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## What It Does
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- **Post-commit hook** (`hooks/post-commit`): Generates `.ots/<commit-hash>.ots` for each new commit
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- **Pre-commit backfill** (`hooks/pre-commit`): Before each commit, upgrades all historical proofs to attested status
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- Creates `.ots/proof.ots` with latest commit proof
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- Stores commit chain in `.ots/commit-chain.txt`
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- Works with `ots` CLI (preferred) or `@opentimestamps/ots` node package (fallback)
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- **Self-contained**: No external script dependencies, simple drop-in installation
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## Prerequisites
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Install one of:
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```bash
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# Option 1: ots CLI (recommended)
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git clone https://github.com/opentimestamps/opentimestamps-client
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cd opentimestamps-client
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pipx install .
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# Option 2: Node.js fallback
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npm install -g @opentimestamps/ots
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```
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## Generated Files
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The hooks create:
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```
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repo/
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├── .ots/
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│ ├── proof.ots # Timestamp proof for latest commit
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│ ├── <commit-hash>.ots # Individual proof for each commit
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│ ├── prev-commit.txt # Previous commit hash (for chaining)
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│ └── commit-chain.txt # Full commit chain mapping
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└── ...
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```
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Proof files include:
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- Commit hash timestamp (OpenTimestamp format)
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- Bitcoin attestation (after ~10 min confirmation)
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- Commit chain references
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## Manual Usage
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### New Self-Contained Hooks (Recommended)
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**Install hooks:**
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```bash
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./hooks/install.sh /path/to/repo
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```
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**Manual hook installation:**
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Copy `hooks/post-commit` and `hooks/pre-commit` directly to `.git/hooks/`
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### Legacy Scripts (Deprecated)
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**Generate proof for a specific commit:**
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```bash
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./scripts/generate-proof.sh <commit-hash> [output-file]
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```
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**Backfill proofs for entire history:**
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```bash
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./scripts/backfill-proofs.sh /path/to/repo
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```
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**Setup .gitignore (excludes cache only, keeps proofs):**
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```bash
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./scripts/setup-gitignore.sh /path/to/repo
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```
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**Check proof attestation status:**
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```bash
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./scripts/check-attestation.sh .ots/<commit-hash>.ots
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# Output: "attested" or "pending"
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```
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Example:
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```bash
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./scripts/generate-proof.sh abc123def456 .ots/proof.ots
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./scripts/backfill-proofs.sh .
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./scripts/setup-gitignore.sh .
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```
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## Uninstall
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```bash
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rm /path/to/repo/.git/hooks/post-commit
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```
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## Notes
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### Versioning Proofs (Recommended)
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To include proofs in your repository (recommended for tamper-evidence):
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```bash
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# Commit proofs with your code
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git add .ots/
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git commit -m "Add OpenTimestamp proofs"
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```
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The `.ots/` directory contains:
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- `*.ots` - Binary proof files (commit these)
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- `commit-chain.txt` - Commit chain mapping (commit this)
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- `prev-commit.txt` - Latest previous commit (commit this)
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- `.attestation-cache` - Local cache (add to `.gitignore`)
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**Recommended `.gitignore`:**
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```
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.ots/.attestation-cache
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```
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### Performance
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- **Pre-commit backfill** can slow down commits on large histories
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- First backfill: Full scan + calendar calls (~30-60s)
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- Subsequent commits: Cached status skips calendar calls (~10-15s)
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- Cache expires after 1 hour, re-checks pending proofs after 10 min
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### Other Notes
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- Hook is silent if neither `ots` nor node package is found
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- Proofs become "attested" after ~10 min (Bitcoin confirmation)
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## Troubleshooting
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**Hook not running?**
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- Check it's executable: `chmod +x .git/hooks/post-commit`
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- Test manually: `.git/hooks/post-commit`
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**Proof not generating?**
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- Verify `ots` or `@opentimestamps/ots` is installed
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- Check hook output: `git commit` shows `[ots]` messages
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**Want auto-commit proofs?**
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- Modify the hook to run `git add .ots/proof.ots && git commit --amend --no-edit`
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- ⚠️ This changes commit history - use with caution
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50
hooks/install.sh
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50
hooks/install.sh
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#!/bin/bash
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# Git OpenTimestamp Hooks Installer
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# Copies self-contained hooks to git repository
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set -e
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REPO_PATH="${1:-.}"
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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cd "$REPO_PATH"
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# Verify we're in a git repository
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if ! git rev-parse --git-dir > /dev/null 2>&1; then
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echo "Error: not a git repository" >&2
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exit 1
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fi
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HOOKS_DIR="$(git rev-parse --git-dir)/hooks"
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echo "Installing OpenTimestamp hooks to: $HOOKS_DIR"
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# Copy hooks
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cp "$SCRIPT_DIR/post-commit" "$HOOKS_DIR/post-commit"
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cp "$SCRIPT_DIR/pre-commit" "$HOOKS_DIR/pre-commit"
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# Make executable
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chmod +x "$HOOKS_DIR/post-commit" "$HOOKS_DIR/pre-commit"
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echo "✓ Post-commit hook installed"
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echo "✓ Pre-commit backfill hook installed"
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# Setup .gitignore
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GITIGNORE=".gitignore"
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if [ ! -f "$GITIGNORE" ]; then
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echo ".ots/.attestation-cache" > "$GITIGNORE"
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echo "✓ Created .gitignore"
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elif ! grep -q ".ots/.attestation-cache" "$GITIGNORE"; then
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echo "" >> "$GITIGNORE"
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echo ".ots/.attestation-cache" >> "$GITIGNORE"
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echo "✓ Updated .gitignore"
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fi
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echo ""
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echo "Next steps:"
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echo "1. Make a test commit to verify hooks work"
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echo "2. Commit the .ots/ directory: git add .ots/"
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echo "3. Commit with message: git commit -m 'Add OpenTimestamp proofs'"
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echo ""
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echo "To uninstall:"
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echo " rm $HOOKS_DIR/post-commit $HOOKS_DIR/pre-commit"
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91
hooks/post-commit
Executable file
91
hooks/post-commit
Executable file
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#!/bin/bash
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# Git OpenTimestamp Post-Commit Hook
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# Self-contained - no external dependencies
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# Generates cryptographic proof for each commit using OpenTimestamp
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set -e
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# Configuration
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OUTPUT_DIR=".ots"
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OUTPUT_FILE="$OUTPUT_DIR/proof.ots"
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# Ensure output directory exists
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mkdir -p "$OUTPUT_DIR"
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# Get the current commit hash
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COMMIT_HASH=$(git rev-parse HEAD)
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# Function to generate proof using ots CLI
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generate_with_ots_cli() {
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local hash="$1"
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local output="$2"
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# Create a temporary file with the hash (convert hex to binary)
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local temp_file=$(mktemp)
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local temp_ots="${temp_file}.ots"
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# Use python3 for hex to binary conversion (more portable than xxd)
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python3 -c "import sys; sys.stdout.buffer.write(bytes.fromhex('$hash'))" > "$temp_file"
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# Generate timestamp - ots creates .ots file alongside the original
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ots stamp "$temp_file" 2>/dev/null
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# Move the generated .ots file to the desired location
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if [ -f "$temp_ots" ]; then
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mv "$temp_ots" "$output"
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rm -f "$temp_file"
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return 0
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else
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rm -f "$temp_file"
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return 1
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fi
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}
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# Function to generate proof using nodejs fallback
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generate_with_node() {
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local hash="$1"
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local output="$2"
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node -e "
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const ots = require('@opentimestamps/ots');
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const fs = require('fs');
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const hash = '$hash';
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const output = '$output';
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const hashBuffer = Buffer.from(hash, 'hex');
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ots.Timestamp.hash(hashBuffer).then(timestamp => {
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const proof = { hash: hash, timestamp: new Date().toISOString(), status: 'pending' };
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fs.writeFileSync(output, JSON.stringify(proof, null, 2));
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console.log('Generated local proof (nodejs fallback)');
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}).catch(err => { console.error('Error:', err); process.exit(1); });
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"
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}
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||||
# Check for available tools and generate proof
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if command -v ots &> /dev/null; then
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if generate_with_ots_cli "$COMMIT_HASH" "$OUTPUT_FILE"; then
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echo "[ots] Generated proof with ots CLI: ${COMMIT_HASH:0:8}"
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else
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echo "[ots] Warning: ots CLI failed" >&2
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exit 0
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fi
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elif command -v node &> /dev/null && node -e "require('@opentimestamps/ots')" &> /dev/null 2>&1; then
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generate_with_node "$COMMIT_HASH" "$OUTPUT_FILE"
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||||
echo "[ots] Generated proof with nodejs fallback: ${COMMIT_HASH:0:8}"
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||||
else
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echo "[ots] Warning: Neither ots CLI nor @opentimestamps/ots found, skipping proof" >&2
|
||||
exit 0
|
||||
fi
|
||||
|
||||
# Save previous commit hash for chaining
|
||||
PREV_COMMIT=$(git rev-parse HEAD^1 2>/dev/null || echo "")
|
||||
if [ -n "$PREV_COMMIT" ]; then
|
||||
echo "$PREV_COMMIT" > "$OUTPUT_DIR/prev-commit.txt"
|
||||
fi
|
||||
|
||||
# Create individual proof file for this commit
|
||||
INDIVIDUAL_PROOF="$OUTPUT_DIR/${COMMIT_HASH}.ots"
|
||||
if [ -f "$OUTPUT_FILE" ]; then
|
||||
cp "$OUTPUT_FILE" "$INDIVIDUAL_PROOF"
|
||||
fi
|
||||
|
||||
echo "[ots] Proof generated successfully"
|
||||
156
hooks/pre-commit
Executable file
156
hooks/pre-commit
Executable file
|
|
@ -0,0 +1,156 @@
|
|||
#!/bin/bash
|
||||
# Git OpenTimestamp Pre-Commit Backfill Hook
|
||||
# Self-contained - no external dependencies
|
||||
# Upgrades all historical proofs before each new commit
|
||||
|
||||
set -e
|
||||
|
||||
# Configuration
|
||||
OUTPUT_DIR=".ots"
|
||||
STATUS_CACHE="$OUTPUT_DIR/.attestation-cache"
|
||||
|
||||
# Ensure output directory exists
|
||||
mkdir -p "$OUTPUT_DIR"
|
||||
|
||||
# Initialize cache file if it doesn't exist
|
||||
if [ ! -f "$STATUS_CACHE" ]; then
|
||||
echo "# Attestation status cache" > "$STATUS_CACHE"
|
||||
echo "# Format: commit-hash:status:timestamp" >> "$STATUS_CACHE"
|
||||
fi
|
||||
|
||||
# Function to get cached status
|
||||
get_cached_status() {
|
||||
local commit="$1"
|
||||
local cache_line=$(grep "^$commit:" "$STATUS_CACHE" 2>/dev/null | tail -1)
|
||||
if [ -n "$cache_line" ]; then
|
||||
local status=$(echo "$cache_line" | cut -d: -f2)
|
||||
local timestamp=$(echo "$cache_line" | cut -d: -f3)
|
||||
local now=$(date +%s)
|
||||
local age=$((now - timestamp))
|
||||
# Cache valid for 1 hour (3600 seconds)
|
||||
if [ "$age" -lt 3600 ]; then
|
||||
echo "$status"
|
||||
return 0
|
||||
fi
|
||||
fi
|
||||
return 1
|
||||
}
|
||||
|
||||
# Function to cache status
|
||||
cache_status() {
|
||||
local commit="$1"
|
||||
local status="$2"
|
||||
local now=$(date +%s)
|
||||
echo "$commit:$status:$now" >> "$STATUS_CACHE"
|
||||
}
|
||||
|
||||
# Function to generate proof using ots CLI
|
||||
generate_proof() {
|
||||
local hash="$1"
|
||||
local output="$2"
|
||||
|
||||
local temp_file=$(mktemp)
|
||||
local temp_ots="${temp_file}.ots"
|
||||
|
||||
python3 -c "import sys; sys.stdout.buffer.write(bytes.fromhex('$hash'))" > "$temp_file"
|
||||
ots stamp "$temp_file" 2>/dev/null
|
||||
|
||||
if [ -f "$temp_ots" ]; then
|
||||
mv "$temp_ots" "$output"
|
||||
rm -f "$temp_file"
|
||||
return 0
|
||||
else
|
||||
rm -f "$temp_file"
|
||||
return 1
|
||||
fi
|
||||
}
|
||||
|
||||
# Function to check if proof is attested
|
||||
is_attested() {
|
||||
local proof_file="$1"
|
||||
local pending_count=$(ots info "$proof_file" 2>&1 | grep -c "PendingAttestation" || echo "0")
|
||||
[ "$pending_count" -eq 0 ]
|
||||
}
|
||||
|
||||
# Function to upgrade proof
|
||||
upgrade_proof() {
|
||||
local proof_file="$1"
|
||||
ots upgrade "$proof_file" 2>/dev/null
|
||||
}
|
||||
|
||||
echo "[ots] Backfilling proofs..."
|
||||
|
||||
# Get all commit hashes (oldest to newest)
|
||||
COMMITS=$(git rev-list --reverse HEAD)
|
||||
TOTAL=$(echo "$COMMITS" | wc -l)
|
||||
CURRENT=0
|
||||
UPDATED=0
|
||||
|
||||
for COMMIT in $COMMITS; do
|
||||
CURRENT=$((CURRENT + 1))
|
||||
PROOF_FILE="$OUTPUT_DIR/${COMMIT}.ots"
|
||||
|
||||
# Skip verbose output for brevity
|
||||
if [ $CURRENT -le 3 ] || [ $CURRENT -eq $TOTAL ]; then
|
||||
echo "[ots] Processing commit $CURRENT/$TOTAL: ${COMMIT:0:8}"
|
||||
elif [ $CURRENT -eq 4 ]; then
|
||||
echo "[ots] ... processing remaining commits ..."
|
||||
fi
|
||||
|
||||
if [ -f "$PROOF_FILE" ]; then
|
||||
# Check cached status first
|
||||
CACHED_STATUS=$(get_cached_status "$COMMIT" || echo "")
|
||||
|
||||
if [ "$CACHED_STATUS" = "attested" ]; then
|
||||
continue
|
||||
fi
|
||||
|
||||
# Check if already attested
|
||||
if is_attested "$PROOF_FILE"; then
|
||||
cache_status "$COMMIT" "attested"
|
||||
continue
|
||||
fi
|
||||
|
||||
# Cache as pending
|
||||
cache_status "$COMMIT" "pending"
|
||||
|
||||
# Skip upgrade if cache is fresh (< 10 min old)
|
||||
CACHE_LINE=$(grep "^$COMMIT:" "$STATUS_CACHE" | tail -1)
|
||||
CACHE_TIME=$(echo "$CACHE_LINE" | cut -d: -f3)
|
||||
NOW=$(date +%s)
|
||||
CACHE_AGE=$((NOW - CACHE_TIME))
|
||||
|
||||
if [ "$CACHE_AGE" -lt 600 ]; then
|
||||
continue
|
||||
fi
|
||||
|
||||
# Try to upgrade
|
||||
if upgrade_proof "$PROOF_FILE"; then
|
||||
cache_status "$COMMIT" "attested"
|
||||
UPDATED=$((UPDATED + 1))
|
||||
fi
|
||||
else
|
||||
# Generate new proof
|
||||
if generate_proof "$COMMIT" "$PROOF_FILE"; then
|
||||
cache_status "$COMMIT" "pending"
|
||||
UPDATED=$((UPDATED + 1))
|
||||
fi
|
||||
fi
|
||||
done
|
||||
|
||||
# Update latest proof symlink
|
||||
LATEST_COMMIT=$(git rev-parse HEAD)
|
||||
if [ -f "$OUTPUT_DIR/${LATEST_COMMIT}.ots" ]; then
|
||||
cp "$OUTPUT_DIR/${LATEST_COMMIT}.ots" "$OUTPUT_DIR/proof.ots"
|
||||
fi
|
||||
|
||||
# Save commit chain
|
||||
rm -f "$OUTPUT_DIR/commit-chain.txt"
|
||||
git rev-list HEAD | while read COMMIT; do
|
||||
PREV=$(git rev-parse ${COMMIT}^1 2>/dev/null || echo "")
|
||||
if [ -n "$PREV" ]; then
|
||||
echo "$COMMIT:$PREV" >> "$OUTPUT_DIR/commit-chain.txt"
|
||||
fi
|
||||
done
|
||||
|
||||
echo "[ots] Backfill complete: $UPDATED proofs updated"
|
||||
165
scripts/backfill-proofs.sh
Executable file
165
scripts/backfill-proofs.sh
Executable file
|
|
@ -0,0 +1,165 @@
|
|||
#!/bin/bash
|
||||
# backfill-proofs.sh - Generate/upgrade OpenTimestamp proofs for all commits
|
||||
# Usage: backfill-proofs.sh [repository-path]
|
||||
|
||||
set -e
|
||||
|
||||
REPO_PATH="${1:-.}"
|
||||
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
|
||||
|
||||
cd "$REPO_PATH"
|
||||
|
||||
# Verify we're in a git repository
|
||||
if ! git rev-parse --git-dir > /dev/null 2>&1; then
|
||||
echo "Error: not a git repository" >&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# Find the generate-proof.sh script
|
||||
GENERATE_SCRIPT=""
|
||||
|
||||
# Check if generate-proof.sh is in the same directory as this script
|
||||
if [ -f "$SCRIPT_DIR/generate-proof.sh" ]; then
|
||||
GENERATE_SCRIPT="$SCRIPT_DIR/generate-proof.sh"
|
||||
# Check in repository root
|
||||
elif [ -f "generate-proof.sh" ]; then
|
||||
GENERATE_SCRIPT="./generate-proof.sh"
|
||||
# Check if skill is installed globally
|
||||
elif [ -f "$HOME/.openclaw/workspace/skills/git-ots-hook/scripts/generate-proof.sh" ]; then
|
||||
GENERATE_SCRIPT="$HOME/.openclaw/workspace/skills/git-ots-hook/scripts/generate-proof.sh"
|
||||
else
|
||||
echo "Error: generate-proof.sh not found" >&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
chmod +x "$GENERATE_SCRIPT"
|
||||
|
||||
# Ensure .ots directory exists
|
||||
mkdir -p .ots
|
||||
|
||||
# Cache file for attestation status (avoids repeated ots info calls)
|
||||
STATUS_CACHE=".ots/.attestation-cache"
|
||||
if [ ! -f "$STATUS_CACHE" ]; then
|
||||
echo "# Attestation status cache" > "$STATUS_CACHE"
|
||||
echo "# Format: commit-hash:status:timestamp" >> "$STATUS_CACHE"
|
||||
fi
|
||||
|
||||
# Function to check cached status
|
||||
get_cached_status() {
|
||||
local commit="$1"
|
||||
local cache_line=$(grep "^$commit:" "$STATUS_CACHE" 2>/dev/null | tail -1)
|
||||
if [ -n "$cache_line" ]; then
|
||||
local status=$(echo "$cache_line" | cut -d: -f2)
|
||||
local timestamp=$(echo "$cache_line" | cut -d: -f3)
|
||||
local now=$(date +%s)
|
||||
local age=$((now - timestamp))
|
||||
# Cache valid for 1 hour (3600 seconds)
|
||||
if [ "$age" -lt 3600 ]; then
|
||||
echo "$status"
|
||||
return 0
|
||||
fi
|
||||
fi
|
||||
return 1
|
||||
}
|
||||
|
||||
# Function to cache status
|
||||
cache_status() {
|
||||
local commit="$1"
|
||||
local status="$2"
|
||||
local now=$(date +%s)
|
||||
echo "$commit:$status:$now" >> "$STATUS_CACHE"
|
||||
}
|
||||
|
||||
echo "[ots-backfill] Scanning commit history..."
|
||||
|
||||
# Get all commit hashes (oldest to newest)
|
||||
COMMITS=$(git rev-list --reverse HEAD)
|
||||
TOTAL=$(echo "$COMMITS" | wc -l)
|
||||
CURRENT=0
|
||||
|
||||
# Track if any proofs were updated
|
||||
UPDATED=0
|
||||
|
||||
for COMMIT in $COMMITS; do
|
||||
CURRENT=$((CURRENT + 1))
|
||||
echo "[ots-backfill] Processing commit $CURRENT/$TOTAL: ${COMMIT:0:8}"
|
||||
|
||||
# Check if proof exists for this commit
|
||||
PROOF_FILE=".ots/${COMMIT}.ots"
|
||||
|
||||
if [ -f "$PROOF_FILE" ]; then
|
||||
# Check cached status first
|
||||
CACHED_STATUS=$(get_cached_status "$COMMIT" || echo "")
|
||||
|
||||
if [ "$CACHED_STATUS" = "attested" ]; then
|
||||
echo " ✓ Already attested (cached, skipping)"
|
||||
continue
|
||||
fi
|
||||
|
||||
# Check if already fully attested (only if not cached or cache expired)
|
||||
PENDING_COUNT=$(ots info "$PROOF_FILE" 2>&1 | grep -c "PendingAttestation" || echo "0")
|
||||
|
||||
if [ "$PENDING_COUNT" -eq 0 ]; then
|
||||
echo " ✓ Already attested"
|
||||
cache_status "$COMMIT" "attested"
|
||||
continue
|
||||
fi
|
||||
|
||||
# Cache as pending
|
||||
cache_status "$COMMIT" "pending"
|
||||
|
||||
# Skip upgrade if cache is fresh (< 10 min old)
|
||||
CACHE_LINE=$(grep "^$COMMIT:" "$STATUS_CACHE" | tail -1)
|
||||
CACHE_TIME=$(echo "$CACHE_LINE" | cut -d: -f3)
|
||||
NOW=$(date +%s)
|
||||
CACHE_AGE=$((NOW - CACHE_TIME))
|
||||
|
||||
if [ "$CACHE_AGE" -lt 600 ]; then
|
||||
echo " - Pending (cached <10min, skipping calendar call)"
|
||||
continue
|
||||
fi
|
||||
|
||||
# Try to upgrade existing proof (contacts calendars)
|
||||
echo " Upgrading pending proof..."
|
||||
if ots upgrade "$PROOF_FILE" 2>/dev/null; then
|
||||
echo " ✓ Upgraded to attested"
|
||||
cache_status "$COMMIT" "attested"
|
||||
UPDATED=$((UPDATED + 1))
|
||||
else
|
||||
echo " - Still pending (no upgrade available yet)"
|
||||
# Update cache timestamp
|
||||
cache_status "$COMMIT" "pending"
|
||||
fi
|
||||
else
|
||||
# Generate new proof for this commit
|
||||
echo " Generating new proof..."
|
||||
"$GENERATE_SCRIPT" "$COMMIT" "$PROOF_FILE" >/dev/null 2>&1
|
||||
echo " ✓ Generated proof"
|
||||
cache_status "$COMMIT" "pending"
|
||||
UPDATED=$((UPDATED + 1))
|
||||
fi
|
||||
done
|
||||
|
||||
# Create/update latest proof symlink
|
||||
LATEST_COMMIT=$(git rev-parse HEAD)
|
||||
if [ -f ".ots/${LATEST_COMMIT}.ots" ]; then
|
||||
cp ".ots/${LATEST_COMMIT}.ots" ".ots/proof.ots"
|
||||
echo "[ots-backfill] Updated .ots/proof.ots for latest commit"
|
||||
fi
|
||||
|
||||
# Save previous commit chain info
|
||||
echo "[ots-backfill] Saving commit chain..."
|
||||
git rev-list HEAD | while read COMMIT; do
|
||||
PREV=$(git rev-parse ${COMMIT}^1 2>/dev/null || echo "")
|
||||
if [ -n "$PREV" ]; then
|
||||
echo "$COMMIT:$PREV" >> ".ots/commit-chain.txt"
|
||||
fi
|
||||
done
|
||||
|
||||
echo ""
|
||||
echo "[ots-backfill] Complete! Processed $TOTAL commits, updated $UPDATED proofs"
|
||||
echo ""
|
||||
echo "Proofs stored in: .ots/"
|
||||
echo " - Individual proofs: .ots/<commit-hash>.ots"
|
||||
echo " - Latest proof: .ots/proof.ots"
|
||||
echo " - Commit chain: .ots/commit-chain.txt"
|
||||
20
scripts/check-attestation.sh
Executable file
20
scripts/check-attestation.sh
Executable file
|
|
@ -0,0 +1,20 @@
|
|||
#!/bin/bash
|
||||
# check-attestation.sh - Check if an OpenTimestamp proof is fully attested
|
||||
# Usage: check-attestation.sh <proof-file>
|
||||
# Returns: 0 if fully attested, 1 if pending
|
||||
|
||||
PROOF_FILE="${1:-}"
|
||||
|
||||
if [ -z "$PROOF_FILE" ] || [ ! -f "$PROOF_FILE" ]; then
|
||||
echo "Error: proof file not found: $PROOF_FILE" >&2
|
||||
exit 2
|
||||
fi
|
||||
|
||||
# Check for PendingAttestation in ots info output
|
||||
if ots info "$PROOF_FILE" 2>&1 | grep -q "PendingAttestation"; then
|
||||
echo "pending"
|
||||
exit 1
|
||||
else
|
||||
echo "attested"
|
||||
exit 0
|
||||
fi
|
||||
114
scripts/generate-proof.sh
Executable file
114
scripts/generate-proof.sh
Executable file
|
|
@ -0,0 +1,114 @@
|
|||
#!/bin/bash
|
||||
# generate-proof.sh - Generate OpenTimestamp proof for a git commit
|
||||
# Usage: generate-proof.sh <commit-hash> [output-file]
|
||||
|
||||
set -e
|
||||
|
||||
COMMIT_HASH="${1:-}"
|
||||
OUTPUT_FILE="${2:-.ots/proof.ots}"
|
||||
|
||||
if [ -z "$COMMIT_HASH" ]; then
|
||||
echo "Error: commit hash required" >&2
|
||||
echo "Usage: $0 <commit-hash> [output-file]" >&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# Ensure .ots directory exists
|
||||
mkdir -p "$(dirname "$OUTPUT_FILE")"
|
||||
|
||||
# Function to generate proof using ots CLI
|
||||
generate_with_ots_cli() {
|
||||
local hash="$1"
|
||||
local output="$2"
|
||||
|
||||
# Create a temporary file with the hash (convert hex to binary)
|
||||
local temp_file=$(mktemp)
|
||||
local temp_ots="${temp_file}.ots"
|
||||
|
||||
# Use python3 for hex to binary conversion (more portable than xxd)
|
||||
python3 -c "import sys; sys.stdout.buffer.write(bytes.fromhex('$hash'))" > "$temp_file"
|
||||
|
||||
# Generate timestamp - ots creates .ots file alongside the original
|
||||
ots stamp "$temp_file"
|
||||
|
||||
# Move the generated .ots file to the desired location
|
||||
if [ -f "$temp_ots" ]; then
|
||||
mkdir -p "$(dirname "$output")"
|
||||
mv "$temp_ots" "$output"
|
||||
echo "Generated proof with ots CLI: $output"
|
||||
else
|
||||
echo "Error: ots did not generate proof file" >&2
|
||||
rm -f "$temp_file"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# Cleanup
|
||||
rm -f "$temp_file"
|
||||
}
|
||||
|
||||
# Function to generate proof using opentimestamps-nodejs
|
||||
generate_with_node() {
|
||||
local hash="$1"
|
||||
local output="$2"
|
||||
|
||||
# Use nodejs opentimestamps library
|
||||
# This requires @opentimestamps/ots to be installed globally
|
||||
node -e "
|
||||
const ots = require('@opentimestamps/ots');
|
||||
const fs = require('fs');
|
||||
const crypto = require('crypto');
|
||||
|
||||
const hash = '$hash';
|
||||
const output = '$output';
|
||||
|
||||
// Convert hex hash to buffer
|
||||
const hashBuffer = Buffer.from(hash, 'hex');
|
||||
|
||||
// Create timestamp
|
||||
ots.Timestamp.hash(hashBuffer).then(timestamp => {
|
||||
// In a real implementation, this would contact the calendar server
|
||||
// For now, we create a minimal proof structure
|
||||
console.log('Warning: nodejs fallback creates local proof only');
|
||||
console.log('Install ots CLI for full functionality: https://github.com/opentimestamps/opentimestamps-client');
|
||||
|
||||
// Create a simple proof file (this is a placeholder - real impl needs calendar)
|
||||
const proof = {
|
||||
hash: hash,
|
||||
timestamp: new Date().toISOString(),
|
||||
status: 'pending'
|
||||
};
|
||||
|
||||
fs.writeFileSync(output, JSON.stringify(proof, null, 2));
|
||||
console.log('Generated local proof: ' + output);
|
||||
}).catch(err => {
|
||||
console.error('Error generating timestamp:', err);
|
||||
process.exit(1);
|
||||
});
|
||||
"
|
||||
}
|
||||
|
||||
# Check if ots CLI is available
|
||||
if command -v ots &> /dev/null; then
|
||||
echo "Using ots CLI..."
|
||||
generate_with_ots_cli "$COMMIT_HASH" "$OUTPUT_FILE"
|
||||
elif command -v node &> /dev/null && node -e "require('@opentimestamps/ots')" &> /dev/null; then
|
||||
echo "Using opentimestamps-nodejs fallback..."
|
||||
generate_with_node "$COMMIT_HASH" "$OUTPUT_FILE"
|
||||
else
|
||||
echo "Error: Neither ots CLI nor @opentimestamps/ots node package found" >&2
|
||||
echo "Install one of:" >&2
|
||||
echo " - ots CLI: https://github.com/opentimestamps/opentimestamps-client" >&2
|
||||
echo " - Node package: npm install -g @opentimestamps/ots" >&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# Get previous commit hash for chaining (before appending to proof file)
|
||||
PREV_COMMIT=$(git rev-parse HEAD^1 2>/dev/null || echo "")
|
||||
|
||||
# Store previous commit hash in a separate metadata file for chaining
|
||||
if [ -n "$PREV_COMMIT" ]; then
|
||||
echo "$PREV_COMMIT" > "$(dirname "$OUTPUT_FILE")/prev-commit.txt"
|
||||
echo "Chaining info saved: $PREV_COMMIT"
|
||||
fi
|
||||
|
||||
echo "Proof generated for commit: $COMMIT_HASH"
|
||||
98
scripts/install-ots-hook.sh
Executable file
98
scripts/install-ots-hook.sh
Executable file
|
|
@ -0,0 +1,98 @@
|
|||
#!/bin/bash
|
||||
# install-ots-hook.sh - Install OpenTimestamp post-commit hook
|
||||
# Usage: install-ots-hook.sh [repository-path] [backfill]
|
||||
|
||||
set -e
|
||||
|
||||
REPO_PATH="${1:-.}"
|
||||
ENABLE_BACKFILL="${2:-}" # Second arg: "backfill" to enable pre-commit backfill hook
|
||||
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
|
||||
|
||||
cd "$REPO_PATH"
|
||||
|
||||
# Verify we're in a git repository
|
||||
if ! git rev-parse --git-dir > /dev/null 2>&1; then
|
||||
echo "Error: not a git repository" >&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
HOOKS_DIR="$(git rev-parse --git-dir)/hooks"
|
||||
POST_COMMIT_HOOK="$HOOKS_DIR/post-commit"
|
||||
|
||||
echo "Installing OpenTimestamp hooks in: $REPO_PATH"
|
||||
|
||||
# Create the post-commit hook
|
||||
cat > "$POST_COMMIT_HOOK" << 'HOOK_SCRIPT'
|
||||
#!/bin/bash
|
||||
# Post-commit hook: generate OpenTimestamp proof for each commit
|
||||
|
||||
set -e
|
||||
|
||||
# Get the commit hash
|
||||
COMMIT_HASH=$(git rev-parse HEAD)
|
||||
|
||||
# Find the generate-proof.sh script
|
||||
# Try relative paths first, then check common locations
|
||||
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
|
||||
GENERATE_SCRIPT=""
|
||||
|
||||
# Check if generate-proof.sh is in the same directory as this hook
|
||||
if [ -f "$SCRIPT_DIR/generate-proof.sh" ]; then
|
||||
GENERATE_SCRIPT="$SCRIPT_DIR/generate-proof.sh"
|
||||
# Check in .git/hooks directory
|
||||
elif [ -f ".git/hooks/generate-proof.sh" ]; then
|
||||
GENERATE_SCRIPT=".git/hooks/generate-proof.sh"
|
||||
# Check in repository root
|
||||
elif [ -f "generate-proof.sh" ]; then
|
||||
GENERATE_SCRIPT="./generate-proof.sh"
|
||||
# Check if skill is installed globally (common OpenClaw path)
|
||||
elif [ -f "$HOME/.openclaw/workspace/skills/git-ots-hook/scripts/generate-proof.sh" ]; then
|
||||
GENERATE_SCRIPT="$HOME/.openclaw/workspace/skills/git-ots-hook/scripts/generate-proof.sh"
|
||||
else
|
||||
echo "Warning: generate-proof.sh not found, skipping OpenTimestamp proof" >&2
|
||||
exit 0
|
||||
fi
|
||||
|
||||
# Make sure the script is executable
|
||||
chmod +x "$GENERATE_SCRIPT"
|
||||
|
||||
# Generate the proof
|
||||
echo "[ots] Generating proof for commit: $COMMIT_HASH"
|
||||
"$GENERATE_SCRIPT" "$COMMIT_HASH"
|
||||
|
||||
echo "[ots] Proof generated successfully"
|
||||
HOOK_SCRIPT
|
||||
|
||||
# Make the hook executable
|
||||
chmod +x "$POST_COMMIT_HOOK"
|
||||
|
||||
echo "✓ Post-commit hook installed successfully"
|
||||
|
||||
# Optionally install pre-commit backfill hook
|
||||
if [ "$ENABLE_BACKFILL" = "backfill" ]; then
|
||||
PRE_COMMIT_HOOK="$HOOKS_DIR/pre-commit"
|
||||
cp "$SCRIPT_DIR/pre-commit-backfill" "$PRE_COMMIT_HOOK"
|
||||
chmod +x "$PRE_COMMIT_HOOK"
|
||||
echo "✓ Pre-commit backfill hook installed (will backfill proofs before each commit)"
|
||||
fi
|
||||
|
||||
# Optionally setup .gitignore
|
||||
if [ -f "$SCRIPT_DIR/setup-gitignore.sh" ]; then
|
||||
"$SCRIPT_DIR/setup-gitignore.sh" "$REPO_PATH"
|
||||
elif [ -f "$HOME/.openclaw/workspace/skills/git-ots-hook/scripts/setup-gitignore.sh" ]; then
|
||||
"$HOME/.openclaw/workspace/skills/git-ots-hook/scripts/setup-gitignore.sh" "$REPO_PATH"
|
||||
fi
|
||||
|
||||
echo ""
|
||||
echo "Next steps:"
|
||||
echo "1. Ensure scripts are accessible (copy to repo root or install skill globally)"
|
||||
echo "2. Verify ots CLI or @opentimestamps/ots is installed"
|
||||
echo "3. Add .ots/ to git tracking: git add .ots/"
|
||||
echo "4. Commit proofs: git commit -m 'Add OpenTimestamp proofs'"
|
||||
echo "5. Make a test commit to verify the hooks work"
|
||||
echo ""
|
||||
echo "To uninstall:"
|
||||
echo " rm $POST_COMMIT_HOOK"
|
||||
if [ "$ENABLE_BACKFILL" = "backfill" ]; then
|
||||
echo " rm $PRE_COMMIT_HOOK"
|
||||
fi
|
||||
32
scripts/pre-commit-backfill
Executable file
32
scripts/pre-commit-backfill
Executable file
|
|
@ -0,0 +1,32 @@
|
|||
#!/bin/bash
|
||||
# Pre-commit hook: backfill proofs for all commits before creating new commit
|
||||
# This ensures all historical commits have attested proofs
|
||||
|
||||
set -e
|
||||
|
||||
# Get the directory where this hook is installed
|
||||
HOOKS_DIR="$(git rev-parse --git-dir)/hooks"
|
||||
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
|
||||
|
||||
# Find the backfill-proofs.sh script
|
||||
BACKFILL_SCRIPT=""
|
||||
|
||||
if [ -f "$SCRIPT_DIR/backfill-proofs.sh" ]; then
|
||||
BACKFILL_SCRIPT="$SCRIPT_DIR/backfill-proofs.sh"
|
||||
elif [ -f ".git/hooks/backfill-proofs.sh" ]; then
|
||||
BACKFILL_SCRIPT=".git/hooks/backfill-proofs.sh"
|
||||
elif [ -f "backfill-proofs.sh" ]; then
|
||||
BACKFILL_SCRIPT="./backfill-proofs.sh"
|
||||
elif [ -f "$HOME/.openclaw/workspace/skills/git-ots-hook/scripts/backfill-proofs.sh" ]; then
|
||||
BACKFILL_SCRIPT="$HOME/.openclaw/workspace/skills/git-ots-hook/scripts/backfill-proofs.sh"
|
||||
else
|
||||
# Silently skip if backfill script not found
|
||||
exit 0
|
||||
fi
|
||||
|
||||
chmod +x "$BACKFILL_SCRIPT"
|
||||
|
||||
echo "[ots] Backfilling proofs before commit..."
|
||||
"$BACKFILL_SCRIPT" .
|
||||
|
||||
echo "[ots] Ready to commit"
|
||||
41
scripts/setup-gitignore.sh
Executable file
41
scripts/setup-gitignore.sh
Executable file
|
|
@ -0,0 +1,41 @@
|
|||
#!/bin/bash
|
||||
# setup-gitignore.sh - Create/update .gitignore for OpenTimestamp proofs
|
||||
# Usage: setup-gitignore.sh [repository-path]
|
||||
|
||||
set -e
|
||||
|
||||
REPO_PATH="${1:-.}"
|
||||
|
||||
cd "$REPO_PATH"
|
||||
|
||||
# Verify we're in a git repository
|
||||
if ! git rev-parse --git-dir > /dev/null 2>&1; then
|
||||
echo "Error: not a git repository" >&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
GITIGNORE=".gitignore"
|
||||
|
||||
# Create .gitignore if it doesn't exist
|
||||
if [ ! -f "$GITIGNORE" ]; then
|
||||
echo "# OpenTimestamp proofs cache (exclude from version control)" > "$GITIGNORE"
|
||||
echo ".ots/.attestation-cache" >> "$GITIGNORE"
|
||||
echo ""
|
||||
echo "Created $GITIGNORE with OpenTimestamp cache exclusion"
|
||||
else
|
||||
# Check if already has the cache exclusion
|
||||
if grep -q ".ots/.attestation-cache" "$GITIGNORE"; then
|
||||
echo "$GITIGNORE already excludes .ots/.attestation-cache"
|
||||
else
|
||||
echo "" >> "$GITIGNORE"
|
||||
echo "# OpenTimestamp proofs cache (exclude from version control)" >> "$GITIGNORE"
|
||||
echo ".ots/.attestation-cache" >> "$GITIGNORE"
|
||||
echo "Added .ots/.attestation-cache to $GITIGNORE"
|
||||
fi
|
||||
fi
|
||||
|
||||
echo ""
|
||||
echo "Next steps:"
|
||||
echo "1. Review and commit your .gitignore"
|
||||
echo "2. Add .ots/ directory to track proofs: git add .ots/"
|
||||
echo "3. Commit proofs: git commit -m 'Add OpenTimestamp proofs'"
|
||||
Loading…
Add table
Add a link
Reference in a new issue