diff --git a/.gitignore b/.gitignore
deleted file mode 100644
index a8e2c1a..0000000
--- a/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-.ots/.attestation-cache
diff --git a/.ots/.attestation-cache b/.ots/.attestation-cache
index 43d2019..aa496dc 100644
--- a/.ots/.attestation-cache
+++ b/.ots/.attestation-cache
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diff --git a/.ots/02143e59edb79ecf121c99f4518ad232625f5df6.ots b/.ots/02143e59edb79ecf121c99f4518ad232625f5df6.ots
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index 9ed45da..0000000
Binary files a/.ots/02143e59edb79ecf121c99f4518ad232625f5df6.ots and /dev/null differ
diff --git a/.ots/094cd5386431eb9d1fe1335c591452ba0b66cb6e.ots b/.ots/094cd5386431eb9d1fe1335c591452ba0b66cb6e.ots
deleted file mode 100644
index d9ae0cc..0000000
Binary files a/.ots/094cd5386431eb9d1fe1335c591452ba0b66cb6e.ots and /dev/null differ
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deleted file mode 100644
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Binary files a/.ots/4bf5ab21764bc9a4507e25e0bc8de2989d4febad.ots and /dev/null differ
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deleted file mode 100644
index fb8e56e..0000000
Binary files a/.ots/6dc83992382d17c347a30c823204646d02750fc5.ots and /dev/null differ
diff --git a/.ots/a7c0f825be4491ecec199ca7b983ee46525853e5.ots b/.ots/a7c0f825be4491ecec199ca7b983ee46525853e5.ots
deleted file mode 100644
index 0289f66..0000000
Binary files a/.ots/a7c0f825be4491ecec199ca7b983ee46525853e5.ots and /dev/null differ
diff --git a/.ots/commit-chain.txt b/.ots/commit-chain.txt
index c171f72..5c48dc5 100644
--- a/.ots/commit-chain.txt
+++ b/.ots/commit-chain.txt
@@ -1,9 +1,25 @@
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diff --git a/.ots/e2d0ff03529b0a34146dbd97c3ebbb2b2f6d1faa.ots b/.ots/e2d0ff03529b0a34146dbd97c3ebbb2b2f6d1faa.ots
deleted file mode 100644
index 57a6104..0000000
Binary files a/.ots/e2d0ff03529b0a34146dbd97c3ebbb2b2f6d1faa.ots and /dev/null differ
diff --git a/.ots/f4eb0ad6782d2bc003206521cc66ea370dcccd9f.ots b/.ots/f4eb0ad6782d2bc003206521cc66ea370dcccd9f.ots
deleted file mode 100644
index cebc5f6..0000000
Binary files a/.ots/f4eb0ad6782d2bc003206521cc66ea370dcccd9f.ots and /dev/null differ
diff --git a/.ots/prev-commit.txt b/.ots/prev-commit.txt
index c772ba4..abca7dd 100644
--- a/.ots/prev-commit.txt
+++ b/.ots/prev-commit.txt
@@ -1 +1 @@
-094cd5386431eb9d1fe1335c591452ba0b66cb6e
+ed2cd259e918344c5a21ecf884b3178b4256ea74
diff --git a/.ots/proof.ots b/.ots/proof.ots
index fb8e56e..4da399d 100644
Binary files a/.ots/proof.ots and b/.ots/proof.ots differ
diff --git a/UNIFICATION_PLAN.md b/UNIFICATION_PLAN.md
deleted file mode 100644
index 7d35598..0000000
--- a/UNIFICATION_PLAN.md
+++ /dev/null
@@ -1,208 +0,0 @@
-# Git Hooks Unification Plan
-
-## Goal
-
-Consolidate the current multi-script architecture into standard, self-contained git hook files that can be installed directly without external dependencies.
-
-## Current Architecture
-
-```
-scripts/
-├── generate-proof.sh      # Core proof generation logic
-├── backfill-proofs.sh     # History scanning + upgrade
-├── install-ots-hook.sh    # Installer script
-├── pre-commit-backfill    # Pre-commit hook wrapper
-├── check-attestation.sh   # Status checker
-└── setup-gitignore.sh     # Gitignore helper
-```
-
-**Problems:**
-- Hooks depend on external scripts in repo root or global paths
-- Multiple files to manage and copy
-- Path resolution logic is fragile
-- Hard to install manually
-
-## Target Architecture
-
-```
-hooks/
-├── post-commit        # Self-contained post-commit hook
-├── pre-commit         # Self-contained pre-commit backfill hook
-└── install.sh         # Simple installer (copies hooks)
-```
-
-Each hook file contains all necessary logic inline - no external dependencies.
-
-## Implementation Plan
-
-### Phase 1: Create Self-Contained Hooks
-
-#### `hooks/post-commit`
-
-Inline the entire `generate-proof.sh` logic:
-
-```bash
-#!/bin/bash
-# Self-contained post-commit hook
-
-set -e
-
-COMMIT_HASH=$(git rev-parse HEAD)
-OUTPUT_FILE=".ots/proof.ots"
-mkdir -p "$(dirname "$OUTPUT_FILE")"
-
-# Inline: generate_with_ots_cli()
-temp_file=$(mktemp)
-temp_ots="${temp_file}.ots"
-python3 -c "import sys; sys.stdout.buffer.write(bytes.fromhex('$COMMIT_HASH'))" > "$temp_file"
-ots stamp "$temp_file"
-if [ -f "$temp_ots" ]; then
-    mv "$temp_ots" "$OUTPUT_FILE"
-    rm -f "$temp_file"
-fi
-
-# Inline: get previous commit
-PREV_COMMIT=$(git rev-parse HEAD^1 2>/dev/null || echo "")
-if [ -n "$PREV_COMMIT" ]; then
-    echo "$PREV_COMMIT" > ".ots/prev-commit.txt"
-fi
-
-echo "[ots] Proof generated: ${COMMIT_HASH:0:8}"
-```
-
-#### `hooks/pre-commit`
-
-Inline the entire `backfill-proofs.sh` logic:
-
-```bash
-#!/bin/bash
-# Self-contained pre-commit backfill hook
-
-set -e
-
-# Inline: cache functions
-get_cached_status() { ... }
-cache_status() { ... }
-
-# Inline: main loop
-COMMITS=$(git rev-list --reverse HEAD)
-for COMMIT in $COMMITS; do
-    PROOF_FILE=".ots/${COMMIT}.ots"
-    if [ -f "$PROOF_FILE" ]; then
-        # Check cache, skip if attested
-        # Upgrade if pending and cache expired
-    else
-        # Generate proof inline
-    fi
-done
-```
-
-### Phase 2: Simplify Installer
-
-#### `hooks/install.sh`
-
-```bash
-#!/bin/bash
-# Simple installer - just copies hooks
-
-REPO_PATH="${1:-.}"
-HOOKS_DIR="$(cd "$REPO_PATH" && git rev-parse --git-dir)/hooks"
-
-echo "Installing OTS hooks to: $HOOKS_DIR"
-
-cp "$(dirname "$0")/post-commit" "$HOOKS_DIR/post-commit"
-cp "$(dirname "$0")/pre-commit" "$HOOKS_DIR/pre-commit"
-
-chmod +x "$HOOKS_DIR/post-commit" "$HOOKS_DIR/pre-commit"
-
-echo "✓ Hooks installed"
-```
-
-### Phase 3: Migration Path
-
-1. **Keep current scripts** in `scripts/` for backward compatibility
-2. **Add new `hooks/`** directory with unified hooks
-3. **Update SKILL.md** to recommend new hooks
-4. **Deprecate old scripts** (add deprecation warnings)
-5. **Eventually remove** old scripts in next major version
-
-## Benefits
-
-| Aspect | Before | After |
-|--------|--------|-------|
-| Files to install | 6 scripts | 2 hooks + installer |
-| External dependencies | Yes (scripts in root) | No (self-contained) |
-| Manual installation | Complex (path resolution) | Simple (copy 2 files) |
-| Debugging | Hard (multiple files) | Easy (single file per hook) |
-| Portability | Low (path-dependent) | High (drop-in) |
-
-## Trade-offs
-
-**Pros:**
-- Simpler installation
-- No path resolution logic
-- Easier to understand (single file = single responsibility)
-- Better for manual installation
-
-**Cons:**
-- Code duplication (generate-proof logic in both hooks)
-- Larger hook files (~200-300 lines each)
-- Harder to update (must update multiple files)
-
-## Mitigation
-
-- Extract shared functions into a sourced library: `hooks/.ots-lib.sh`
-- Hooks source the library: `source "$(dirname "$0")/.ots-lib.sh"`
-- Library is installed alongside hooks
-
-## Revised Architecture (with Library)
-
-```
-hooks/
-├── .ots-lib.sh      # Shared functions (generate_proof, check_attested, etc.)
-├── post-commit      # Sources library, calls generate_proof()
-├── pre-commit       # Sources library, calls backfill_history()
-└── install.sh       # Copies all files
-```
-
-## Next Steps
-
-1. [ ] Create `hooks/.ots-lib.sh` with extracted functions
-2. [ ] Create `hooks/post-commit` using library
-3. [ ] Create `hooks/pre-commit` using library
-4. [ ] Create `hooks/install.sh`
-5. [ ] Test on git-timestamps-test repo
-6. [ ] Update documentation
-7. [ ] Deprecate old `scripts/` directory
-
-## Timeline
-
-- Phase 1 (Library + Hooks): 1-2 hours
-- Phase 2 (Testing): 30 min
-- Phase 3 (Documentation): 30 min
-- **Total**: ~3 hours
-
----
-
-**Branch**: `git-scripts`  
-**Created**: 2026-03-07  
-**Status**: ✅ Complete
-
-## Implementation Complete
-
-Created self-contained hooks without shared library:
-
-```
-hooks/
-├── post-commit      # 2.8KB - Full proof generation inline
-├── pre-commit       # 4.3KB - Full backfill logic inline
-└── install.sh       # 1.3KB - Simple copier
-```
-
-**Test results:**
-- Commit time: ~14s (11 commits, cached status)
-- All proofs generated/upgraded correctly
-- No external script dependencies
-- Single-file installation
-
-**Next:** Copy to skill directory and update documentation.
diff --git a/hooks/install.sh b/hooks/install.sh
deleted file mode 100755
index 3de1a6e..0000000
--- a/hooks/install.sh
+++ /dev/null
@@ -1,93 +0,0 @@
-#!/bin/bash
-# Git OpenTimestamp Hooks Installer
-# Detects available tools and installs matching hooks
-
-set -e
-
-REPO_PATH="${1:-.}"
-SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
-
-cd "$REPO_PATH"
-
-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"
-MODE=""
-
-# Detect available tools
-if command -v ots &> /dev/null; then
-    MODE="ots"
-    echo "Detected: ots CLI"
-elif command -v node &> /dev/null && node -e "require('@opentimestamps/ots')" &> /dev/null 2>&1; then
-    MODE="node"
-    echo "Detected: @opentimestamps/ots (Node.js)"
-    echo "Note: Node version creates local proofs only (no calendar submission)"
-    echo ""
-    
-    # Install node package locally if not already present
-    if [ ! -d "node_modules/@opentimestamps" ]; then
-        echo "Installing @opentimestamps/ots locally..."
-        npm install @opentimestamps/ots
-        echo "✓ Package installed"
-    fi
-else
-    echo "Error: Neither ots CLI nor @opentimestamps/ots found" >&2
-    echo "Install one of:" >&2
-    echo "  pipx install opentimestamps-client  (recommended)" >&2
-    echo "  npm install @opentimestamps/ots     (local proofs only)" >&2
-    exit 1
-fi
-
-echo ""
-echo "Installing $MODE hooks to: $HOOKS_DIR"
-
-# Copy appropriate hooks
-if [ "$MODE" = "ots" ]; then
-    cp "$SCRIPT_DIR/post-commit-ots" "$HOOKS_DIR/post-commit"
-    cp "$SCRIPT_DIR/pre-commit-ots" "$HOOKS_DIR/pre-commit"
-else
-    cp "$SCRIPT_DIR/post-commit-node" "$HOOKS_DIR/post-commit"
-    cp "$SCRIPT_DIR/pre-commit-node" "$HOOKS_DIR/pre-commit"
-fi
-
-chmod +x "$HOOKS_DIR/post-commit" "$HOOKS_DIR/pre-commit"
-
-echo "✓ Post-commit hook installed"
-echo "✓ Pre-commit backfill hook installed"
-
-# Setup .gitignore
-GITIGNORE=".gitignore"
-if [ ! -f "$GITIGNORE" ]; then
-    cat > "$GITIGNORE" << 'EOF'
-.ots/.attestation-cache
-node_modules/
-EOF
-    echo "✓ Created .gitignore"
-elif ! grep -q ".ots/.attestation-cache" "$GITIGNORE"; then
-    echo ".ots/.attestation-cache" >> "$GITIGNORE"
-    if [ "$MODE" = "node" ] && ! grep -q "node_modules/" "$GITIGNORE"; then
-        echo "node_modules/" >> "$GITIGNORE"
-    fi
-    echo "✓ Updated .gitignore"
-fi
-
-echo ""
-echo "Mode: $MODE"
-if [ "$MODE" = "ots" ]; then
-    echo "  - Full Bitcoin attestation via calendars"
-    echo "  - Proofs submitted to remote calendars"
-else
-    echo "  - Local proofs only (no calendar submission)"
-    echo "  - For full attestation, use: pipx install opentimestamps-client"
-fi
-
-echo ""
-echo "Next steps:"
-echo "1. Make a test commit"
-echo "2. Commit proofs: git add .ots/ && git commit -m 'Add OpenTimestamp proofs'"
-echo ""
-echo "To uninstall:"
-echo "  rm $HOOKS_DIR/post-commit $HOOKS_DIR/pre-commit"
diff --git a/hooks/post-commit b/hooks/post-commit
deleted file mode 100755
index 044dfe3..0000000
--- a/hooks/post-commit
+++ /dev/null
@@ -1,91 +0,0 @@
-#!/bin/bash
-# Git OpenTimestamp Post-Commit Hook
-# Self-contained - no external dependencies
-# Generates cryptographic proof for each commit using OpenTimestamp
-
-set -e
-
-# Configuration
-OUTPUT_DIR=".ots"
-OUTPUT_FILE="$OUTPUT_DIR/proof.ots"
-
-# Ensure output directory exists
-mkdir -p "$OUTPUT_DIR"
-
-# Get the current commit hash
-COMMIT_HASH=$(git rev-parse HEAD)
-
-# 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" 2>/dev/null
-    
-    # Move the generated .ots file to the desired location
-    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 generate proof using nodejs fallback
-generate_with_node() {
-    local hash="$1"
-    local output="$2"
-    
-    node -e "
-const ots = require('@opentimestamps/ots');
-const fs = require('fs');
-const hash = '$hash';
-const output = '$output';
-const hashBuffer = Buffer.from(hash, 'hex');
-ots.Timestamp.hash(hashBuffer).then(timestamp => {
-    const proof = { hash: hash, timestamp: new Date().toISOString(), status: 'pending' };
-    fs.writeFileSync(output, JSON.stringify(proof, null, 2));
-    console.log('Generated local proof (nodejs fallback)');
-}).catch(err => { console.error('Error:', err); process.exit(1); });
-"
-}
-
-# Check for available tools and generate proof
-if command -v ots &> /dev/null; then
-    if generate_with_ots_cli "$COMMIT_HASH" "$OUTPUT_FILE"; then
-        echo "[ots] Generated proof with ots CLI: ${COMMIT_HASH:0:8}"
-    else
-        echo "[ots] Warning: ots CLI failed" >&2
-        exit 0
-    fi
-elif command -v node &> /dev/null && node -e "require('@opentimestamps/ots')" &> /dev/null 2>&1; then
-    generate_with_node "$COMMIT_HASH" "$OUTPUT_FILE"
-    echo "[ots] Generated proof with nodejs fallback: ${COMMIT_HASH:0:8}"
-else
-    echo "[ots] Warning: Neither ots CLI nor @opentimestamps/ots found, skipping proof" >&2
-    exit 0
-fi
-
-# Save previous commit hash for chaining
-PREV_COMMIT=$(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"
diff --git a/hooks/post-commit-node b/hooks/post-commit-node
deleted file mode 100755
index 06bb92b..0000000
--- a/hooks/post-commit-node
+++ /dev/null
@@ -1,49 +0,0 @@
-#!/bin/bash
-# Git OpenTimestamp Post-Commit Hook (Node.js version)
-# Requires: @opentimestamps/ots (npm install)
-
-set -e
-
-OUTPUT_DIR=".ots"
-OUTPUT_FILE="$OUTPUT_DIR/proof.ots"
-
-mkdir -p "$OUTPUT_DIR"
-
-COMMIT_HASH=$(git rev-parse HEAD)
-
-# Generate proof using Node.js
-node -e "
-const ots = require('@opentimestamps/ots');
-const fs = require('fs');
-const hash = '$COMMIT_HASH';
-const output = '$OUTPUT_FILE';
-const hashBuffer = Buffer.from(hash, 'hex');
-
-ots.Timestamp.hash(hashBuffer).then(timestamp => {
-    // Note: This creates a local proof only, not submitted to calendars
-    // For full Bitcoin attestation, use the ots CLI version
-    const proof = {
-        hash: hash,
-        timestamp: new Date().toISOString(),
-        status: 'pending',
-        note: 'Local proof only - use ots CLI for calendar submission'
-    };
-    fs.writeFileSync(output, JSON.stringify(proof, null, 2));
-    console.log('[ots-node] Generated local proof: ' + hash.substring(0, 8));
-}).catch(err => {
-    console.error('[ots-node] Error:', err.message);
-    process.exit(1);
-});
-"
-
-# Save previous commit for chaining
-PREV_COMMIT=$(git rev-parse HEAD^1 2>/dev/null || echo "")
-if [ -n "$PREV_COMMIT" ]; then
-    echo "$PREV_COMMIT" > "$OUTPUT_DIR/prev-commit.txt"
-fi
-
-# Create individual proof file (JSON format for node version)
-INDIVIDUAL_PROOF="$OUTPUT_DIR/${COMMIT_HASH}.ots"
-cp "$OUTPUT_FILE" "$INDIVIDUAL_PROOF"
-
-echo "[ots-node] Proof generated successfully"
diff --git a/hooks/post-commit-ots b/hooks/post-commit-ots
deleted file mode 100755
index 776cc89..0000000
--- a/hooks/post-commit-ots
+++ /dev/null
@@ -1,41 +0,0 @@
-#!/bin/bash
-# Git OpenTimestamp Post-Commit Hook (ots CLI version)
-# Requires: opentimestamps-client (pipx install opentimestamps-client)
-
-set -e
-
-OUTPUT_DIR=".ots"
-OUTPUT_FILE="$OUTPUT_DIR/proof.ots"
-
-mkdir -p "$OUTPUT_DIR"
-
-COMMIT_HASH=$(git rev-parse HEAD)
-
-# Generate proof using ots CLI
-temp_file=$(mktemp)
-temp_ots="${temp_file}.ots"
-
-python3 -c "import sys; sys.stdout.buffer.write(bytes.fromhex('$COMMIT_HASH'))" > "$temp_file"
-ots stamp "$temp_file" 2>/dev/null
-
-if [ -f "$temp_ots" ]; then
-    mv "$temp_ots" "$OUTPUT_FILE"
-    rm -f "$temp_file"
-    echo "[ots] Generated proof: ${COMMIT_HASH:0:8}"
-else
-    rm -f "$temp_file"
-    echo "[ots] Warning: Failed to generate proof" >&2
-    exit 0
-fi
-
-# Save previous commit 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
-INDIVIDUAL_PROOF="$OUTPUT_DIR/${COMMIT_HASH}.ots"
-cp "$OUTPUT_FILE" "$INDIVIDUAL_PROOF"
-
-echo "[ots] Proof generated successfully"
diff --git a/hooks/pre-commit b/hooks/pre-commit
deleted file mode 100755
index 9337782..0000000
--- a/hooks/pre-commit
+++ /dev/null
@@ -1,156 +0,0 @@
-#!/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: $UPDATED proofs updated"
diff --git a/hooks/pre-commit-node b/hooks/pre-commit-node
deleted file mode 100755
index 76d033e..0000000
--- a/hooks/pre-commit-node
+++ /dev/null
@@ -1,100 +0,0 @@
-#!/bin/bash
-# Git OpenTimestamp Pre-Commit Backfill Hook (Node.js version)
-# Requires: @opentimestamps/ots (npm install)
-# Note: Node version only generates local proofs, no calendar submission
-
-set -e
-
-OUTPUT_DIR=".ots"
-STATUS_CACHE="$OUTPUT_DIR/.attestation-cache"
-
-mkdir -p "$OUTPUT_DIR"
-
-# Initialize cache
-if [ ! -f "$STATUS_CACHE" ]; then
-    echo "# Format: commit-hash:status:timestamp" > "$STATUS_CACHE"
-fi
-
-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)
-        if [ "$((now - timestamp))" -lt 3600 ]; then
-            echo "$status"
-            return 0
-        fi
-    fi
-    return 1
-}
-
-cache_status() {
-    local commit="$1"
-    local status="$2"
-    echo "$commit:$status:$(date +%s)" >> "$STATUS_CACHE"
-}
-
-generate_proof_node() {
-    local hash="$1"
-    local output="$2"
-    
-    node -e "
-const ots = require('@opentimestamps/ots');
-const fs = require('fs');
-const hash = '$hash';
-const output = '$output';
-const hashBuffer = Buffer.from(hash, 'hex');
-
-ots.Timestamp.hash(hashBuffer).then(timestamp => {
-    const proof = { hash: hash, timestamp: new Date().toISOString(), status: 'pending' };
-    fs.writeFileSync(output, JSON.stringify(proof, null, 2));
-}).catch(err => { console.error('Error:', err); process.exit(1); });
-"
-}
-
-echo "[ots-node] Backfilling proofs (local only, no calendar)..."
-
-COMMITS=$(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"
-    
-    if [ $CURRENT -le 3 ] || [ $CURRENT -eq $TOTAL ]; then
-        echo "[ots-node] Processing $CURRENT/$TOTAL: ${COMMIT:0:8}"
-    elif [ $CURRENT -eq 4 ]; then
-        echo "[ots-node] ... processing remaining ..."
-    fi
-    
-    if [ -f "$PROOF_FILE" ]; then
-        # Node version doesn't support upgrade, just check cache
-        CACHED_STATUS=$(get_cached_status "$COMMIT" || echo "")
-        [ "$CACHED_STATUS" = "attested" ] && continue
-        
-        # Mark as pending (node can't attest)
-        cache_status "$COMMIT" "pending"
-    else
-        if generate_proof_node "$COMMIT" "$PROOF_FILE"; then
-            cache_status "$COMMIT" "pending"
-            UPDATED=$((UPDATED + 1))
-        fi
-    fi
-done
-
-# Update latest proof
-LATEST_COMMIT=$(git rev-parse HEAD)
-[ -f "$OUTPUT_DIR/${LATEST_COMMIT}.ots" ] && cp "$OUTPUT_DIR/${LATEST_COMMIT}.ots" "$OUTPUT_DIR/proof.ots"
-
-# Save commit chain
-rm -f "$OUTPUT_DIR/commit-chain.txt"
-git rev-list HEAD | while read COMMIT; do
-    PREV=$(git rev-parse ${COMMIT}^1 2>/dev/null || echo "")
-    [ -n "$PREV" ] && echo "$COMMIT:$PREV" >> "$OUTPUT_DIR/commit-chain.txt"
-done
-
-echo "[ots-node] Backfill complete: $UPDATED generated (local proofs only)"
diff --git a/hooks/pre-commit-ots b/hooks/pre-commit-ots
deleted file mode 100755
index 65d354d..0000000
--- a/hooks/pre-commit-ots
+++ /dev/null
@@ -1,125 +0,0 @@
-#!/bin/bash
-# Git OpenTimestamp Pre-Commit Backfill Hook (ots CLI version)
-# Requires: opentimestamps-client (pipx install opentimestamps-client)
-
-set -e
-
-OUTPUT_DIR=".ots"
-STATUS_CACHE="$OUTPUT_DIR/.attestation-cache"
-
-mkdir -p "$OUTPUT_DIR"
-
-# Initialize cache
-if [ ! -f "$STATUS_CACHE" ]; then
-    echo "# Format: commit-hash:status:timestamp" > "$STATUS_CACHE"
-fi
-
-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)
-        if [ "$((now - timestamp))" -lt 3600 ]; then
-            echo "$status"
-            return 0
-        fi
-    fi
-    return 1
-}
-
-cache_status() {
-    local commit="$1"
-    local status="$2"
-    echo "$commit:$status:$(date +%s)" >> "$STATUS_CACHE"
-}
-
-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
-    fi
-    rm -f "$temp_file"
-    return 1
-}
-
-is_attested() {
-    local proof_file="$1"
-    local pending_count=$(ots info "$proof_file" 2>&1 | grep -c "PendingAttestation" || echo "0")
-    [ "$pending_count" -eq 0 ]
-}
-
-upgrade_proof() {
-    local proof_file="$1"
-    ots upgrade "$proof_file" 2>/dev/null
-}
-
-echo "[ots] Backfilling proofs..."
-
-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"
-    
-    if [ $CURRENT -le 3 ] || [ $CURRENT -eq $TOTAL ]; then
-        echo "[ots] Processing $CURRENT/$TOTAL: ${COMMIT:0:8}"
-    elif [ $CURRENT -eq 4 ]; then
-        echo "[ots] ... processing remaining ..."
-    fi
-    
-    if [ -f "$PROOF_FILE" ]; then
-        CACHED_STATUS=$(get_cached_status "$COMMIT" || echo "")
-        
-        [ "$CACHED_STATUS" = "attested" ] && continue
-        
-        if is_attested "$PROOF_FILE"; then
-            cache_status "$COMMIT" "attested"
-            continue
-        fi
-        
-        cache_status "$COMMIT" "pending"
-        
-        CACHE_LINE=$(grep "^$COMMIT:" "$STATUS_CACHE" | tail -1)
-        CACHE_TIME=$(echo "$CACHE_LINE" | cut -d: -f3)
-        CACHE_AGE=$(($(date +%s) - CACHE_TIME))
-        
-        [ "$CACHE_AGE" -lt 600 ] && continue
-        
-        if upgrade_proof "$PROOF_FILE"; then
-            cache_status "$COMMIT" "attested"
-            UPDATED=$((UPDATED + 1))
-        fi
-    else
-        if generate_proof "$COMMIT" "$PROOF_FILE"; then
-            cache_status "$COMMIT" "pending"
-            UPDATED=$((UPDATED + 1))
-        fi
-    fi
-done
-
-# Update latest proof
-LATEST_COMMIT=$(git rev-parse HEAD)
-[ -f "$OUTPUT_DIR/${LATEST_COMMIT}.ots" ] && cp "$OUTPUT_DIR/${LATEST_COMMIT}.ots" "$OUTPUT_DIR/proof.ots"
-
-# Save commit chain
-rm -f "$OUTPUT_DIR/commit-chain.txt"
-git rev-list HEAD | while read COMMIT; do
-    PREV=$(git rev-parse ${COMMIT}^1 2>/dev/null || echo "")
-    [ -n "$PREV" ] && echo "$COMMIT:$PREV" >> "$OUTPUT_DIR/commit-chain.txt"
-done
-
-echo "[ots] Backfill complete: $UPDATED updated"
diff --git a/test10.txt b/test10.txt
deleted file mode 100644
index e6451d2..0000000
--- a/test10.txt
+++ /dev/null
@@ -1 +0,0 @@
-# Another test commit
diff --git a/test11.txt b/test11.txt
deleted file mode 100644
index 0ef48fe..0000000
--- a/test11.txt
+++ /dev/null
@@ -1 +0,0 @@
-# Test new ots-only hooks
diff --git a/test12.txt b/test12.txt
deleted file mode 100644
index 1af7b08..0000000
--- a/test12.txt
+++ /dev/null
@@ -1 +0,0 @@
-# Test renamed hooks
diff --git a/test9.txt b/test9.txt
deleted file mode 100644
index 10e6a35..0000000
--- a/test9.txt
+++ /dev/null
@@ -1 +0,0 @@
-# Test self-contained hooks