Initial commit: Git OpenTimestamp hooks skill
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Otto
commit
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165
scripts/backfill-proofs.sh
Executable file
165
scripts/backfill-proofs.sh
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#!/bin/bash
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# backfill-proofs.sh - Generate/upgrade OpenTimestamp proofs for all commits
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# Usage: backfill-proofs.sh [repository-path]
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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 "$REPO_PATH"
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# Verify we're in a git repository
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if ! git rev-parse --git-dir > /dev/null 2>&1; then
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echo "Error: not a git repository" >&2
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exit 1
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fi
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# Find the generate-proof.sh script
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GENERATE_SCRIPT=""
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# Check if generate-proof.sh is in the same directory as this script
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if [ -f "$SCRIPT_DIR/generate-proof.sh" ]; then
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GENERATE_SCRIPT="$SCRIPT_DIR/generate-proof.sh"
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# Check in repository root
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elif [ -f "generate-proof.sh" ]; then
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GENERATE_SCRIPT="./generate-proof.sh"
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# Check if skill is installed globally
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elif [ -f "$HOME/.openclaw/workspace/skills/git-ots-hook/scripts/generate-proof.sh" ]; then
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GENERATE_SCRIPT="$HOME/.openclaw/workspace/skills/git-ots-hook/scripts/generate-proof.sh"
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else
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echo "Error: generate-proof.sh not found" >&2
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exit 1
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fi
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chmod +x "$GENERATE_SCRIPT"
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# Ensure .ots directory exists
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mkdir -p .ots
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# Cache file for attestation status (avoids repeated ots info calls)
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STATUS_CACHE=".ots/.attestation-cache"
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if [ ! -f "$STATUS_CACHE" ]; then
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echo "# Attestation status cache" > "$STATUS_CACHE"
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echo "# Format: commit-hash:status:timestamp" >> "$STATUS_CACHE"
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fi
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# Function to check cached status
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get_cached_status() {
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local commit="$1"
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local cache_line=$(grep "^$commit:" "$STATUS_CACHE" 2>/dev/null | tail -1)
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if [ -n "$cache_line" ]; then
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local status=$(echo "$cache_line" | cut -d: -f2)
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local timestamp=$(echo "$cache_line" | cut -d: -f3)
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local now=$(date +%s)
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local age=$((now - timestamp))
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# Cache valid for 1 hour (3600 seconds)
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if [ "$age" -lt 3600 ]; then
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echo "$status"
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return 0
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fi
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fi
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return 1
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}
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# Function to cache status
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cache_status() {
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local commit="$1"
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local status="$2"
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local now=$(date +%s)
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echo "$commit:$status:$now" >> "$STATUS_CACHE"
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}
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echo "[ots-backfill] Scanning commit history..."
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# Get all commit hashes (oldest to newest)
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COMMITS=$(git rev-list --reverse HEAD)
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TOTAL=$(echo "$COMMITS" | wc -l)
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CURRENT=0
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# Track if any proofs were updated
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UPDATED=0
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for COMMIT in $COMMITS; do
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CURRENT=$((CURRENT + 1))
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echo "[ots-backfill] Processing commit $CURRENT/$TOTAL: ${COMMIT:0:8}"
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# Check if proof exists for this commit
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PROOF_FILE=".ots/${COMMIT}.ots"
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if [ -f "$PROOF_FILE" ]; then
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# Check cached status first
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CACHED_STATUS=$(get_cached_status "$COMMIT" || echo "")
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if [ "$CACHED_STATUS" = "attested" ]; then
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echo " ✓ Already attested (cached, skipping)"
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continue
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fi
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# Check if already fully attested (only if not cached or cache expired)
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PENDING_COUNT=$(ots info "$PROOF_FILE" 2>&1 | grep -c "PendingAttestation" || echo "0")
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if [ "$PENDING_COUNT" -eq 0 ]; then
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echo " ✓ Already attested"
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cache_status "$COMMIT" "attested"
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continue
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fi
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# Cache as pending
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cache_status "$COMMIT" "pending"
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# Skip upgrade if cache is fresh (< 10 min old)
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CACHE_LINE=$(grep "^$COMMIT:" "$STATUS_CACHE" | tail -1)
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CACHE_TIME=$(echo "$CACHE_LINE" | cut -d: -f3)
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NOW=$(date +%s)
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CACHE_AGE=$((NOW - CACHE_TIME))
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if [ "$CACHE_AGE" -lt 600 ]; then
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echo " - Pending (cached <10min, skipping calendar call)"
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continue
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fi
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# Try to upgrade existing proof (contacts calendars)
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echo " Upgrading pending proof..."
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if ots upgrade "$PROOF_FILE" 2>/dev/null; then
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echo " ✓ Upgraded to attested"
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cache_status "$COMMIT" "attested"
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UPDATED=$((UPDATED + 1))
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else
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echo " - Still pending (no upgrade available yet)"
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# Update cache timestamp
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cache_status "$COMMIT" "pending"
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fi
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else
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# Generate new proof for this commit
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echo " Generating new proof..."
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"$GENERATE_SCRIPT" "$COMMIT" "$PROOF_FILE" >/dev/null 2>&1
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echo " ✓ Generated proof"
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cache_status "$COMMIT" "pending"
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UPDATED=$((UPDATED + 1))
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fi
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done
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# Create/update latest proof symlink
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LATEST_COMMIT=$(git rev-parse HEAD)
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if [ -f ".ots/${LATEST_COMMIT}.ots" ]; then
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cp ".ots/${LATEST_COMMIT}.ots" ".ots/proof.ots"
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echo "[ots-backfill] Updated .ots/proof.ots for latest commit"
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fi
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# Save previous commit chain info
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echo "[ots-backfill] Saving commit chain..."
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git rev-list HEAD | while read COMMIT; do
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PREV=$(git rev-parse ${COMMIT}^1 2>/dev/null || echo "")
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if [ -n "$PREV" ]; then
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echo "$COMMIT:$PREV" >> ".ots/commit-chain.txt"
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fi
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done
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echo ""
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echo "[ots-backfill] Complete! Processed $TOTAL commits, updated $UPDATED proofs"
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echo ""
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echo "Proofs stored in: .ots/"
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echo " - Individual proofs: .ots/<commit-hash>.ots"
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echo " - Latest proof: .ots/proof.ots"
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echo " - Commit chain: .ots/commit-chain.txt"
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