""" IPFS Integration Module - Off-Chain Script Storage Content-addressed storage for Bitcoin scripts with verification capabilities """ import json import hashlib import base64 import datetime import re import math from typing import Dict, List, Optional, Any, Union class IPFSIntegration: """ Simulated IPFS integration for off-chain Bitcoin script storage. Provides content addressing and verification capabilities. """ def __init__(self): self.content_store = {} self.pin_registry = {} self.content_graph = {} self.node_id = self._generate_node_id() self.network_stats = { "total_content": 0, "pinned_content": 0, "content_size_bytes": 0, "network_peers": 0 } def store_script_content(self, script_data: str, metadata: Dict[str, Any] = None, pin: bool = True) -> Dict[str, Any]: """ Store Bitcoin script content with content addressing. Returns CID and storage confirmation. """ try: if not script_data or len(script_data) == 0: return { "success": False, "error": "Empty script data", "timestamp": datetime.datetime.now().isoformat() } content_hash = hashlib.sha256(script_data.encode()).hexdigest() cid = self._generate_cid(content_hash) if cid in self.content_store: return { "success": True, "cid": cid, "already_exists": True, "content_hash": content_hash, "timestamp": datetime.datetime.now().isoformat() } storage_entry = { "cid": cid, "content": script_data, "content_hash": content_hash, "timestamp": datetime.datetime.now().isoformat(), "size": len(script_data), "node_id": self.node_id, "metadata": metadata or {}, "content_type": "bitcoin_script", "version": "1.0" } self.content_store[cid] = storage_entry self.network_stats["total_content"] += 1 self.network_stats["content_size_bytes"] += len(script_data) if pin: self._pin_content(cid) return { "success": True, "cid": cid, "content_hash": content_hash, "size": len(script_data), "pinned": pin, "node_id": self.node_id, "timestamp": storage_entry["timestamp"], "storage_confirmation": True } except Exception as e: return { "success": False, "error": str(e), "timestamp": datetime.datetime.now().isoformat() } def retrieve_script_content(self, cid: str, verify_integrity: bool = True) -> Dict[str, Any]: """Retrieve script content by CID with optional integrity verification.""" if cid not in self.content_store: return { "success": False, "error": "Content not found", "cid": cid, "timestamp": datetime.datetime.now().isoformat() } entry = self.content_store[cid] if verify_integrity: current_hash = hashlib.sha256(entry["content"].encode()).hexdigest() if current_hash != entry["content_hash"]: return { "success": False, "error": "Content integrity verification failed", "cid": cid, "stored_hash": entry["content_hash"], "computed_hash": current_hash, "timestamp": datetime.datetime.now().isoformat() } return { "success": True, "cid": cid, "content": entry["content"], "content_hash": entry["content_hash"], "metadata": entry["metadata"], "size": entry["size"], "timestamp": entry["timestamp"], "content_type": entry["content_type"], "pinned": cid in self.pin_registry } def create_script_bundle(self, scripts: List[Dict[str, Any]], bundle_metadata: Dict[str, Any] = None) -> Dict[str, Any]: """ Create a bundle of related scripts for batch operations. """ try: bundle_id = hashlib.sha256(f"bundle_{datetime.datetime.now().isoformat()}".encode()).hexdigest()[:16] script_cids = [] for i, script_item in enumerate(scripts): script_data = script_item.get("script_data", "") script_metadata = script_item.get("metadata", {}) storage_result = self.store_script_content( script_data, {**script_metadata, "bundle_id": bundle_id, "bundle_index": i} ) if storage_result["success"]: script_cids.append(storage_result["cid"]) else: return { "success": False, "error": f"Failed to store script at index {i}: {storage_result['error']}", "timestamp": datetime.datetime.now().isoformat() } bundle_data = { "bundle_id": bundle_id, "script_cids": script_cids, "script_count": len(script_cids), "bundle_metadata": bundle_metadata or {}, "created_at": datetime.datetime.now().isoformat(), "node_id": self.node_id } bundle_json = json.dumps(bundle_data, separators=(',', ':')) bundle_storage = self.store_script_content( bundle_json, {"content_type": "script_bundle", "bundle_id": bundle_id} ) return { "success": True, "bundle_id": bundle_id, "bundle_cid": bundle_storage["cid"], "script_cids": script_cids, "script_count": len(script_cids), "bundle_data": bundle_data, "timestamp": datetime.datetime.now().isoformat() } except Exception as e: return { "success": False, "error": str(e), "timestamp": datetime.datetime.now().isoformat() } def retrieve_script_bundle(self, bundle_cid: str) -> Dict[str, Any]: """Retrieve and decode a script bundle.""" bundle_retrieval = self.retrieve_script_content(bundle_cid) if not bundle_retrieval["success"]: return bundle_retrieval try: bundle_data = json.loads(bundle_retrieval["content"]) script_details = [] for script_cid in bundle_data.get("script_cids", []): script_retrieval = self.retrieve_script_content(script_cid) if script_retrieval["success"]: script_details.append(script_retrieval) return { "success": True, "bundle_data": bundle_data, "script_details": script_details, "retrieved_count": len(script_details), "total_count": bundle_data.get("script_count", 0), "timestamp": datetime.datetime.now().isoformat() } except Exception as e: return { "success": False, "error": f"Failed to parse bundle data: {str(e)}", "timestamp": datetime.datetime.now().isoformat() } def _pin_content(self, cid: str) -> bool: """Pin content to prevent garbage collection.""" if cid in self.content_store: self.pin_registry[cid] = { "pinned_at": datetime.datetime.now().isoformat(), "node_id": self.node_id } self.network_stats["pinned_content"] += 1 return True return False def _generate_cid(self, content_hash: str) -> str: """Generate IPFS-style CID from content hash.""" cid_prefix = "bafybeigdyz" # Simplified CID format return f"{cid_prefix}{content_hash[:32]}" def _generate_node_id(self) -> str: """Generate IPFS node identifier.""" return f"Qm{hashlib.sha256(f'node_{datetime.datetime.now()}'.encode()).hexdigest()[:46]}" def verify_content_availability(self, cids: List[str]) -> Dict[str, Any]: """ Verify if multiple content items are available. """ availability_results = {} for cid in cids: availability_results[cid] = { "available": cid in self.content_store, "pinned": cid in self.pin_registry, "size": self.content_store[cid]["size"] if cid in self.content_store else 0 } available_count = sum(1 for result in availability_results.values() if result["available"]) pinned_count = sum(1 for result in availability_results.values() if result["pinned"]) return { "total_checked": len(cids), "available_count": available_count, "pinned_count": pinned_count, "availability_rate": available_count / len(cids) if cids else 0, "detailed_results": availability_results, "timestamp": datetime.datetime.now().isoformat() } def get_network_statistics(self) -> Dict[str, Any]: """Get IPFS network statistics.""" return { **self.network_stats, "node_id": self.node_id, "content_store_size": len(self.content_store), "pin_registry_size": len(self.pin_registry), "average_content_size": self.network_stats["content_size_bytes"] / self.network_stats["total_content"] if self.network_stats["total_content"] > 0 else 0, "timestamp": datetime.datetime.now().isoformat() } def search_script_content(self, query: str, limit: int = 50) -> Dict[str, Any]: """ Search stored script content by metadata or content. """ results = [] for cid, entry in self.content_store.items(): content = entry["content"].lower() metadata = json.dumps(entry["metadata"]).lower() if entry["metadata"] else "" if query.lower() in content or query.lower() in metadata: result_item = { "cid": cid, "content_preview": entry["content"][:100] + "..." if len(entry["content"]) > 100 else entry["content"], "metadata": entry["metadata"], "size": entry["size"], "timestamp": entry["timestamp"], "pinned": cid in self.pin_registry } results.append(result_item) results = results[:limit] return { "success": True, "query": query, "result_count": len(results), "results": results, "timestamp": datetime.datetime.now().isoformat() } class ScriptVersioning: """ Version control for Bitcoin scripts stored on IPFS. """ def __init__(self, ipfs_instance: IPFSIntegration): self.ipfs = ipfs_instance self.version_history = {} def create_script_version(self, script_data: str, version_tag: str = None, parent_cid: str = None) -> Dict[str, Any]: """ Create a new version of a script. """ try: script_hash = hashlib.sha256(script_data.encode()).hexdigest() version_id = version_tag or f"v{int(datetime.datetime.now().timestamp())}" version_metadata = { "version_id": version_id, "script_hash": script_hash, "parent_cid": parent_cid, "version_type": "incremental" if parent_cid else "initial", "created_at": datetime.datetime.now().isoformat() } storage_result = self.ipfs.store_script_content(script_data, version_metadata) if storage_result["success"]: if script_hash not in self.version_history: self.version_history[script_hash] = [] version_entry = { "version_id": version_id, "cid": storage_result["cid"], "parent_cid": parent_cid, "timestamp": version_metadata["created_at"] } self.version_history[script_hash].append(version_entry) return { "success": storage_result["success"], "version_id": version_id, "cid": storage_result.get("cid", ""), "script_hash": script_hash, "storage_result": storage_result, "timestamp": datetime.datetime.now().isoformat() } except Exception as e: return { "success": False, "error": str(e), "timestamp": datetime.datetime.now().isoformat() } def get_script_versions(self, script_hash: str) -> Dict[str, Any]: """Get all versions of a script.""" if script_hash not in self.version_history: return { "success": False, "error": "No version history found for script hash", "script_hash": script_hash, "timestamp": datetime.datetime.now().isoformat() } versions = [] for version_entry in self.version_history[script_hash]: cid = version_entry["cid"] content_retrieval = self.ipfs.retrieve_script_content(cid) version_info = { **version_entry, "content_available": content_retrieval["success"], "content": content_retrieval.get("content", "") if content_retrieval["success"] else "", "metadata": content_retrieval.get("metadata", {}) if content_retrieval["success"] else {} } versions.append(version_info) return { "success": True, "script_hash": script_hash, "version_count": len(versions), "versions": versions, "timestamp": datetime.datetime.now().isoformat() } def test_ipfs_integration(): """Test IPFS integration functionality.""" ipfs = IPFSIntegration() test_script = "OP_RETURN OP_HASH160 a1b2c3d4e5f6789012345678901234567890abcd" test_metadata = { "script_type": "hash_lock", "creator": "starlight_auditor", "network": "bitcoin" } storage_result = ipfs.store_script_content(test_script, test_metadata) print("✅ IPFS Integration Test:") print(f"Storage success: {storage_result['success']}") if storage_result['success']: retrieval_result = ipfs.retrieve_script_content(storage_result['cid']) print(f"Retrieval success: {retrieval_result['success']}") bundle_result = ipfs.create_script_bundle([ {"script_data": test_script, "metadata": {"index": 0}}, {"script_data": "OP_CHECKSIG", "metadata": {"index": 1}} ]) print(f"Bundle creation: {bundle_result['success']}") stats = ipfs.get_network_statistics() print(f"Network stats: Total content {stats['total_content']}") return storage_result if __name__ == "__main__": test_ipfs_integration()