""" Starlight OP_CAT API Extensions and Protocol Modifications ========================================================== This module defines the API extensions and protocol modifications required for integrating Bitcoin's OP_CAT operations with Starlight's IPFS infrastructure. Author: Starlight Engineering Team Version: 1.0 Date: 2026-02-06 """ import json import hashlib import base64 from typing import Dict, List, Optional, Any, Union, Callable from dataclasses import dataclass, asdict from enum import Enum from datetime import datetime class APIVersion(Enum): """API version enumeration.""" V1_0 = "1.0" V1_1 = "1.1" class ProtocolExtension(Enum): """Protocol extension types.""" OP_CAT_OPERATIONS = "op_cat_operations" COVENANT_BINDING = "covenant_binding" CONTENT_VERIFICATION = "content_verification" BITCOIN_INTEGRATION = "bitcoin_integration" @dataclass class APIEndpoint: """API endpoint specification.""" path: str method: str description: str parameters: Dict[str, Any] response_schema: Dict[str, Any] requires_auth: bool = False rate_limit: Optional[int] = None @dataclass class ProtocolModification: """Protocol modification specification.""" modification_id: str extension_type: ProtocolExtension description: str backward_compatible: bool implementation_status: str affected_components: List[str] class OPCATAPIExtensions: """Main API extensions for OP_CAT operations.""" def __init__(self): self.endpoints: Dict[str, APIEndpoint] = {} self.middleware_stack: List[Callable] = [] self.protocol_modifications: Dict[str, ProtocolModification] = {} self.api_version = APIVersion.V1_0 self._register_standard_endpoints() self._register_protocol_modifications() def _register_standard_endpoints(self): """Register standard API endpoints for OP_CAT operations.""" # Content processing with OP_CAT self.endpoints["process_content"] = APIEndpoint( path="/api/v1/opcat/process", method="POST", description="Process content with OP_CAT operations and generate IPFS CID", parameters={ "content": {"type": "bytes", "required": True, "max_size": 520}, "operations": {"type": "array", "required": True}, "metadata": {"type": "object", "required": False} }, response_schema={ "cid": {"type": "string"}, "operations": {"type": "array"}, "verification_data": {"type": "object"}, "processing_time": {"type": "number"} }, requires_auth=True, rate_limit=100 ) # OP_CAT operation execution self.endpoints["execute_opcat"] = APIEndpoint( path="/api/v1/opcat/execute", method="POST", description="Execute individual OP_CAT operation", parameters={ "operation_type": {"type": "string", "required": True}, "elements": {"type": "array", "required": True}, "validation_data": {"type": "object", "required": False} }, response_schema={ "operation_id": {"type": "string"}, "result": {"type": "string"}, "result_hash": {"type": "string"}, "success": {"type": "boolean"} }, requires_auth=True, rate_limit=200 ) # Covenant creation self.endpoints["create_covenant"] = APIEndpoint( path="/api/v1/covenants", method="POST", description="Create Bitcoin covenant with OP_CAT operations", parameters={ "ipfs_cid": {"type": "string", "required": True}, "spending_conditions": {"type": "object", "required": True}, "cat_operations": {"type": "array", "required": True}, "validation_script": {"type": "string", "required": False} }, response_schema={ "covenant_id": {"type": "string"}, "bitcoin_script": {"type": "string"}, "validation_endpoint": {"type": "string"}, "bridge_config": {"type": "object"} }, requires_auth=True, rate_limit=50 ) # Transaction validation self.endpoints["validate_transaction"] = APIEndpoint( path="/api/v1/validate/transaction", method="POST", description="Validate Bitcoin transaction with OP_CAT covenant", parameters={ "transaction_data": {"type": "bytes", "required": True}, "covenant_id": {"type": "string", "required": True}, "proof_data": {"type": "object", "required": False} }, response_schema={ "valid": {"type": "boolean"}, "covenant_id": {"type": "string"}, "validation_details": {"type": "object"}, "timestamp": {"type": "string"} }, requires_auth=False, rate_limit=1000 ) # Content verification self.endpoints["verify_content"] = APIEndpoint( path="/api/v1/verify/content", method="GET", description="Verify IPFS content with OP_CAT operations", parameters={ "cid": {"type": "string", "required": True}, "operation_results": {"type": "array", "required": False} }, response_schema={ "verified": {"type": "boolean"}, "cid": {"type": "string"}, "verification_hash": {"type": "string"}, "opcat_validations": {"type": "array"} }, requires_auth=False, rate_limit=500 ) # Protocol status self.endpoints["protocol_status"] = APIEndpoint( path="/api/v1/protocol/status", method="GET", description="Get OP_CAT protocol status and capabilities", parameters={}, response_schema={ "opcat_enabled": {"type": "boolean"}, "supported_operations": {"type": "array"}, "protocol_version": {"type": "string"}, "extensions": {"type": "array"} }, requires_auth=False, rate_limit=None ) def _register_protocol_modifications(self): """Register protocol modifications for OP_CAT integration.""" # OP_CAT operations extension self.protocol_modifications["opcat_operations"] = ProtocolModification( modification_id="opcat_operations_001", extension_type=ProtocolExtension.OP_CAT_OPERATIONS, description="Add support for Bitcoin OP_CAT operations in IPFS content addressing", backward_compatible=True, implementation_status="implemented", affected_components=["content_processor", "hash_generator", "api_layer"] ) # Covenant binding extension self.protocol_modifications["covenant_binding"] = ProtocolModification( modification_id="covenant_binding_001", extension_type=ProtocolExtension.COVENANT_BINDING, description="Enable Bitcoin covenant binding to IPFS content via OP_CAT", backward_compatible=True, implementation_status="implemented", affected_components=["bitcoin_integration", "covenant_manager", "script_generator"] ) # Content verification extension self.protocol_modifications["content_verification"] = ProtocolModification( modification_id="content_verification_001", extension_type=ProtocolExtension.CONTENT_VERIFICATION, description="Enhanced content verification using OP_CAT operations", backward_compatible=True, implementation_status="implemented", affected_components=["verification_engine", "hash_validator", "proof_generator"] ) # Bitcoin integration extension self.protocol_modifications["bitcoin_integration"] = ProtocolModification( modification_id="bitcoin_integration_001", extension_type=ProtocolExtension.BITCOIN_INTEGRATION, description="Deep Bitcoin integration with OP_CAT support", backward_compatible=False, implementation_status="in_development", affected_components=["bitcoin_client", "script_interpreter", "transaction_builder"] ) def get_endpoint_schema(self, endpoint_name: str) -> Optional[Dict[str, Any]]: """Get schema for a specific endpoint.""" if endpoint_name not in self.endpoints: return None endpoint = self.endpoints[endpoint_name] return asdict(endpoint) def get_all_endpoints(self) -> Dict[str, Dict[str, Any]]: """Get all registered endpoints.""" return {name: asdict(endpoint) for name, endpoint in self.endpoints.items()} def get_protocol_modifications(self) -> Dict[str, Dict[str, Any]]: """Get all protocol modifications.""" return { name: { **asdict(mod), "extension_type": mod.extension_type.value } for name, mod in self.protocol_modifications.items() } class OPCATProtocolHandler: """Protocol handler for OP_CAT operations.""" def __init__(self, api_extensions: OPCATAPIExtensions): self.api = api_extensions self.operation_handlers: Dict[str, Callable] = {} self.validation_rules: Dict[str, Callable] = {} self._register_operation_handlers() self._register_validation_rules() def _register_operation_handlers(self): """Register handlers for different OP_CAT operations.""" def handle_content_concat(params: Dict[str, Any]) -> Dict[str, Any]: """Handle content concatenation operation.""" content = params.get("content", b"") additional_data = params.get("additional_data", b"") if isinstance(additional_data, str): additional_data = additional_data.encode() # Validate size limit result = content + additional_data if len(result) > 520: raise ValueError("Concatenated result exceeds 520 byte limit") return { "operation_id": hashlib.sha256(result).hexdigest()[:16], "result": base64.b64encode(result).decode(), "result_hash": hashlib.sha256(result).hexdigest(), "result_size": len(result), "success": True } def handle_hash_chain(params: Dict[str, Any]) -> Dict[str, Any]: """Handle hash chain operation.""" initial_data = params.get("initial_data", b"") chain_elements = params.get("chain_elements", []) current_hash = hashlib.sha256(initial_data).digest() for element in chain_elements: if isinstance(element, str): element = element.encode() current_hash = hashlib.sha256(current_hash + element).digest() return { "operation_id": hashlib.sha256(current_hash).hexdigest()[:16], "result": base64.b64encode(current_hash).decode(), "result_hash": current_hash.hex(), "result_size": len(current_hash), "success": True, "chain_length": len(chain_elements) } def handle_merkle_proof(params: Dict[str, Any]) -> Dict[str, Any]: """Handle Merkle proof operation.""" leaf_data = params.get("leaf_data", b"") sibling_hashes = params.get("sibling_hashes", []) leaf_hash = hashlib.sha256(leaf_data).digest() current = leaf_hash for sibling in sibling_hashes: if isinstance(sibling, str): sibling = bytes.fromhex(sibling) current = hashlib.sha256(current + sibling).digest() return { "operation_id": hashlib.sha256(current).hexdigest()[:16], "result": base64.b64encode(current).decode(), "result_hash": current.hex(), "result_size": len(current), "success": True, "proof_depth": len(sibling_hashes) } def handle_script_introspection(params: Dict[str, Any]) -> Dict[str, Any]: """Handle script introspection operation.""" tx_data = params.get("transaction_data", b"") script_context = params.get("script_context", b"") combined = tx_data + script_context if len(combined) > 520: combined = combined[:520] introspection_result = hashlib.sha256(combined).digest() return { "operation_id": hashlib.sha256(introspection_result).hexdigest()[:16], "result": base64.b64encode(introspection_result).decode(), "result_hash": introspection_result.hex(), "result_size": len(introspection_result), "success": True, "introspection_data": combined.hex() } self.operation_handlers = { "content_concat": handle_content_concat, "hash_chain": handle_hash_chain, "merkle_proof": handle_merkle_proof, "script_introspection": handle_script_introspection } def _register_validation_rules(self): """Register validation rules for OP_CAT operations.""" def validate_size_limit(operation_data: Dict[str, Any]) -> bool: """Validate 520 byte size limit.""" result = operation_data.get("result", "") if isinstance(result, str): result = base64.b64decode(result) return len(result) <= 520 def validate_hash_format(operation_data: Dict[str, Any]) -> bool: """Validate hash format.""" result_hash = operation_data.get("result_hash", "") return len(result_hash) == 64 and all(c in "0123456789abcdef" for c in result_hash.lower()) def validate_operation_id(operation_data: Dict[str, Any]) -> bool: """Validate operation ID format.""" operation_id = operation_data.get("operation_id", "") return len(operation_id) == 16 and all(c in "0123456789abcdef" for c in operation_id.lower()) self.validation_rules = { "size_limit": validate_size_limit, "hash_format": validate_hash_format, "operation_id": validate_operation_id } def execute_operation(self, operation_type: str, params: Dict[str, Any]) -> Dict[str, Any]: """Execute an OP_CAT operation.""" if operation_type not in self.operation_handlers: return { "success": False, "error": f"Unsupported operation type: {operation_type}", "timestamp": datetime.utcnow().isoformat() } try: # Execute operation result = self.operation_handlers[operation_type](params) # Validate result validation_errors = [] for rule_name, rule_func in self.validation_rules.items(): if not rule_func(result): validation_errors.append(rule_name) if validation_errors: result["validation_errors"] = validation_errors result["success"] = False else: result["validation_passed"] = True result["timestamp"] = datetime.utcnow().isoformat() return result except Exception as e: return { "success": False, "error": str(e), "timestamp": datetime.utcnow().isoformat() } class OPCATAPIInterface: """Main API interface for OP_CAT operations.""" def __init__(self): self.api_extensions = OPCATAPIExtensions() self.protocol_handler = OPCATProtocolHandler(self.api_extensions) self.request_log: List[Dict[str, Any]] = [] def process_content_request(self, request_data: Dict[str, Any]) -> Dict[str, Any]: """Process content with OP_CAT operations.""" # Log request request_id = hashlib.sha256( json.dumps(request_data, sort_keys=True).encode() + datetime.utcnow().isoformat().encode() ).hexdigest()[:16] self.request_log.append({ "request_id": request_id, "endpoint": "process_content", "timestamp": datetime.utcnow().isoformat(), "status": "processing" }) try: content = request_data.get("content", "") operations = request_data.get("operations", []) metadata = request_data.get("metadata", {}) if isinstance(content, str): content = base64.b64decode(content) # Execute operations operation_results = [] for operation in operations: op_type = operation.get("type") op_params = { "content": content, **operation.get("parameters", {}) } result = self.protocol_handler.execute_operation(op_type, op_params) operation_results.append(result) if not result.get("success", False): raise Exception(f"Operation {op_type} failed: {result.get('error')}") # Generate IPFS CID composite_data = content for result in operation_results: result_data = base64.b64decode(result["result"]) composite_data += result_data final_hash = hashlib.sha256(composite_data).hexdigest() cid = base64.b32encode(bytes.fromhex(final_hash)).decode('ascii').lower().rstrip('=') ipfs_cid = f"bafy{cid}" response = { "success": True, "request_id": request_id, "cid": ipfs_cid, "operations": operation_results, "verification_data": { "content_hash": hashlib.sha256(content).hexdigest(), "composite_hash": final_hash, "operation_count": len(operation_results) }, "processing_time": 0.1 # Simulated processing time } # Update request log for log_entry in self.request_log: if log_entry["request_id"] == request_id: log_entry["status"] = "completed" log_entry["result_cid"] = ipfs_cid return response except Exception as e: # Update request log with error for log_entry in self.request_log: if log_entry["request_id"] == request_id: log_entry["status"] = "failed" log_entry["error"] = str(e) return { "success": False, "request_id": request_id, "error": str(e), "timestamp": datetime.utcnow().isoformat() } def create_covenant_request(self, request_data: Dict[str, Any]) -> Dict[str, Any]: """Create Bitcoin covenant with OP_CAT operations.""" try: ipfs_cid = request_data.get("ipfs_cid") spending_conditions = request_data.get("spending_conditions", {}) cat_operations = request_data.get("cat_operations", []) validation_script = request_data.get("validation_script", "OP_CHECKSIG") # Generate covenant script script_elements = [ "OP_TOALTSTACK", f"OP_PUSHBYTES_{len(ipfs_cid)}:{ipfs_cid}", ] for op_id in cat_operations: script_elements.extend([ f"OP_CAT_{op_id}", "OP_FROMALTSTACK", "OP_EQUALVERIFY" ]) script_elements.append(validation_script) bitcoin_script = " ".join(script_elements) covenant_id = f"covenant_{hashlib.sha256((ipfs_cid + bitcoin_script).encode()).hexdigest()[:16]}" return { "success": True, "covenant_id": covenant_id, "ipfs_cid": ipfs_cid, "bitcoin_script": bitcoin_script, "validation_endpoint": f"/api/v1/validate/transaction/{covenant_id}", "bridge_config": { "cat_operations": cat_operations, "spending_conditions": spending_conditions, "validation_script": validation_script }, "timestamp": datetime.utcnow().isoformat() } except Exception as e: return { "success": False, "error": str(e), "timestamp": datetime.utcnow().isoformat() } def get_protocol_status(self) -> Dict[str, Any]: """Get protocol status and capabilities.""" return { "opcat_enabled": True, "supported_operations": list(self.protocol_handler.operation_handlers.keys()), "protocol_version": self.api_extensions.api_version.value, "extensions": self.api_extensions.get_protocol_modifications(), "available_endpoints": list(self.api_extensions.endpoints.keys()), "validation_rules": list(self.protocol_handler.validation_rules.keys()), "timestamp": datetime.utcnow().isoformat() } # API documentation generator def generate_api_documentation() -> str: """Generate comprehensive API documentation.""" api = OPCATAPIExtensions() documentation = f""" # Starlight OP_CAT API Documentation ## Overview This document describes the API extensions and protocol modifications for integrating Bitcoin's OP_CAT operations with Starlight's IPFS infrastructure. ## API Version: {api.api_version.value} ## Protocol Modifications """ for mod_name, mod in api.protocol_modifications.items(): documentation += f""" ### {mod_name} - **Type**: {mod.extension_type.value} - **Description**: {mod.description} - **Backward Compatible**: {mod.backward_compatible} - **Status**: {mod.implementation_status} - **Affected Components**: {', '.join(mod.affected_components)} """ documentation += "\n## Available Endpoints\n" for endpoint_name, endpoint in api.endpoints.items(): documentation += f""" ### {endpoint_name} - **Path**: {endpoint.method} {endpoint.path} - **Description**: {endpoint.description} - **Authentication Required**: {endpoint.requires_auth} - **Rate Limit**: {endpoint.rate_limit or 'None'} #### Parameters """ for param_name, param_spec in endpoint.parameters.items(): required = param_spec.get("required", False) param_type = param_spec.get("type", "unknown") documentation += f"- **{param_name}** ({param_type}) {'(Required)' if required else '(Optional)'}\n" documentation += "\n#### Response Schema\n" for field_name, field_spec in endpoint.response_schema.items(): field_type = field_spec.get("type", "unknown") documentation += f"- **{field_name}** ({field_type})\n" documentation += "\n" return documentation # Example usage def test_api_interface(): """Test the API interface.""" api = OPCATAPIInterface() # Test content processing test_request = { "content": base64.b64encode(b"Test content for OP_CAT API").decode(), "operations": [ { "type": "content_concat", "parameters": {"additional_data": b"OP_CAT_EXTENSION"} }, { "type": "hash_chain", "parameters": {"chain_elements": ["validation", "covenant"]} } ], "metadata": {"source": "test", "version": "1.0"} } result = api.process_content_request(test_request) # Test covenant creation if result.get("success"): covenant_request = { "ipfs_cid": result["cid"], "spending_conditions": {"requires_validation": True}, "cat_operations": [op["operation_id"] for op in result["operations"]], "validation_script": "OP_CHECKSIG" } covenant_result = api.create_covenant_request(covenant_request) result["covenant_creation"] = covenant_result # Get protocol status result["protocol_status"] = api.get_protocol_status() return result if __name__ == "__main__": # Generate documentation doc = generate_api_documentation() with open("/data/uploads/results/wish-73e17098111a193824d391864804fd4b165df7ff107236d79c9d690c5db4e605/opcat_api_documentation.md", "w") as f: f.write(doc) # Test API test_result = test_api_interface() print(json.dumps(test_result, indent=2))