# NAC UDM API规范文档

**版本**: 1.0.0  
**作者**: NAC公链开发小组  
**日期**: 2025-02-07  
**状态**: 正式发布

---

## 📋 目录

1. [概述](#概述)
2. [架构设计](#架构设计)
3. [核心注册表系统API](#核心注册表系统api)
4. [基础原语类型API](#基础原语类型api)
5. [L2宪法治理层API](#l2宪法治理层api)
6. [L1多链协议层API](#l1多链协议层api)
7. [L0 CSNP网络层API](#l0-csnp网络层api)
8. [多语言绑定](#多语言绑定)
9. [错误处理](#错误处理)
10. [版本管理](#版本管理)

---

## 概述

NAC统一定义模块（UDM）是NewAssetChain区块链生态系统的**单一真理来源**（Single Source of Truth），统一管理所有类型定义、函数签名、常量、版本信息和协议规范。

### 核心特性

- ❌ **不使用任何ERC标准**（ERC-20、ERC-721、ERC-1155等）
- ❌ **不继承以太坊或其他链的实现**
- ❌ **不是P2P网络** - 使用CSNP宪政结构化网络协议
- ✅ **100% NAC原生设计**
- ✅ **专注于RWA（真实世界资产）应用场景**
- ✅ **基于CBPP宪政共识，不需要投票治理**
- ✅ **支持Rust/Go/Charter多语言绑定**

### 设计哲学

> "宪法治下，节点产生区块，参与即是共识，交易扩张区块的大小和高度。"

---

## 架构设计

NAC采用**3层架构体系**：

### L2: 宪法治理层 (Constitutional Governance Layer)

最高层级，定义整个系统的治理规则（**不是投票治理，而是规则定义层**）：

- **网络规则定义**: 连接规则、传播规则、惩罚条款（跨链适用）
- **跨链中继授权**: 授权跨链中继节点（CCRN）列表
- **宪法条款库**: 宪法收据（CR）验证规则
- **宪法执行引擎**: CEE管理与签发机制

### L1: 多链协议层 (Multi-Chain Protocol Layer)

核心协议层，实现"宪法即共识"：

- **CBPP核心**: 宪法区块生产协议（宪法收据CR、OPN、FBM、RVGP）
- **ACC协议族**: 13个原生资产协议（ACC-20, ACC-721, ACC-1155, ACC-RWA等）
- **NVM 2.0**: 虚拟机层（225个基础操作码 + 125个RWA专属指令）
- **GNACS**: 全球资产分类系统（48位编码）

### L0: CSNP结构化网络层 (CSNP Structured Network Layer)

宪政结构化网络层，提供5大核心组件（**不是P2P网络**）：

- **GIDS**: 全域身份目录服务 - 多链DID解析与信誉聚合
- **MA-RCM**: 多链自适应连接管理器 - 跨链优化连接拓扑
- **AA-PE**: 资产感知传播引擎 - 基于GNACS的智能路由
- **FTAN**: 碎片化交易聚合网络 - 批量签名与传播
- **UCA**: 统一跨链审计器 - 跨链行为追踪与惩罚

---

## 核心注册表系统API

### UID (Unified Identifier)

统一标识符，用于唯一标识每个定义。

#### 数据结构

```rust
pub struct UID {
    namespace: String,  // 命名空间 (e.g., "nac.l1.cbpp.receipt")
}
```

#### 构造方法

```rust
// 创建新的UID
pub fn new(namespace: impl Into<String>) -> Self

// 从字符串解析UID
pub fn from_str(s: &str) -> Result<Self, String>
```

#### 查询方法

```rust
// 获取完整命名空间
pub fn namespace(&self) -> &str

// 获取层级（l0, l1, l2）
pub fn layer(&self) -> Option<&str>

// 获取模块名称
pub fn module(&self) -> Option<&str>

// 获取定义名称
pub fn definition(&self) -> Option<&str>

// 获取父UID
pub fn parent(&self) -> Option<UID>

// 获取子UID
pub fn child(&self, name: &str) -> UID

// 是否是另一个UID的祖先
pub fn is_ancestor_of(&self, other: &UID) -> bool
```

#### 示例

```rust
use nac_udm::registry::UID;

// 创建UID
let uid = UID::new("nac.l1.cbpp.receipt");

// 查询层级
assert_eq!(uid.layer(), Some("l1"));
assert_eq!(uid.module(), Some("cbpp"));
assert_eq!(uid.definition(), Some("receipt"));

// 父子关系
let parent = uid.parent().unwrap();
assert_eq!(parent.namespace(), "nac.l1.cbpp");

let child = uid.child("field1");
assert_eq!(child.namespace(), "nac.l1.cbpp.receipt.field1");
```

---

### Version (版本管理)

语义化版本管理，遵循SemVer 2.0.0规范。

#### 数据结构

```rust
pub struct Version {
    major: u32,
    minor: u32,
    patch: u32,
    pre_release: Option<String>,
    build_metadata: Option<String>,
}
```

#### 构造方法

```rust
// 创建新版本
pub fn new(major: u32, minor: u32, patch: u32) -> Self

// 从字符串解析版本
pub fn from_str(s: &str) -> Result<Self, String>
```

#### 版本操作

```rust
// 递增主版本号
pub fn bump_major(&mut self)

// 递增次版本号
pub fn bump_minor(&mut self)

// 递增补丁版本号
pub fn bump_patch(&mut self)

// 设置预发布标签
pub fn set_pre_release(&mut self, pre_release: impl Into<String>)

// 设置构建元数据
pub fn set_build_metadata(&mut self, metadata: impl Into<String>)
```

#### 版本比较

```rust
// 是否兼容（主版本号相同）
pub fn is_compatible_with(&self, other: &Version) -> bool

// 是否向后兼容（主版本号相同，次版本号>=）
pub fn is_backward_compatible_with(&self, other: &Version) -> bool
```

#### 示例

```rust
use nac_udm::registry::Version;

// 创建版本
let mut v = Version::new(1, 2, 3);
assert_eq!(v.to_string(), "1.2.3");

// 递增版本
v.bump_minor();
assert_eq!(v.to_string(), "1.3.0");

// 版本比较
let v1 = Version::from_str("1.2.3").unwrap();
let v2 = Version::from_str("1.3.0").unwrap();
assert!(v1.is_compatible_with(&v2));
```

---

### Definition (定义抽象)

元定义系统，定义"什么是定义"。

#### 数据结构

```rust
pub struct Definition {
    uid: UID,
    version: Version,
    name: String,
    description: String,
    definition_type: DefinitionType,
    tags: Vec<String>,
    dependencies: Vec<UID>,
    deprecated: bool,
    language_bindings: HashMap<Language, LanguageBinding>,
}
```

#### 定义类型

```rust
pub enum DefinitionType {
    Type,           // 类型定义
    Function,       // 函数定义
    Constant,       // 常量定义
    Protocol,       // 协议定义
    Module,         // 模块定义
    Interface,      // 接口定义
}
```

#### 构造方法

```rust
// 使用构建器模式创建定义
pub fn builder() -> DefinitionBuilder

// 构建器方法
impl DefinitionBuilder {
    pub fn uid(mut self, uid: UID) -> Self
    pub fn version(mut self, version: Version) -> Self
    pub fn name(mut self, name: impl Into<String>) -> Self
    pub fn description(mut self, description: impl Into<String>) -> Self
    pub fn definition_type(mut self, dt: DefinitionType) -> Self
    pub fn add_tag(mut self, tag: impl Into<String>) -> Self
    pub fn add_dependency(mut self, dep: UID) -> Self
    pub fn deprecated(mut self, deprecated: bool) -> Self
    pub fn add_language_binding(mut self, lang: Language, binding: LanguageBinding) -> Self
    pub fn build(self) -> Definition
}
```

#### 查询方法

```rust
// 获取UID
pub fn uid(&self) -> &UID

// 获取版本
pub fn version(&self) -> &Version

// 获取名称
pub fn name(&self) -> &str

// 获取描述
pub fn description(&self) -> &str

// 获取定义类型
pub fn definition_type(&self) -> &DefinitionType

// 获取标签
pub fn tags(&self) -> &[String]

// 获取依赖
pub fn dependencies(&self) -> &[UID]

// 是否已弃用
pub fn is_deprecated(&self) -> bool

// 获取语言绑定
pub fn language_binding(&self, lang: Language) -> Option<&LanguageBinding>
```

#### 示例

```rust
use nac_udm::registry::{Definition, DefinitionType, UID, Version, Language, LanguageBinding};

// 创建定义
let def = Definition::builder()
    .uid(UID::new("nac.l1.cbpp.receipt"))
    .version(Version::new(1, 0, 0))
    .name("ConstitutionalReceipt")
    .description("宪法收据，交易进入区块链的唯一门票")
    .definition_type(DefinitionType::Type)
    .add_tag("cbpp")
    .add_tag("core")
    .add_language_binding(
        Language::Rust,
        LanguageBinding::new("pub struct ConstitutionalReceipt { ... }")
    )
    .build();

// 查询定义
assert_eq!(def.name(), "ConstitutionalReceipt");
assert_eq!(def.version().to_string(), "1.0.0");
assert!(def.tags().contains(&"cbpp".to_string()));
```

---

### DefinitionRegistry (定义注册表)

线程安全的定义管理系统。

#### 数据结构

```rust
pub struct DefinitionRegistry {
    // 内部使用Arc<RwLock<...>>实现线程安全
}
```

#### 注册方法

```rust
// 注册新定义
pub fn register(&self, definition: Definition) -> Result<(), String>

// 批量注册定义
pub fn register_batch(&self, definitions: Vec<Definition>) -> Result<(), String>
```

#### 查询方法

```rust
// 通过UID查询定义
pub fn get(&self, uid: &UID) -> Option<Definition>

// 通过UID和版本查询定义
pub fn get_version(&self, uid: &UID, version: &Version) -> Option<Definition>

// 获取最新版本
pub fn get_latest(&self, uid: &UID) -> Option<Definition>

// 获取所有版本
pub fn get_all_versions(&self, uid: &UID) -> Vec<Definition>

// 通过标签查询定义
pub fn find_by_tag(&self, tag: &str) -> Vec<Definition>

// 通过类型查询定义
pub fn find_by_type(&self, dt: &DefinitionType) -> Vec<Definition>

// 获取依赖关系
pub fn get_dependencies(&self, uid: &UID) -> Vec<UID>

// 获取反向依赖
pub fn get_dependents(&self, uid: &UID) -> Vec<UID>
```

#### 统计方法

```rust
// 获取定义总数
pub fn count(&self) -> usize

// 获取版本总数
pub fn version_count(&self) -> usize

// 按类型统计
pub fn count_by_type(&self, dt: &DefinitionType) -> usize
```

#### 示例

```rust
use nac_udm::registry::{DefinitionRegistry, Definition, UID};

// 创建注册表
let registry = DefinitionRegistry::new();

// 注册定义
registry.register(definition).unwrap();

// 查询定义
let uid = UID::new("nac.l1.cbpp.receipt");
let def = registry.get(&uid).unwrap();
println!("Found: {}", def.name());

// 按标签查询
let cbpp_defs = registry.find_by_tag("cbpp");
println!("Found {} CBPP definitions", cbpp_defs.len());
```

---

## 基础原语类型API

### Address (地址类型)

20字节地址类型，用于标识账户、合约等实体。

#### 数据结构

```rust
pub struct Address([u8; 20]);
```

#### 构造方法

```rust
// 创建新地址
pub fn new(bytes: [u8; 20]) -> Self

// 从切片创建
pub fn from_slice(slice: &[u8]) -> Result<Self, String>

// 从十六进制字符串创建
pub fn from_hex(hex: &str) -> Result<Self, String>

// 零地址
pub fn zero() -> Self
```

#### 查询方法

```rust
// 获取字节数组
pub fn as_bytes(&self) -> &[u8; 20]

// 转换为十六进制字符串
pub fn to_hex(&self) -> String

// 是否为零地址
pub fn is_zero(&self) -> bool
```

#### 示例

```rust
use nac_udm::primitives::Address;

// 创建地址
let addr = Address::from_hex("0x1234567890123456789012345678901234567890").unwrap();

// 查询
assert!(!addr.is_zero());
assert_eq!(addr.to_hex(), "0x1234567890123456789012345678901234567890");
```

---

### Hash (哈希类型)

32字节哈希类型（SHA256），用于标识交易、区块等。

#### 数据结构

```rust
pub struct Hash([u8; 32]);
```

#### 构造方法

```rust
// 创建新哈希
pub fn new(bytes: [u8; 32]) -> Self

// 从切片创建
pub fn from_slice(slice: &[u8]) -> Result<Self, String>

// 从十六进制字符串创建
pub fn from_hex(hex: &str) -> Result<Self, String>

// 计算SHA256哈希
pub fn sha256(data: &[u8]) -> Self

// 零哈希
pub fn zero() -> Self
```

#### 查询方法

```rust
// 获取字节数组
pub fn as_bytes(&self) -> &[u8; 32]

// 转换为十六进制字符串
pub fn to_hex(&self) -> String

// 是否为零哈希
pub fn is_zero(&self) -> bool
```

#### 示例

```rust
use nac_udm::primitives::Hash;

// 计算哈希
let data = b"Hello, NAC!";
let hash = Hash::sha256(data);

// 查询
assert!(!hash.is_zero());
println!("Hash: {}", hash.to_hex());
```

---

### Timestamp (时间戳类型)

Unix时间戳类型（u64秒级精度）。

#### 数据结构

```rust
pub struct Timestamp(u64);
```

#### 构造方法

```rust
// 当前时间
pub fn now() -> Self

// 从秒数创建
pub fn from_secs(secs: u64) -> Self
```

#### 查询方法

```rust
// 获取秒数
pub fn as_secs(&self) -> u64

// 是否过期
pub fn is_expired(&self, current: u64) -> bool
```

#### 时间操作

```rust
// 增加秒数
pub fn add_secs(&self, secs: u64) -> Self

// 减少秒数
pub fn sub_secs(&self, secs: u64) -> Self
```

#### 示例

```rust
use nac_udm::primitives::Timestamp;

// 当前时间
let now = Timestamp::now();

// 时间操作
let future = now.add_secs(3600); // 1小时后
let past = now.sub_secs(3600);   // 1小时前

// 过期检查
assert!(!future.is_expired(now.as_secs()));
assert!(past.is_expired(now.as_secs()));
```

---

### Signature (签名类型)

数字签名类型（可变长度）。

#### 数据结构

```rust
pub struct Signature(Vec<u8>);
```

#### 构造方法

```rust
// 创建新签名
pub fn new(bytes: Vec<u8>) -> Self

// 从切片创建
pub fn from_slice(slice: &[u8]) -> Self

// 从十六进制字符串创建
pub fn from_hex(hex: &str) -> Result<Self, String>

// 空签名
pub fn empty() -> Self
```

#### 查询方法

```rust
// 获取字节数组
pub fn as_bytes(&self) -> &[u8]

// 转换为十六进制字符串
pub fn to_hex(&self) -> String

// 是否为空
pub fn is_empty(&self) -> bool

// 获取长度
pub fn len(&self) -> usize
```

#### 示例

```rust
use nac_udm::primitives::Signature;

// 创建签名
let sig = Signature::from_hex("0x1234...").unwrap();

// 查询
assert!(!sig.is_empty());
println!("Signature length: {}", sig.len());
```

---

## L2宪法治理层API

### ConstitutionalClause (宪法条款)

宪法条款定义。

#### 数据结构

```rust
pub struct ConstitutionalClause {
    pub clause_id: u32,
    pub title: String,
    pub content: String,
    pub version: String,
    pub active: bool,
}
```

---

### NetworkRule (网络规则)

网络规则定义。

#### 数据结构

```rust
pub struct NetworkRule {
    pub rule_id: u32,
    pub rule_type: RuleType,
    pub description: String,
    pub parameters: Vec<(String, String)>,
}

pub enum RuleType {
    Connection,    // 连接规则
    Propagation,   // 传播规则
    Validation,    // 验证规则
    Penalty,       // 惩罚规则
}
```

---

### CrossChainRelayNode (跨链中继节点)

跨链中继节点授权。

#### 数据结构

```rust
pub struct CrossChainRelayNode {
    pub node_address: Address,
    pub authorized_chains: Vec<String>,
    pub stake_amount: u128,
    pub reputation_score: u8,
}
```

---

### PenaltyRecord (惩罚记录)

惩罚条款记录。

#### 数据结构

```rust
pub struct PenaltyRecord {
    pub violator: Address,
    pub violation_type: ViolationType,
    pub penalty_amount: u128,
    pub timestamp: u64,
}

pub enum ViolationType {
    InvalidBlock,      // 无效区块
    DoubleSpend,       // 双花攻击
    MaliciousRelay,    // 恶意中继
    RuleViolation,     // 规则违反
}
```

---

## L1多链协议层API

### CBPP模块

#### ConstitutionalReceipt (宪法收据)

宪法收据，交易进入区块链的唯一门票。

**数据结构**:

```rust
pub struct ConstitutionalReceipt {
    pub receipt_id: Hash,
    pub transaction_hash: Hash,
    pub constitutional_hash: Hash,
    pub clause_index: u32,
    pub execution_result_hash: Hash,
    pub timestamp: Timestamp,
    pub validity_window: u64,
    pub validator_signature: Signature,
    pub validation_types: Vec<ValidationType>,
    pub validation_results: Vec<ValidationResult>,
}

pub enum ValidationType {
    KYC,                  // 身份验证
    AML,                  // 反洗钱
    AssetValuation,       // 资产估值
    Compliance,           // 合规性
    Custody,              // 托管验证
    Collateral,           // 抵押验证
    Insurance,            // 保险验证
    Governance,           // 治理验证
}

pub struct ValidationResult {
    pub validation_type: ValidationType,
    pub passed: bool,
    pub score: u8,
    pub validator: Address,
    pub timestamp: Timestamp,
}
```

**构造方法**:

```rust
pub fn new(
    transaction_hash: Hash,
    constitutional_hash: Hash,
    clause_index: u32,
    execution_result_hash: Hash,
    timestamp: Timestamp,
    validity_window: u64,
    validator_signature: Signature,
) -> Self
```

**验证方法**:

```rust
// 验证收据是否有效
pub fn is_valid(&self, current_timestamp: u64) -> bool

// 验证收据是否过期
pub fn is_expired(&self, current_timestamp: u64) -> bool

// 计算收据ID
pub fn calculate_receipt_id(&self) -> Hash

// 添加验证结果
pub fn add_validation_result(&mut self, result: ValidationResult)

// 获取验证通过率
pub fn validation_pass_rate(&self) -> f64

// 计算收据权重
pub fn calculate_weight(&self) -> u64
```

**示例**:

```rust
use nac_udm::l1_protocol::cbpp::*;
use nac_udm::primitives::*;

// 创建宪法收据
let receipt = ConstitutionalReceipt::new(
    tx_hash,
    const_hash,
    1,
    result_hash,
    Timestamp::now(),
    3600,
    signature,
);

// 添加验证结果
receipt.add_validation_result(ValidationResult {
    validation_type: ValidationType::KYC,
    passed: true,
    score: 95,
    validator: validator_addr,
    timestamp: Timestamp::now(),
});

// 验证收据
if receipt.is_valid(Timestamp::now().as_secs()) {
    println!("Receipt is valid!");
    println!("Pass rate: {:.2}%", receipt.validation_pass_rate() * 100.0);
}
```

---

#### FluidBlock (流体区块)

流体区块，支持DAG结构的三维坐标系统。

**数据结构**:

```rust
pub struct FluidBlock {
    pub coordinates: BlockCoordinates,
    pub parent_hashes: Vec<Hash>,
    pub transactions: Vec<TransactionWithReceipt>,
    pub timestamp: Timestamp,
    pub producer: Address,
    pub signature: Signature,
    pub capacity: u64,
    pub used_capacity: u64,
}

pub struct BlockCoordinates {
    pub epoch: u64,
    pub round: u64,
    pub branch: u64,
}

pub struct TransactionWithReceipt {
    pub transaction: Transaction,
    pub receipt: ConstitutionalReceipt,
}
```

**构造方法**:

```rust
pub fn new(
    coordinates: BlockCoordinates,
    parent_hashes: Vec<Hash>,
    producer: Address,
) -> Self
```

**区块操作**:

```rust
// 添加交易
pub fn add_transaction(&mut self, tx: TransactionWithReceipt) -> Result<(), String>

// 计算区块哈希
pub fn calculate_hash(&self) -> Hash

// 验证区块
pub fn validate(&self) -> Result<(), String>

// 是否已满
pub fn is_full(&self) -> bool

// 获取容量使用率
pub fn capacity_usage(&self) -> f64
```

---

#### OpenProductionNetwork (开放生产网络)

开放生产网络，管理区块生产者。

**数据结构**:

```rust
pub struct OpenProductionNetwork {
    pub producers: Vec<BlockProducer>,
    pub min_stake: u128,
    pub reputation_threshold: u8,
}

pub struct BlockProducer {
    pub address: Address,
    pub stake: u128,
    pub reputation: u8,
    pub blocks_produced: u64,
    pub last_active: Timestamp,
}
```

**生产者管理**:

```rust
// 添加生产者
pub fn add_producer(&mut self, producer: BlockProducer) -> Result<(), String>

// 移除生产者
pub fn remove_producer(&mut self, address: &Address) -> Result<(), String>

// 获取活跃生产者
pub fn get_active_producers(&self) -> Vec<&BlockProducer>

// 选择生产者
pub fn select_producer(&self, seed: u64) -> Option<&BlockProducer>
```

---

#### GossipProtocol (Gossip协议)

Gossip协议，用于消息传播。

**数据结构**:

```rust
pub struct GossipProtocol {
    pub peers: Vec<Address>,
    pub message_cache: Vec<Hash>,
    pub max_cache_size: usize,
}

pub struct GossipMessage {
    pub message_id: Hash,
    pub content: Vec<u8>,
    pub timestamp: Timestamp,
    pub sender: Address,
}
```

**消息传播**:

```rust
// 广播消息
pub fn broadcast(&self, message: &GossipMessage) -> Vec<Vec<u8>>

// 接收消息
pub fn receive(&mut self, message: GossipMessage) -> bool

// 是否已见过消息
pub fn has_seen(&self, message_id: &Hash) -> bool
```

---

### GNACS模块

#### GNACSCode (GNACS编码)

48位资产分类编码。

**数据结构**:

```rust
pub struct GNACSCode([u8; 6]);
```

**构造方法**:

```rust
// 创建新编码
pub fn new(bytes: [u8; 6]) -> Self

// 从十六进制创建
pub fn from_hex(hex: &str) -> Result<Self, String>

// 从组件创建
pub fn from_components(
    jurisdiction: Jurisdiction,
    asset_category: AssetCategory,
    compliance_level: ComplianceLevel,
    risk_level: RiskLevel,
) -> Self
```

**解析方法**:

```rust
// 获取司法辖区
pub fn jurisdiction(&self) -> Jurisdiction

// 获取资产类别
pub fn asset_category(&self) -> AssetCategory

// 获取合规级别
pub fn compliance_level(&self) -> ComplianceLevel

// 获取风险级别
pub fn risk_level(&self) -> RiskLevel

// 验证编码
pub fn validate(&self) -> bool

// 计算校验和
pub fn checksum(&self) -> u8
```

**格式转换**:

```rust
// 转换为十六进制
pub fn to_hex(&self) -> String

// 转换为人类可读格式
pub fn to_human_readable(&self) -> String
```

**示例**:

```rust
use nac_udm::l1_protocol::gnacs::*;

// 创建GNACS编码
let gnacs = GNACSCode::from_components(
    Jurisdiction::US,
    AssetCategory::RealEstate,
    ComplianceLevel::High,
    RiskLevel::Low,
);

// 解析编码
println!("Jurisdiction: {:?}", gnacs.jurisdiction());
println!("Category: {:?}", gnacs.asset_category());
println!("Compliance: {:?}", gnacs.compliance_level());
println!("Risk: {:?}", gnacs.risk_level());

// 验证
assert!(gnacs.validate());
```

---

#### AssetCategory (资产分类)

11种资产大类。

```rust
pub enum AssetCategory {
    RealEstate,        // 房地产
    Equity,            // 股权
    Debt,              // 债权
    Commodity,         // 商品
    IntellectualProperty, // 知识产权
    ArtCollectible,    // 艺术收藏品
    Vehicle,           // 车辆
    Machinery,         // 机械设备
    Inventory,         // 存货
    FinancialInstrument, // 金融工具
    Other,             // 其他
}
```

---

#### Jurisdiction (司法辖区)

17个司法辖区。

```rust
pub enum Jurisdiction {
    US,    // 美国
    EU,    // 欧盟
    UK,    // 英国
    CN,    // 中国
    JP,    // 日本
    SG,    // 新加坡
    HK,    // 香港
    CH,    // 瑞士
    AE,    // 阿联酋
    AU,    // 澳大利亚
    CA,    // 加拿大
    KR,    // 韩国
    IN,    // 印度
    BR,    // 巴西
    ZA,    // 南非
    MX,    // 墨西哥
    Unknown, // 未知
}
```

---

#### ComplianceLevel (合规级别)

6个合规等级。

```rust
pub enum ComplianceLevel {
    VeryHigh,  // 极高 (100分)
    High,      // 高 (80分)
    Medium,    // 中 (60分)
    Low,       // 低 (40分)
    VeryLow,   // 极低 (20分)
    Unknown,   // 未知 (0分)
}
```

---

#### RiskLevel (风险等级)

6个风险等级。

```rust
pub enum RiskLevel {
    VeryLow,   // 极低 (20分)
    Low,       // 低 (40分)
    Medium,    // 中 (60分)
    High,      // 高 (80分)
    VeryHigh,  // 极高 (100分)
    Unknown,   // 未知 (0分)
}
```

---

### ACC协议族

#### ACC-20 (可替代代币)

**数据结构**:

```rust
pub struct ACC20Token {
    pub name: String,
    pub symbol: String,
    pub decimals: u8,
    pub total_supply: u128,
    pub balances: HashMap<Address, u128>,
    pub allowances: HashMap<Address, HashMap<Address, u128>>,
}
```

**核心方法**:

```rust
// 转账
pub fn transfer(&mut self, from: Address, to: Address, amount: u128) -> Result<(), String>

// 授权
pub fn approve(&mut self, owner: Address, spender: Address, amount: u128) -> Result<(), String>

// 授权转账
pub fn transfer_from(&mut self, spender: Address, from: Address, to: Address, amount: u128) -> Result<(), String>

// 铸造
pub fn mint(&mut self, to: Address, amount: u128) -> Result<(), String>

// 销毁
pub fn burn(&mut self, from: Address, amount: u128) -> Result<(), String>

// 查询余额
pub fn balance_of(&self, account: &Address) -> u128

// 查询授权额度
pub fn allowance(&self, owner: &Address, spender: &Address) -> u128
```

---

#### ACC-721 (不可替代代币)

**数据结构**:

```rust
pub struct ACC721Token {
    pub name: String,
    pub symbol: String,
    pub owners: HashMap<u128, Address>,
    pub balances: HashMap<Address, u128>,
    pub token_approvals: HashMap<u128, Address>,
    pub operator_approvals: HashMap<Address, HashMap<Address, bool>>,
}
```

**核心方法**:

```rust
// 铸造NFT
pub fn mint(&mut self, to: Address, token_id: u128) -> Result<(), String>

// 转移NFT
pub fn transfer(&mut self, from: Address, to: Address, token_id: u128) -> Result<(), String>

// 授权NFT
pub fn approve(&mut self, owner: Address, to: Address, token_id: u128) -> Result<(), String>

// 设置操作员
pub fn set_approval_for_all(&mut self, owner: Address, operator: Address, approved: bool)

// 查询所有者
pub fn owner_of(&self, token_id: u128) -> Option<Address>

// 查询余额
pub fn balance_of(&self, owner: &Address) -> u128

// 销毁NFT
pub fn burn(&mut self, token_id: u128) -> Result<(), String>
```

---

#### ACC-1155 (多代币标准)

**数据结构**:

```rust
pub struct ACC1155Token {
    pub balances: HashMap<Address, HashMap<u128, u128>>,
    pub operator_approvals: HashMap<Address, HashMap<Address, bool>>,
}
```

**核心方法**:

```rust
// 单个转账
pub fn safe_transfer_from(&mut self, from: Address, to: Address, id: u128, amount: u128) -> Result<(), String>

// 批量转账
pub fn safe_batch_transfer_from(&mut self, from: Address, to: Address, ids: Vec<u128>, amounts: Vec<u128>) -> Result<(), String>

// 查询余额
pub fn balance_of(&self, account: &Address, id: u128) -> u128

// 批量查询余额
pub fn balance_of_batch(&self, accounts: Vec<Address>, ids: Vec<u128>) -> Vec<u128>

// 设置操作员
pub fn set_approval_for_all(&mut self, owner: Address, operator: Address, approved: bool)

// 查询操作员
pub fn is_approved_for_all(&self, owner: &Address, operator: &Address) -> bool
```

---

#### ACC-RWA (RWA资产标准)

**数据结构**:

```rust
pub struct RWAAsset {
    pub asset_id: Hash,
    pub gnacs_code: GNACSCode,
    pub owner: Address,
    pub custodian: Address,
    pub valuation: u128,
    pub metadata_uri: String,
    pub constitutional_receipt: Hash,
}
```

**核心方法**:

```rust
// 创建RWA资产
pub fn create(gnacs_code: GNACSCode, owner: Address, custodian: Address) -> Self

// 转移所有权
pub fn transfer_ownership(&mut self, new_owner: Address, receipt: Hash) -> Result<(), String>

// 更新估值
pub fn update_valuation(&mut self, new_valuation: u128, appraiser: Address) -> Result<(), String>

// 验证合规性
pub fn verify_compliance(&self) -> bool
```

---

#### ACC-Compliance (合规协议)

**数据结构**:

```rust
pub struct ComplianceRecord {
    pub entity: Address,
    pub jurisdiction: Jurisdiction,
    pub compliance_level: ComplianceLevel,
    pub kyc_verified: bool,
    pub aml_verified: bool,
    pub accreditation_verified: bool,
    pub verification_date: Timestamp,
    pub expiry_date: Timestamp,
    pub verifier: Address,
    pub document_hash: Hash,
}
```

---

#### ACC-Valuation (估值协议)

**数据结构**:

```rust
pub struct ValuationReport {
    pub asset_id: Hash,
    pub valuation_amount: u128,
    pub currency: String,
    pub valuation_method: String,
    pub appraiser: Address,
    pub report_date: Timestamp,
    pub validity_period: u64,
    pub confidence_score: u8,
    pub report_hash: Hash,
}
```

---

#### ACC-Custody (托管协议)

**数据结构**:

```rust
pub struct CustodyRecord {
    pub asset_id: Hash,
    pub custodian: Address,
    pub owner: Address,
    pub custody_type: CustodyType,
    pub start_date: Timestamp,
    pub end_date: Option<Timestamp>,
    pub terms_hash: Hash,
}

pub enum CustodyType {
    Physical,      // 实物托管
    Digital,       // 数字托管
    Legal,         // 法律托管
    Escrow,        // 第三方托管
}
```

---

#### ACC-Collateral (抵押协议)

**数据结构**:

```rust
pub struct CollateralRecord {
    pub collateral_id: Hash,
    pub asset_id: Hash,
    pub borrower: Address,
    pub lender: Address,
    pub collateral_value: u128,
    pub loan_amount: u128,
    pub ltv_ratio: u8,
    pub start_date: Timestamp,
    pub maturity_date: Timestamp,
}
```

---

#### ACC-Redemption (赎回协议)

**数据结构**:

```rust
pub struct RedemptionRequest {
    pub request_id: Hash,
    pub asset_id: Hash,
    pub requester: Address,
    pub redemption_amount: u128,
    pub request_date: Timestamp,
    pub status: RedemptionStatus,
}

pub enum RedemptionStatus {
    Pending,
    Approved,
    Rejected,
    Completed,
}
```

---

#### ACC-Insurance (保险协议)

**数据结构**:

```rust
pub struct InsurancePolicy {
    pub policy_id: Hash,
    pub asset_id: Hash,
    pub insured: Address,
    pub insurer: Address,
    pub coverage_amount: u128,
    pub premium: u128,
    pub start_date: Timestamp,
    pub end_date: Timestamp,
    pub policy_terms_hash: Hash,
}
```

---

#### ACC-Governance (治理协议)

**数据结构**:

```rust
pub struct GovernanceProposal {
    pub proposal_id: Hash,
    pub proposer: Address,
    pub title: String,
    pub description: String,
    pub voting_start: Timestamp,
    pub voting_end: Timestamp,
    pub votes_for: u128,
    pub votes_against: u128,
    pub status: ProposalStatus,
}

pub enum ProposalStatus {
    Pending,
    Active,
    Passed,
    Rejected,
    Executed,
}
```

---

#### ACC-XTZH (XTZH稳定币协议)

**数据结构**:

```rust
pub struct XTZHToken {
    pub total_supply: u128,
    pub reserve_assets: Vec<ReserveAsset>,
    pub peg_rate: u128,
    pub balances: HashMap<Address, u128>,
}

pub struct ReserveAsset {
    pub asset_type: String,
    pub amount: u128,
    pub value_in_sdr: u128,
}
```

---

#### ACC-Reserve (储备协议)

**数据结构**:

```rust
pub struct ReservePool {
    pub pool_id: Hash,
    pub assets: Vec<ReserveAsset>,
    pub total_value: u128,
    pub manager: Address,
    pub last_audit: Timestamp,
}
```

---

### NVM 2.0模块

#### OpCode (操作码)

350个操作码（225个基础 + 125个RWA专属）。

**数据结构**:

```rust
pub enum OpCode {
    // 基础操作码 (0x00-0xE0)
    STOP = 0x00,
    ADD = 0x01,
    MUL = 0x02,
    // ... 225个基础操作码
    
    // RWA专属操作码 (0xE1-0xFF)
    CR_CREATE = 0xE1,        // 创建宪法收据
    CR_VERIFY = 0xE2,        // 验证宪法收据
    CR_GET = 0xE3,           // 获取宪法收据
    CR_REVOKE = 0xE4,        // 撤销宪法收据
    CR_EXTEND = 0xE5,        // 延长宪法收据
    
    GNACS_ENCODE = 0xE6,     // GNACS编码
    GNACS_DECODE = 0xE7,     // GNACS解码
    GNACS_VALIDATE = 0xE8,   // GNACS验证
    GNACS_CATEGORY = 0xE9,   // 获取资产类别
    GNACS_JURISDICTION = 0xEA, // 获取司法辖区
    
    ACC20_TRANSFER = 0xEB,   // ACC-20转账
    ACC20_APPROVE = 0xEC,    // ACC-20授权
    ACC20_MINT = 0xED,       // ACC-20铸造
    ACC20_BURN = 0xEE,       // ACC-20销毁
    ACC20_BALANCE = 0xEF,    // ACC-20余额查询
    
    ACC721_MINT = 0xF6,      // ACC-721铸造
    ACC721_TRANSFER = 0xF7,  // ACC-721转移
    ACC721_OWNER = 0xF8,     // ACC-721所有者查询
    ACC721_BURN = 0xF9,      // ACC-721销毁
}
```

**方法**:

```rust
// 获取操作码名称
pub fn name(&self) -> &'static str

// 是否是RWA专属操作码
pub fn is_rwa_specific(&self) -> bool

// 从字节创建操作码
pub fn from_u8(byte: u8) -> Option<Self>
```

---

#### Instruction (指令)

**数据结构**:

```rust
pub struct Instruction {
    pub opcode: OpCode,
    pub operands: Vec<u8>,
    pub gas_cost: u64,
}
```

**构造方法**:

```rust
// 创建新指令
pub fn new(opcode: OpCode) -> Self

// 创建带操作数的指令
pub fn with_operands(opcode: OpCode, operands: Vec<u8>) -> Self
```

---

#### GasCalculator (Gas计量)

**方法**:

```rust
// 计算操作码的Gas成本
pub fn calculate(opcode: &OpCode) -> u64
```

**Gas成本表**:

| 操作码类型 | Gas成本 |
|-----------|---------|
| STOP | 0 |
| ADD, SUB | 3 |
| MUL, DIV | 5 |
| SLOAD | 200 |
| SSTORE | 20,000 |
| CR_CREATE | 50,000 |
| CR_VERIFY | 10,000 |
| GNACS_ENCODE | 5,000 |
| ACC20_TRANSFER | 21,000 |

---

## L0 CSNP网络层API

### GIDS (全域身份目录服务)

**数据结构**:

```rust
pub struct GlobalIdentity {
    pub address: Address,
    pub identity_type: IdentityType,
    pub verification_level: u8,
    pub metadata: Vec<(String, String)>,
}

pub enum IdentityType {
    Individual,       // 个人
    Organization,     // 组织
    SmartContract,    // 智能合约
    RelayNode,        // 中继节点
}
```

---

### MA-RCM (多链自适应连接管理器)

**数据结构**:

```rust
pub struct ChainConnection {
    pub chain_id: String,
    pub connection_type: ConnectionType,
    pub latency_ms: u32,
    pub bandwidth_mbps: u32,
}

pub enum ConnectionType {
    Direct,    // 直连
    Relay,     // 中继
    Bridge,    // 桥接
}
```

---

### AA-PE (资产感知传播引擎)

**数据结构**:

```rust
pub struct AssetAwarePropagation {
    pub asset_id: Hash,
    pub priority: u8,
    pub propagation_strategy: PropagationStrategy,
}

pub enum PropagationStrategy {
    Broadcast,  // 广播
    Targeted,   // 定向
    Layered,    // 分层
}
```

---

### FTAN (碎片化交易聚合网络)

**数据结构**:

```rust
pub struct FragmentedTransaction {
    pub tx_id: Hash,
    pub fragments: Vec<TransactionFragment>,
    pub total_fragments: u32,
}

pub struct TransactionFragment {
    pub fragment_id: u32,
    pub data: Vec<u8>,
}
```

---

### UCA (统一跨链审计器)

**数据结构**:

```rust
pub struct CrossChainAuditRecord {
    pub audit_id: Hash,
    pub source_chain: String,
    pub target_chain: String,
    pub transaction_hash: Hash,
    pub auditor: Address,
    pub status: AuditStatus,
}

pub enum AuditStatus {
    Pending,    // 待审计
    Verified,   // 已验证
    Rejected,   // 已拒绝
}
```

---

## 多语言绑定

UDM支持Rust、Go、Charter三种语言的绑定。

### 语言枚举

```rust
pub enum Language {
    Rust,
    Go,
    Charter,
}
```

### 语言绑定

```rust
pub struct LanguageBinding {
    pub code: String,
    pub imports: Vec<String>,
    pub type_mappings: HashMap<String, String>,
}
```

### 类型映射表

| UDM类型 | Rust | Go | Charter |
|---------|------|----|---------| 
| u8 | u8 | uint8 | u8 |
| u64 | u64 | uint64 | u64 |
| u128 | u128 | *big.Int | u128 |
| u256 | U256 | *big.Int | u256 |
| address | Address | [20]byte | address |
| hash | Hash | [32]byte | hash |
| bool | bool | bool | bool |
| string | String | string | string |
| bytes | Vec<u8> | []byte | bytes |

---

## 错误处理

所有可能失败的操作都返回`Result<T, String>`类型。

### 常见错误

| 错误类型 | 描述 |
|---------|------|
| `InvalidAddress` | 无效的地址格式 |
| `InvalidHash` | 无效的哈希格式 |
| `InvalidGNACSCode` | 无效的GNACS编码 |
| `ReceiptExpired` | 宪法收据已过期 |
| `InsufficientBalance` | 余额不足 |
| `UnauthorizedAccess` | 未授权访问 |
| `InvalidSignature` | 无效的签名 |
| `DuplicateDefinition` | 重复的定义 |
| `VersionConflict` | 版本冲突 |

### 错误处理示例

```rust
use nac_udm::primitives::Address;

match Address::from_hex("0xinvalid") {
    Ok(addr) => println!("Address: {}", addr.to_hex()),
    Err(e) => eprintln!("Error: {}", e),
}
```

---

## 版本管理

UDM遵循语义化版本管理（SemVer 2.0.0）。

### 版本号格式

```
MAJOR.MINOR.PATCH[-PRE_RELEASE][+BUILD_METADATA]
```

### 版本兼容性规则

- **主版本号（MAJOR）**: 不兼容的API变更
- **次版本号（MINOR）**: 向后兼容的功能新增
- **补丁版本号（PATCH）**: 向后兼容的问题修复

### 版本查询

```rust
use nac_udm::VERSION;

println!("UDM Version: {}", VERSION);
```

---

## 附录

### A. 完整的模块清单

| 模块 | 描述 | UID前缀 |
|------|------|---------|
| registry | 核心注册表系统 | nac.registry |
| primitives | 基础原语类型 | nac.primitives |
| l2_governance | L2宪法治理层 | nac.l2 |
| l1_protocol | L1多链协议层 | nac.l1 |
| l0_native | L0 CSNP网络层 | nac.l0 |

### B. 完整的ACC协议清单

| 协议 | 描述 | UID |
|------|------|-----|
| ACC-20 | 可替代代币 | nac.l1.acc.acc20 |
| ACC-721 | 不可替代代币 | nac.l1.acc.acc721 |
| ACC-1155 | 多代币标准 | nac.l1.acc.acc1155 |
| ACC-RWA | RWA资产标准 | nac.l1.acc.rwa |
| ACC-Compliance | 合规协议 | nac.l1.acc.compliance |
| ACC-Valuation | 估值协议 | nac.l1.acc.valuation |
| ACC-Custody | 托管协议 | nac.l1.acc.custody |
| ACC-Collateral | 抵押协议 | nac.l1.acc.collateral |
| ACC-Redemption | 赎回协议 | nac.l1.acc.redemption |
| ACC-Insurance | 保险协议 | nac.l1.acc.insurance |
| ACC-Governance | 治理协议 | nac.l1.acc.governance |
| ACC-XTZH | XTZH稳定币协议 | nac.l1.acc.xtzh |
| ACC-Reserve | 储备协议 | nac.l1.acc.reserve |

### C. 完整的NVM操作码清单

详见[NVM 2.0模块](#nvm-20模块)章节。

### D. 参考资源

- NAC官方网站: https://newassetchain.io
- NAC技术白皮书: https://docs.newassetchain.io/whitepaper
- UDM GitHub仓库: https://github.com/newassetchain/nac-udm
- CSNP协议规范: https://docs.newassetchain.io/csnp
- CBPP共识协议: https://docs.newassetchain.io/cbpp
- GNACS编码标准: https://docs.newassetchain.io/gnacs

---

**文档结束**

**版本**: 1.0.0  
**最后更新**: 2025-02-07  
**维护者**: NAC公链开发小组  
**许可证**: MIT License