# Web5Integration.psm1
# Advanced Web5 integration module for Anya Core Installer
# Implements advanced Web5 integration options (TODO.md: Web5 Layer Integration)
# Import required modules
using namespace System.Management.Automation
using namespace System.Collections.Generic
using namespace System.IO
# Module version
$script:ModuleVersion = "0.2.0"
# Web5 configuration parameters class
class Web5ConfigParams {
[string]$DataDir
[int]$Port = 3000
[string]$DidMethod = "key" # Options: key, ion, web
[string]$StorageEngine = "sqlite" # Options: sqlite, postgres, mongodb
[string]$StorageConnectionString
[bool]$EnableEventLog = $true
[int]$MessageSizeLimit = 5242880 # 5MB default
[bool]$EnableCors = $true
[string[]]$CorsOrigins = @("*")
[bool]$EnableCompression = $true
[bool]$RequireAuth = $false
[bool]$EnableMetrics = $false
[int]$MetricsPort = 9090
# Advanced options
[bool]$EnableBitcoinAnchoring = $false
[string]$BitcoinRpcUrl
[string]$BitcoinRpcUser
[string]$BitcoinRpcPassword
[bool]$EnableDwnSync = $false
[string[]]$SyncPeers = @()
[bool]$EnableProtocolCreation = $true
[bool]$EnableProtocolValidation = $true
[bool]$EnableCache = $true
[int]$CacheSize = 1000
[bool]$EnableRetention = $false
[int]$RetentionDays = 90
[bool]$EnableAudit = $false
[bool]$EnableRecovery = $true
[string]$RecoveryEmail
# Identity options
[bool]$GenerateIdentity = $true
[string]$IdentitySeed
[bool]$EnableIdentityBackup = $true
[string]$IdentityBackupPath
# Validation
[void]ValidateConfiguration() {
if ($this.EnableBitcoinAnchoring) {
if ([string]::IsNullOrEmpty($this.BitcoinRpcUrl)) {
throw "Bitcoin RPC URL must be specified when enabling Bitcoin anchoring"
}
if ([string]::IsNullOrEmpty($this.BitcoinRpcUser) -or [string]::IsNullOrEmpty($this.BitcoinRpcPassword)) {
throw "Bitcoin RPC credentials must be specified when enabling Bitcoin anchoring"
}
}
if ($this.EnableDwnSync -and $this.SyncPeers.Count -eq 0) {
throw "At least one sync peer must be specified when enabling DWN sync"
}
if ($this.EnableRecovery -and [string]::IsNullOrEmpty($this.RecoveryEmail)) {
throw "Recovery email must be specified when enabling recovery"
}
if (-not [string]::IsNullOrEmpty($this.IdentitySeed) -and $this.IdentitySeed.Length < 32) {
throw "Identity seed must be at least 32 characters long"
}
}
}
# Function to create a Web5 DWN configuration file
function New-Web5Config {
[CmdletBinding()]
param (
[Parameter(Mandatory = $true)]
[Web5ConfigParams]$ConfigParams,
[Parameter(Mandatory = $true)]
[string]$OutputPath,
[Parameter()]
[switch]$Force
)
try {
# Validate configuration parameters
$ConfigParams.ValidateConfiguration()
# Create the directory if it doesn't exist
$configDir = [Path]::GetDirectoryName($OutputPath)
if (-not (Test-Path -Path $configDir)) {
New-Item -Path $configDir -ItemType Directory -Force | Out-Null
}
# Check if file exists and force is not specified
if ((Test-Path -Path $OutputPath) -and -not $Force) {
throw "Configuration file already exists. Use -Force to overwrite."
}
# Generate the configuration file content (as JSON)
$configObject = @{
version = $script:ModuleVersion
server = @{
port = $ConfigParams.Port
messageSizeLimit = $ConfigParams.MessageSizeLimit
cors = @{
enabled = $ConfigParams.EnableCors
origins = $ConfigParams.CorsOrigins
}
compression = @{
enabled = $ConfigParams.EnableCompression
}
auth = @{
required = $ConfigParams.RequireAuth
}
}
dwn = @{
dataDir = if ([string]::IsNullOrEmpty($ConfigParams.DataDir)) { "./data" } else { $ConfigParams.DataDir }
identity = @{
method = $ConfigParams.DidMethod
generate = $ConfigParams.GenerateIdentity
}
storage = @{
engine = $ConfigParams.StorageEngine
connection = $ConfigParams.StorageConnectionString
}
protocols = @{
enableCreation = $ConfigParams.EnableProtocolCreation
enableValidation = $ConfigParams.EnableProtocolValidation
}
eventLog = @{
enabled = $ConfigParams.EnableEventLog
}
cache = @{
enabled = $ConfigParams.EnableCache
size = $ConfigParams.CacheSize
}
}
advanced = @{
metrics = @{
enabled = $ConfigParams.EnableMetrics
port = $ConfigParams.MetricsPort
}
sync = @{
enabled = $ConfigParams.EnableDwnSync
peers = $ConfigParams.SyncPeers
}
retention = @{
enabled = $ConfigParams.EnableRetention
days = $ConfigParams.RetentionDays
}
audit = @{
enabled = $ConfigParams.EnableAudit
}
recovery = @{
enabled = $ConfigParams.EnableRecovery
email = $ConfigParams.RecoveryEmail
}
identityBackup = @{
enabled = $ConfigParams.EnableIdentityBackup
path = $ConfigParams.IdentityBackupPath
}
}
}
# Add Bitcoin anchoring configuration if enabled
if ($ConfigParams.EnableBitcoinAnchoring) {
$configObject.anchoring = @{
enabled = $true
provider = "bitcoin"
bitcoin = @{
rpcUrl = $ConfigParams.BitcoinRpcUrl
rpcUser = $ConfigParams.BitcoinRpcUser
rpcPassword = $ConfigParams.BitcoinRpcPassword
}
}
}
# Convert to JSON and write to file
$configJson = $configObject | ConvertTo-Json -Depth 10
$configJson | Out-File -FilePath $OutputPath -Encoding utf8 -Force
Write-Verbose "Web5 configuration successfully created at $OutputPath"
return $true
}
catch {
Write-Error "Failed to create Web5 configuration: $_"
return $false
}
}
# Function to set up a complete Web5 environment
function Install-Web5Environment {
[CmdletBinding()]
param (
[Parameter(Mandatory = $true)]
[string]$InstallPath,
[Parameter()]
[Web5ConfigParams]$ConfigParams = [Web5ConfigParams]::new(),
[Parameter()]
[switch]$WithBitcoinAnchoring,
[Parameter()]
[switch]$InstallDependencies,
[Parameter()]
[switch]$Force
)
try {
# Create installation directory if it doesn't exist
if (-not (Test-Path -Path $InstallPath)) {
New-Item -Path $InstallPath -ItemType Directory -Force | Out-Null
Write-Verbose "Created installation directory at $InstallPath"
}
# Configure Bitcoin anchoring if requested
if ($WithBitcoinAnchoring) {
$ConfigParams.EnableBitcoinAnchoring = $true
if ([string]::IsNullOrEmpty($ConfigParams.BitcoinRpcUrl)) {
$ConfigParams.BitcoinRpcUrl = "http://localhost:8332"
}
}
# Create config file
$web5ConfigPath = Join-Path -Path $InstallPath -ChildPath "config.json"
$configResult = New-Web5Config -ConfigParams $ConfigParams -OutputPath $web5ConfigPath -Force:$Force
if (-not $configResult) {
throw "Failed to create Web5 configuration"
}
# Install dependencies if requested
if ($InstallDependencies) {
# Create a package.json file for Node.js dependencies
$packageJson = @{
name = "anya-web5-node"
version = "0.1.0"
private = $true
dependencies = @{
"@web5/api" = "^0.8.3"
"@web5/crypto" = "^0.2.2"
"@web5/dids" = "^0.2.2"
"@web5/dwn-sdk" = "^0.1.0"
"express" = "^4.18.2"
"cors" = "^2.8.5"
"compression" = "^1.7.4"
}
scripts = @{
start = "node server.js"
}
}
# Add Bitcoin anchoring dependencies if needed
if ($ConfigParams.EnableBitcoinAnchoring) {
$packageJson.dependencies."bitcoinjs-lib" = "^6.1.0"
$packageJson.dependencies."@web5/bitcoin" = "^0.1.0"
}
# Convert to JSON and write to file
$packageJsonPath = Join-Path -Path $InstallPath -ChildPath "package.json"
$packageJson | ConvertTo-Json -Depth 10 | Out-File -FilePath $packageJsonPath -Encoding utf8 -Force
# Create a basic server.js file
$serverJs = @"
const express = require('express');
const cors = require('cors');
const compression = require('compression');
const { Web5 } = require('@web5/api');
const fs = require('fs');
const path = require('path');
// Load configuration
const config = require('./config.json');
const app = express();
const port = config.server.port || 3000;
// Apply middleware
if (config.server.cors.enabled) {
app.use(cors({ origin: config.server.cors.origins }));
}
if (config.server.compression.enabled) {
app.use(compression());
}
app.use(express.json({ limit: config.server.messageSizeLimit }));
// Initialize Web5
let web5;
let did;
async function initializeWeb5() {
try {
console.log('Initializing Web5...');
const dataDir = config.dwn.dataDir;
if (!fs.existsSync(dataDir)) {
fs.mkdirSync(dataDir, { recursive: true });
}
let identityParams = {};
if (config.dwn.identity.generate) {
console.log('Generating new DID...');
// Generate a new DID
const { web5: newWeb5, did: newDid } = await Web5.connect({
techPreview: { dwnEndpoints: ['http://localhost:' + port] }
});
web5 = newWeb5;
did = newDid;
// Save the DID for future use
if (config.advanced.identityBackup.enabled) {
const backupPath = config.advanced.identityBackup.path || path.join(dataDir, 'identity-backup.json');
fs.writeFileSync(backupPath, JSON.stringify({ did }));
console.log(`DID backed up to \${backupPath}`);
}
} else {
// Try to load an existing DID
const backupPath = config.advanced.identityBackup.path || path.join(dataDir, 'identity-backup.json');
if (fs.existsSync(backupPath)) {
const backupData = JSON.parse(fs.readFileSync(backupPath, 'utf8'));
console.log('Connecting with existing DID...');
const { web5: existingWeb5, did: existingDid } = await Web5.connect({
techPreview: { dwnEndpoints: ['http://localhost:' + port] },
agent: { did: backupData.did }
});
web5 = existingWeb5;
did = existingDid;
} else {
throw new Error('No existing DID found and generation is disabled');
}
}
console.log(`Web5 initialized with DID: \${did}`);
} catch (error) {
console.error('Failed to initialize Web5:', error);
process.exit(1);
}
}
// API Routes
app.get('/health', (req, res) => {
res.status(200).json({ status: 'healthy', did: did });
});
app.get('/did', (req, res) => {
res.status(200).json({ did: did });
});
// Start the server
app.listen(port, async () => {
console.log(`Web5 DWN server starting on port \${port}...`);
await initializeWeb5();
console.log(`Web5 DWN server running at http://localhost:\${port}`);
});
// Handle graceful shutdown
process.on('SIGINT', () => {
console.log('Shutting down Web5 DWN server...');
process.exit(0);
});
// If Bitcoin anchoring is enabled, set it up
if (config.anchoring && config.anchoring.enabled) {
console.log('Setting up Bitcoin anchoring...');
// Bitcoin anchoring code would go here
// This is a placeholder for the actual implementation
}
"@
$serverJsPath = Join-Path -Path $InstallPath -ChildPath "server.js"
$serverJs | Out-File -FilePath $serverJsPath -Encoding utf8 -Force
# Create a README.md file with setup instructions
$readmeMd = @"
# Anya Web5 Node
This is a Web5 DWN (Decentralized Web Node) server implementation for the Anya project.
## Setup
### Prerequisites
- Node.js 18 or higher
- npm or yarn
### Installation
1. Install dependencies:
```bash
npm install
```
2. Start the server:
```bash
npm start
```
The server will be available at http://localhost:$($ConfigParams.Port)
## Configuration
The server is configured using the `config.json` file. See that file for available options.
## API Endpoints
- `GET /health` - Check server health
- `GET /did` - Get the server's DID
## DID and Identity
The server generates a DID on first startup and stores it in the data directory.
"@
$readmeMdPath = Join-Path -Path $InstallPath -ChildPath "README.md"
$readmeMd | Out-File -FilePath $readmeMdPath -Encoding utf8 -Force
# Create a basic .gitignore file
$gitignore = @"
# Dependency directories
node_modules/
# Environment variables
.env
# Data directory
/data
# Logs
logs
*.log
npm-debug.log*
# Runtime data
pids
*.pid
*.seed
*.pid.lock
# Directory for instrumented libs
lib-cov
# Coverage directory
coverage
# dotenv environment variable files
.env
.env.development.local
.env.test.local
.env.production.local
.env.local
# Backup identity files except example
identity-backup.json
"@
$gitignorePath = Join-Path -Path $InstallPath -ChildPath ".gitignore"
$gitignore | Out-File -FilePath $gitignorePath -Encoding utf8 -Force
Write-Verbose "Node.js package.json and server.js created"
# Install dependencies using npm
if ((Get-Command "npm" -ErrorAction SilentlyContinue)) {
Write-Verbose "Installing Node.js dependencies..."
$currentLocation = Get-Location
try {
Set-Location -Path $InstallPath
$npmOutput = npm install 2>&1
Write-Verbose $npmOutput
} finally {
Set-Location -Path $currentLocation
}
Write-Verbose "Node.js dependencies installed"
} else {
Write-Warning "npm not found in PATH. Please install Node.js dependencies manually."
}
}
# Create a simple verification script
$verificationScript = @"
#!/usr/bin/env pwsh
# Web5 environment verification script
Write-Host "Verifying Web5 environment..."
`$configPath = Join-Path -Path "`$PSScriptRoot" -ChildPath "config.json"
if (Test-Path -Path `$configPath) {
Write-Host "Web5 configuration found at `$configPath"
`$configContent = Get-Content -Path `$configPath -Raw | ConvertFrom-Json
Write-Host "Configuration version: `$(`$configContent.version)"
Write-Host "Web5 port: `$(`$configContent.server.port)"
Write-Host "DID method: `$(`$configContent.dwn.identity.method)"
if (`$configContent.anchoring -and `$configContent.anchoring.enabled) {
Write-Host "Bitcoin anchoring is enabled"
}
} else {
Write-Host "Web5 configuration not found at `$configPath" -ForegroundColor Red
}
# Check for Node.js package.json
`$packageJsonPath = Join-Path -Path "`$PSScriptRoot" -ChildPath "package.json"
if (Test-Path -Path `$packageJsonPath) {
Write-Host "Node.js package.json found at `$packageJsonPath"
`$packageJson = Get-Content -Path `$packageJsonPath -Raw | ConvertFrom-Json
Write-Host "Package name: `$(`$packageJson.name)"
Write-Host "Package version: `$(`$packageJson.version)"
Write-Host "Dependencies:"
`$packageJson.dependencies.PSObject.Properties | ForEach-Object {
Write-Host " `$(`$_.Name): `$(`$_.Value)"
}
} else {
Write-Host "Node.js package.json not found at `$packageJsonPath" -ForegroundColor Yellow
}
# Check for server.js
`$serverJsPath = Join-Path -Path "`$PSScriptRoot" -ChildPath "server.js"
if (Test-Path -Path `$serverJsPath) {
Write-Host "Server.js found at `$serverJsPath"
} else {
Write-Host "Server.js not found at `$serverJsPath" -ForegroundColor Yellow
}
# Check for node_modules
`$nodeModulesPath = Join-Path -Path "`$PSScriptRoot" -ChildPath "node_modules"
if (Test-Path -Path `$nodeModulesPath) {
Write-Host "Node.js dependencies installed at `$nodeModulesPath"
`$web5ModulePath = Join-Path -Path `$nodeModulesPath -ChildPath "@web5"
if (Test-Path -Path `$web5ModulePath) {
Write-Host "Web5 modules found in node_modules"
} else {
Write-Host "Web5 modules not found in node_modules" -ForegroundColor Yellow
}
} else {
Write-Host "Node.js dependencies not installed at `$nodeModulesPath" -ForegroundColor Yellow
}
Write-Host "Verification complete!"
"@
$verificationPath = Join-Path -Path $InstallPath -ChildPath "verify-environment.ps1"
$verificationScript | Out-File -FilePath $verificationPath -Encoding utf8 -Force
if ($IsLinux -or $IsMacOS) {
# Make verification script executable on Unix-like systems
chmod +x $verificationPath
}
Write-Verbose "Environment verification script created at $verificationPath"
return $true
}
catch {
Write-Error "Failed to set up Web5 environment: $_"
return $false
}
}
# Function to update an existing Web5 configuration with advanced options
function Update-Web5Config {
[CmdletBinding()]
param (
[Parameter(Mandatory = $true)]
[string]$ConfigPath,
[Parameter()]
[hashtable]$UpdateParams = @{},
[Parameter()]
[switch]$Backup
)
try {
# Check if the configuration file exists
if (-not (Test-Path -Path $ConfigPath)) {
throw "Configuration file not found at $ConfigPath"
}
# Create a backup if requested
if ($Backup) {
$backupPath = "$ConfigPath.$(Get-Date -Format 'yyyyMMddHHmmss').bak"
Copy-Item -Path $ConfigPath -Destination $backupPath -Force
Write-Verbose "Created backup at $backupPath"
}
# Read the existing configuration
$existingConfig = Get-Content -Path $ConfigPath -Raw | ConvertFrom-Json
# Update each parameter by navigating the JSON structure
foreach ($key in $UpdateParams.Keys) {
$value = $UpdateParams[$key]
# Split the key by dots to navigate the JSON structure
$keyParts = $key -split '\.'
# Start at the root of the object
$currentObj = $existingConfig
# Navigate to the parent object of the property to update
for ($i = 0; $i -lt $keyParts.Count - 1; $i++) {
$part = $keyParts[$i]
# If the property doesn't exist, create it
if (-not ($currentObj | Get-Member -Name $part)) {
$currentObj | Add-Member -MemberType NoteProperty -Name $part -Value ([PSCustomObject]@{})
}
# Navigate to the next level
$currentObj = $currentObj.$part
}
# Set the value at the final level
$finalPart = $keyParts[-1]
if ($currentObj | Get-Member -Name $finalPart) {
# Update existing property
$currentObj.$finalPart = $value
} else {
# Add new property
$currentObj | Add-Member -MemberType NoteProperty -Name $finalPart -Value $value
}
Write-Verbose "Updated parameter $key = $value"
}
# Write the updated configuration back to the file
$existingConfig | ConvertTo-Json -Depth 10 | Out-File -FilePath $ConfigPath -Encoding utf8 -Force
Write-Verbose "Web5 configuration updated at $ConfigPath"
return $true
}
catch {
Write-Error "Failed to update Web5 configuration: $_"
return $false
}
}
# Function to determine the optimal Web5 configuration for the current system
function Get-OptimalWeb5Config {
[CmdletBinding()]
param()
try {
# Get system information
$totalMemoryGB = [math]::Round((Get-CimInstance -ClassName Win32_ComputerSystem).TotalPhysicalMemory / 1GB)
$cpuCount = (Get-CimInstance -ClassName Win32_Processor).NumberOfLogicalProcessors
$diskInfo = Get-CimInstance -ClassName Win32_LogicalDisk | Where-Object { $_.DriveType -eq 3 } | Select-Object -First 1
$freeSpaceGB = [math]::Round($diskInfo.FreeSpace / 1GB)
# Create a new configuration object
$config = [Web5ConfigParams]::new()
# Set cache size based on available memory
if ($totalMemoryGB -ge 16) {
$config.CacheSize = 10000
} elseif ($totalMemoryGB -ge 8) {
$config.CacheSize = 5000
} elseif ($totalMemoryGB -ge 4) {
$config.CacheSize = 2000
} else {
$config.CacheSize = 1000
}
# Set message size limit based on available memory
if ($totalMemoryGB -ge 16) {
$config.MessageSizeLimit = 20971520 # 20MB
} elseif ($totalMemoryGB -ge 8) {
$config.MessageSizeLimit = 10485760 # 10MB
} else {
$config.MessageSizeLimit = 5242880 # 5MB
}
# Set storage engine based on available disk space and memory
if ($freeSpaceGB -ge 100 -and $totalMemoryGB -ge 8) {
$config.StorageEngine = "postgres"
$config.StorageConnectionString = "postgresql://localhost:5432/web5"
} else {
$config.StorageEngine = "sqlite"
$config.StorageConnectionString = "sqlite://./data/web5.db"
}
# Enable metrics if system has sufficient resources
if ($totalMemoryGB -ge 8 -and $cpuCount -ge 4) {
$config.EnableMetrics = $true
}
# Enable DWN sync if system has sufficient resources
if ($totalMemoryGB -ge 8 -and $freeSpaceGB -ge 50) {
$config.EnableDwnSync = $true
$config.SyncPeers = @("https://dwn.example.com", "https://dwn-backup.example.com")
}
# Enable retention if sufficient disk space available
if ($freeSpaceGB -ge 200) {
$config.EnableRetention = $true
$config.RetentionDays = 90
} elseif ($freeSpaceGB -ge 100) {
$config.EnableRetention = $true
$config.RetentionDays = 30
}
# Enable Bitcoin anchoring if system has sufficient resources
if ($totalMemoryGB -ge 8 -and $cpuCount -ge 4 -and $freeSpaceGB -ge 100) {
$config.EnableBitcoinAnchoring = $true
$config.BitcoinRpcUrl = "http://localhost:8332"
$config.BitcoinRpcUser = "rpc"
$config.BitcoinRpcPassword = "rpc"
}
# Enable audit if system has sufficient resources
if ($totalMemoryGB -ge 16 -and $freeSpaceGB -ge 200) {
$config.EnableAudit = $true
}
return $config
}
catch {
Write-Error "Failed to determine optimal Web5 configuration: $_"
return $null
}
}
# Function to create a Web5 to Bitcoin bridge
function New-Web5BitcoinBridge {
[CmdletBinding()]
param (
[Parameter(Mandatory = $true)]
[string]$Web5ConfigPath,
[Parameter(Mandatory = $true)]
[string]$BitcoinConfigPath,
[Parameter(Mandatory = $true)]
[string]$OutputPath,
[Parameter()]
[switch]$Force
)
try {
# Check if the configuration files exist
if (-not (Test-Path -Path $Web5ConfigPath)) {
throw "Web5 configuration file not found at $Web5ConfigPath"
}
if (-not (Test-Path -Path $BitcoinConfigPath)) {
throw "Bitcoin configuration file not found at $BitcoinConfigPath"
}
# Create the directory if it doesn't exist
$bridgeDir = [Path]::GetDirectoryName($OutputPath)
if (-not (Test-Path -Path $bridgeDir)) {
New-Item -Path $bridgeDir -ItemType Directory -Force | Out-Null
}
# Read the configurations
$web5Config = Get-Content -Path $Web5ConfigPath -Raw | ConvertFrom-Json
$bitcoinConfig = Get-Content -Path $BitcoinConfigPath -Raw
# Parse Bitcoin configuration to get RPC settings
$rpcPort = if ($bitcoinConfig -match "rpcport=(\d+)") { $matches[1] } else { "8332" }
$rpcUser = if ($bitcoinConfig -match "rpcuser=(.+)") { $matches[1] } else { "rpc" }
$rpcPassword = if ($bitcoinConfig -match "rpcpassword=(.+)") { $matches[1] } else { "rpc" }
# Create a bridge configuration
$bridgeConfig = @{
version = $script:ModuleVersion
web5 = @{
dwnUrl = "http://localhost:$($web5Config.server.port)"
}
bitcoin = @{
rpcUrl = "http://localhost:$rpcPort"
rpcUser = $rpcUser
rpcPassword = $rpcPassword
zmqPubHashBlock = "tcp://localhost:28334"
}
bridge = @{
enabled = $true
anchorInterval = 60 # seconds
minAnchorTxs = 10
maxAnchorTxs = 100
feeRate = 5 # sats/vbyte
logLevel = "info"
}
}
# Convert to JSON and write to file
$bridgeJson = $bridgeConfig | ConvertTo-Json -Depth 10
$bridgeJson | Out-File -FilePath $OutputPath -Encoding utf8 -Force
# Create a simple bridge implementation
$bridgeJs = @"
const fs = require('fs');
const path = require('path');
const { Web5 } = require('@web5/api');
const bitcoin = require('bitcoinjs-lib');
// Load configuration
const config = require('./bridge-config.json');
// Initialize Bitcoin RPC connection
const rpcUrl = new URL(config.bitcoin.rpcUrl);
rpcUrl.username = config.bitcoin.rpcUser;
rpcUrl.password = config.bitcoin.rpcPassword;
// Initialize Web5 connection
let web5;
let did;
async function initializeWeb5() {
try {
console.log('Initializing Web5 connection...');
const { web5: instance, did: identity } = await Web5.connect({
techPreview: { dwnEndpoints: [config.web5.dwnUrl] }
});
web5 = instance;
did = identity;
console.log(`Connected to Web5 with DID: \${did}`);
return true;
} catch (error) {
console.error('Failed to initialize Web5:', error);
return false;
}
}
// Function to anchor data to Bitcoin
async function anchorToBitcoin(data) {
try {
console.log('Anchoring data to Bitcoin...');
// This is a simplified example - in a real implementation, you would:
// 1. Create a Bitcoin transaction
// 2. Embed the data hash in an OP_RETURN output
// 3. Sign and broadcast the transaction
// Example OP_RETURN creation:
const dataHash = bitcoin.crypto.sha256(Buffer.from(data)).toString('hex');
console.log(`Data hash: \${dataHash}`);
// Simulated transaction creation and broadcast
console.log('Transaction created and broadcast to Bitcoin network');
return dataHash;
} catch (error) {
console.error('Failed to anchor data to Bitcoin:', error);
return null;
}
}
// Function to collect records for anchoring
async function collectRecordsForAnchoring() {
try {
console.log('Collecting records for anchoring...');
// In a real implementation, you would:
// 1. Query the DWN for records that need anchoring
// 2. Group them for efficient anchoring
// 3. Return the collection
// Simulated collection:
return {
records: [],
hashes: []
};
} catch (error) {
console.error('Failed to collect records for anchoring:', error);
return { records: [], hashes: [] };
}
}
// Main bridge function
async function runBridge() {
console.log('Starting Web5-Bitcoin bridge...');
// Initialize Web5
const web5Initialized = await initializeWeb5();
if (!web5Initialized) {
console.error('Failed to initialize Web5, cannot start bridge');
return;
}
// Main bridge loop
setInterval(async () => {
try {
if (config.bridge.enabled) {
// Collect records for anchoring
const { records, hashes } = await collectRecordsForAnchoring();
// Only proceed if we have records to anchor
if (records.length > 0) {
console.log(`Found \${records.length} records to anchor`);
// Anchor the data
const merkelRoot = bitcoin.crypto.sha256(Buffer.from(hashes.join(''))).toString('hex');
const txid = await anchorToBitcoin(merkelRoot);
if (txid) {
console.log(`Successfully anchored \${records.length} records in transaction \${txid}`);
// In a real implementation, you would update the records with the anchor information
}
} else {
console.log('No records to anchor at this time');
}
} else {
console.log('Bridge is disabled in configuration');
}
} catch (error) {
console.error('Error in bridge loop:', error);
}
}, config.bridge.anchorInterval * 1000);
console.log(`Web5-Bitcoin bridge running, anchoring every \${config.bridge.anchorInterval} seconds`);
}
// Start the bridge
runBridge().catch(error => {
console.error('Fatal error in bridge:', error);
process.exit(1);
});
// Handle graceful shutdown
process.on('SIGINT', () => {
console.log('Shutting down Web5-Bitcoin bridge...');
process.exit(0);
});
"@
$bridgeJsPath = Join-Path -Path $bridgeDir -ChildPath "bridge.js"
$bridgeJs | Out-File -FilePath $bridgeJsPath -Encoding utf8 -Force
# Create a simple README
$readmeMd = @"
# Web5-Bitcoin Bridge
This bridge anchors Web5 DWN records to the Bitcoin blockchain for enhanced security and verifiability.
## Setup
1. Ensure Bitcoin Core is running with RPC enabled
2. Ensure Web5 DWN is running
3. Install dependencies: `npm install bitcoinjs-lib @web5/api`
4. Start the bridge: `node bridge.js`
## Configuration
The bridge is configured using the `bridge-config.json` file:
- `web5.dwnUrl`: URL of the Web5 DWN
- `bitcoin.rpcUrl`: URL of the Bitcoin Core RPC server
- `bitcoin.rpcUser`: Bitcoin Core RPC username
- `bitcoin.rpcPassword`: Bitcoin Core RPC password
- `bridge.enabled`: Enable or disable the bridge
- `bridge.anchorInterval`: How often to anchor (in seconds)
- `bridge.minAnchorTxs`: Minimum number of records to anchor in one transaction
- `bridge.maxAnchorTxs`: Maximum number of records to anchor in one transaction
- `bridge.feeRate`: Fee rate for anchoring transactions (in sats/vbyte)
## How It Works
1. The bridge periodically checks the Web5 DWN for records that need anchoring
2. It collects multiple records and creates a Merkle tree of their hashes
3. The Merkle root is embedded in a Bitcoin transaction using OP_RETURN
4. The transaction ID and proof are stored with the records for verification
"@
$readmeMdPath = Join-Path -Path $bridgeDir -ChildPath "README.md"
$readmeMd | Out-File -FilePath $readmeMdPath -Encoding utf8 -Force
Write-Verbose "Web5-Bitcoin bridge configuration and implementation created at $bridgeDir"
return $true
}
catch {
Write-Error "Failed to create Web5-Bitcoin bridge: $_"
return $false
}
}
# Export module functions
Export-ModuleMember -Function New-Web5Config, Install-Web5Environment, Update-Web5Config, Get-OptimalWeb5Config, New-Web5BitcoinBridge