> ## Documentation Index > Fetch the complete documentation index at: https://docs.blockradar.co/llms.txt > Use this file to discover all available pages before exploring further. # Master Wallet Typed data > This endpoint allows you to sign typed data for a specific wallet identified by its ID. Supports all EIP-712 standards including EIP-3009, EIP-2612, and custom typed data structures. #### Request Body ### Domain Object | Parameter | Type | Required | Description | Example | | --- | --- | --- | --- | --- | | domain.name | string | ✅ | Contract or dApp name | "Blockradar" | | domain.version | string | ✅ | Version of the domain | "1" | | domain.chainId | number | ✅ | Blockchain chain ID | 1 | | domain.verifyingContract | string | ✅ | Contract address | "0xa0b86a33e6441b8c4c8c0c077bcdd28571685701" | | domain.salt | string | ❌ | Optional domain salt (EIP-712 v4) | "0x1234..." | ### Types Object | Parameter | Type | Required | Description | Example | | --- | --- | --- | --- | --- | | types | object | ✅ | EIP-712 type definitions | See examples below | ### Message Object | Parameter | Type | Required | Description | Example | | --- | --- | --- | --- | --- | | message | object | ✅ | Data to be signed | See examples below | ## OpenAPI ````yaml post /v1/wallets/{id}/signing/typed-data openapi: 3.0.3 info: title: Blockradar Documentation description: >- The OpenAPI specification of the Blockradar API that enables fintechs and developers to seamlessly integrate stablecoin deposits and payments into their products. version: 1.0.0 contact: {} servers: - url: https://api.blockradar.co security: - apiKey: [] tags: - name: Rewards description: >- Non-custodial yield (Earn) on stablecoins via regulated (Fija) and DeFi (Aave) strategies. Deposit, withdraw, preview fees, and read positions and earnings at the business, wallet, and sub-address level. Amounts are returned net of the platform fee, which applies only to interest earned. - name: Wallet description: >- Wallet Management System Comprehensive wallet management API for multi-blockchain operations. This system handles wallet creation, configuration, balance monitoring, and integration with various blockchain networks. Core Functionality: - Multi-blockchain wallet creation and management - Balance monitoring and asset tracking - Auto-settlement rule configuration - Gateway wallet integration - Address generation and management - Transaction monitoring and processing - name: Addresses description: >- Address Management System Comprehensive blockchain address management API for operations. This system handles address creation, validation, monitoring, and management across multiple blockchain networks. Core Functionality: - Multi-blockchain address generation - Address validation and verification - Balance monitoring and tracking - Transaction history management - Address labeling and organization - Integration with wallet systems - Real-time address monitoring - name: Asset - name: Transactions - name: Withdraw description: >- The Withdraw feature allows you to programmatically withdraw stablecoins from your master wallet with ease - name: Withdraw Fiat - name: Signing description: >- Typed data signing service for secure transaction authorization. Supports all EIP-712 standards including EIP-3009 (TransferWithAuthorization) and EIP-2612 (Permit). - name: Swap description: >- The Swap feature enables users to exchange one stabelcoin asset for another across different blockchains. This feature provides a seamless way to convert between different stablecoins while maintaining security and compliance standards. - name: Liquidity Pool - name: Virtual Accounts description: >- Virtual Accounts API provides endpoints for managing virtual bank accounts linked to master wallets or child addresses. This API enables businesses to: - Create virtual accounts for customers to receive payments - Retrieve virtual account details - Activate/deactivate virtual accounts **Virtual Account Types:** Virtual accounts support different types with varying behaviors: 1. **AUTO_FUNDING** (Default): - Automatically mints stablecoin when fiat payments are received - Transfers the stablecoin to the linked wallet/address immediately - Best for real-time payment processing **How It Works - Auto-Funding Flow (AUTO_FUNDING type only):** When a customer sends fiat currency to a virtual account with type AUTO_FUNDING: 1. **Payment Receipt**: The payment is received in the virtual account 2. **Automatic Minting**: The system automatically mints the stablecoin equivalent 3. **Blockchain Transfer**: The minted stablecoin is transferred to the virtual account's linked wallet or address **Note**: The auto-funding flow only applies to virtual accounts with type `AUTO_FUNDING`. Other types have different processing behaviors. ## Prerequisites Before creating virtual accounts, ensure: - **Compliance requirements must be completed** (see [Compliance Requirements](http://localhost:3000/essentials/virtual-accounts#compliance-requirements) section below) - **Virtual accounts feature must be enabled** for your business (reach out to [support@blockradar.co](https://mailto:support@blockradar.co) or use live chat on the dashboard to enable the feature after compliance approval) - **Only available on MAINNET environment** (not available on testnet) - **Master Wallet must support stablecoin asset** - Your account plan must include stablecoin access (upgrade from Dashboard → Settings → Subscription if needed) **Supported Currency:** - Fiat: NGN (Nigerian Naira) - Stablecoin: cNGN - minted automatically on blockchain (for AUTO_FUNDING type) - name: Auto Settlements description: >- Creates a new auto settlement rule for a wallet. Auto settlement automatically transfers/swap assets based on configured rules when certain conditions are met. Rules can be configured for: - Source blockchain and assets - Destination blockchain and asset - Amount ranges (min/max) - Slippage tolerance - Gateway vs non-gateway wallets Gateway rules are required for testnet wallets and must have matching source/destination assets. - name: Smart Contract description: >- This API provides endpoints for interacting with smart contracts on the blockchain. It allows for reading contract data, executing contract functions, and estimating network fees. - name: Gateway description: >- The Gateway feature enables you to programmatically deposit USDC into a unified, chain-abstracted balance and instantly mint USDC on any supported blockchain, streamlining crosschain transfers and eliminating manual bridging steps and rebalancing complexities. - name: Payment Links description: >- The Payment Pages API provides a quick and secure way to collect payment for servcies. - name: Beneficiaries description: >- This API allows you to create beneficiaries with automatic settlements to your external wallets on a periodic basis. Example frequencies: INSTANT, DAILY, WEEKLY, MONTHLY, YEARLY - name: AML description: >- The AML (Anti Money Laundering) API provides a quick way for you to check if an address is blacklisted or sanctioned - name: Asset Recovery description: >- Enables the recovery (salvage) of both native blockchain assets and tokens from a specified sender address to a recipient address. This feature supports emergency fund recovery and asset consolidation operations. - name: Miscellaneous description: >- The Miscellaneous API are supporting APIs that can be used to provide more details to other APIs. - name: Asset1 - name: Blockchain - name: Webhooks description: >- Webhooks allow you to set up a notification system that can be used to receive updates on certain requests made to the Blockradar API. To see full list and instructions [https://docs.blockradar.co/essentials/webhooks](https://docs.blockradar.co/essentials/webhooks) ## - name: Deposit - name: Withdraw1 - name: Swap1 - name: Gateway1 paths: /v1/wallets/{id}/signing/typed-data: parameters: - name: id in: path required: true schema: type: string example: YOUR_WALLET_ID post: tags: - Signing summary: Master Wallet Typed data description: >- This endpoint allows you to sign typed data for a specific wallet identified by its ID. Supports all EIP-712 standards including EIP-3009, EIP-2612, and custom typed data structures. #### Request Body ### Domain Object | Parameter | Type | Required | Description | Example | | --- | --- | --- | --- | --- | | domain.name | string | ✅ | Contract or dApp name | "Blockradar" | | domain.version | string | ✅ | Version of the domain | "1" | | domain.chainId | number | ✅ | Blockchain chain ID | 1 | | domain.verifyingContract | string | ✅ | Contract address | "0xa0b86a33e6441b8c4c8c0c077bcdd28571685701" | | domain.salt | string | ❌ | Optional domain salt (EIP-712 v4) | "0x1234..." | ### Types Object | Parameter | Type | Required | Description | Example | | --- | --- | --- | --- | --- | | types | object | ✅ | EIP-712 type definitions | See examples below | ### Message Object | Parameter | Type | Required | Description | Example | | --- | --- | --- | --- | --- | | message | object | ✅ | Data to be signed | See examples below | operationId: masterWalletTypedData requestBody: content: application/json: schema: type: object properties: domain: type: object properties: chainId: type: number example: 11155111 name: type: string example: USD Coin verifyingContract: type: string example: '0xa0b86a33e6441b8c4c8c0c077bcdd28571685701' version: type: string example: '2' message: type: object properties: deadline: type: string example: '1641081600' nonce: type: string example: '0' owner: type: string example: '0x742d35cc6634c0532925a3b8d4c9db96c4b4d8b6' spender: type: string example: '0x8ba1f109551bd432803012645aac136c4c8c8c0c' value: type: string example: '1000000000' types: type: object properties: Permit: type: array items: type: object properties: name: type: string example: owner type: type: string example: address example: - name: owner type: address - name: spender type: address - name: value type: uint256 - name: nonce type: uint256 - name: deadline type: uint256 examples: Master Wallet Typed data: value: domain: chainId: 11155111 name: USD Coin verifyingContract: '0xa0b86a33e6441b8c4c8c0c077bcdd28571685701' version: '2' message: deadline: '1641081600' nonce: '0' owner: '0x742d35cc6634c0532925a3b8d4c9db96c4b4d8b6' spender: '0x8ba1f109551bd432803012645aac136c4c8c8c0c' value: '1000000000' types: Permit: - name: owner type: address - name: spender type: address - name: value type: uint256 - name: nonce type: uint256 - name: deadline type: uint256 responses: '200': description: EIP-712 / EIP-3009 / EIP-2612 content: application/json: schema: type: object properties: data: type: object properties: amlScreening: type: object properties: {} amount: nullable: true example: null amountPaid: nullable: true example: null amountUSD: type: string example: '0.00' asset: nullable: true example: null assetSwept: nullable: true example: null assetSweptAmount: nullable: true example: null assetSweptAt: nullable: true example: null assetSweptGasFee: nullable: true example: null assetSweptHash: nullable: true example: null assetSweptRecipientAddress: nullable: true example: null assetSweptSenderAddress: nullable: true example: null blockHash: nullable: true example: null blockNumber: nullable: true example: null blockchain: type: object properties: createdAt: type: string example: '2024-05-14T21:53:33.095Z' derivationPath: type: string example: m/44'/60'/0'/0 id: type: string example: 85ffc132-3972-4c9e-99a5-5cf0ccb688bf isActive: type: boolean example: true isEvmCompatible: type: boolean example: true isL2: type: boolean example: false name: type: string example: ethereum slug: type: string example: ethereum symbol: type: string example: eth tokenStandard: type: string example: ERC20 updatedAt: type: string example: '2024-11-26T23:04:13.936Z' chainId: nullable: true example: null confirmations: nullable: true example: null confirmed: type: boolean example: true createdAt: type: string example: '2025-10-07T22:58:08.766Z' createdChannel: type: string example: dashboard currency: type: string example: USD fee: nullable: true example: null feeHash: nullable: true example: null gasFee: nullable: true example: null gasPrice: nullable: true example: null gasUsed: nullable: true example: null hash: type: string example: >- 0xdb095e6cbf235d630cee43e0953e60c351e46897bc4e65abfce3e975810e21335aa3918399dac1e01badb2dc8c59c171e65d0c328c92737de702da9d76b889b31b id: type: string example: 770f9100-7338-4823-b1ce-3658fc67db09 metadata: nullable: true example: null network: type: string example: testnet note: nullable: true example: null rate: nullable: true example: null rateUSD: type: string example: '0.00' reason: nullable: true example: null recipientAddress: type: string example: '0x947514e4B803e312C312da0F1B41fEDdbe15ae7a' reference: type: string example: OznFZsh1SMlTBgUaEpM senderAddress: type: string example: '0x947514e4B803e312C312da0F1B41fEDdbe15ae7a' signedTransaction: type: object properties: r: type: string example: >- 0xdb095e6cbf235d630cee43e0953e60c351e46897bc4e65abfce3e975810e2133 s: type: string example: >- 0x5aa3918399dac1e01badb2dc8c59c171e65d0c328c92737de702da9d76b889b3 signature: type: string example: >- 0xdb095e6cbf235d630cee43e0953e60c351e46897bc4e65abfce3e975810e21335aa3918399dac1e01badb2dc8c59c171e65d0c328c92737de702da9d76b889b31b v: type: number example: 27 status: type: string example: SUCCESS toAmount: nullable: true example: null toCurrency: nullable: true example: null tokenAddress: nullable: true example: null type: type: string example: SIGNED updatedAt: type: string example: '2025-10-07T22:58:08.766Z' wallet: type: object properties: address: type: string example: '0x947514e4B803e312C312da0F1B41fEDdbe15ae7a' configurations: type: object properties: addresses: type: object properties: isActive: type: boolean example: true prefunding: type: object properties: isActive: type: boolean example: true rules: type: array items: {} example: [] autoSettlement: type: object properties: isActive: type: boolean example: true rules: type: array items: type: object properties: createdAt: type: string example: '2025-09-10T14:41:12.126Z' destination: type: object properties: address: type: string example: >- 0x2455eC6700092991Ce0782365A89d5Cd89c8Fa22 asset: type: string example: USDC blockchain: type: string example: ethereum id: type: string example: fb841522-ac48-41f5-ab77-9744571b9c46 isActive: type: boolean example: true isGateway: type: boolean example: false name: type: string example: 'Settle to an external address ' order: type: string example: RECOMMENDED slippageTolerance: type: string example: '5' source: type: object properties: assets: type: array items: type: string example: USDC example: - USDC blockchain: type: string example: ethereum maxAmount: type: string example: '10000' minAmount: type: string example: '1' updatedAt: type: string example: '2025-09-10T14:41:12.126Z' example: - createdAt: '2025-09-10T14:41:12.126Z' destination: address: >- 0x2455eC6700092991Ce0782365A89d5Cd89c8Fa22 asset: USDC blockchain: ethereum id: fb841522-ac48-41f5-ab77-9744571b9c46 isActive: true isGateway: false name: 'Settle to an external address ' order: RECOMMENDED slippageTolerance: '5' source: assets: - USDC blockchain: ethereum maxAmount: '10000' minAmount: '1' updatedAt: '2025-09-10T14:41:12.126Z' createdAt: type: string example: '2024-08-22T19:48:56.322Z' derivationPath: type: string example: m/44'/60'/0'/0/0 description: type: string example: This is ethereum testnet master wallet id: type: string example: d236a191-c1d4-423c-a439-54ce6542ca41 isActive: type: boolean example: true name: type: string example: Ethereum Master Wallet network: type: string example: testnet status: type: string example: ACTIVE updatedAt: type: string example: '2025-09-15T23:06:08.009Z' message: type: string example: Typed data signed successfully statusCode: type: number example: 200 examples: EIP-2612: value: data: amlScreening: {} amount: null amountPaid: null amountUSD: '0.00' asset: null assetSwept: null assetSweptAmount: null assetSweptAt: null assetSweptGasFee: null assetSweptHash: null assetSweptRecipientAddress: null assetSweptSenderAddress: null blockHash: null blockNumber: null blockchain: createdAt: '2024-05-14T21:53:33.095Z' derivationPath: m/44'/60'/0'/0 id: 85ffc132-3972-4c9e-99a5-5cf0ccb688bf isActive: true isEvmCompatible: true isL2: false name: ethereum slug: ethereum symbol: eth tokenStandard: ERC20 updatedAt: '2024-11-26T23:04:13.936Z' chainId: null confirmations: null confirmed: true createdAt: '2025-10-07T22:58:08.766Z' createdChannel: dashboard currency: USD fee: null feeHash: null gasFee: null gasPrice: null gasUsed: null hash: >- 0xdb095e6cbf235d630cee43e0953e60c351e46897bc4e65abfce3e975810e21335aa3918399dac1e01badb2dc8c59c171e65d0c328c92737de702da9d76b889b31b id: 770f9100-7338-4823-b1ce-3658fc67db09 metadata: null network: testnet note: null rate: null rateUSD: '0.00' reason: null recipientAddress: '0x947514e4B803e312C312da0F1B41fEDdbe15ae7a' reference: OznFZsh1SMlTBgUaEpM senderAddress: '0x947514e4B803e312C312da0F1B41fEDdbe15ae7a' signedTransaction: r: >- 0xdb095e6cbf235d630cee43e0953e60c351e46897bc4e65abfce3e975810e2133 s: >- 0x5aa3918399dac1e01badb2dc8c59c171e65d0c328c92737de702da9d76b889b3 signature: >- 0xdb095e6cbf235d630cee43e0953e60c351e46897bc4e65abfce3e975810e21335aa3918399dac1e01badb2dc8c59c171e65d0c328c92737de702da9d76b889b31b v: 27 status: SUCCESS toAmount: null toCurrency: null tokenAddress: null type: SIGNED updatedAt: '2025-10-07T22:58:08.766Z' wallet: address: '0x947514e4B803e312C312da0F1B41fEDdbe15ae7a' configurations: addresses: isActive: true prefunding: isActive: true rules: [] autoSettlement: isActive: true rules: - createdAt: '2025-09-10T14:41:12.126Z' destination: address: '0x2455eC6700092991Ce0782365A89d5Cd89c8Fa22' asset: USDC blockchain: ethereum id: fb841522-ac48-41f5-ab77-9744571b9c46 isActive: true isGateway: false name: 'Settle to an external address ' order: RECOMMENDED slippageTolerance: '5' source: assets: - USDC blockchain: ethereum maxAmount: '10000' minAmount: '1' updatedAt: '2025-09-10T14:41:12.126Z' createdAt: '2024-08-22T19:48:56.322Z' derivationPath: m/44'/60'/0'/0/0 description: This is ethereum testnet master wallet id: d236a191-c1d4-423c-a439-54ce6542ca41 isActive: true name: Ethereum Master Wallet network: testnet status: ACTIVE updatedAt: '2025-09-15T23:06:08.009Z' message: Typed data signed successfully statusCode: 200 EIP-3009: value: data: amlScreening: {} amount: null amountPaid: null amountUSD: '0.00' asset: null assetSwept: null assetSweptAmount: null assetSweptAt: null assetSweptGasFee: null assetSweptHash: null assetSweptRecipientAddress: null assetSweptSenderAddress: null blockHash: null blockNumber: null blockchain: createdAt: '2024-05-14T21:53:33.095Z' derivationPath: m/44'/60'/0'/0 id: 85ffc132-3972-4c9e-99a5-5cf0ccb688bf isActive: true isEvmCompatible: true isL2: false name: ethereum slug: ethereum symbol: eth tokenStandard: ERC20 updatedAt: '2024-11-26T23:04:13.936Z' chainId: null confirmations: null confirmed: true createdAt: '2025-10-07T22:58:08.766Z' createdChannel: dashboard currency: USD fee: null feeHash: null gasFee: null gasPrice: null gasUsed: null hash: >- 0xdb095e6cbf235d630cee43e0953e60c351e46897bc4e65abfce3e975810e21335aa3918399dac1e01badb2dc8c59c171e65d0c328c92737de702da9d76b889b31b id: 770f9100-7338-4823-b1ce-3658fc67db09 metadata: null network: testnet note: null rate: null rateUSD: '0.00' reason: null recipientAddress: '0x947514e4B803e312C312da0F1B41fEDdbe15ae7a' reference: OznFZsh1SMlTBgUaEpM senderAddress: '0x947514e4B803e312C312da0F1B41fEDdbe15ae7a' signedTransaction: r: >- 0xdb095e6cbf235d630cee43e0953e60c351e46897bc4e65abfce3e975810e2133 s: >- 0x5aa3918399dac1e01badb2dc8c59c171e65d0c328c92737de702da9d76b889b3 signature: >- 0xdb095e6cbf235d630cee43e0953e60c351e46897bc4e65abfce3e975810e21335aa3918399dac1e01badb2dc8c59c171e65d0c328c92737de702da9d76b889b31b v: 27 status: SUCCESS toAmount: null toCurrency: null tokenAddress: null type: SIGNED updatedAt: '2025-10-07T22:58:08.766Z' wallet: address: '0x947514e4B803e312C312da0F1B41fEDdbe15ae7a' configurations: addresses: isActive: true prefunding: isActive: true rules: [] autoSettlement: isActive: true rules: - createdAt: '2025-09-10T14:41:12.126Z' destination: address: '0x2455eC6700092991Ce0782365A89d5Cd89c8Fa22' asset: USDC blockchain: ethereum id: fb841522-ac48-41f5-ab77-9744571b9c46 isActive: true isGateway: false name: 'Settle to an external address ' order: RECOMMENDED slippageTolerance: '5' source: assets: - USDC blockchain: ethereum maxAmount: '10000' minAmount: '1' updatedAt: '2025-09-10T14:41:12.126Z' createdAt: '2024-08-22T19:48:56.322Z' derivationPath: m/44'/60'/0'/0/0 description: This is ethereum testnet master wallet id: d236a191-c1d4-423c-a439-54ce6542ca41 isActive: true name: Ethereum Master Wallet network: testnet status: ACTIVE updatedAt: '2025-09-15T23:06:08.009Z' message: Typed data signed successfully statusCode: 200 EIP-712: value: data: amlScreening: {} amount: null amountPaid: null amountUSD: '0.00' asset: null assetSwept: null assetSweptAmount: null assetSweptAt: null assetSweptGasFee: null assetSweptHash: null assetSweptRecipientAddress: null assetSweptSenderAddress: null blockHash: null blockNumber: null blockchain: createdAt: '2024-05-14T21:53:33.095Z' derivationPath: m/44'/60'/0'/0 id: 85ffc132-3972-4c9e-99a5-5cf0ccb688bf isActive: true isEvmCompatible: true isL2: false name: ethereum slug: ethereum symbol: eth tokenStandard: ERC20 updatedAt: '2024-11-26T23:04:13.936Z' chainId: null confirmations: null confirmed: true createdAt: '2025-10-07T22:58:08.766Z' createdChannel: dashboard currency: USD fee: null feeHash: null gasFee: null gasPrice: null gasUsed: null hash: >- 0xdb095e6cbf235d630cee43e0953e60c351e46897bc4e65abfce3e975810e21335aa3918399dac1e01badb2dc8c59c171e65d0c328c92737de702da9d76b889b31b id: 770f9100-7338-4823-b1ce-3658fc67db09 metadata: null network: testnet note: null rate: null rateUSD: '0.00' reason: null recipientAddress: '0x947514e4B803e312C312da0F1B41fEDdbe15ae7a' reference: OznFZsh1SMlTBgUaEpM senderAddress: '0x947514e4B803e312C312da0F1B41fEDdbe15ae7a' signedTransaction: r: >- 0xdb095e6cbf235d630cee43e0953e60c351e46897bc4e65abfce3e975810e2133 s: >- 0x5aa3918399dac1e01badb2dc8c59c171e65d0c328c92737de702da9d76b889b3 signature: >- 0xdb095e6cbf235d630cee43e0953e60c351e46897bc4e65abfce3e975810e21335aa3918399dac1e01badb2dc8c59c171e65d0c328c92737de702da9d76b889b31b v: 27 status: SUCCESS toAmount: null toCurrency: null tokenAddress: null type: SIGNED updatedAt: '2025-10-07T22:58:08.766Z' wallet: address: '0x947514e4B803e312C312da0F1B41fEDdbe15ae7a' configurations: addresses: isActive: true prefunding: isActive: true rules: [] autoSettlement: isActive: true rules: - createdAt: '2025-09-10T14:41:12.126Z' destination: address: '0x2455eC6700092991Ce0782365A89d5Cd89c8Fa22' asset: USDC blockchain: ethereum id: fb841522-ac48-41f5-ab77-9744571b9c46 isActive: true isGateway: false name: 'Settle to an external address ' order: RECOMMENDED slippageTolerance: '5' source: assets: - USDC blockchain: ethereum maxAmount: '10000' minAmount: '1' updatedAt: '2025-09-10T14:41:12.126Z' createdAt: '2024-08-22T19:48:56.322Z' derivationPath: m/44'/60'/0'/0/0 description: This is ethereum testnet master wallet id: d236a191-c1d4-423c-a439-54ce6542ca41 isActive: true name: Ethereum Master Wallet network: testnet status: ACTIVE updatedAt: '2025-09-15T23:06:08.009Z' message: Typed data signed successfully statusCode: 200 components: securitySchemes: apiKey: type: apiKey name: x-api-key in: header ````