miden-poc-backend

Wind is developing a private 1-to-n payment solution using Miden's zero-knowledge (ZK) technology, enabling efficient, private payments to multiple recipients. It will integrate into Wind’s existing payment infrastructure

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Table of Contents

1. Installation
2. Running the Project
3. API Endpoints
   • Create Wallet
   • Transfer Asset
   • Batch Transfer
   • Get Accounts

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Installation

Prerequisites

• Rust (latest stable version)
• SQLite

Clone the Repository

git clone https://github.com/0xavalon/miden-poc-backend.git
cd miden-poc-backend

Running the Project

Install Dependencies

Install Rust dependencies using cargo:

cargo build

Start the Actix Web Server

cargo run

The server will run on http://127.0.0.1:8080

API Endpoints

Create Wallet

Endpoint: GET /create-wallet

Creates a new custodial wallet.

Request

curl --location 'http://127.0.0.1:8080/create-wallet' \
--header 'Content-Type: application/json' \
--request GET

Response

{
    "account_type": "private",
    "wallet_id": "0x80f0e53763f05632"
}

Transfer Asset

Endpoint: POST /transfer

Transfers assets from one wallet to another. Creates notes from sender account to target account.

Request

curl --location 'http://127.0.0.1:8080/transfer' \
--header 'Content-Type: application/json' \
--request POST \
--data '{
    "sender_wallet": "0x12345abcdef",
    "target_wallet": "0x67890fedcba",
    "amount": 100
}'

Response

{
    "tx_id": "0x72e4e1b951d5b33ce3ab6d8368ce09505d1e37fe55073ff934e21f076e44f509",
    "sender_wallet": "0x12345abcdef",
    "target_wallet": "0x67890fedcba",
    "amount": 100
}

Batch Transfer

Endpoint: POST /batch-transfer

Performs multiple transfers in a single API call.

Request

curl --location 'http://127.0.0.1:8080/batch-transfer' \
--header 'Content-Type: application/json' \
--request POST \
--data '{
    "transfers": [
        {
            "sender_wallet": "0x12345abcdef",
            "target_wallet": "0x67890fedcba",
            "amount": 100
        },
        {
            "sender_wallet": "0x54321fedcba",
            "target_wallet": "0x09876abcdef",
            "amount": 200
        }
    ]
}'

Response

{
    "results": [
        {
            "sender_wallet": "0x12345abcdef",
            "target_wallet": "0x67890fedcba",
            "amount": 100,
            "tx_id": "0xabcdef1234567890",
            "error": null
        },
        {
            "sender_wallet": "0x54321fedcba",
            "target_wallet": "0x09876abcdef",
            "amount": 200,
            "tx_id": null,
            "error": "Invalid target wallet address"
        }
    ]
}

Get Accounts

Endpoint: GET /accounts

Fetches all existing accounts with associated balance.

Request

curl --location 'http://127.0.0.1:8080/accounts' \
--header 'Content-Type: application/json' \
--request GET

Response

{
    "accounts": [
        {
            "account_id": "0x82c2ad5c6bcbcfd5",
            "balance": 1000,
            "index": 0
        },
        {
            "account_id": "0x8c4b6a13872cb095",
            "balance": 500,
            "index": 1
        }
    ]
}