ERC20 Token Transfers API | Blockchain Data API (V2)

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Blockchain technology has revolutionized digital asset movement, and Ethereum's ERC20 standard remains one of the most widely adopted frameworks for token transfers. With the growing need for real-time, accurate blockchain data, APIs that enable seamless access to ERC20 transfer information are essential for developers, analysts, and institutions alike. This guide explores how to leverage a powerful Blockchain Data API (V2) to retrieve, analyze, and subscribe to ERC20 token transfers with precision.

Whether you're tracking stablecoin movements like USDT or monitoring top transactions of major tokens like WETH or BNB, this API delivers structured, queryable data using GraphQL — the modern standard for efficient data retrieval.

Retrieve Latest ERC20 Token Transfers

One of the most common use cases is fetching recent ERC20 token transfers. For example, let’s examine USDT transfers on Ethereum. The USDT smart contract address is 0xdac17f958d2ee523a2206206994597c13d831ec7.

Using the API, you can query the 10 most recent transfers ordered by block time:

{
  EVM(dataset: realtime, network: eth) {
    Transfers(
      where: {
        Transfer: {
          Currency: {
            SmartContract: { is: "0xdac17f958d2ee523a2206206994597c13d831ec7" }
          }
        }
      }
      limit: { count: 10 }
      orderBy: { descending: Block_Time }
    ) {
      Transfer {
        Amount
        Currency {
          Name
          Symbol
        }
        Receiver
        Sender
        Type
      }
    }
  }
}

This query returns key details such as transfer amount, sender, receiver, token name, and symbol — all in real time. It’s ideal for dashboards, transaction monitors, or compliance tools requiring up-to-the-second insights.

👉 Discover how to build real-time crypto tracking tools with advanced blockchain queries.

Subscribe to Real-Time ERC20 Transfers via Webhooks

For applications needing live updates — such as fraud detection systems or trading bots — polling isn’t efficient. Instead, use GraphQL subscriptions to receive instant notifications when new ERC20 transfers occur.

Here’s an example subscription for WETH (0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2) transfers:

subscription {
  EVM(network: eth, trigger_on: head) {
    Transfers(
      where: {
        Transfer: {
          Currency: {
            SmartContract: { is: "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2" }
          }
        }
      }
      orderBy: { descending: Block_Time }
    ) {
      Transaction {
        Hash
      }
      Transfer {
        Amount
        Currency {
          Name
          Symbol
        }
        Receiver
        Sender
        Type
      }
    }
  }
}

This setup pushes data to your server via webhook as soon as a matching transfer is confirmed on-chain. Perfect for building reactive systems that act on token movement instantly.

Why Use Subscriptions?

Filter Transfers by Specific Address (Sender or Receiver)

Need to monitor a particular wallet? You can easily filter transfers where a given address is either the sender or receiver using the any operator.

For instance, to find all transfers involving 0x881d40237659c251811cec9c364ef91dc08d300c:

query MyQuery {
  EVM(dataset: combined, network: eth) {
    Transfers(
      where: {
        any: [
          { Transfer: { Sender: { is: "0x881d40237659c251811cec9c364ef91dc08d300c" } } }
          { Transfer: { Receiver: { is: "0x881d40237659c251811cec9c364ef91dc08d300c" } } }
        ]
      }
      limit: { count: 100 }
    ) {
      Transfer {
        Amount
        Sender
        Receiver
        Currency {
          Symbol
          Name
        }
      }
    }
  }
}

This query is useful for auditing individual wallets, tracking inflows/outflows, or analyzing user behavior.

Identify Addresses Interacting with Multiple Wallets

Suppose you want to find addresses that have both sent and received funds from a predefined list of wallets. This can help uncover interconnected entities or detect clusters in on-chain activity.

Using the array_intersect function, you can pinpoint addresses that interacted with every address in your list:

query ($addresses: [String!]!) {
  EVM(dataset: archive) {
    Transfers(
      where: {
        any: [
          { Transfer: { Sender: { in: $addresses } } }
          { Transfer: { Receiver: { in: $addresses } } }
        ]
        Block: { Date: { after: "2024-04-01" } }
      }
    ) {
      array_intersect(
        side1: Transfer_Sender
        side2: Transfer_Receiver
        intersectWith: $addresses
      )
    }
  }
}

# Variables:
{
  "addresses": [
    "0x21743a2efb926033f8c6e0c3554b13a0c669f63f",
    "0x107f308d85d5481f5b729cfb1710532500e40217"
  ]
}

This advanced filtering technique supports forensic analysis, AML investigations, and DeFi protocol monitoring.

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Fetch Top ERC20 Token Transfers by Value

To identify significant market movements, retrieve the largest transfers of a specific token. For example, get the top 10 transfers of BNB (BEP-20 equivalent on Ethereum at 0xB8c77482e45F1F44dE1745F52C74426C631bDD52):

query MyQuery {
  EVM {
    Transfers(
      where: {
        Transfer: {
          Currency: {
            SmartContract: { is: "0xB8c77482e45F1F44dE1745F52C74426C631bDD52" }
          }
        }
        TransactionStatus: { Success: true }
      }
      orderBy: { descending: Transfer_Amount }
      limit: { count: 10 }
    ) {
      Transfer {
        Amount
        AmountInUSD
        Currency {
          Name
          Symbol
          SmartContract
        }
      }
    }
  }
}

The inclusion of AmountInUSD allows valuation in fiat terms, making it easier to assess economic impact.

Core Keywords:

Frequently Asked Questions (FAQ)

Q: Can I use this API to monitor multiple ERC20 tokens at once?
A: Yes. By providing multiple contract addresses in the in: filter or using variables, you can monitor several tokens simultaneously within a single query.

Q: Is historical data available for ERC20 transfers?
A: Absolutely. Use dataset: archive to access full historical records dating back to genesis, ideal for audits and long-term trend analysis.

Q: How fast are real-time updates delivered?
A: With dataset: realtime and subscription-based triggers, updates are pushed within seconds of block confirmation on Ethereum.

Q: Can I filter transfers by date range?
A: Yes. Use the Block.Date field with after, before, or between conditions to restrict results to specific timeframes.

Q: What tokens does this API support?
A: All ERC20-compliant tokens on Ethereum are supported. Simply input the correct smart contract address for accurate results.

Q: Is there rate limiting on queries?
A: Usage depends on your plan tier. Free tiers have limits; higher tiers offer increased throughput and priority access.

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