> ## Documentation Index
> Fetch the complete documentation index at: https://docs.indexing.co/llms.txt
> Use this file to discover all available pages before exploring further.

# Track Wallet Flows Across EVM Chains

In this step-by-step guide, we'll show you how to build a pipeline in **The Neighborhood**, the distributed data network built by The Indexing Company, that monitors wallet flows from 117 known Binance addresses and streams all related token transfers into your own database or webhook.

By the end of this tutorial, you’ll be able to:

* Track wallet or contract flows across **any EVM chain**
* Stream token transfer data into **PostgreSQL**, **webhooks**, or other destinations
* Apply filters to specific wallets, tokens, or transfer amounts
* Backfill historical data on demand

🔑 To get started, you’ll need an API key. You can request access at [indexing.co/contact](https://indexing.co/contact) or by emailing us at [hello@indexing.co](mailto:hello@indexing.co).

# Step 1: Create a Wallet Filter

This filter targets 117 known Binance wallets. You can replace these addresses with your own list if you want to track different wallets, smart contracts, or entities.

Don’t worry about (your) size! The Neighborhood supports **filters with over millions of addresses easily**.

```bash theme={null}
curl --location 'https://app.indexing.co/dw/filters/binance_addresses' \
--header 'x-api-key: YOUR_API_KEY' \
--header 'content-type: application/json' \
--data '{"values": ["0x3f5ce5fbfe3e9af3971dd833d26ba9b5c936f0be","0xd551234ae421e3bcba99a0da6d736074f22192ff","0x564286362092d8e7936f0549571a803b203aaced","0x0681d8db095565fe8a346fa0277bffde9c0edbbf","0xfe9e8709d3215310075d67e3ed32a380ccf451c8","0x4e9ce36e442e55ecd9025b9a6e0d88485d628a67","0xbe0eb53f46cd790cd13851d5eff43d12404d33e8","0xf977814e90da44bfa03b6295a0616a897441acec","0x001866ae5b3de6caa5a51543fd9fb64f524f5478","0x85b931a32a0725be14285b66f1a22178c672d69b","0x708396f17127c42383e3b9014072679b2f60b82f","0xe0f0cfde7ee664943906f17f7f14342e76a5cec7","0x8f22f2063d253846b53609231ed80fa571bc0c8f","0x28c6c06298d514db089934071355e5743bf21d60","0x21a31ee1afc51d94c2efccaa2092ad1028285549","0xdfd5293d8e347dfe59e90efd55b2956a1343963d","0x56eddb7aa87536c09ccc2793473599fd21a8b17f","0x9696f59e4d72e237be84ffd425dcad154bf96976","0x4d9ff50ef4da947364bb9650892b2554e7be5e2b","0x4976a4a02f38326660d17bf34b431dc6e2eb2327","0xd88b55467f58af508dbfdc597e8ebd2ad2de49b3","0x7dfe9a368b6cf0c0309b763bb8d16da326e8f46e","0x345d8e3a1f62ee6b1d483890976fd66168e390f2","0xc3c8e0a39769e2308869f7461364ca48155d1d9e","0x2e581a5ae722207aa59acd3939771e7c7052dd3d","0x44592b81c05b4c35efb8424eb9d62538b949ebbf","0xa344c7ada83113b3b56941f6e85bf2eb425949f3","0x5a52e96bacdabb82fd05763e25335261b270efcb","0x06a0048079ec6571cd1b537418869cde6191d42d","0x892e9e24aea3f27f4c6e9360e312cce93cc98ebe","0x00799bbc833d5b168f0410312d2a8fd9e0e3079c","0x141fef8cd8397a390afe94846c8bd6f4ab981c48","0x50d669f43b484166680ecc3670e4766cdb0945ce","0x2f7e209e0f5f645c7612d7610193fe268f118b28","0xd9d93951896b4ef97d251334ef2a0e39f6f6d7d7","0x19184ab45c40c2920b0e0e31413b9434abd243ed","0x294b9b133ca7bc8ed2cdd03ba661a4c6d3a834d9","0x5d7f34372fa8708e09689d400a613eee67f75543","0x515b72ed8a97f42c568d6a143232775018f133c8","0x631fc1ea2270e98fbd9d92658ece0f5a269aa161","0xbd612a3f30dca67bf60a39fd0d35e39b7ab80774","0x161ba15a5f335c9f06bb5bbb0a9ce14076fbb645","0x3c783c21a0383057d128bae431894a5c19f9cf06","0xe7804c37c13166ff0b37f5ae0bb07a3aebb6e245","0x9f8c163cba728e99993abe7495f06c0a3c8ac8b9","0xb1256d6b31e4ae87da1d56e5890c66be7f1c038e","0x8894e0a0c962cb723c1976a4421c95949be2d4e3","0x01c952174c24e1210d26961d456a77a39e1f0bb0","0x082489a616ab4d46d1947ee3f912e080815b08da","0xb38e8c17e38363af6ebdcb3dae12e0243582891d","0xacd03d601e5bb1b275bb94076ff46ed9d753435a","0x1b5b4e441f5a22bfd91b7772c780463f66a74b35","0x17b692ae403a8ff3a3b2ed7676cf194310dde9af","0x8ff804cc2143451f454779a40de386f913dcff20","0xad9ffffd4573b642959d3b854027735579555cbc","0x7a8a34db9acd10c3b6277473b192fe47192569ca","0x1d40b233cdf2cc0cdc347d5401d5b02c2831a0c1","0x4fabb145d64652a948d72533023f6e7a623c7c53","0xf2de20dbf4b224af77aa4ff446f43318800bd6b4","0x7ab33ad1e91ddf6d5edf69a79d5d97a9c49015d4","0x4d072a68d0428a9a3054e03ad7ee61c557b537ab","0x1763f1a93815ee6e6bc3c4475d31cc9570716db2","0x972bed5493f7e7bdc760265fbb4d8e73ea89e453","0x290275e3db66394c52272398959845170e4dcb88","0x505e71695e9bc45943c58adec1650577bca68fd9","0x001ceb373c83ae75b9f5cf78fc2aba3e185d09e2","0x07b664c8af37eddaa7e3b6030ed1f494975e9dfb","0x0e4158c85ff724526233c1aeb4ff6f0c46827fbe","0xb32e9a84ae0b55b8ab715e4ac793a61b277bafa3","0xa7c0d36c4698981fab42a7d8c783674c6fe2592d","0xa84fd90d8640fa63d194601e0b2d1c9094297083","0x3304e22ddaa22bcdc5fca2269b418046ae7b566a","0x923fc76cb13a14e5a87843d309c9f401ec498e2d","0x3cdfb47b0e910d9190ed788726cd72489bf10499","0x417850c1cd0fb428eb63649e9dc4c78ede9a34e8","0x4a9e49a45a4b2545cb177f79c7381a30e1dc261f","0x4aefa39caeadd662ae31ab0ce7c8c2c9c0a013e8","0x87917d879ba83ce3ada6e02d49a10c1ec1988062","0x7aed074ca56f5050d5a2e512ecc5bf7103937d76","0x835678a611b28684005a5e2233695fb6cbbb0007","0x6d8be5cdf0d7dee1f04e25fd70b001ae3b907824","0x7e278a68a35d76a7e4b2c9d8b778acd775c6d832","0x6be5a267b04e9f24cdc1824fd38d63c436be91ab","0xeb25df7c79a85640c4420680461dcdfd91f0dfad","0x3931dab967c3e2dbb492fe12460a66d0fe4cc857","0x25681ab599b4e2ceea31f8b498052c53fc2d74db","0x29fe6c66097f7972d8e47c4f691576327fcf9a12","0xfdd2ba77db02caa6a9869735dac577d809cadd11","0x9bf4001d307dfd62b26a2f1307ee0c0307632d59","0xdee6238780f98c0ca2c2c28453149bea49a3abc9","0x6d9348910e6ed90c1bb170c47965f5f7b8e19763","0xa4e471dbfe8c95d4c44f520b19cee436c01c3267","0xd2c0b70b9b451f7e2688d72460215d84caa6cbe4","0xf6436829cf96ea0f8bc49d300c536fcc4f84c4ed","0xcc71dd74183ea325f537665678263565c0b7e493","0xe4b5b2667e049ac8c79ae6c5a7e3300815aa32be","0x00f9451385bf75910d80374eb42edf36d1a3f243","0xef7fb88f709ac6148c07d070bc71d252e8e13b92","0x8b99f3660622e21f2910ecca7fbe51d654a1517d","0xab83d182f3485cf1d6ccdd34c7cfef95b4c08da4","0x0f7b0c7d9ea425b451d0738c2ece43161eff64bc","0xc365c3315cf926351ccaf13fa7d19c8c4058c8e1","0x66f791456b82921cbc3f89a98c24ea21784973a1","0x2f47a1c2db4a3b78cda44eade915c3b19107ddcc","0xbdd75a97c29294ff805fb2fee65abd99492b32a8","0xf17aced3c7a8daa29ebb90db8d1b6efd8c364a18","0xb3f923eabaf178fc1bd8e13902fc5c61d3ddef5b","0x47ac0fb4f2d84898e4d9e7b4dab3c24507a6d503","0x9be89d2a4cd102d8fecc6bf9da793be995c22541","0x7884f51dc1410387371ce61747cb6264e1daee0b","0xff0a024b66739357c4ed231fb3dbc0c8c22749f5","0xe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```

This creates a named filter called `binance_addresses` that we’ll reference throughout the rest of the pipeline.

# Step 2: Write the Transformation Code

This code extracts ERC20 `Transfer` events and outputs the fields you care about (chain, addresses, token, amount, etc.).

```bash theme={null}
curl --location 'https://app.indexing.co/dw/transformations/binance_transfers' \
--header 'x-api-key: YOUR_API_KEY' \
--header 'content-type: application/json' \
--data '{"code":"function(block) { const txfers = templates.tokenTransfers(block); return txfers.map((txfer, i) => ({ chain: block._network, block_number: txfer.blockNumber, transaction_hash: txfer.transactionHash, log_index: txfer.index || i, timestamp: txfer.timestamp, from_address: txfer.from, to_address: txfer.to, token_address: txfer.token, amount: txfer.amount })); }"}'

```

Want to filter specific tokens or high-value transfers only? Just modify this JavaScript transformation to include logic based on `token_address` or `amount`.

# Step 3: Test Your Transformation

Use a known Ethereum block to test the transformation output before you deploy it.

```bash theme={null}
curl --location --globoff 'https://app.indexing.co/dw/transformations/test?network=ethereum&beat=22731766&filter=binance_addresses&filterKeys[0]=from_address&filterKeys[1]=to_address' \
--header 'x-api-key: YOUR_API_KEY' \
--form 'code="function(block) { const txfers = templates.tokenTransfers(block); return txfers.map((txfer, i) => ({ chain: block._network, block_number: txfer.blockNumber, transaction_hash: txfer.transactionHash, log_index: txfer.index || i, timestamp: txfer.timestamp, from_address: txfer.from, to_address: txfer.to, token_address: txfer.token, amount: txfer.amount })); }"'
```

Make sure your filter is catching transfers as expected before moving on.

# Step 4: Set Up the Destination Table

We’ll deliver data into a PostgreSQL table. Here’s a schema that matches the transformation output:

```sql theme={null}
CREATE TABLE binance_transfers (
  chain TEXT NOT NULL,
  block_number BIGINT NOT NULL,
  transaction_hash TEXT NOT NULL,
  log_index INTEGER NOT NULL,
  timestamp TIMESTAMPTZ NOT NULL,
  from_address TEXT,
  to_address TEXT,
  token_address TEXT,
  amount NUMERIC,
  created_at TIMESTAMPTZ DEFAULT now(),
  PRIMARY KEY (chain, transaction_hash, log_index)
);
```

Prefer a webhook or cloud storage target? Just change the delivery adapter in the next step.

# Step 5: Create the Pipeline

Now deploy the full pipeline into **The Neighborhood** and stream data from any EVM chain in real time.

```bash theme={null}
curl --location 'https://app.indexing.co/dw/pipelines' \
--header 'x-api-key: YOUR_API_KEY' \
--header 'content-type: application/json' \
--data-raw '{
  "name": "binance_transfers",
  "transformation": "binance_transfers",
  "filter": "binance_addresses",
  "filterKeys": ["from_address", "to_address"],
  "networks": ["ethereum, base"],
  "enabled": true,
  "delivery": {
    "adapter": "POSTGRES",
    "connectionUri": "YOUR_POSTGRES_URI",
    "table": "binance_transfers",
    "uniqueKeys": ["chain", "transaction_hash", "log_index"]
  }
}'
```

The `"networks"` field supports:

* `"EVM"` → all EVM-compatible chains
* Or any individual network from our [Network List](https://docs.indexing.co/networks/overview)

***

# Optional: Backfill Historical Data

Want to backfill historical transfers from a specific period?

```bash theme={null}
curl --location 'https://app.indexing.co/dw/pipelines/binance_transfers/backfill' \
--header 'Content-Type: application/json' \
--header 'X-API-KEY: YOUR_API_KEY' \
--data '{
  "network": "ethereum",
  "value": "0x3f5CE5FBFe3E9af3971dD833D26bA9b5C936f0bE",
  "beatStart": 23029865,
  "beatEnd": 23029872,
  "beats": [23029869]
}'

```

You can script this to run over large date ranges or trigger programmatically for new addresses.

***

## Delivery Options

Most developers need the data is streamed into their target database. You can also:

* Send transfers to a webhook
* Store data in S3 or cloud storage
* Filter by `token_address` and `amount` to trigger alerts

The transformation layer is fully programmable and real-time, enabling custom logic for analytics, compliance, trading, or monitoring.

***

# Recap

You’ve now deployed a live pipeline in **The Neighborhood** that:

* Tracks 117 Binance addresses
* Can work across **any EVM chain**
* Streams token transfers into a database or webhook
* Can be customized for filtering, backfills, and alerts

Ready to build your own?

Browse our [Network List](https://docs.indexing.co/networks/overview) to see which networks you would deploy this pipeline on. If the network is not listed, let us know! We can easily onboard new networks for you.

To run these pipelines you can [contact us](https://indexing.co/contact) to get your API key.