The Transfers API allows you to easily fetch historical transactions for any address across Ethereum and supported L2s including Polygon, Arbitrum, and Optimism.
See the web documentation for the full details.
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Description
The Transfers API allows you to easily fetch historical transactions for any address across Ethereum and supported L2s including Polygon, Arbitrum, and Optimism.
See the web documentation for the full details.
Parameters
| Parameter | Type | Description |
|---|---|---|
params | object | An object containing fields for the asset transfer query |
params object parameters
params object parameters| Param | Type | Description |
|---|---|---|
fromBlock | string | The starting block to check for transfers. This value is inclusive and defaults to 0x0 if omitted. |
toBlock | string | Inclusive to block (hex string, int, or latest). Defaults to latest if omitted. |
order? | string | Whether to return results in ascending or descending order by block number. Defaults to ascending if omitted. |
fromAddress? | string | The from address to filter transfers by. This value defaults to a wildcard for all addresses if omitted. |
toAddress? | string | The to address to filter transfers by. This value defaults to a wildcard for all addresses if omitted. |
contractAddresses | array of strings | List of contract addresses to filter for - only applies to erc20, erc721, erc1155 transfers. Defaults to all addresses if omitted. |
excludeZeroValue | boolean | Whether to exclude transfers with zero value. Note that zero value is different from null value. Defaults to true if omitted. |
category | array` | An array of categories to get transfers for. Available categories include: [ EXTERNAL = external, INTERNAL = internal, ERC20 = erc20, ERC721 = erc721, ERC1155 = erc1155, SPECIALNFT = specialnft |
maxCount | number | The maximum number of results to return per page. Defaults to 1000 if omitted. |
pageKey? | string | Optional page key from an existing one to use for pagination. |
withMetadata | boolean | Whether to include additional metadata about each transfer event. Defaults to false if omitted. |
Response
| Property | Type | Description |
|---|---|---|
Promise<AssetTransfersResponse / AssetTransfersWithMetadataResponse> | object | This returns the object response depending on whether withMetadata was set to trueor not. |
AssetTransfersResponse response object parameters
AssetTransfersResponse response object parameters| paramter | type | description |
|---|---|---|
uniqueId | string | The unique ID of the transfer. |
category | string | The category of the transfer. |
blockNum | string | The block number where the transfer occurred. |
from | string | The from address of the transfer. |
to | string | null | The to address of the transfer. |
value | number | null | Converted asset transfer value as a number (raw value divided by contract decimal).null if ERC721 transfer or contract decimal not available. |
erc721TokenId | string | null | The raw ERC721 token id of the transfer as a hex string. null if not an ERC721 transfer. |
erc1155Metadata | ERC1155Metadata[] | null | A list of ERC1155 metadata objects if the asset transferred is an ERC1155 token. null if not an ERC1155 transfer. |
tokenId | string | null | The token id of the token transferred. |
asset | string | null | Returns the token's symbol or ETH for other transfers. null if the information was not available. |
hash | string | The transaction hash of the transfer transaction. |
rawContract | RawContract | Information about the raw contract of the asset transferred. |
AssetTransfersWithMetadataResponse object parameters
AssetTransfersWithMetadataResponse object parameters| paramter | type | description |
|---|---|---|
uniqueId | string | The unique ID of the transfer. |
category | string | The category of the transfer. |
blockNum | string | The block number where the transfer occurred. |
from | string | The from address of the transfer. |
to | string | null | The to address of the transfer. |
value | number | null | Converted asset transfer value as a number (raw value divided by contract decimal).null if ERC721 transfer or contract decimal not available. |
erc721TokenId | string | null | The raw ERC721 token id of the transfer as a hex string. null if not an ERC721 transfer. |
erc1155Metadata | ERC1155Metadata[] | null | A list of ERC1155 metadata objects if the asset transferred is an ERC1155 token. null if not an ERC1155 transfer. |
tokenId | string | null | The token id of the token transferred. |
asset | string | null | Returns the token's symbol or ETH for other transfers. null if the information was not available. |
hash | string | The transaction hash of the transfer transaction. |
rawContract | RawContract | Information about the raw contract of the asset transferred. |
metadata | AssetTransfersMetadata | Additional metadata about the transfer event. The additional metadata object includes: 1. blockTimestamp: string/ Timestamp of the block from which the transaction event originated. / |
Example Request and Response
Prerequisite: You will need to install the Alchemy SDK before making requests with it.
The commands for installing it using npm or yarn are given below:
npm install alchemy-sdk
yarn add alchemy-sdk
Request
Here is an example of how to make a getAssetTransfers request using the Alchemy SDK:
// Imports the Alchemy SDK
const { Alchemy, Network } = require("alchemy-sdk");
// Configures the Alchemy SDK
const config = {
apiKey: "alchemy-replit", // Replace with your API key
network: Network.ETH_MAINNET, // Replace with your network
};
// Creates an Alchemy object instance with the config to use for making requests
const alchemy = new Alchemy(config);
const main = async () => {
//Assign the contract address to a variable
let toAddress = "0x1E6E8695FAb3Eb382534915eA8d7Cc1D1994B152";
//The response fetches the transactions the specified addresses.
let response = await alchemy.core.getAssetTransfers({
fromBlock: "0x0",
fromAddress: "0x0000000000000000000000000000000000000000",
toAddress: toAddress,
excludeZeroValue: true,
category: ["erc721", "erc1155"],
})
//Logging the response to the console
console.log(response)
};
main();
Response
{
transfers: [
{
blockNum: '0xd2113f',
uniqueId: '0xb8ad1138a22a0dcc5eddca1db9aa0c731891fe60041ed6f4d9ceb737c9f1b06d:log:165',
hash: '0xb8ad1138a22a0dcc5eddca1db9aa0c731891fe60041ed6f4d9ceb737c9f1b06d',
from: '0x0000000000000000000000000000000000000000',
to: '0x1e6e8695fab3eb382534915ea8d7cc1d1994b152',
value: null,
erc721TokenId: '0x0000000000000000000000000000000000000000000000000000000000001acb',
erc1155Metadata: null,
tokenId: '0x0000000000000000000000000000000000000000000000000000000000001acb',
asset: 'DUSK',
category: 'erc721',
rawContract: [Object]
},
{
blockNum: '0xd2113f',
uniqueId: '0xb8ad1138a22a0dcc5eddca1db9aa0c731891fe60041ed6f4d9ceb737c9f1b06d:log:166',
hash: '0xb8ad1138a22a0dcc5eddca1db9aa0c731891fe60041ed6f4d9ceb737c9f1b06d',
from: '0x0000000000000000000000000000000000000000',
to: '0x1e6e8695fab3eb382534915ea8d7cc1d1994b152',
value: null,
erc721TokenId: '0x0000000000000000000000000000000000000000000000000000000000001acc',
erc1155Metadata: null,
tokenId: '0x0000000000000000000000000000000000000000000000000000000000001acc',
asset: 'DUSK',
category: 'erc721',
rawContract: [Object]
},
{
blockNum: '0xe4284a',
uniqueId: '0x04573492a1ecb47102a2a70af190fa47f605a71f54ea62d94a1da1e225b7e157:log:345',
hash: '0x04573492a1ecb47102a2a70af190fa47f605a71f54ea62d94a1da1e225b7e157',
from: '0x0000000000000000000000000000000000000000',
to: '0x1e6e8695fab3eb382534915ea8d7cc1d1994b152',
value: null,
erc721TokenId: '0x0000000000000000000000000000000000000000000000000000000000000bc0',
erc1155Metadata: null,
tokenId: '0x0000000000000000000000000000000000000000000000000000000000000bc0',
asset: 'NC',
category: 'erc721',
rawContract: [Object]
},
{
blockNum: '0xe4284a',
uniqueId: '0x04573492a1ecb47102a2a70af190fa47f605a71f54ea62d94a1da1e225b7e157:log:346',
hash: '0x04573492a1ecb47102a2a70af190fa47f605a71f54ea62d94a1da1e225b7e157',
from: '0x0000000000000000000000000000000000000000',
to: '0x1e6e8695fab3eb382534915ea8d7cc1d1994b152',
value: null,
erc721TokenId: '0x0000000000000000000000000000000000000000000000000000000000000bc1',
erc1155Metadata: null,
tokenId: '0x0000000000000000000000000000000000000000000000000000000000000bc1',
asset: 'NC',
category: 'erc721',
rawContract: [Object]
}
]
}
Code Sandbox
You can test out the getAssetTransfers method using the code sandbox below:
Use Cases
Here are some common use cases for the getAssetTransfers method:
-
Asset tracking: One of the most common use cases for
getAssetTransfersis to track the movement of a particular asset on the blockchain. This can be useful for businesses and organizations that need to keep track of their assets as they move on-chain. -
Audit trails: By using
getAssetTransfersto retrieve a history of all transfers of a particular asset, auditors can verify the authenticity and provenance of the asset. This can help to prevent fraud and ensure compliance with regulations. -
Payment verification:
getAssetTransferscan also be used to verify that a payment has been made or received. For example, if a company is expecting a payment in a particular asset, they can use this function to confirm that the payment has been transferred to their account.
Related Methods
Here are the methods related to getAssetTransfers:
- call: Returns the result of executing the transaction, using call.