Alchemy · Schema

Asset Transfer

Represents a single asset transfer event on the blockchain.

Web3BlockchainRPCNFTIndexingAccount Abstraction

Properties

Name	Type	Description
blockNum	string	Block number of the transfer in hexadecimal.
hash	string	Transaction hash of the transfer.
from	string	Sender wallet address.
to	string	Recipient wallet address.
value	number	Transfer value in native units.
asset	string	Asset symbol (e.g., ETH, USDC, or NFT collection name).
category	string	Transfer category (external, internal, erc20, erc721, erc1155).
metadata	object	Additional metadata for an asset transfer.

View JSON Schema on GitHub

JSON Schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/alchemy/refs/heads/main/json-schema/alchemy-transfers-api-asset-transfer-schema.json",
  "title": "Asset Transfer",
  "description": "Represents a single asset transfer event on the blockchain.",
  "type": "object",
  "properties": {
    "blockNum": {
      "type": "string",
      "description": "Block number of the transfer in hexadecimal.",
      "example": "0xfda53c"
    },
    "hash": {
      "type": "string",
      "description": "Transaction hash of the transfer.",
      "example": "0xabc123def456abc123def456abc123def456"
    },
    "from": {
      "type": "string",
      "description": "Sender wallet address.",
      "example": "0x0000000000000000000000000000000000000000"
    },
    "to": {
      "type": "string",
      "description": "Recipient wallet address.",
      "example": "0xd8da6bf26964af9d7eed9e03e53415d37aa96045"
    },
    "value": {
      "type": "number",
      "description": "Transfer value in native units.",
      "example": 1.0
    },
    "asset": {
      "type": "string",
      "description": "Asset symbol (e.g., ETH, USDC, or NFT collection name).",
      "example": "ETH"
    },
    "category": {
      "type": "string",
      "description": "Transfer category (external, internal, erc20, erc721, erc1155).",
      "enum": [
        "external",
        "internal",
        "erc20",
        "erc721",
        "erc1155"
      ],
      "example": "external"
    },
    "metadata": {
      "type": "object",
      "title": "Transfer Metadata",
      "description": "Additional metadata for an asset transfer.",
      "properties": {
        "blockTimestamp": {
          "type": "string",
          "format": "date-time",
          "description": "ISO 8601 timestamp of the block.",
          "example": "2026-04-19T10:00:00Z"
        }
      }
    }
  }
}