nft_balance
Returns the balance of a given account address.
You can specify the contract address and account address, then you can obtain how many NFTs that the account owns in that collection. Balance means the amount of NFTs in a collection. This API could be used to see specific account's NFT possession.
Supported on Ethereum, BNB Chain, Optimism, and Arbitrum.

Parameters

Object - An object with the following fields (required):
  • contractAddress(hex string, required) - the contract address of the collection. BlockVision currently support both ERC721 and ERC1155.
  • accountAddress(hex string, required) - the account address you want to query.
  • tokenId(string, optional) - id of the NFT. optional for ERC721. required for ERC1155.
  • blockNumber(integer number, optional) - specify the blockNumber for snapshot query (default latest). BlockVision can not only support users to query the current position, but also support users to query the historical information at any time.

Returns

Object - An object with the following fields:
  • id(integer number) - json-rpc id.
  • jsonrpc(string) - json-rpc version.
  • result(object) - an object with the following fields:
  • Object schema:
    • value(string) - balance value.

Example

Request

curl https://api.blockvision.org/v1/<api key> \
-X POST \
-H "Content-Type: application/json" \
-d '{
"id": 1,
"jsonrpc": "2.0",
"method": "nft_balance",
"params": {
"contractAddress":"0xad9Fd7cB4fC7A0fBCE08d64068f60CbDE22Ed34C",
"accountAddress":"0xC4B0D0A7717905d342926958453e0654806850bB",
"blockNumber": 0
}
}'

Result

{
"jsonrpc": "2.0",
"id": 1,
"result": {
"contractAddress": "0xad9Fd7cB4fC7A0fBCE08d64068f60CbDE22Ed34C",
"accountAddress": "0xC4B0D0A7717905d342926958453e0654806850bB",
"blockNumber": 13687883,
"value": "0"
}
}
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Outline
Parameters
Returns
Example
Request
Result