BNB Smart Chain

Binance Smart Chain is an Ethereum EVM 100% compatible blockchain, and is very good for decentralized application (Dapp) development within many possible verticals including DeFi, NFT, Gaming, and many others.
Tatum supports 2 chains:

Generate BSC wallet

1 credit per API call

Tatum supports BIP44 HD wallets. It is very convenient and secure, since it can generate 2^31 addresses from 1 mnemonic phrase. Mnemonic phrase consists of 24 special words in defined order and can restore access to all generated addresses and private keys.
Each address is identified by 3 main values:

  • Private Key - your secret value, which should never be revealed
  • Public Key - public address to be published
  • Derivation index - index of generated address

Tatum follows BIP44 specification and generates for BSC wallet with derivation path m'/44'/60'/0'/0. More about BIP44 HD wallets can be found here - https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki. Generate BIP44 compatible BSC wallet.

SecurityX-API-Key
Request
query Parameters
mnemonic
string <= 500 characters

Mnemonic to use for generation of extended public and private keys.

Responses
200

OK

400

Bad Request. Validation failed for the given object in the HTTP Body or Request parameters.

401

Unauthorized. Not valid or inactive subscription key present in the HTTP Header.

500

Internal server error. There was an error on the server during the processing of the request.

get/v3/bsc/wallet
Request samples
Response samples
application/json
{
  • "mnemonic": "urge pulp usage sister evidence arrest palm math please chief egg abuse",
  • "xpub": "xpub6EsCk1uU6cJzqvP9CdsTiJwT2rF748YkPnhv5Qo8q44DG7nn2vbyt48YRsNSUYS44jFCW9gwvD9kLQu9AuqXpTpM1c5hgg9PsuBLdeNncid"
}

Generate BSC account address from Extended public key

1 credit per API call

Generate BSC account deposit address from Extended public key. Deposit address is generated for the specific index - each extended public key can generate up to 2^31 addresses starting from index 0 until 2^31.

SecurityX-API-Key
Request
path Parameters
xpub
required
string

Extended public key of wallet.

Example: xpub6EsCk1uU6cJzqvP9CdsTiJwT2rF748YkPnhv5Qo8q44DG7nn2vbyt48YRsNSUYS44jFCW9gwvD9kLQu9AuqXpTpM1c5hgg9PsuBLdeNncid
index
required
number

Derivation index of desired address to be generated.

Example: 1
Responses
200

OK

400

Bad Request. Validation failed for the given object in the HTTP Body or Request parameters.

401

Unauthorized. Not valid or inactive subscription key present in the HTTP Header.

500

Internal server error. There was an error on the server during the processing of the request.

get/v3/bsc/address/{xpub}/{index}
Request samples
Response samples
application/json
{
  • "address": "0xa7673161CbfE0116A4De9E341f8465940c2211d4"
}

Generate BSC private key

1 credit per API call

Generate private key of address from mnemonic for given derivation path index. Private key is generated for the specific index - each mnemonic can generate up to 2^31 private keys starting from index 0 until 2^31.

SecurityX-API-Key
Request
Request Body schema: application/json
required
index
required
integer <= 2147483647

Derivation index of private key to generate.

mnemonic
required
string [ 1 .. 500 ] characters

Mnemonic to generate private key from.

Responses
200

OK

400

Bad Request. Validation failed for the given object in the HTTP Body or Request parameters.

401

Unauthorized. Not valid or inactive subscription key present in the HTTP Header.

500

Internal server error. There was an error on the server during the processing of the request.

post/v3/bsc/wallet/priv
Request samples
application/json
{
  • "index": 0,
  • "mnemonic": "urge pulp usage sister evidence arrest palm math please chief egg abuse"
}
Response samples
application/json
{
  • "key": "cTmS2jBWXgFaXZ2xG9jhn67TiyTshnMp3UedamzEhGm6BZV1vLgQ"
}

Web3 HTTP driverDeprecated

2 credits per API call

This endpoint is deprecated. Use the HTTP-based JSON RPC driver instead.


Use this endpoint URL as a http-based web3 driver to connect directly to the BSC node provided by Tatum. To learn more about BSC Web3, visit the BSC developer's guide.

SecurityX-API-Key
Request
path Parameters
xApiKey
required
string

Tatum X-API-Key used for authorization.

Example: asdlkfjnqunalkwjfnq2oi303294857k
Request Body schema: application/json
required
object

Any valid Web3 method content body.

Responses
200

OK

400

Bad Request. Validation failed for the given object in the HTTP Body or Request parameters.

401

Unauthorized. Not valid or inactive subscription key present in the HTTP Header.

500

Internal server error. There was an error on the server during the processing of the request.

post/v3/bsc/web3/{xApiKey}
Request samples
application/json
{
  • "jsonrpc": "2.0",
  • "method": "web3_clientVersion",
  • "params": [ ],
  • "id": 2
}
Response samples
application/json
{
  • "jsonrpc": "2.0",
  • "id": 2,
  • "result": "Geth/v1.9.9-omnibus-e320ae4c-20191206/linux-amd64/go1.13.4"
}

Get current block number

1 credit per API call

Get BSC current block number. This is the number of the latest block in the blockchain.

SecurityX-API-Key
Responses
200

OK

401

Unauthorized. Not valid or inactive subscription key present in the HTTP Header.

500

Internal server error. There was an error on the server during the processing of the request.

get/v3/bsc/block/current
Request samples
Response samples
application/json
6491272

Get BSC block by hash

1 credit per API call

Get BSC block by block hash or block number.

SecurityX-API-Key
Request
path Parameters
hash
required
string

Block hash or block number

Example: 6470657
Responses
200

OK

400

Bad Request. Validation failed for the given object in the HTTP Body or Request parameters.

401

Unauthorized. Not valid or inactive subscription key present in the HTTP Header.

500

Internal server error. There was an error on the server during the processing of the request.

get/v3/bsc/block/{hash}
Request samples
Response samples
application/json
{
  • "difficulty": "3296820833",
  • "extraData": "0x",
  • "gasLimit": 8000000,
  • "gasUsed": 7985124,
  • "hash": "0x5d40698ee1b1ec589035f2a39c6162287e9056868cc79d66cfb248ba9f66c3fc",
  • "logsBloom": "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",
  • "miner": "0xD8869d9E3d497323561Fbca2319a9FC3F6f10c4B",
  • "mixHash": "0x7a44a1f56f12ae825fdc04550d7c3af2344daab987691771c06235f25fafcaa6",
  • "nonce": "0xfa1692f52a7ac672",
  • "number": 6470657,
  • "parentHash": "0xd34aab8a455027086ac54034e68608c84d984401a883b7b5d91f9ae0bbefda15",
  • "receiptsRoot": "0x4a496b6b7f2a1c5850bf9eebbea7193807be0067b1c06f17b9dde4eef7b2f960",
  • "sha3Uncles": "0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347",
  • "size": 15296,
  • "stateRoot": "0x32757c92f10c6c5a106c6fb4b9ca3ff301e413a59ca3d0513b4bf98c72efddba",
  • "timestamp": 1569600592,
  • "totalDifficulty": "23329673338013873",
  • "transactions": [
    ],
  • "transactionsRoot": "0x5990081ef8515d561b50255af03c5d505f7725ddef27405dc67d23bfd0f47704"
}

Get BSC Account balance

1 credit per API call

Get BSC account balance in BNB. This method does not prints any balance of the BEP20 or BEP721 tokens on the account.

SecurityX-API-Key
Request
path Parameters
address
required
string

Account address you want to get balance of

Example: 0x3223AEB8404C7525FcAA6C512f91e287AE9FfE7B
Responses
200

OK

400

Bad Request. Validation failed for the given object in the HTTP Body or Request parameters.

401

Unauthorized. Not valid or inactive subscription key present in the HTTP Header.

500

Internal server error. There was an error on the server during the processing of the request.

get/v3/bsc/account/balance/{address}
Request samples
Response samples
application/json
{
  • "balance": "10.52"
}

Get BSC Transaction

2 credits per API call

Get BSC transaction by transaction hash.

SecurityX-API-Key
Request
path Parameters
hash
required
string

Transaction hash

Example: 0xe6e7340394958674cdf8606936d292f565e4ecc476aaa8b258ec8a141f7c75d7
Responses
200

OK

400

Bad Request. Validation failed for the given object in the HTTP Body or Request parameters.

401

Unauthorized. Not valid or inactive subscription key present in the HTTP Header.

403

Forbidden. The request is authenticated, but it is not possible to required perform operation due to logical error or invalid permissions.

500

Internal server error. There was an error on the server during the processing of the request.

get/v3/bsc/transaction/{hash}
Request samples
Response samples
application/json
{
  • "blockHash": "0xcf2c40f475e78c7c19778e1ae999a0e371c9319b38182ea15dc94536f13f9137",
  • "status": true,
  • "blockNumber": 6470854,
  • "from": "0x81b7E08F65Bdf5648606c89998A9CC8164397647",
  • "gas": 21000,
  • "gasPrice": "1000000000",
  • "transactionHash": "0xe6e7340394958674cdf8606936d292f565e4ecc476aaa8b258ec8a141f7c75d7",
  • "input": "0x",
  • "nonce": 26836405,
  • "to": "0xbC546fa1716Ed886967cf73f40e8F2F5e623a92d",
  • "transactionIndex": 3,
  • "value": "1000000000000000000",
  • "gasUsed": 21000,
  • "cumulativeGasUsed": 314159,
  • "contractAddress": "0x81b7E08F65Bdf5648606c89998A9CC8164397647",
  • "logs": [
    ]
}

Get count of outgoing BSC transactions

1 credit per API call

Get a number of outgoing BSC transactions for the address. When a transaction is sent, there can be multiple outgoing transactions, which are not yet processed by the blockchain. To distinguish between them, there is a counter called a nonce, which represents the order of the transaction in the list of outgoing transactions.

SecurityX-API-Key
Request
path Parameters
address
required
string = 42 characters

address

Example: 0xdac17f958d2ee523a2206206994597c13d831ec7
Responses
200

OK

400

Bad Request. Validation failed for the given object in the HTTP Body or Request parameters.

401

Unauthorized. Not valid or inactive subscription key present in the HTTP Header.

500

Internal server error. There was an error on the server during the processing of the request.

get/v3/bsc/transaction/count/{address}
Request samples
Response samples
application/json
5

Send BSC / BEP20 from account to account

2 credits per API call

Send BNB or Tatum supported BEP20 token from account to account.

Signing a transaction

When sending BNB, you are charged a fee for the transaction, and you must sign the transaction with the private key of the blockchain address from which the fee will be deducted.

Providing the private key in the API is not a secure way of signing transactions, because the private key can be stolen or exposed. Your private keys should never leave your security perimeter. You should use the private keys only for testing a solution you are building on the testnet of a blockchain.

For signing transactions on the mainnet, we strongly recommend that you use the Tatum Key Management System (KMS) and provide the signature ID instead of the private key in the API. Alternatively, you can use the Tatum JavaScript client.

SecurityX-API-Key
Request
Request Body schema: application/json
required
One of:
data
string <= 50000 characters

(Only for BSC transactions) Additional data that can be passed to a blockchain transaction as a data property; must be in the hexadecimal format

nonce
number >= 0

Nonce to be set to BSC transaction. If not present, last known nonce will be used.

to
required
string = 42 characters

Blockchain address to send assets

currency
required
string

Currency to transfer from BSC Blockchain Account. BEP20 tokens like BETH, BBTC, BADA, WBNB, BDOT, BXRP, BLTC, BBCH, CAKE are available only for mainnet use.

Enum: "BSC" "BETH" "BBTC" "RMD" "USDC_BSC" "B2U_BSC" "BADA" "WBNB" "GMC_BSC" "BDOT" "BXRP" "BLTC" "BBCH" "HAG" "CAKE" "BUSD_BSC"
object (CustomFee)

The custom defined fee; if not present, will be calculated automatically

gasPrice
required
string^[+]?\d+$

The price for one gas unit (in Gwei)

gasLimit
required
string^[+]?\d+$

The maximum number of gas units that you are willing to spend on processing the transaction at the provided gas price

amount
required
string^[+]?((\d+(\.\d*)?)|(\.\d+))$

Amount to be sent.

fromPrivateKey
required
string = 66 characters

Private key of sender address. Private key, or signature Id must be present.

Responses
200

OK

400

Bad Request. Validation failed for the given object in the HTTP Body or Request parameters.

401

Unauthorized. Not valid or inactive subscription key present in the HTTP Header.

403

Forbidden. The request is authenticated, but it is not possible to required perform operation due to logical error or invalid permissions.

500

Internal server error. There was an error on the server during the processing of the request.

post/v3/bsc/transaction
Request samples
application/json
{
  • "to": "0x687422eEA2cB73B5d3e242bA5456b782919AFc85",
  • "currency": "BSC",
  • "amount": "100000",
  • "fromPrivateKey": "0x05e150c73f1920ec14caa1e0b6aa09940899678051a78542840c2668ce5080c2"
}
Response samples
application/json
{
  • "txId": "c83f8818db43d9ba4accfe454aa44fc33123d47a4f89d47b314d6748eb0e9bc9"
}

Invoke a method in a smart contract on BNB Smart Chain

2 credits per API call

Invoke a method in an existing smart contract on BNB Smart Chain.

You can call a read-only or write method.

  • For read-only methods, the output of the invoked method is returned.
  • For write methods, the ID of the associated transaction is returned.

Troubleshooting a failed transaction
Tatum ensures that this API works against the blockchain (accesses the blockchain, finds the specified smart contract, and executes the specified ABI method with the provided parameters).
However, because this API can be run against any smart contract on the blockchain, Tatum cannot in any way guarantee that the method itself will be executed successfully.

If you have issues with invoking the method, refer to the user documentation for this method, or contact the author of the smart contract.

For more information about invoking methods in smart contracts, see this article on our Support Portal.

Signing a transaction
When invoking a method in a smart contract, you are charged a fee for the transaction, and you must sign the transaction with the private key of the blockchain address from which the fee will be deducted.

If caller field is present instead of the private key, Tatum will sign the transaction with the managed private key connected to the caller address. This is applicable only for paid mainnet plans and all testnet plans. Keep in mind that the caller address must have enough access right to perform the action in the smart contract method.

Providing the private key in the API is not a secure way of signing transactions, because the private key can be stolen or exposed. Your private keys should never leave your security perimeter. You should use the private keys only for testing a solution you are building on the testnet of a blockchain.

For signing transactions on the mainnet, we strongly recommend that you use the Tatum Key Management System (KMS) and provide the signature ID instead of the private key in the API. Alternatively, you can use the Tatum JavaScript client.

SecurityX-API-Key
Request
Request Body schema: application/json
required
One of:
contractAddress
required
string = 42 characters

The address of the smart contract

methodName
required
string [ 1 .. 500 ] characters

Name of the method to invoke on smart contract.

methodABI
required
object

ABI of the method to invoke.

params
required
Array of strings
Responses
200

OK

400

Bad Request. Validation failed for the given object in the HTTP Body or Request parameters.

401

Unauthorized. Not valid or inactive subscription key present in the HTTP Header.

403

Forbidden. The request is authenticated, but it is not possible to required perform operation due to logical error or invalid permissions.

500

Internal server error. There was an error on the server during the processing of the request.

post/v3/bsc/smartcontract
Request samples
application/json
{
  • "contractAddress": "0x687422eEA2cB73B5d3e242bA5456b782919AFc85",
  • "methodName": "transfer",
  • "methodABI": {
    },
  • "params": [
    ]
}
Response samples
application/json
{
  • "txId": "c83f8818db43d9ba4accfe454aa44fc33123d47a4f89d47b314d6748eb0e9bc9"
}

Broadcast signed BSC transaction

2 credits per API call

Broadcast signed transaction to BSC blockchain. This method is used internally from Tatum KMS or Tatum client libraries. It is possible to create custom signing mechanism and use this method only for broadcasting data to the blockchain.

SecurityX-API-Key
Request
Request Body schema: application/json
required
txData
required
string [ 1 .. 500000 ] characters

Raw signed transaction to be published to network.

signatureId
string <uuid>

ID of prepared payment template to sign. Required only, when broadcasting transaction signed by Tatum KMS.

index
number [ 0 .. 2147483647 ]

(Only if the signature ID is mnemonic-based and you run KMS v6.2 or later) The index of the address to send the assets from that was generated from the mnemonic

Responses
200

OK

400

Bad Request. Validation failed for the given object in the HTTP Body or Request parameters.

401

Unauthorized. Not valid or inactive subscription key present in the HTTP Header.

403

Forbidden. The request is authenticated, but it is not possible to required perform operation due to logical error or invalid permissions.

500

Internal server error. There was an error on the server during the processing of the request.

post/v3/bsc/broadcast
Request samples
application/json
{
  • "txData": "62BD544D1B9031EFC330A3E855CC3A0D51CA5131455C1AB3BCAC6D243F65460D"
}
Response samples
application/json
{
  • "txId": "c83f8818db43d9ba4accfe454aa44fc33123d47a4f89d47b314d6748eb0e9bc9"
}