Blockchain transaction functions

Helps to send the blockchain tractions.

MBCOMPOSE(address, contract, method, from, signer, value, ...args)

Compose an unsigned transaction to call a smart contract function.

Parameters

• address Ethereum address or label.
• contract Smart contract label, must be associated with the address.
• method Smart contract function name.
• from From address.
• signer (Optional) Signer address. Defaults to the 'from' address.
• value (Optional) Value for amount of ETH sent.
• args (Optional) Arguments to pass to the function.

Return

An unsigned transaction, suitable for signing and submitting to the blockchain.

Example

=MBCOMPOSE("multibaasfaucet", "multibaasfaucet", "deposit", "0xA616eEd6aD7A0cF5d2388301a710c273ca955e05", "0xA616eEd6aD7A0cF5d2388301a710c273ca955e05", 100000000000000000) in the cell. The structure of the return value is as follows:

{"from":"0xA616eEd6aD7A0cF5d2388301a710c273ca955e05","to":"0x317570b8c43feCaDb8Ebaf765044Ad9626F4848e","value":"100000000000000000","gas":22774,"gasPrice":"20000000000","data":"0xd0e30db0","nonce":6,"hash":"0x72f0a63bc24503d1b71e93729c7787891633aa192dadb999f87b0f343a8ecbf4"}

MBPOSTTEMPLATE(numberOfArgs)

Create a template to be used with calling a smart contract method (function) that will write to the blockchain.

Parameters

• numberOfArgs (Optional) Number of arguments (parameters) to pass to the method (function). Default is 0.

Return

A two dimensional array that can be used as the starting point for calling a smart contract method.

Example

=MBPOSTTEMPLATE(1) in the cell. The structure of the return value is as follows:

MBTX(hash, headers)

Retrieve the details of a blockchain transaction.

Parameters

• hash Transaction hash.
• headers (Optional) Include column headers. TRUE/FALSE, defaults to TRUE.

Return

Transaction details.

Example

=MBTX("0xfe9e4b800d14c36f2e8c26ab44ffcfcbf55ac71d6f0d5f2ac95b3d63c7f71569") in the cell. The structure of the return value is as follows: