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Smart Contracts

Upload a smart contract

MultiBaas compiles the smart contract server-side and provides feedback as to what sub-contracts are present in the source code.

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To upload a smart contract:

  1. Select Contracts from the main menu
  2. Click New Contract from the side menu
  3. Click Select Files from the Upload Smart Contracts window
  4. Open the prepared solidity file from the file selection dialogue

MultiBaas compiles the smart contract server-side and provides feedback as to what sub-contracts are present in the source code.

MultiBaas suggests labels and versions for each of the sub-contracts in the file. The suggested label is based on the name of the contract and the version is based on the number of times a contract of that name has been uploaded.

  1. Select the sub-contracts to import into MultiBaas
  2. Review or update the label and version of each of the selected sub-contracts you wish to upload
  3. Click Submit to upload the selected contracts

Note that at this time the smart contract source code, bytecode, ABI and other metadata have been persisted to the MultiBaas database. The ABI is the primary source of information about the smart contract, and is generated by the Solidity compiler, solc.

After submitting a contract you will be prompted to a deploy it to the network or link it to an existing address.

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1
Introduction to MultiBaas

MultiBaas is a blockchain middleware that allows you to build decentralized applications quickly and easily.

2
Getting started: creating a MultiBaas deployment

To use MultiBaas you will need to create a new deployment. To do that you will first create an account on our management portal

3
Create an account

Go to the Sign Up page to create a new account. You will need to enter

4
Deploy a MultiBaas instance

After creating a new account you will be directed to the New Deployment page. You can also reach this page by the following actions:

5
Multilingual support

The MultiBaas UI is designed in English but has limited support for the following languages...

6
The MultiBaas API

MultiBaas takes smart contract source code and dynamically constructs a REST API that users can use to interact with smart contracts ...

7
Generate API keys

API keys belong to individual user accounts and inherit the same permissions as the associated account. If you want to your API key to ...

8
Using curl

Curl is a free, open source command line utility that can be used to interact with URLs including those defined in the MultiBaas API.

9
Getting started: smart contracts

MultiBaas currently supports Ethereum smart contracts written in the Solidity programming language, although support for additional ...

10
Prepare a smart contract for upload

Due to the compilation process, it is currently required to combine your contracts into a single file before uploading.

11
Upload a smart contract

MultiBaas compiles the smart contract server-side and provides feedback as to what sub-contracts are present in the source code.

12
Deploy a smart contract

After uploading a solidity file containing one or more smart contracts, you will be prompted to deploy or link the compiled contracts to a..

13
Link a deployed smart contract instance

Besides deploying a smart contract to a new address, you can also link a smart contract to an existing instance.

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Contracts, versions, and instances

Contracts, contract meta-data, deployed instances, and blockchain addresses have a number of user-defined attributes in order to help you...

15
Interact with a smart contract

Once you have uploaded and deployed or linked a smart contract you can then interact with it through either the UI or the API.

16
Type conversions

MultiBaas provides users with the ability to, on a per-method per-input/output parameter basis, adjust how the value is interpreted on its..

17
Multi-signature (multisig) wallet smart contracts

Multisignature (multisig) wallets are smart contracts that allow multiple signers to review and agree on an action on the blockchain ...

18
Sample smart contracts

MultiBaas comes with a number of sample smart contracts pre-installed. They may be linked to deployed contracts on the blockchain or just...

19
Overview of the blockchain

A blockchain is a distributed database that uses a decentralized consensus algorithm to agree on the current state of the world.

20
Connect to geth

Coming soon...

21
ABIs: enhanced ABI and raw ABI

MultiBaas generates its own stable ABI that provides a stable platform to build DApps on. The MultiBaas ABI, along with the rest of the...

22
Addresses

thereum addresses are represented by 40 hexadecimal digits prefixed with "0x". An address can refer to an account controlled by an ...

23
OMG Network

Plasma is a "layer 2" blockchain scaling solution designed by Joseph Poon and Vitalik Buterin.

24
Role based access control

MultiBaas uses a rudimentary three part role based access control (RBAC) model for controlling access to MultiBaas resources.

25
RBAC model: users, groups, and roles

There are four pre-defined Groups in MultiBaas...

26
Assign roles to groups

As explained in the previous section 13.1 RBAC model: users, groups, and roles, there are four pre-defined Groups and five pre-defined...

27
Assign groups to users

You can assign one or more groups to a user when creating or editing a user. A common scenario where you might do this is when giving ...

28
Users

Users of MultiBaas are identified by their email address and can perform various actions within the system. Primarily user accounts are...

29
Create, edit, and delete users

Users can be created interactively using the UI or by uploading a CSV file...

30
MultiBaas users vs. console.curvegrid.com users

console.curvegrid.com is the deployment management and billing portal from where you will launch instances of the MultiBaas software ...

31
Reset passwords

If you forget your password for either console.curvegrid.com or for your MultiBaas deployment you can request a password reset link.

32
Two factor authentication

Curvegrid supports two factor authentication using time based one time passwords.

33
Events and Event Queries

The Ethereum blockchain has a concept called events, also referred to as transaction logs, which are used to indicate that a specific ...

34
Event summaries per contract instance

In MultiBaas event monitoring persistence is enabled on a per-smart contract per-address basis when a smart contract is linked ...

35
Events page

he Events page shows a preview of the events of all contracts being monitored by MultiBaas. To navigate to the Events page

36
Event queries

One of the challenges of interacting with smart contracts is computing the current state of a contract.

37
MultiBaas Spreadsheet

MultiBaas Spreadsheet is an add-on for Google Sheets. It provides an easy way to interact with the blockchain via custom ...

38
Install add-on

Installing the Google Sheets add-on.

39
Set API key in add-on

To set the API key in the add-on, navigate to your MultiBaas deployment in a web browser. Login, and go to Admin > API Keys or Account ...

40
Set deployment ID in add-on

To set the deployment ID, navigate to your MultiBaas deployment. Copy the URL from your browser's URL bar.

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Spreadsheet Functions

Retrieve the details of a blockchain address.