#smartcontractdeveloper

Smart contracts are the solutions for enterprises looking for alternatives to traditional contracts. Smart contracts are agreements in computer programs that execute themselves automatically. Their ability to simplify business and trade between anonymous and identified parties without a middleman makes them popular. However, finding one of the right smart contract development companies takes time and effort. 

For your convenience, we've thoroughly researched and curated a comprehensive list of the top smart contract companies on certain criteria. Explore the entire list in this article. 

Our Selection Criteria for Smart Contract Development Companies

Before we outline all the top smart contract development companies, it is essential to understand how we came up with this list. We analyzed firms based on the following criteria: 

Technical Proficiency

Smart contract development requires knowledge and skills in blockchain technology and programming languages like Solidity. Our selection process involved a thorough analysis of smart contract development companies, assessing their proficiency through portfolio evaluation, experience across blockchain platforms, and comprehensive security knowledge. 

Research and Development (R&D)

R&D enables businesses to identify the most appropriate for project execution. It enhances the cost-effectiveness, performance, and security of the overall project. Our selected smart contract development companies invest significant time and resources in understanding emerging technologies and trends in the smart contract space. 

Post-launch Support

Timely upgrades and troubleshooting ensure that smart contracts remain efficient, secure, and compliant with emerging industry standards and trends. Therefore, we selected companies that offer post-launch support, maintenance, and updates to their clients. This ongoing partnership reflects a company's ethos of reliability, responsiveness, and adaptability.

Suggested Read | Best Practices for Smart Contract Development

Top 5 Smart Contract Development Companies

We have curated the following list of top 5 smart contract development companies:

Oodles Blockchain

Headquarters: Wyoming, USA

Oodles Blockchain showcases its unparalleled expertise in smart contract development through the successful completion of various smart contract projects. Their proven track record is a testament to their proficiency in delivering robust, secure, and innovative smart contract solutions tailored to diverse industry needs.

Oodles Blockchain offers custom smart contract development, deployment, and post-launch support at reasonable prices. Their dedicated R&D (research and development) department performs extensive research to create customized solutions that precisely match varied business needs. 

Appinventiv

Headquarters: Manhattan, NY

With a track record of innovation, Appinventiv stands out for its robust smart contract development. From token wallets to payment platforms, it offers custom smart contract solutions for diverse cases. The company has a client-focused approach that enables it to build scalable smart contracts that drive digital transformation.

Appinventiv brings a multitude of advantages to the table in its smart contract development services, including certified expertise and compliance-assured products.

Antier

Headquarters: California, USA

A leader in blockchain technology, Antier excels in crafting smart contracts that optimize operations. Its smart contract solutions ensure transparency and trust across decentralized systems. The firm creates a coherent roadmap to ensure smooth and accelerated development and deployment.

Furthermore, Antier Solutions offers complete support, including post-delivery services, after smart contract development. 

Kellton 

Headquarters: New Jersey, USA

Kellton offers end-to-end customized software solutions for smart contracts. The smart contract development company focuses on delivering quality solutions. Its smart contract-related services include design, development, audit, consulting, and optimization.

The firm offers an agile deployment approach to develop superior smart contract-based solutions. Kellton's experts navigate complex processes to deliver on time and within budget. 

Blaize

Headquarters: Kyiv, Ukraine 

Blaize offers smart contract development services for diverse use cases, including DeFi (decentralized finance), trading bots, DEXs (decentralized exchanges), and more. Transparency, expertise, and creativity are the core values of Blaize. They enable the smart contract development firm to develop solutions that boost the efficiency, security, and service of their clients. 

Check It Out | A Definitive Guide to Smart Contract Development Tools

Conclusion

To sum up, these top five smart contract creation firms are distinguished by their extraordinary knowledge, inventiveness, and dedication to quality. Each company brings unique strengths to the table whether it's their technical prowess, track record of successful projects, or dedication to post-launch support.

Based on the specifications of your project, you can assess these industry leaders and take into account their extensive offerings. It will enable you to select the ideal partner for your smart contract solution with assurance.

Bitcoin initiated the boom of blockchain technology. It was a quick and simple way to transact in a decentralized manner since there is no involvement from banks. Additionally, there is a record of every transaction in the unalterable public ledger, so people have confidence in it. But there are limitations to Bitcoin. Blockchain technology might be utilised for much more than simply peer-to-peer financial transactions with the correct programming. So, Ethereum came into existence to overcome this challenge. This platform is supported by a comparatively new programming language called Solidity. Solidity is of great importance in the emerging Web 3.0 world, providing the foundation for smart contract development and dApps. Today, numerous smart contract development companies utilize Solidity to create innovative solutions for a wide range of applications, including financial services, supply chain management, and more. Solidity’s prominence continues to grow, and its implications span across dApps and the thriving ecosystem of smart contract development.

Solidity for Smart Contract Development

A smart contract is a computer program that runs on a blockchain platform to execute a task after fulfilling a pre-requisite condition. They work on the “if/when…then…” assertion, which is expressed in the coding. So, once a smart contract gets information from the ledger about a transaction, it performs the associated task automatically. But, even though they eliminate the involvement of any third party, they are dependent on the underlying codes. Solidity smart contracts are a particularly safe way to transfer anything of value because they are created on a blockchain and no entity can change or destroy them. It could, however, also be a drawback. Solidity smart contracts require flawless and error-free programming. You cannot go back and undo transactions. Fixing bugs just requires updating the Ethereum code, which is a difficult undertaking.

Solidity makes designing, developing, and executing smart contracts on the blockchain platform quite easy for developers.

Also, Read | Pre-Built NFT and Smart Contract Solutions for Quick Launch

Benefits of Solidity Programming Language

Relatively Easy to Learn

Provide application binary interface (ABI)

Supports Various Data types

Read the detailed blog here — Why Use Solidity for Smart Contracts Development

Data Types Supported by Solidity

Solidity Development Tools

There are a few tools that simplify a developer’s journey related to solidity development.

Doxity

This tool assists clients in producing documents for a network. Additionally, it helps in streamlining their workforce.

Solidity REPL

Developers can use Solidity REPL for writing command line codes on the console. It is a general-purpose computing tool.

EVM Disassembler (Evmdis)

It is a tool to execute static analysis on the bytecode. It converts Ethereum contract bytecodes into a much simpler solidity-like code, increasing the understanding of the contracts.

Solgraph

Solgraph is a tool that creates DOT graphs, which show the function control flow of the solidity contracts and point out possible security flaws.

Also, Read | Resourceful Blockchain Programming Languages | Updated List

Solidity’s Application in Blockchain Development

Voting

In the real world, there are several ways that fraud can be committed during the voting process, including data manipulation, booth capturing, false voters, voting machine manipulation, etc. Voting contracts are one way we could handle some of these problems. The voting process can be made simple, transparent, and automatic with well-planned code that is correctly implemented.

Crowdsourcing

If done through contracts, crowdfunding can address several challenges such as third-party commissions, data management issues, etc. Instead than relying on unstable government systems, smart contracts might be a far better choice for crowdfunding. These smart contracts can be created in Solidity.

Blind Auctions

On Ethereum, blind auction implementation using Solidity is very straightforward. It is possible to hold an open auction in which each participant is informed of the other’s bid. After then, a blind auction can be created in which no one can view other bidders’ offers until the auction is over.

Also, Read | An Introductory Guide to Ethereum 2.0 | A Major Upgrade

Conclusion

This article gives you a comprehensive guide on smart contract development and deployment on the NEAR platform.

NEAR Protocol is a decentralised blockchain app development platform that has been dubbed the “Ethereum killer.” It attempts to make the process of creating dApps simpler and more user-friendly for developers. Users can use its native token, NEAR, to pay for storage and transaction costs on the NEAR platform.

NEAR Protocol is the best example of a third-generation digital ledger. It focuses on solving scalability issues. It rewards the network to develop and deploy dApps in the ecosystem in order to promote decentralised financial.

The two distinct parts of the NEAR Protocol

- Native token named NEAR

- Smart Contracts

They manage the on-chain storage. Modification of data.

Interactions with Smart Contract-(s):-

Both the contracts we deploy and the contracts others install have communication capabilities.

How to create a Smart Contract on NEAR Protocol

https://wallet.testnet.near.org and select the ‘create account’ option. Then, insert the testnet account name that you wish to use

Pre-requisites

Rust toolchain

A NEAR account

NEAR command-line interface (near-cli)

Set up requirements

Using the Rust environment create a NEAR account and then install near-cli.

Install Rust toolchain

Install the Rustup

Install the Rustup:

curl — proto ‘=https’ — tlsv1.2 -sSf https://sh.rustup.rs | sh

Configure the current shell

Insert the following command into the configuration of your current shell:

source $HOME/.cargo/env

Add the wasm target to the blockchain network

rustup target add wasm32-unknown-unknown

Repository Creation

cargo new calculator

cd calculator

Editing Cargo.toml

[package] name = “rust-counter-tutorial” version = “0.1.0” authors = [“NEAR Inc <[email protected]>”] edition = “2018”

[lib] crate-type = [“cdylib”, “rlib”]

[dependencies] near-sdk = “3.1.0”

[profile.release] codegen-units = 1 # Tell `rustc` to optimize for small code size. opt-level = “z” lto = true debug = false panic = “abort” # Opt into extra safety checks on arithmetic operations https://stackoverflow.com/a/64136471/249801 overflow-checks = true

Create Lib.rs

use near_sdk::borsh::{self, BorshDeserialize, BorshSerialize};

use near_sdk::{env, near_bindgen};

near_sdk::setup_alloc!();

#[near_bindgen]

#[derive(Default, BorshDeserialize, BorshSerialize)]

pub struct Calculator {

x: i64,

y: i64,

}

#[near_bindgen]

impl Calculator {

pub fn get_numbers(&self) -> (i64, i64) {

(self.x, self.y)

}

pub fn add_numbers(&mut self) -> i64 {

let add = self.x + self.y;

let log_message = format!(“Addition of numbers {} + {} = {}”, self.x, self.y, add);

env::log(log_message.as_bytes());

add

}

pub fn sub_numbers(&mut self) -> i64 {

let sub = self.x — self.y;

let log_message = format!(“Subtraction of numbers {} — {} = {}”, self.x, self.y, sub);

env::log(log_message.as_bytes());

sub

}

pub fn mul_numbers(&mut self) -> i64 {

let mul = self.x * self.y;

let log_message = format!(

“Multiplication of numbers {} * {} = {}”,

self.x, self.y, mul

);

env::log(log_message.as_bytes());

mul

}

pub fn div_numbers(&mut self) -> i64 {

let div = self.x / self.y;

let log_message = format!(“Division of numbers {} / {} = {}”, self.x, self.y, div);

env::log(log_message.as_bytes());

div

}

}

// use the attribute below for unit tests

#[cfg(test)]

mod tests {

use near_sdk::MockedBlockchain;

use near_sdk::{testing_env, VMContext};

use crate::Calculator;

fn get_context(input: Vec<u8>, is_view: bool) -> VMContext {

VMContext {

current_account_id: “alice.testnet”.to_string(),

signer_account_id: “robert.testnet”.to_string(),

signer_account_pk: vec![0, 1, 2],

predecessor_account_id: “jane.testnet”.to_string(),

input,

block_index: 0,

block_timestamp: 0,

account_balance: 0,

account_locked_balance: 0,

storage_usage: 0,

attached_deposit: 0,

prepaid_gas: 10u64.pow(18),

random_seed: vec![0, 1, 2],

is_view,

output_data_receivers: vec![],

epoch_height: 19,

}

}

// mark individual unit tests with #[test] for them to be registered and fired

#[test]

fn addition() {

// set up the mock context into the testing environment

let context = get_context(vec![], false);

testing_env!(context);

// instantiate a contract variable with the counter at zero

let mut contract = Calculator { x: 20, y: 10 };

let num = contract.add_numbers();

println!(“Value after addition: {}”, num);

// confirm that we received 1 when calling get_num

assert_eq!(30, num);

}

#[test]

fn subtraction() {

// set up the mock context into the testing environment

let context = get_context(vec![], false);

testing_env!(context);

// instantiate a contract variable with the counter at zero

let mut contract = Calculator { x: 20, y: 10 };

let num = contract.sub_numbers();

println!(“Value after subtraction: {}”, num);

// confirm that we received 1 when calling get_num

assert_eq!(10, num);

}

#[test]

fn multiplication() {

// set up the mock context into the testing environment

let context = get_context(vec![], false);

testing_env!(context);

// instantiate a contract variable with the counter at zero

let mut contract = Calculator { x: 20, y: 10 };

let num = contract.mul_numbers();

println!(“Value after multiplication: {}”, num);

// confirm that we received 1 when calling get_num

assert_eq!(200, num);

}

#[test]

fn division() {

// set up the mock context into the testing environment

let context = get_context(vec![], false);

testing_env!(context);

// instantiate a contract variable with the counter at zero

let mut contract = Calculator { x: 20, y: 10 };

let num = contract.div_numbers();

println!(“Value after division: {}”, num);

// confirm that we received 1 when calling get_num

assert_eq!(2, num);

}

}

Test the code

Test the smart contract code via cargo,

cargo test

You will then receive output in the form of:

Compiling rust-counter-tutorial v0.1.0 (/home/yogesh/Blogs/rust-counter) Finished test [unoptimized + debuginfo] target(s) in 1.57s Running unittests src/lib.rs (target/debug/deps/rust_counter_tutorial-7e3850288c4d6416)

running 4 tests test tests::division … ok test tests::addition … ok test tests::multiplication … ok test tests::subtraction … ok

test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s

Doc-tests rust-counter-tutorial

running 0 tests

test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s

Compile the code

cargo build — target wasm32-unknown-unknown — release

Deploying smart contracts

You will deploy it using the near-cli testnet of your NEAR account.

near login

near deploy — wasmFile target/wasm32-unknown-unknown/release/rust_counter_tutorial.wasm — accountId YOUR_ACCOUNT_HERE

You will then receive output in the form of:

To see the transaction in the transaction explorer, please open this url in your browser https://explorer.testnet.near.org/transactions/CqEh5tsh9Vo827DkN4EurECjK1ft8pRdkY2hhCYN9W8i Done deploying to yogeshsha.testnet