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Vijaya Bhaskar
Vijaya Bhaskar

27 Followers

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Published in Coinmonks

·Mar 2, 2022

TokenGating- Grant exclusive access to owners of select NFT collections

We all know about the gated communities where the access to the facilities inside, is reserved for the members exclusively. Token-Gating is something similar to this. Tokens/NFTs can be used to give/determine the level of access to an event or online content. there are many usecases for this. Recently there…

Nft

3 min read

TokenGating- Grant exclusive access to owners of select NFT collections
TokenGating- Grant exclusive access to owners of select NFT collections
Nft

3 min read


Published in Coinmonks

·Mar 1, 2022

Pre-compute contract deployment address using CREATE2

In this article lets see how we can calculate the deployment address of our contract on the EVM blockchain before deploying. Here we make use of CREATE2 opcode of EVM which is similar to CREATE opcode. Let us deploy “TestContract” and match the address of deployment with our precomputed address…

Evm

4 min read

Pre-compute contract deployment address using CREATE2
Pre-compute contract deployment address using CREATE2
Evm

4 min read


Published in CoinsBench

·Feb 27, 2022

(Part-2)How to create NFTs and display them using React for beginners

We have created and deployed the NFT smart contract on our local chain in part-1 here. In this part, let us interact with that smart contract using web3js and Metamask. Part-2 Interacting with the deployed smart contract During our deployment in Part-1, the deployed address of the smart contract can be seen in the truffle terminal along…

Smartcontractdevelopment

5 min read

How to create NFTs and display them using React for beginners (Part-2)
How to create NFTs and display them using React for beginners (Part-2)
Smartcontractdevelopment

5 min read


Published in CoinsBench

·Feb 27, 2022

(Part-1)How to create NFTs and display them using React for beginners

In this article lets create NFT using ERC1155 standard and lets also display them using react. ERC1155 vs ERC721 As we know ERC721 is the standard implementation for NFTs, ERC1155 is another standard which can handle both ERC721 and ERC20 objects i.e. both NFTs and Tokens. ERC1155 shines in game implementations where NFTs…

Smartcontractdevelopment

5 min read

How to create NFTs and display them using React for beginners (Part-1)
How to create NFTs and display them using React for beginners (Part-1)
Smartcontractdevelopment

5 min read


Published in CoinsBench

·Feb 21, 2022

Transaction Order dependence(TOD) in Ethereum node 😐 😜

Let's look at the Transaction Order dependence(TOD) issue… Before that, let us dive into some basics. As we all know Ethereum(or any blockchain) is a transaction-based distributed state machine with a shared state. Each transaction changes the state of the machine. A number of transactions are grouped/bundled together (and shared…

Smart Contracts

4 min read

Transaction Order dependence(TOD) in Ethereum node 😐 😜
Transaction Order dependence(TOD) in Ethereum node 😐 😜
Smart Contracts

4 min read


Published in CoinsBench

·Feb 19, 2022

Re-entrancy — Still a significant threat?

Reentrancy became infamous during 2016 DAO hack when millions of dollars worth of crypto was stolen. Read on to see how it is still relevant. What is Re-entrancy? In simple terms re-entrancy means, the call to an external, untrusted contract(“called” contract) results in the program execution re-entering the “calling” contract which was not…

Solidity

2 min read

Re-entrancy — Still a significant problem ?
Re-entrancy — Still a significant problem ?
Solidity

2 min read


Published in CoinsBench

·Feb 18, 2022

Unchecked Return value in Smart Contracts as an attack surface

Solidity contracts can call other contracts (execute their code just by knowing their deployed address on the chain)and even can create and deploy contracts. call(), callcode(), delegatecall(), staticcall(), are some of the functions used to call external code/contract. …

Solidity

3 min read

Unchecked Return value in Smart Contracts as an attack surface
Unchecked Return value in Smart Contracts as an attack surface
Solidity

3 min read


Published in CoinsBench

·Feb 17, 2022

Function visibility vulnerabilities in smart-contracts

In blockchain, deployed code is immutable. …

Solidity

3 min read

Function visibility vulnerabilities in smart-contracts
Function visibility vulnerabilities in smart-contracts
Solidity

3 min read

Vijaya Bhaskar

Vijaya Bhaskar

27 Followers

here for the tech(web3). There is a long wayto go… Lets go

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