User Mikko Ohtamaa

178 votes

13 answers

49k views

Upgradeable smart contracts

asked Mar 29, 2016 at 14:48

29 votes

2 answers

6k views

Ethereum smart contract security checklist

solidity contract-development security

asked Sep 6, 2016 at 19:09

17 votes

5 answers

14k views

web3.js with promisified API

web3js javascript nodejs

asked Jan 17, 2017 at 7:52

13 votes

2 answers

836 views

Secret ballot voting

contract-design voting

asked Aug 4, 2016 at 18:47

11 votes

1 answer

8k views

Rationale behind 256-bit words in EVM

evm

asked Jul 23, 2016 at 21:24

9 votes

1 answer

640 views

Check if a contract implements specific ABI using JSON-RPC

go-ethereum contract-development json-rpc contract-invocation python

asked May 9, 2016 at 8:04

9 votes

1 answer

3k views

Iterating over all public values of a mapping in web3

web3js contract-design mapping

asked May 9, 2016 at 14:33

8 votes

2 answers

7k views

Getting contract balance over JSON RPC

go-ethereum contract-development json-rpc

asked Jul 7, 2016 at 2:38

8 votes

2 answers

6k views

Getting Go-Ethereum current network id

go-ethereum web3js networkid

asked Jan 10, 2017 at 21:41

7 votes

1 answer

9k views

Connecting the wallet of to your dApp and different Ethereum wallet types

web3js metamask wallets walletconnect

asked Apr 16, 2020 at 10:02

7 votes

3 answers

6k views

Vyper vs. Solidity - benefits and differences

solidity vyper

asked Apr 28, 2020 at 9:58

7 votes

1 answer

112 views

Standard contracts for assets

shares

asked Mar 18, 2016 at 18:12

7 votes

2 answers

2k views

Solidity docstrings

solidity

asked Jul 20, 2016 at 4:27

7 votes

1 answer

369 views

Tracing back tripped require() to a source code line

solidity contract-debugging evm solc

asked Nov 23, 2017 at 9:59

6 votes

1 answer

335 views

Gnosis wallet app distribution

wallets multisignature gnosis

asked May 16, 2017 at 20:12

6 votes

2 answers

2k views

Bitcoin price oracle

bitcoin oracles

asked Dec 22, 2016 at 17:30

6 votes

1 answer

3k views

delegatecall and function return values

solidity delegatecall

asked Aug 17, 2016 at 13:27

6 votes

1 answer

712 views

Gasless transaction and easy token Solidity receiver callbacks for ERC-20 tokens

erc-20 gas layer-2

asked Feb 26, 2020 at 9:41

5 votes

1 answer

1k views

Alternatives for Truffle for running and writing tests

truffle testrpc testing typescript

asked Mar 5, 2020 at 21:49

5 votes

1 answer

103 views

Historical state in mainnet EVM

go-ethereum parity evm

asked Sep 28, 2018 at 14:48

5 votes

2 answers

2k views

ERC-20 tokens and freezing accounts

solidity contract-development erc-20

asked Nov 12, 2016 at 0:46

5 votes

2 answers

3k views

Deriving Ethereum address from Bitcoin address

addresses private-key bitcoin secp256k1

asked Jan 18, 2017 at 17:40

5 votes

1 answer

1k views

Symbolic decoding of a transaction for Solidity

solidity contract-debugging raw-transaction

asked Jul 15, 2016 at 19:39

5 votes

2 answers

2k views

Including transactions fees when sending out ETH from a smart contract

solidity transactions contract-design gas fees

asked Jul 16, 2016 at 15:59

5 votes

0 answers

266 views

Exploit mitigation in EVM JIT

evm

asked Jul 29, 2016 at 16:11

5 votes

1 answer

188 views

Stepping through Solidity source code with deployed transaction from blockchain

solidity contract-debugging

asked Jul 7, 2016 at 13:49

4 votes

1 answer

697 views

Balance events on a hosted wallet

go-ethereum json-rpc

asked Jun 10, 2016 at 4:32

4 votes

1 answer

942 views

Creating eth_newFilter topic listeners with Python

contract-development python

asked May 8, 2016 at 8:52

4 votes

2 answers

1k views

Cannot verify contracts with libraries on Etherscan

solidity etherscan

asked Jun 6, 2017 at 18:53

4 votes

1 answer

448 views

Verifying Bicoin signed message in Ethereum smart contract

bitcoin signature public-key ecrecover

asked Dec 4, 2017 at 10:01

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71 Questions

Upgradeable smart contracts

Ethereum smart contract security checklist

web3.js with promisified API

Secret ballot voting

Rationale behind 256-bit words in EVM

Check if a contract implements specific ABI using JSON-RPC

Iterating over all public values of a mapping in web3

Getting contract balance over JSON RPC

Getting Go-Ethereum current network id

Connecting the wallet of to your dApp and different Ethereum wallet types

Vyper vs. Solidity - benefits and differences

Standard contracts for assets

Solidity docstrings

Tracing back tripped require() to a source code line

Gnosis wallet app distribution

Bitcoin price oracle

delegatecall and function return values

Gasless transaction and easy token Solidity receiver callbacks for ERC-20 tokens

Alternatives for Truffle for running and writing tests

Historical state in mainnet EVM

ERC-20 tokens and freezing accounts

Deriving Ethereum address from Bitcoin address

Symbolic decoding of a transaction for Solidity

Including transactions fees when sending out ETH from a smart contract

Exploit mitigation in EVM JIT

Stepping through Solidity source code with deployed transaction from blockchain

Balance events on a hosted wallet

Creating eth_newFilter topic listeners with Python

Cannot verify contracts with libraries on Etherscan

Verifying Bicoin signed message in Ethereum smart contract