User John Murphy

4 votes

1 answer

706 views

Is it possible to check a token transaction history for an account with web3js?

asked Jul 25, 2018 at 15:32

3 votes

1 answer

476 views

What is the reason for not just issuing a token on the testnet (e.g. Rinkeby) for your token so that Gas costs are free (Rinkeby ETH from faucet)?

tokens gas testnets ropsten rinkeby

asked Aug 9, 2018 at 8:25

3 votes

1 answer

1k views

If a contract's function calls a function of another contract within it, is the address of the contract the msg.sender?

solidity contract-development tokens ico crowdsale

asked Feb 9, 2018 at 11:37

3 votes

1 answer

3k views

How can I output the latest block number to a web page using web3.js 1.0.0 beta?

web3js javascript infura

asked Jul 19, 2018 at 9:27

2 votes

2 answers

3k views

Constantly getting "Gas estimation failed" error when attempting to deploy ERC20 Token contract on Rinkeby testnet

tokens contract-deployment erc-20 gas gas-estimate

asked May 30, 2018 at 11:47

2 votes

0 answers

548 views

Can you deploy a contract from a Ledger Nano S using Remix?

remix contract-deployment etherscan ledger-nano-s hardware-wallets

asked Jun 7, 2018 at 11:18

2 votes

4 answers

22k views

How to fix checksum mismatch in downloaded node for Ethereum Wallet?

go-ethereum mist ethereum-wallet-dapp nodes checksum

asked Mar 6, 2018 at 9:52

2 votes

1 answer

4k views

Remix compiler is not loading and gives "Compiler not yet loaded." message when attempting to force

solidity contract-development remix compiler browsers

asked Mar 14, 2018 at 9:52

2 votes

1 answer

795 views

"Deploy contract" dropdown menu not displaying in Ethereum Wallet

contract-development contract-design contract-deployment contract-debugging

asked Nov 24, 2017 at 8:29

2 votes

3 answers

449 views

How do I pass a token as a constructor parameter for a Crowdsale contract

ico crowdsale openzeppelin

asked Feb 2, 2018 at 14:11

2 votes

2 answers

5k views

What does "0x0 Transaction mined but execution failed" mean when attempting to deploy via Remix on Rinkeby?

contract-development contract-deployment remix metamask rinkeby

asked Feb 15, 2018 at 9:46

2 votes

1 answer

5k views

How to fix "invalid argument 0: json: cannot unmarshal hex number with leading zero digits into Go struct field CallArgs.value of type *hexutil.Big"?

contract-development remix metamask ico crowdsale

asked Feb 15, 2018 at 10:47

2 votes

1 answer

913 views

What is an example of an ICO or Crowdsale that used the Open Zeppelin RefundVault contract?

solidity contract-development ico crowdsale openzeppelin

asked Feb 22, 2018 at 13:49

2 votes

2 answers

424 views

What is the most common 3rd party KYC provider to use for an ICO? [closed]

tokens ico crowdsale

asked Feb 23, 2018 at 13:41

1 vote

3 answers

734 views

Using Openzeppelin's crowdsale contract as a base, how can I set the rate to be a decimal number?

contract-development tokens ico crowdsale openzeppelin

asked Feb 14, 2018 at 9:50

1 vote

1 answer

291 views

Why would data be passed into a contract constructor rather than just hardcoding it, which would be less costly?

solidity contract-development gas constructor state-variable

asked Feb 9, 2018 at 14:01

1 vote

1 answer

1k views

Contracts will not compile using truffle with the "emit" keyword included in front of events [duplicate]

contract-development truffle events error truffle-compile

asked Mar 15, 2018 at 13:32

1 vote

3 answers

317 views

How do ICOs with token price linked to fiat currency prices work?

contract-development contract-design ico crowdsale price

asked Apr 27, 2018 at 9:25

1 vote

0 answers

484 views

Is there an API or library available to integrate an ERC20 compatible wallet into my android app?

wallets tokens erc-20 ico android

asked Feb 22, 2018 at 11:45

1 vote

1 answer

249 views

Can a smart contract be set up so that a function to forward funds sends a set percentage of the Ether received to 2 or more contracts?

contract-development contract-design openzeppelin fallback-function payable

asked May 21, 2018 at 13:43

1 vote

1 answer

160 views

Will Casper be "backwards compatible" with currently issued tokens such as ERC20 tokens?

contract-development tokens proof-of-stake casper protocol

asked Jun 1, 2018 at 11:31

1 vote

1 answer

176 views

Will the introduction of sharding have an effect on the functionality of currently deployed smart contracts or the EVM?

solidity contract-invocation evm plasma sharding

asked Jun 1, 2018 at 14:41

1 vote

1 answer

73 views

Is there an explanation in the documentation (or elsewhere) for why so many of web3.js functions return Promises?

web3js javascript documentation

asked Jul 19, 2018 at 14:17

1 vote

1 answer

1k views

How to create wallet with web3j and web3swift like with web3js web3.eth.accounts.create(); function?

web3js web3j ios

asked Jul 25, 2018 at 9:14

1 vote

1 answer

283 views

Transferring an ERC-20 using web3js 1.0.0

web3js erc-20 javascript raw-transaction

asked Jul 26, 2018 at 9:36

0 votes

1 answer

210 views

What programming language or framework should I use to automate wallet creation and transfer of tokens when people send payment via paypal? [closed]

web3js transactions wallets coinbase payments

asked Jun 8, 2018 at 9:24

0 votes

1 answer

67 views

Can Raiden Network transfers occur offline?

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asked Jun 15, 2018 at 10:48

0 votes

1 answer

42 views

If a malicious party attempts to close a Raiden payment channel with incorrect balances, can they steal the deposit?

security balances payments raiden state-channels

asked Jun 15, 2018 at 11:32

0 votes

2 answers

1k views

Infura tutorial no longer accurate, how to get the initial curl HTTPS POST to work?

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asked Jun 27, 2018 at 14:16

0 votes

1 answer

762 views

How can I create a wallet and display the address, public and private key using web3js?

web3js wallets accounts addresses infura

asked Jun 28, 2018 at 9:48

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44 Questions

Is it possible to check a token transaction history for an account with web3js?

What is the reason for not just issuing a token on the testnet (e.g. Rinkeby) for your token so that Gas costs are free (Rinkeby ETH from faucet)?

If a contract's function calls a function of another contract within it, is the address of the contract the msg.sender?

How can I output the latest block number to a web page using web3.js 1.0.0 beta?

Constantly getting "Gas estimation failed" error when attempting to deploy ERC20 Token contract on Rinkeby testnet

Can you deploy a contract from a Ledger Nano S using Remix?

How to fix checksum mismatch in downloaded node for Ethereum Wallet?

Remix compiler is not loading and gives "Compiler not yet loaded." message when attempting to force

"Deploy contract" dropdown menu not displaying in Ethereum Wallet

How do I pass a token as a constructor parameter for a Crowdsale contract

What does "0x0 Transaction mined but execution failed" mean when attempting to deploy via Remix on Rinkeby?

How to fix "invalid argument 0: json: cannot unmarshal hex number with leading zero digits into Go struct field CallArgs.value of type *hexutil.Big"?

What is an example of an ICO or Crowdsale that used the Open Zeppelin RefundVault contract?

What is the most common 3rd party KYC provider to use for an ICO? [closed]

Using Openzeppelin's crowdsale contract as a base, how can I set the rate to be a decimal number?

Why would data be passed into a contract constructor rather than just hardcoding it, which would be less costly?

Contracts will not compile using truffle with the "emit" keyword included in front of events [duplicate]

How do ICOs with token price linked to fiat currency prices work?

Is there an API or library available to integrate an ERC20 compatible wallet into my android app?

Can a smart contract be set up so that a function to forward funds sends a set percentage of the Ether received to 2 or more contracts?

Will Casper be "backwards compatible" with currently issued tokens such as ERC20 tokens?

Will the introduction of sharding have an effect on the functionality of currently deployed smart contracts or the EVM?

Is there an explanation in the documentation (or elsewhere) for why so many of web3.js functions return Promises?

How to create wallet with web3j and web3swift like with web3js web3.eth.accounts.create(); function?

Transferring an ERC-20 using web3js 1.0.0

What programming language or framework should I use to automate wallet creation and transfer of tokens when people send payment via paypal? [closed]

Can Raiden Network transfers occur offline?

If a malicious party attempts to close a Raiden payment channel with incorrect balances, can they steal the deposit?

Infura tutorial no longer accurate, how to get the initial curl HTTPS POST to work?

How can I create a wallet and display the address, public and private key using web3js?