user avatar
user avatar
user avatar
John Murphy
  • Member for 4 years, 5 months
  • Last seen more than a month ago
  • Galway City, Ireland
4 votes
1 answer
706 views

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

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)?

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?

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?

2 votes
2 answers
3k views

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

2 votes
0 answers
548 views

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

2 votes
4 answers
22k views

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

2 votes
1 answer
4k views

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

2 votes
1 answer
795 views

"Deploy contract" dropdown menu not displaying in Ethereum Wallet

2 votes
3 answers
449 views

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

2 votes
2 answers
5k views

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

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"?

2 votes
1 answer
913 views

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

2 votes
2 answers
424 views

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

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?

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?

1 vote
1 answer
1k views

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

1 vote
3 answers
317 views

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

1 vote
0 answers
484 views

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

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?

1 vote
1 answer
160 views

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

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?

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?

1 vote
1 answer
1k views

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

1 vote
1 answer
283 views

Transferring an ERC-20 using web3js 1.0.0

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]

0 votes
1 answer
67 views

Can Raiden Network transfers occur offline?

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?

0 votes
2 answers
1k views

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

0 votes
1 answer
762 views

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