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13

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If crypto art is stored off-chain, how does the collector have any control over their NFT's contents if the server where it is saved shuts down?

answered 6 hours ago William Entriken 1,719

1

vote

1

answer

11

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How to extract the URL of a crypto art as it appears within the NFT? and technical details like ERC-token type?

erc-721 nft erc-1155

answered 7 hours ago Richard Horrocks 28.7k

1

vote

1

answer

15

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How to recognize if a website is a DApp?

dapps dapp-development

answered 8 hours ago Richard Horrocks 28.7k

1

vote

1

answer

15

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What tokenized assets can be stored on-chain?

tokens erc-721 nft erc-1155 off-chain

answered 6 hours ago William Entriken 1,719

0

votes

1

answer

12

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How to validate a transaction from any block in Blockchain

blockchain private-blockchain data-validity

answered 5 hours ago Rob Hitchens 42.3k

0

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0

answers

12

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From what source does etherscan.io aggregate and broadcast data that appears on the blockchain ledger?

blockchain etherscan blocks hash

asked 10 hours ago user610620 285

0

votes

0

answers

15

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ETH miner recommendation in 2021 (Nvidia RTX 2070)

mining ethminer nvidia

modified 14 hours ago Nogard 51

1

vote

0

answers

11

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My contract shows a zero balance on Metamask

solidity contract-development remix metamask

asked 14 hours ago Aqua 11

0

votes

1

answer

18

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How to write a simple token contract which token can only be transferred within the specific geographical region?

solidity tokens erc-20 wallets transfer

answered 20 hours ago Sergi Juanati 1,165

0

votes

1

answer

25

views

Testing Contract: Transaction has been reverted by the EVM

solidity contract-development ether

answered 21 hours ago Miroslav Nedelchev 1,686

0

votes

1

answer

16

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ERC20 Token Batch Send Security

solidity contract-development tokens erc-20

answered 17 hours ago 3DLures 53

0

votes

1

answer

13

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Chaining smart contract deployments through instantiation in constructors

contract-development contract-design contract-deployment truffle-migration

answered 19 hours ago Rob Hitchens 42.3k

1

vote

2

answers

32

views

Can we mint 5 gigabyte video NFTs?

blockchain erc-721 nft erc-1155

modified yesterday Richard Horrocks 28.7k

0

votes

2

answers

11

views

How to ensure that a string parameter to a function is not empty?

string solidity-0.5.x

answered 11 hours ago Ashish kumar 11

0

votes

0

answers

43

views

+50

Ethereum wallet recommendation

wallets accounts

modified 7 hours ago Nogard 51

0

votes

0

answers

69

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How to convert ERC crypto art NFTs into a Cardano NFT?

blockchain tokens erc-721 nft erc-1155

modified yesterday user610620 285

0

votes

0

answers

31

views

Make transaction feeless solidity 0.8.0

solidity

modified yesterday Eric 1

0

votes

0

answers

14

views

Uniswap fork only fetches 14 times

ethereum-wallet-dapp json-rpc contract-debugging uniswap

asked yesterday BennyJonson 1

0

votes

1

answer

16

views

Why can't I establish a socket connection with Infura? Project ID is correct, I triple checked

nodejs infura websocket

answered yesterday Ismael 24.2k

0

votes

0

answers

22

views

I created a contract by mistake with a deposit of ether. How do I withdraw it?

contract-development

modified yesterday Ismael 24.2k

2

votes

1

answer

28

views

What if a chain is compromised?

security sidechain vulnerability mainnet

answered 23 hours ago Ismael 24.2k

0

votes

0

answers

14

views

Storing 100 million transactions in private ethereum blockchain

solidity go-ethereum fast-sync proof-of-authority

asked yesterday sharif2008 264

0

votes

0

answers

11

views

Upgrading ERC-20 Token Inherited Contracts

solidity contract-development tokens erc-20 upgrading

asked yesterday zbys 111

0

votes

0

answers

12

views

How to use HardHat behind a proxy

hardhat

modified 5 hours ago DogEatDog 101

0

votes

1

answer

13

views

`.at()` function no longer available for web3.eth.Contract?

solidity web3js

answered yesterday noqcks 121

0

votes

0

answers

20

views

NFT Token Ownership Transfer Initiation

solidity go-ethereum tokens nft

modified yesterday JF0001 177

1

vote

0

answers

28

views

can someone help me find what happened to my eth

ether

asked yesterday Sundeep Kumar 97

0

votes

1

answer

15

views

Wondering about an etherscan transaction, did not receive swapped coin

dapps etherscan decentralized-exchange

modified yesterday Sergi Juanati 1,165

0

votes

0

answers

15

views

Collecting crypto art from multiple NFT platforms in the same wallet

tokens metamask wallets nft

asked yesterday user610620 285

1

vote

0

answers

14

views

Smart contract that will add users to a blockchain and another smart contract that'll verify if the user already exists

contract-development blockchain ganache

asked yesterday Kirean 11

1

vote

1

answer

30

views

Can I use conversation messages stored on Blockchain

go-ethereum blockchain microsoft-azure

modified yesterday Sergi Juanati 1,165

0

votes

1

answer

27

views

EVM:out of gas while executing send

out-of-gas send

answered 23 hours ago Ismael 24.2k

1

vote

1

answer

23

views

How to find out the IP address of a MetaMask wallet's owner?

metamask wallets privacy paper-wallets

answered 2 days ago Richard Horrocks 28.7k

1

vote

0

answers

21

views

Solidity. Pushing a struct to an array. But that struct contains an array. Copying of type struct memory[] memory to storage not yet supported

solidity arrays struct

asked yesterday Carson Case 21

2

votes

1

answer

22

views

405 Method Not Allowed with websocket geth RPC

go-ethereum json-rpc websocket

answered yesterday Dobit 53

1

vote

1

answer

17

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How to use Trust Wallet instead of Metamask on mobile browser?

web3js metamask dapps

answered yesterday Carson Case 21

0

votes

1

answer

24

views

What is .div() method in solidity?

solidity

modified 2 days ago Richard Horrocks 28.7k

0

votes

1

answer

16

views

How to write to contract directly? (other than Etherscan)

etherscan

answered 2 days ago Mars Robertson 765

0

votes

0

answers

16

views

How to optimally use map of maps in solidity?

solidity mapping gas-estimate

asked 2 days ago lebed2045 235

2

votes

2

answers

70

views

variables is brackets ()

solidity contract-development contract-design returndata

answered Feb 25 at 21:56 Richard Horrocks 28.7k

0

votes

2

answers

27

views

Solidity: Unable to insert data into Struct

solidity

answered 2 days ago Miroslav Nedelchev 1,686

0

votes

0

answers

17

views

Non-native tokens versus Native tokens

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asked 2 days ago user610620 285

0

votes

0

answers

24

views

Killing a smart contract and recovering funds inside

contract-invocation

modified 2 days ago Achala Dissanayake 4,470

0

votes

3

answers

41

views

Function _setTokenURI() in ERC721 is gone in OpenZeppelin ^0.8.0 contracts

solidity openzeppelin openzeppelin-contracts

answered yesterday Sergi Juanati 1,165

0

votes

1

answer

23

views

Authentication between smart contracts based their addresses - Is it safe?

solidity security authentication

answered 2 days ago 3DLures 53

0

votes

0

answers

14

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Eth internal txn sent but not credited my wallet [closed]

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modified 2 days ago Sergi Juanati 1,165

0

votes

2

answers

19

views

Declaration Error: Identifier already declared

solidity remix

answered 2 days ago Sergi Juanati 1,165

0

votes

0

answers

27

views

What is bsc testnet node address?

solidity ethereum-wallet-dapp ethereumjs uniswap swaps

asked 2 days ago Erdem Öztürk 1

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