Substrate and Polkadot Stack Exchange is a question and answer site for developers building blockchains with the Substrate SDK. It only takes a minute to sign up.

Sign up to join this community
Anybody can ask a question
Anybody can answer
The best answers are voted up and rise to the top

Explore our questions

1 vote
2 answers
35 views

Are there any tools available for creating a mock version of a contract in JS/TS?

2 votes
2 answers
109 views

Can you query the state of a contract at a given block number?

4 votes
4 answers
103 views

How to resolve duplicate lang item error?

5 votes
1 answer
60 views

How to receive input for mocked ink_env::test::ChainExtension

0 votes
3 answers
80 views

Parsing JSON in ink based Smart Contracts

5 votes
2 answers
58 views

Is circular call between multi contracts possible?

0 votes
1 answer
36 views

How to Send Additional Text Payload to Contract?

0 votes
1 answer
17 views

ChainBridge: how to use their CLI tool to deploy smart contracts on Ethereum networks?

3 votes
3 answers
161 views

cargo contract throws error about supplied arguments in ` #[ink(constructor)]` for version 3.0.1

2 votes
1 answer
44 views

How to get contract's code owner

2 votes
2 answers
46 views

How to receive multiple parameters of different types in chain extension

0 votes
0 answers
19 views

unable to map abi string to array to object with known keys source, contract

0 votes
1 answer
19 views

How to run multiple Integration tests at once in Redspot Ink!

3 votes
1 answer
58 views

What is the best way to make a cross contract call on Ink!

Browse more Questions