Questions tagged [qrcode]

QR code is an ISO-standardized two-dimensional barcode format. In cryptocurrencies, it is generally used to represent an account's public address.

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Is there a blockchain QR-code model for product traceability? [closed]

I'm looking to make a product traceability application that uses QR-code with blockchain to increase security. I went online looking for a few models but couldn't find them. Does anyone have an idea? ...
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1 answer
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how to get users address that payed using my QR code in png?

Hello i have a QR code in png containing our address where he can send any BNB. My question is how to get the users address so he gets our own token.
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1 answer
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Sell NFT by QR Code for specific amount

Currently I'm writing an app to interact with NFTs in a game. Therefore I want to implement a function to buy and sell an NFT by using a QR code. The seller should be able to create a QR code for his ...
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1 vote
1 answer
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Which Mobile Wallet support *data* field?

Referring to this link ERC: Standard URI scheme with metadata, value and byte code #67 Since it was proposed in 2016, may I know if there is any mobile wallet that can scan QR code with these 4 ...
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1 vote
2 answers
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How do I develope a QR code for a 64 character hex string generated ethereum address?

I am learning about how the 64 character hex string generated Eth Address is formed. Is there a program for this?
3 votes
1 answer
695 views

How make Ethereum QR-code with Input Data?

how i can make QR code with address, amount, gas price and Input Data? Is it possible?
4 votes
2 answers
2k views

Ethereum Qr-code with amount?

How should a qr-code be formated with an amount in it? The npm package ethereum-qr-code uses the following format according to EIP-67: ethereum:0x7cB57B5A97eAbe94205C07890BE4c1aD31E486A8?gas=42000&...
2 votes
0 answers
208 views

"data" field is not working in Ethereum QR Code mobile payment

Recently, I am working on generating an Ethereum QR code that mobile wallet (e.g. imToken) can scan and pay from there. But the problem is that I cannot pass the data value. I use C# code to generate ...
0 votes
1 answer
2k views

Using QR codes for my smart contract

I'm thinking of a service that unconditionally gives out ERC20 based tokens once a user scans a specific QR code that I have created (It may be a random passphrase, address etc...) Is there a way to ...
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1 answer
103 views

Generate timed transactional deposit wallets

I am looking at developing a service that can take a payment in Eth and return a erc-20 token to their desired address. I want to generate a new address per transactional user. What would be the ...
1 vote
1 answer
687 views

QR-Code prefixed or not?

should I put the prefix ethereum: before the address when creating a QR-Code ? When I read a QR-Code generated by https://www.myetherwallet.com, the prefix is missing. But I found conflicting ...
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1 vote
1 answer
259 views

how do I enable transaction QR codes in the Parity Wallet browser app?

I'm Parity 1.7 installed via Homebrew on MacOS. I cannot see the QR code for signing transactions. How do I enable this feature? Parity//v1.7.0-beta-5f2cabd-20170727/x86_64-macos/rustc1.18.0 I see ...
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3 votes
0 answers
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Parity Signer qr code not working, stuck on "Parity Signer: Pending"

I'm having issues with with Parity when trying to do any type of transfer-I get stuck on the "parity signer: pending" screen. The prompt I get is "Please scan the transaction QR on your external ...
6 votes
1 answer
2k views

Jaxx Wallet QR Code shows IBAN and etherscan shows 0 balance

When I scan the QR code from the Jaxx Etherium wallet I get iban:XE482ECP16CJCBQHZ7S844BEK8K1SDOX0HH but it shows my address as 0x1488e397bc44c56d801a6e96217554a0e310ecb5 in the app it shows I ...
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7 votes
3 answers
2k views

Can any information beside the address be encoded into QR code?

I want to create a contract. I want to generate a QR code to invoke this contract. I want to present this QR code to a user. Is there a way to embed any additional information into the QR code (...
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