How can I add image into my Hyperledger instance

+1 vote

I am trying to make a registry based on hyperperledger with composer .

1- How to integrate image upload with hyperledger Fabric and Composer and How to create a smart contract for the registry

hyperledger-fabric blockchai

Jun 8, 2018 in Blockchain by charlie_brown
• 7,720 points
1,903 views

1 answer to this question.

+1 vote
Best answer

In your registry, you can Base64-ify your image/content/media and store as String. In your modeled Asset in Hyperledger Composer, one attribute for 'imageString' is defined as 'String in your Hyperledger Composer model file.

Technically, this is also a Node question. Using Javascript, eg. fs.readFileSync(‘yourimageFile.jpg’).toString(‘base64’);, you should be able to convert the image to a Base64 string in your code.

please also see this link for more information - it tells you how to go about storing your images (media, PDFs etc) - and the comments at the end.

-> How to deal with forms,images,videos of an asset in hyperledger composer

answered Jun 8, 2018 by aryya
• 7,460 points

selected Aug 16, 2018 by Omkar

Related Questions In Blockchain

0 votes
1 answer

How can i import the csv/excel files into my contract and record the transaction ?

You can not directly import an excel/csv ...READ MORE

answered Apr 16, 2019 in Blockchain by Omkar
• 69,230 points
3,508 views
+3 votes
4 answers

How do I add a new node on a Hyperledger network?

You can do this by generating the crypto ...READ MORE

answered Apr 7, 2018 in Blockchain by Christine
• 15,790 points
5,500 views
+1 vote
1 answer

Hyperledger - How can I use transaction certificates to enforce privacy?

The transaction certificates don't actually address privacy ...READ MORE

answered Apr 17, 2018 in Blockchain by Perry
• 17,100 points
803 views
+1 vote
1 answer
0 votes
1 answer

Hyperledger Sawtooth vs Quorum in concurrency and speed Ask

Summary: Both should provide similar reliability of ...READ MORE

answered Sep 26, 2018 in IoT (Internet of Things) by Upasana
• 8,620 points
1,399 views
+1 vote
1 answer
0 votes
1 answer

Invalid Batch or signature in Savtooth

This will solve your problem import org.apache.commons.codec.binary.Hex; Transaction txn ...READ MORE

answered Aug 1, 2018 in Blockchain by digger
• 26,740 points
911 views
0 votes
1 answer
0 votes
1 answer

Where can I find the reference format for crypto-config.yaml and configtx.yaml Hyperledger Fabric files?

The sample config files in the Hyperledger Fabric main ...READ MORE

answered Jun 27, 2018 in Blockchain by aryya
• 7,460 points
1,325 views
webinar REGISTER FOR FREE WEBINAR X
REGISTER NOW
webinar_success Thank you for registering Join Edureka Meetup community for 100+ Free Webinars each month JOIN MEETUP GROUP