Add ISO-8553 PoC implementation

[dastansam]

Project Abstract

This application is in response to the ISO-8583 RFP.

In this project I aim to implement the proof of concept for the ISO-8583 standard in Substrate. The implementation will be based on the extensive research done by Adit Patel in the following repository.

Grant level

• Level 1: Up to $10,000, 2 approvals
• Level 2: Up to $30,000, 3 approvals
• Level 3: Unlimited, 5 approvals (for >$100k: Web3 Foundation Council approval)

Application Checklist

• The application template has been copied and aptly renamed (project_name.md).
• I have read the application guidelines.
• Payment details have been provided (bank details via email or BTC, Ethereum (USDC/DAI) or Polkadot/Kusama (USDT) address in the application).
• The software delivered for this grant will be released under an open-source license specified in the application.
• The initial PR contains only one commit (squash and force-push if needed).
• The grant will only be announced once the first milestone has been accepted (see the announcement guidelines).
• I prefer the discussion of this application to take place in a private Element/Matrix channel. My username is: @_______:matrix.org (change the homeserver if you use a different one)

[Noc2]

Thanks for the application. In general, it looks really good. But your first milestone currently doesn't contain any Substrate-specific deliveries. Could you try to change this? Also, it would be nice to have some simple mock-ups or initial designs for the web app.

[dastansam]

hey @Noc2,

thanks for the swift feedback.

I addressed your feedback and here is the summary of what changed:

• Added more details to the first milestone, specifically about how merchant app and PCIDSS Compliant Gateway will interact with the Substrate chain. PCIDSS Compliant Gateway is tightly coupled to offchain workers, in fact, the combination of both forms a centralized oracle mentioned in the research document. The gateway also does some of the expensive, repetitive tasks (by querying on-chain, basically) before the messages reach offchain workers, so that they only focus on validating and dispatching transactions. I will also include some kind of cryptographic authorization to ensure only offchain workers are consuming messages from the message broker. I think this part of the milestone will be the most challenging and time consuming.
• Added mockups for merchant app. I won't be focusing a lot of my time on UI, but there will be a payment window page that provides both card and crypto payments.
• Generally added more documentation where it was lacking

[Noc2]

Thanks for the super quick update here. I'm happy to go ahead with it and will share it with the rest of the team.

[keeganquigley]

Thanks @dastansam for wanting to work on this! I remember when I talked with Adit Patel, he agreed that the biggest problem here was how to implement chargebacks. I can imagine that other features like authorization holds might also be complex. Anyway, cool to see that you've already done some research on it.

Happy to approve; also Adit mentioned that he's willing to help any team who wanted to work on it, so feel free to reach out to him.

[dastansam]

Hey @keeganquigley,

thanks for your feedback!

I read Adit's comments and planning to personally reach out to him

[github-actions]

Congratulations and welcome to the Web3 Foundation Grants Program! Please refer to our Milestone Delivery repository for instructions on how to submit milestones and invoices, our FAQ for frequently asked questions and the support section of our README for more ways to find answers to your questions.

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[keeganquigley]

Hi @dastansam how is milestone 2 coming along?

[keeganquigley]

pinging @dastansam

[keeganquigley]

Hi @dastansam are you still working on this grant? Would love to hear an update and find out if you've been having any difficulties.

[keeganquigley]

Hi @dastansam please note that if we don't hear back after two weeks we will go ahead and close this grant due to inactivity.

[dastansam]

hey @keeganquigley,

I lost access to my email for this account and didn't get the notification. I am still working on the grant and was planning on submitting the delivery soon. Is it possible to open this grant again?

[dastansam]

PR for re-opening here: #2184

hey @keeganquigley,

I lost access to my email for this account and didn't get the notification. I am still working on the grant and was planning on submitting the delivery soon. Is it possible to open this grant again?

[keeganquigley]

Thanks @dastansam glad you want to continue working on it, that's no problem.

[keeganquigley]

Hi @dastansam how is it coming along are you still planning to submit this delivery soon?

[dastansam]

Hi @dastansam how is it coming along are you still planning to submit this delivery soon?

Hey, yes, hopefully by the end of this week. I'm preparing testing guidelines and docs. Thank you for your patience again!

[Polkadot-Forum]

This pull request has been mentioned on Polkadot Forum. There might be relevant details there:

https://forum.polkadot.network/t/polkadot-iso-20022-integration/8483/1