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Re: [Taler] Questions re: Taler Project

From: Jordan Howlett
Subject: Re: [Taler] Questions re: Taler Project
Date: Sun, 10 Apr 2022 10:44:30 -0400

Thanks for the responses!

heh, ya the demo looks great. I guess I was wondering if there were some good installation instructions for a noob like me ;p

"Not sure but seems that OT is account-based and GNU Taler is token-based" ahh, good point. Thanks for pointing that out, makes sense. That may be the case. 

Really exciting to hear the wallet-to-wallet is in progress. 

I have an idea I want to run by you and I apologize if it completely doesn't make sense in the scope of Taler.

So, from my understanding it sounds like real world usage of Taler are semi blocked in that getting banks and the sort on board has been a challenge (of course correct me if i'm wrong, I picked that up from going through the many HN posts).

I'm wondering if one could essentially, in the mean time, do a system like the following:

We have:
* User 
* Merchant (or another user in wallet-to-wallet)
* Application (which also acts as an exchange for simplicity here)

* User is using some *trusted* application that lets them buy things. User enters their credit card in the application
* Application uses Stripe (or some service) to charge their credit card
* Application then issues "tokens" to the user using Talers blind signature system
* User then spends these tokens at the Merchant (or another user in w-t-w)
* Merchant (perhaps when balance reaches a certain threshold) can go to the Application and request a payout
* Application then accepts the tokens and can use Stripe again to send money to the merchant. 
* Step 3: Profit (minus Stripes fees)

Now, it may seem pointless, because you could say, why not just use Stripe directly. But you still get some extra privacy on the user side, and also have the ability to send microtransactions much smaller than is possible/feasible with Stripe currently with their pricing model. For example, sending 10c transactions with Stripe just doesn't work (from what I can tell).

The one thing I am not sure about, it sounds like in Taler the merchant is expected to exchange their tokens immediately with the exchange upon receiving the coins. But i'm not sure if that is a hard requirement or not?

Let me know if that makes any sense ;p

Again, thanks for entertaining my questions, really appreciate it!

On Sun, Apr 10, 2022 at 10:17 AM Sebastian Javier Marchano <sebasjm@gmail.com> wrote:
Hi Jordan,


On Sat, 9 Apr 2022 at 10:40, Jordan Howlett <jordan@howlett.io> wrote:
Hi, there. Jordan here.

I just came across Taler the other day (ashamed I have never heard of it!). I'm a long time fan of Bitcoin but I think what Taler is doing is a great compromise and has lots of potential.

I have a few questions which I would be super grateful if someone helped me out, and I apologize if they are answered somewhere. 

Also, if it's easier i'd love to jump on a call with someone and I am happy to compensate for your time :) Also, links to the docs are a fine answer, i'm going through but there is a lot to consume.

1. Could one theoretically deploy this today with a fake token? Set up a fake exchange that just issues made up money?
Yes, that's the demo deployment https://demo.taler.net/ and the fake currency is KUDOS
2. What is the major difference between this and Open Transactions?
Not sure but seems that OT is account-based and GNU Taler is token-based
3. For microtransaction usage: Could you request a lump sum from the exchange and then spend that in smaller increments with the merchant? Or would each microtransaction be requested individually from the exchange?
GNU Taler is like cash in some sense, you get a number of coins each of them with a defined amount. If what you are going to buy is 30 and you just have a coin of 50, the wallet is going to get 20 worth of new coins.  
4. What is the current status of wallet-to-wallet? Another question regarding that is - in wallet-to-wallet, would the receiver have to behave like a merchant in sense of the lack of privacy / taxation?
Status: Work in progress

I probably have a few more, going to keep digging in! Sorry for the blast of questions, but really cool project here, would love to help where I can!

Thanks :)

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