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Author Topic: CoinCard - Buying Amazon $ and gift cards with Bitcoin  (Read 36601 times)
mndrix (OP)
Michael Hendricks
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March 10, 2011, 11:39:16 PM
 #81

CoinCard now has an API.  It lets you programmatically place orders for converting your Bitcoins into gift cards or PayPal payments.  See the documentation for more details.

Thanks for suggestions all the suggestions offered above.  I'll add some features and gift cards as time permits.
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mndrix (OP)
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March 11, 2011, 03:17:08 PM
 #82

A customer sold a large batch of Bitcoins through CoinCard last night but entered an invalid email address for his PayPal account.  Emails to the customer bounce and PayPal reports the payment as unclaimed.  I was curious what happens in this case, so I thought I'd post it here in case others are interested too.

PayPal holds the Mass Pay payment for 30 days.  If it remains unclaimed after that time, the money is refunded to the payer.  Of course, once that happens, I'll resend the payment to the rightful owner, but there's nothing I can do until then.

This highlights one more way in which Bitcoin is superior to other payment methods: one can easily verify that a recipient's address is valid before sending payment.
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March 11, 2011, 06:44:12 PM
 #83

I have an Amazon Prime membership. An Amazon card would be really nice option.

Buy & Hold
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March 11, 2011, 09:11:49 PM
 #84

A customer sold a large batch of Bitcoins through CoinCard last night but entered an invalid email address for his PayPal account.  Emails to the customer bounce and PayPal reports the payment as unclaimed.  I was curious what happens in this case, so I thought I'd post it here in case others are interested too.

PayPal holds the Mass Pay payment for 30 days.  If it remains unclaimed after that time, the money is refunded to the payer.  Of course, once that happens, I'll resend the payment to the rightful owner, but there's nothing I can do until then.

This highlights one more way in which Bitcoin is superior to other payment methods: one can easily verify that a recipient's address is valid before sending payment.

How does one go about verifying that the address is valid?

Use my referral codes for Bitcoin faucets and I'll send you 30% of my referral bonus - Win/Win! PM for details on all sites available or use one of the links here.

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mndrix (OP)
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March 11, 2011, 09:35:18 PM
Last edit: March 11, 2011, 10:05:55 PM by mndrix
 #85

How does one go about verifying that the address is valid?

The Bitcoin JSON API provides the `validateaddress` method which you can use from the command line like this:

Code:
$ bitcoin validateaddress 1J4ymLi5tVSutKQqGqXjM4rTahryKaU171
{
    "isvalid" : true,
    "address" : "1J4ymLi5tVSutKQqGqXjM4rTahryKaU171",
    "ismine" : true,
    "account" : ""
}

Of course, this doesn't prove that the address belongs to anyone in particular Smiley
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March 11, 2011, 09:42:27 PM
 #86

How does one go about verifying that the address is valid?

The Bitcoin JSON API provides the `validateaddress` method which you can use from the command line like this:

Code:
$ bitcoin validateaddress 1J4ymLi5tVSutKQqGqXjM4rTahryKaU171
{
    "isvalid" : true,
    "address" : "1J4ymLi5tVSutKQqGqXjM4rTahryKaU171",
    "ismine" : true,
    "account" : ""
}

Of course, this doesn't prove that the belongs to anyone in particular Smiley

Ah, so it isn't something that anybody could easily do to make sure they didn't type in an address that was not valid.

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March 11, 2011, 10:18:35 PM
 #87

Ah, so it isn't something that anybody could easily do to make sure they didn't type in an address that was not valid.

You can use this to do the same thing:
http://blockexplorer.com/q/checkaddress

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March 11, 2011, 10:36:18 PM
 #88

Ah, so it isn't something that anybody could easily do to make sure they didn't type in an address that was not valid.

You can use this to do the same thing:
http://blockexplorer.com/q/checkaddress

Yes, anybody can do this, and any halfway decent Bitcoin service will already do it.

This particular case was someone who entered an incorrect PayPal address, not an incorrect Bitcoin address.

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mndrix (OP)
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March 16, 2011, 10:06:57 PM
 #89

I've updated the API so that it includes error codes along with the error messages.  This should make it easier for your code to handle errors without having to parse English Smiley
mndrix (OP)
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March 29, 2011, 10:23:40 PM
 #90

I've finished preliminary support for buying Newegg gift cards through CoinCard.  The biggest problem is that Newegg takes 24-48 hours to process the gift cards on their side before emailing the gift card code to the buyer.

For those of you interested in Newegg, would you still buy the gift cards even with this delay?
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March 30, 2011, 12:38:12 AM
 #91

I've finished preliminary support for buying Newegg gift cards through CoinCard.  The biggest problem is that Newegg takes 24-48 hours to process the gift cards on their side before emailing the gift card code to the buyer.

For those of you interested in Newegg, would you still buy the gift cards even with this delay?

Is there an option for Newegg Canada or is it strictly gift cards for Newegg US?
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March 30, 2011, 03:03:57 AM
 #92

I've finished preliminary support for buying Newegg gift cards through CoinCard.  The biggest problem is that Newegg takes 24-48 hours to process the gift cards on their side before emailing the gift card code to the buyer.

For those of you interested in Newegg, would you still buy the gift cards even with this delay?

Yes, the delay sucks but cutting out paypal would be great!  I would use the newegg option.

mndrix (OP)
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March 30, 2011, 07:59:01 PM
 #93

Is there an option for Newegg Canada or is it strictly gift cards for Newegg US?

The cards can only be used for Newegg US.  At least that's what I understand from reading the terms of service on the test cards I've purchased.
mndrix (OP)
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March 30, 2011, 08:03:59 PM
 #94

Response so far has been positive both here and in OTC, so I'll proceed with the final implementation details for Newegg.  Thanks for the feedback!
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March 30, 2011, 09:05:14 PM
 #95

can I make them ship goods outside US with those cards Smiley

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March 30, 2011, 09:52:52 PM
 #96

Is there an option for Newegg Canada or is it strictly gift cards for Newegg US?

The cards can only be used for Newegg US.  At least that's what I understand from reading the terms of service on the test cards I've purchased.

Yes that's correct. Even Newegg Canada has a separate Canadian giftcard center available here, https://secure.newegg.ca/GiftCertificate/GiftCardStep1.aspx

Do you think CoinCard could support both US and Canadian cards?
mndrix (OP)
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March 30, 2011, 10:20:00 PM
 #97

Do you think CoinCard could support both US and Canadian cards?

Without looking into it at all, it should be able to support Newegg Canada.  I'll see how popular Newegg US gift cards first.
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April 09, 2011, 06:29:29 AM
 #98

Feature request:  "sendmany" for CoinCard.

[Tycho]'s use of coincard's paypal API is pretty neat, and I was thinking of doing something similar.  However, if I have a queue of paypal payments to make, it would be much more useful to send a single, large BTC transaction to coincard, and specify multiple (address, amount) pairs for paypal recipients.

Bonus points if this can be done entirely via JSON  Smiley


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April 09, 2011, 06:30:27 AM
 #99


Feature request:  "sendmany" for CoinCard.

[Tycho]'s use of coincard's paypal API is pretty neat, and I was thinking of doing something similar.  However, if I have a queue of paypal payments to make, it would be much more useful to send a single BTC transaction to coincard, and specify multiple (email address, amount) pairs for paypal recipients.

Bonus points if this can be done entirely via JSON  Smiley



off-topic, but when you had 1337 posts, it changed to Leet lol

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mndrix (OP)
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April 11, 2011, 03:41:59 PM
 #100

Feature request:  "sendmany" for CoinCard.

That's a good idea.  I'll think about how to implement it on my side.  The PayPal API supports it since Mass Pay is designed for creating one transaction that sends to many recipients.

One side effect could be lower PayPal payouts for "sendmany" customers.  Since I determine the exchange rate based on market depth, a large CoinCard order combined with thin Mt Gox bids could produce a lower exchange rate than placing several small orders spaced 15 minutes apart (giving bots time to fill in the order book again).
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