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matthewarkin

159 karma · joined August 16, 2013

Hey, I'm Matt Work in payments, credit/debit card authorization and clearing for 6 years now.

email: matt@mattarkin.com

[ my public key: https://keybase.io/matthewarkin; my proof: https://keybase.io/matthewarkin/sigs/pgXbGbYwrLUNrV1uF7InbSAPkDV9pqf2Gl1MlPc3NgE ]

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matthewarkin··on Ask HN: My VPS got hacked and now I'm facing a massive bill. What can I do?
I had the same thing happen to me. I wrote about it on my blog http://mattarkin.com/protect-your-azure-linux-vm-aka-how-to-.... Basically I complained to Microsoft, they said they'd waive the charge but since it was for a linux vm they said they couldn't cover it. Then I complained to American Express claiming it was an unauthorized and fraudulent charge. Amex sent the dispute to Microsoft and they never responded so I wont the chargeback.
matthewarkin··on Guide List for Startups Applying to Y Combinator
Yea, I and a couple friends interviewed for S13 (maybe it was S12), and while preparing is definitely helpful there is no way you can have scripted answers to everything. That assumes you know what they are going to ask (and chances are if you know what they are going to ask, you didn't make something clear). We did a couple practice interviews with YC alums and the questions they asked ended up being quite different from what was actually asked in the room. To me at least, the interview seemed much more like a discussion about our idea and its merits and issues than what people may normally think an interview to be (of a VC asking you intense questions and pulling apart every single hole in your financial model).

On the other hand, maybe they saw three college freshman and decided to go easy on us.

matthewarkin··on Move Fast, Don't Break Your API
One thing is that Stripe's documentation only shows the latest version, not the version of the API you are on. So for instance the API docs will show that the way you create a refund is charge->refunds->create(), but if your first request was before multiple refunds were a thing that api call would error since the api is expecting charge->refund().
matthewarkin··on WePay (YC S09) Launches WePay Clear, a Stripe Competitor with Fraud Protection
Stripe Marketplaces isn't actually a product, there are two products, Stripe Connect and then the Trasnfers API. In the Stripe Connect set up every vendor in the marketplace has their own Stripe account and then each vendor is responsible for things like chargebacks, disputes, etc. The marketplace is just authorized to initiate API calls on behalf of the vendor (so the marketplace can handle the disputes and refunds, but the money comes from the vendor).

With the Transfers API, the marketplace just ACHs funds from their Stripe account to the vendor's bank account, so the Marketplace has to handle all the liability.

matthewarkin··on EBay to Spin Off PayPal
As someone who has worked a ton with the Stripe API, whenever I use Braintree's (vZero) API it looks soo much like they are trying to copy Stripe, but fail so so hard. Want to get the subscriptions for a customer? Sure, first get all the cards the customer has, then iterate through that list of cards and combine all the subscriptions for each card. Oh, is that a paypal customer, well credit cards and paypal accounts are separate and each can contain subscriptions.
matthewarkin··on Amazon Takes a Big Step Toward Making Its Own Deliveries
Amazon has also been partnering with USPS to offer Sunday deliveries.
matthewarkin··on Microsoft is killing the Nokia and Windows Phone brands
"All this recent evidence led us to speculate whether Microsoft is simply planning to just use Windows for its brand in the future, and that appears to be the case"

Is speculation really necessary? Microsoft seems to have publicly announced "One Windows." And for those not really following Windows Phone and Threshold (Windows 9), the future seems to be an OS that adapts to the device you're on. If you're on a phone, a Phone app appears, large enough screen, the desktop becomes available, etc.

matthewarkin··on Google's .prod TLD is live
Doesn't look like it, per http://www.google.com/registry/ only .みんな and .soy are up for registrations.
matthewarkin··on Home Depot Investigates a Possible Data Breach
Visa/Mastercard/Amex all offer systems that can automatically alert merchants that you got a new card. I've just got my American Express card replaced and about half the merchants that I have a subscription with were still able to charge my card without my intervention.
matthewarkin··on Chip-based credit cards are a decade old; why doesn’t the US rely on them yet?
I probably get asked for ID less than 1% of the time. In general it tends to be in odd locations too. In my experience a less than $20 dollar purchase is more likely to have the employee ask for my ID than a $200 purchase.
matthewarkin··on The New GitHub Issues
I can filter by not having a label attached! Ex. "-label:"90 - Complete"" will show all issues not labeled complete!
matthewarkin··on Amazon Cognito
So Amazon is now competing with Facebook / Parse?
matthewarkin··on Update to Microsoft Takedown – Domains Fully Restored
ICANN (the people in charge of DNS) is based in the US.
matthewarkin··on Ask HN: How can a college student build credit?
Like everyone has said, get a credit card and pay it in full. Ideally pay it in full before your statement comes. Many starter credit cards will have a ridiculously low limit, my first discover card was $500. The issue with paying just on-time and not before the statement date is that discover reports your balance as of the day the statement prints so my reported available credit was always dismal.

I also had some American Express charge cards, they don't have a huge affect on your credit but they may help you get an American Express credit card if you have a thin file.

Once you got some credit, you can go for a car loan. I opted for a lease (since they tend to be cheaper then a new car). My current credit score tends to hover around a 720 FICO and I'm a rising junior, will probably go up a decent amount when I remember to pay my discover card in full before the statement date.

matthewarkin··on 0.2% Facebook desktop clients access FB via forged SSL certificates
I think some corporate firewalls might do some https decryption as well.
matthewarkin··on Send money to a customer’s checking account using their debit card number
Welcome to the banking system. If they're going threw the debit card channels, through Visa, they might charge a fee, Balanced's bank may charge a fee, Balanced has to pay its employees, pay for hosting its servers, make sure they are PCI compliant, etc.
matthewarkin··on Send money to a customer’s checking account using their debit card number
Its my understanding that Visa / Mastercard will protect non pin based debit transactions (since they are really credit transactions). ACH is a different beast, from what it sounded like when reading the article, Balanced is somehow determining account numbers / routing numbers from bank accounts, which would be bad if they got hacked. On the other hand, they could just be issuing refunds to the cards.
matthewarkin··on Source code of ASP.NET
thats why its called vNext, not vCurrent, still a work in progress
matthewarkin··on Show HN: Hipster Domain Finder
just bought three domains because of this, now to figure out what to do with them.
matthewarkin··on Mt. Gox commences bankruptcy proceedings [pdf]
Yes, Creditors are people who Mtgox owes money (you've extended a line of credit of X bitcoins or fiat to them). This is really not a what if. The whole purpose of bankruptcy is because the entity can meet all its financial obligations, if the trustee could make enough revenue to pay all the users than company assets (bitcoins in wallet) would equal company liabilities (bitcoins that belong to users). After all the stuff is sold, and expenses related to the administration of bankruptcy proceeding is paid, the remaining funds is distributed in an order of priority to the creditors (so back wages normally have priority to other liability). Assuming all users are in the same priority level, it would be a safe judgement to assume that each user would get a percentage of the remaining funds = user's number of bitcoins / total number of user bitcoins. This is how it works in the US at least, I'm not versed with Japanese bankruptcy protection laws but assuming its similar, you'd be lucky to get a portion of the money you're owed. If I recall correctly, they owed about 700,000 in btc and they found 200,000, assuming no other assets / liabilities / expenses you'd get 28% of your btc/fiat back.
matthewarkin··on Mt. Gox commences bankruptcy proceedings [pdf]
Basically what happens under bankruptcy is the trustee sells all the assets of the business. From that revenue, the trustee pays any costs related to the administration of the bankruptcy proceeding, whats left over gets distributed to the creditors.
matthewarkin··on Mt. Gox commences bankruptcy proceedings [pdf]
Gone sounds so permanent, they're somewhere, will you be getting them back? Probably not. At most you might get ((sum of MtGox assets sold at liquidation prices) - (amount owed to non users, past due bills, etc))/(number of bitcoins they owe their users) * 20. Read: Not much
matthewarkin··on Waffle.io
Huboard http://huboard.com is the Kanban board my employer uses for github and its pretty nice. It'll autoupdate if any team member changes the board.
matthewarkin··on Faster Transfers Beta (US only)
I got an email like 2 weeks ago saying I was auto-enrolled in the two day transfer. I guess I'm just special where I don't have to fill out beta signups?
matthewarkin··on Uber for Drones
It has not, lets see how long till they get a cease and desist from the FAA.
matthewarkin··on Introducing Opencall
Any reason why contributions on the ocall.org site goes to a contact form?

A change to BSD instead of GPL would be nice too :)

I've been meaning to build something similar so I'll probably be bit of a contributor

matthewarkin··on Microsoft Azure: Cutting prices on compute and storage
They do have to pay licensing, its money that goes from one business unit to another within the Microsoft Corp, thus to not destroy the Azure budget, they pass the license costs to you instead of eating it.
matthewarkin··on Ask HN: Thumbnail API
Yea, that is a tricky part. Most of the video encoding services can be configured to take a thumbnail at the beginning, at a user determined point, or every X seconds.

In my use case,I don't necessarily have any reason to have the entire video encoded and it adds an unnecessarily complicated structure.

Currently I just take a thumbnail .1 second in (this also allows me to utilize minimal bandwidth since I don't download the entire video), but it should be fairly easy to add a parameter

matthewarkin··on $30/year flat rate for shipping flowers
Its Amazon Prime for flowers. After seeing this, I went to Amazon and searched for Roses, apparently I don't need 1800Flowers. http://www.amazon.com/12-Long-Stem-Red-Roses/dp/B00E45RBSG/r...
matthewarkin··on Fixed - The easiest way to fix a parking ticket
Saw these guys (at least the same idea) pitch at a local incubator. Good job on getting launched, I've got a couple unpaid tickets.
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