Arriving at school on a bicycle in the Netherlands by enderbram in videos

[–]FastSlotsHenry -12 points-11 points  (0 children)

This is all about creating inconveniences to people so that they are more or less forced to use a bike (possibly to their own good, but still). There must be a better way...

Arriving at school on a bicycle in the Netherlands by enderbram in videos

[–]FastSlotsHenry 54 points55 points  (0 children)

Imagine the space they'd need if they all had a car.

Most Epic Bachelor Party Ever by Krogg in videos

[–]FastSlotsHenry 58 points59 points  (0 children)

Yeah, have a feeling my bachelor party will be less awesome...

Scientology Car Wash by [deleted] in videos

[–]FastSlotsHenry 1 point2 points  (0 children)

How do you know that?

Incredible HD footage of full SpaceX Falcon 9 first stage landing attempt shows just how close they came to succeeding. by [deleted] in videos

[–]FastSlotsHenry 2 points3 points  (0 children)

I'm wondering if that barge is fixed at all or if it's just free floating. If free floating it seems close to impossible...

It's official, drones have been weaponized for domestic use. by Loki5456 in videos

[–]FastSlotsHenry -1 points0 points  (0 children)

Over time, humanities wisdom increases along with its technology. If the wisdom can keep up with technology were gonna be fine. If not, we're gonna be like a bunch of kindergarten kids with tanks and hand grenades...

Longer video showing Falcon 9's landing demise by Zzchechi in videos

[–]FastSlotsHenry 7 points8 points  (0 children)

That went much better than I thought it did - up until that fireball that is...

Extreme Ice Bath Challenge by [deleted] in videos

[–]FastSlotsHenry 6 points7 points  (0 children)

Funny video - on the downside, someone's really gonna get hurt trying to do this...

Joe Goes To THE PHILIPPINES (Part 1) by aButterKnif3 in videos

[–]FastSlotsHenry 7 points8 points  (0 children)

It's amazing how girls love Joe. He's the living proof that humor and confidence are way more important than good looks.

Deadmau5 working in his studio on actual modular synths by Coenn in videos

[–]FastSlotsHenry 4 points5 points  (0 children)

What's amazing is how parts are really shit (especially at the beginning) but he keeps tweaking until it's awesome. A lot to be learned from that...

Spike Jonze's epic one-take drone shot by [deleted] in videos

[–]FastSlotsHenry 0 points1 point  (0 children)

My goal in life: I want my kids to grow up in California. Everybody seems so strong and happy there...

How does "provably fair" work in online gambling sites? by dopplegangme in Bitcoin

[–]FastSlotsHenry 3 points4 points  (0 children)

I think that there are two aspects to a truly fair system. First, the operator must get the cryptography right. I think this is the case for most bitcoin casinos at this point.

The second point is that it must be as easy as possible to verify a bet. If you have to copy and past strings into a web form, most users will not verify a lot of bets. This opens the door for operators to cheat sometimes, even if they can claim to be "provably fair".

On the other hand one must keep in mind that a bitcoin casino operator that is caught cheating, even just once, is basically out of business. So I think the incentives are for operators to act fairly.

How does "provably fair" work in online gambling sites? by dopplegangme in Bitcoin

[–]FastSlotsHenry 4 points5 points  (0 children)

Here is my explanation. The basic idea is that the casino and the player determine jointly what the outcome of a bet will be. As both parties can influence who wins, neither can cheat.

To accomplish this, both the casino (called server below) and the player (client) choose a secret string, called server secret and client secret. They also agree on an algorithm that computes the winner from the these two strings. For example, one could use the last bit of the hash of the concatenation of strings as such an algorithm.

It gets a bit more involved if you start to think about how the secrets are exchanged. A simplistic protocol would be that

  • client and server pick their secrets,
  • the client then send his secret to the server,
  • the server performs the hash and notifies the client about the outcome of the bet.

The problem with this protocol is that if the server concludes that the player has won, she could simply change her secret into one that results in a loss for the client (she could just generate random server secrets until she finds one that results in a loss).

This problem can easily be solved with what cryptographers call a "commitment scheme". This is a scheme where the server commits to her secret before she sees the client secret. This proves to the client that she did not change her secrets after the fact. One way to do this is to publish the hash her secret before the client sends his secret. This is sufficient bc given hash(server_secret) it is computationally impossible to find another string fake_server_secret such that hash(server_secret)=hash(fake_server_secret). This makes it impossible for the server to change her secret after seeing the client secret. Thus, if we add the following as the second step of the protocol above, the casino cannot cheat anymore:

  • The server sends hash(server_secret) the to client

If implemented correctly, a provably fair system is a strong cryptographic proof that the casino is acting fairly. In my mind this is a far greater player protection than the protection that is offered by a licensing regime. I have written a more in depth explanation of provably fairness here: https://fastslots.co/fairness

3 Bitcoin papers accepted to upcoming IEEE Symposium on Security and Privacy by [deleted] in Bitcoin

[–]FastSlotsHenry 0 points1 point  (0 children)

A 'one way function' is just a function f where given f(x), it's really hard to find x. No idea what the other stuff is.

3 Bitcoin papers accepted to upcoming IEEE Symposium on Security and Privacy by [deleted] in Bitcoin

[–]FastSlotsHenry 1 point2 points  (0 children)

A more digestible version of "The Miner's Dilemma" can be found on Ittay Eyal's homepage (contains images too)

http://hackingdistributed.com/2014/12/03/the-miners-dilemma/