this would reduce the size of the mempools, and make it easier to run a node, and save space on the blockchain.   It could be done like a difficulty adjustment where the minimum fee increases if the average block is >90% full, and decreases otherwise.

If I lose my phone, is it possible to bypass 2FA using the master address login?

There should be a way to sign up to get an email whenever a new event betting market is created

This is not true.  Coinbase's miner fees are often too low to get a quick confirmation.   2% is orders of magnitude higher than miner fees tho unless you're buying coffee.   I could afford it, but 2% feels like overpaying.   If I use Wasabi coinjoin I get directly linked to one particular rando who might have dirty coins, which is not as good as getting clean coins from coinbase.

I wouldn't need to use it for gambling directly.  I could use it to rebalance funds between wallets that I use for gambling, without paying 2% for a mixer.

Blockchain.com doesn't do this commingling.  Would it if I upgrade to the interest-paying version?

Coinbase's commingling of user funds is actually useful in terms of preventing non-state adversaries from linking any two transactions sent from the same coinbase wallet.  It's like every transaction goes through a free mixer, but the mixer can be subpoenaed.  I got backed off of coinbase for gambling.  Are there any other online wallets that commingle funds like coinbase does?

Suppose:
1. You run a few separate businesses that send and receive coins, and you don't want them to be associated with each other via spending each other's coins.
2. You don't want the hassle of manually selecting which coins to spend for each transaction because you do 20 transactions manually every day.  Also for convenience it has to be a PC wallet.  (for added security I run it inside an encrypted single purpose virtual machine where 99.9% of malware won't find it).
3. You memorized the 12 word seed phrase that Electrum automatically generated, and you want all your funds to be recoverable by it.

My old solution is to have several separate wallets inside a single account on blockchain.info.  But this is extremely laggy and I don't trust them because the site is so buggy, plus it started offering loans and interest like a bank. So I'm switching to self custody.

What I want is a single wallet, based on that single seed phrase, which has separate compartments that work like separate wallets.  I'm not too concerned about retaining segregation of funds in the event that I need to recover from the seed phrase (although theoretically encrypted metadata for that purpose could be hidden on the blockchain)

Alternatively, maybe I should run several instances of electrum with separate wallets based on appending alpha, bravo, charlie, etc to the original seed phrase.  Will it let me do that?

What do you guys think I should do?

don't give this scammer your money

They haven't changed anything about the PF system since I exposed them 5 months ago.   Wixiplay was already caught blatantly cheating, so they have nothing to lose by continuing to cheat.  Do not waste your money here.  Very small bets (under 0.1mbtc) might be fair, which explains the 9900x = 0.5LTC = $23 payout posted above.

It does not disclose the next server seed hash until after you send your next client seed to the server.  So it's possible that the server seed is being generated AFTER the server already knows your client seed, which makes the provably fair system completely insecure and useless.

I tested it out today again and on my very first roll the server seed didn't match the server seed hash.

I did a 2x coin flip for my entire 1mbtc deposit.  Before the round it said serverseed_hash = e09d311bd7d007bce4141ea30b7ea726cad88b592af8993d3c45b4a6d15e2138

After the round, it said serverseed = 5f14e5353a6b5d4ab3039a232cf9f72924d77cbbac1cb750ff7f1b5ea0c85809TeUBURTRQY, which doesn't hash to what they said it would hash to.

This is the smoking gun of cheating.  They are changing the server seed to alter the outcome of the game.

Here's a screenshot:  https://i.ibb.co/xSTMLVc/wixi-cheats.png

Their bonuses seemed too good to be true and now I know why.

Admins, can we please get red warning thing at the top of the wixiplay thread?

BTW here's my php source code for checking the PF:

The domain was registered by GoDaddy in Romania.  I went ahead and contacted GoDaddy's abuse email

http://whois.domaintools.com/wixiplay.io
https://i.ibb.co/7pGjDGf/wixi-domain-reg.png

I played some more rounds, carefully verifying each round. I used https://wtools.io/php-sandbox with this php source code:


Most rounds verified, but occasionally it generated an abnormally long server seed whose hash didn't match, and I always lost those rounds.  So the site has multiple ways of cheating.

1. If you don't request the server seed hash in advance it can change the server seed to achieve whatever result it wants, undetectably
2. even if you do request the server seed hash in advance, it will still sometimes change the server seed to achieve whatever result it wants.

Definitely 100% scam.

I agree.  this combination of factors is suspicious:
1. new server seed every round
2. the server seed hash is only transmitted to the client when you click for it.

Whenever you don't click to request the server seed hash, the server KNOWS it's not being watched and that it can get away with cheating, by changing the server seed to make you lose the roll.

When I click "generate new server seed" it does NOT show the old server seed.  Also, the server seed hash changes between every round, so there's no reason for it to not automatically show last round's server seed.

I just played 523 coin flips (49.5% chance of success with a 1% house edge).  Only won 199 of them.  The probability of winning 199 or fewer out of 523 is 8.9696e-8, or about one in ten million.

Their provably fair system doesn't work because they only show the server seed hash, but they never reveal the server seed of past rounds, so there is no way to do the calculation to verify that those rounds were fair.

They say the algorithm is:


But this is all they show you in the fairness dialog.
https://i.ibb.co/1KDN8s5/wixi-fairness.png

It never shows the server seed for the previous round, so you can't check the fairness.  This is a fake PF system.

I recommend avoiding the site until they fix their PF.

how is the blackjack provably fair?

How many decks are used?

There are some serious flaws in the provably fair system:

1.  The client doesn't automatically change its seed after each game, and this completely nullifies the security.   If the server knows what the playerSeed will be before it generates the initial shuffle, then it can keep re-shuffling until it finds an initial shuffle that prevents the player from winning with a given playerSeed.
2.  You need at least 226 bits of entropy to reach all 52! permutations in a fischer-yates shuffle, but the seeds are much smaller than that.
3.  The code that generates the playerseed is hidden away in JS includes along with thousands of lines of other javascript.

I suggest inlining some code to re-generate the playerseed every time, with at least 226 bits of entropy, e.g. [1,2,3,4,5].map(x => Math.random().toString(36).slice(2)).join('')

edit:  it's not a scam, I just had bad luck and underestimated the variance on the slot I was playing.   It's a good casino.  They always pay out quickly.