Search content
Sort by

Showing 20 of 108 results by marciks
Post
Topic
Board Games and rounds
Re: Ok, here's a 1BTC puzzle.
by
marciks
on 18/05/2019, 23:07:45 UTC
but it could also be fake.. or insanely hard to solve.. I want to belive this is true though.. let's wait until btc reachs to 1 million so more hunters will come
Post
Topic
Board Currency exchange
Re: NegocieCoins and TemBTC potential scam?
by
marciks
on 16/05/2019, 10:59:46 UTC
Excellent! It is funny because it is exponential and eventually, people will be making like 1 million per arbitrage cycle.. I am curious about how this is going to end..
Post
Topic
Board Brasil
Re: Volume NegocieCoins
by
marciks
on 27/04/2019, 20:40:59 UTC
Nessa postagem do facebook, um outro rapaz conhecido da comunidade Nano foi verificar no book history e não encontrou a tal ordem inteira de 1000 btcs.. O Bitcoin Banco é dono da Tem BTC, NegocieCoins e uma terceira conhecida como BAT que por coincidência tem preços de compra mais altos em uma que preço de venda em outra.. vi planilha com mais ou menos 0,3% de lucro em média por arbitragem.. ouvi dizer tbm que diariamente tão fazendo coisa de 7%.. eu to tentando encontrar argumentos pra ir lá em aproveitar isso, pq até agora não to conseguindo acreditar..

https://portaldobitcoin.com/leaxcoin-criptomoeda-bitcoin-banco-despenca-99/
Post
Topic
Board Brasil
Re: Volume NegocieCoins
by
marciks
on 26/04/2019, 15:39:51 UTC
Vocês não repararam no spread infinito entre a tembtc e a negociecoins? Comparem os preços de compra e venda das duas.. Da pra arbitrar infinitamente lol.. O que vocês acham?
Post
Topic
Board Development & Technical Discussion
Re: Are nonces predictable?
by
marciks
on 28/03/2019, 12:52:01 UTC
Given all answers, I think it will be better to use random.org :/ thanks, everyone
Post
Topic
Board Development & Technical Discussion
Re: Are nonces predictable?
by
marciks
on 26/03/2019, 17:20:30 UTC
Nonce seems to be "random" enough, but few block analysis mention otherwise. Quoting from https://bitcoin.stackexchange.com/q/24650,

Edited: Apr 18

I wrote a small program to collect some statistical data. From recent Dogecoin block #186,299 to #145,000 (the last mandatory update)

total 41,300 blocks

    number of odds = 3,891 (9.42%)
    number of evens = 37,409 (90.58%)
        ratio of odd to even is about 1:10
    Among the evens, the number of multiples of 256 = 35,106
        85% of total
        93.866% of evens

Update: 4/20

I recently also checked the nonces from block 552,780 to 253,898 of Litecoin.

totally 298,883 blocks.

    number of odds = 42,963 (14.374521%)
    number of evens = 255,920 (85.625479%)
    Among the evens, the number of multiples of 256 = 225,746
        75.529890% of total


Depending on your game and whether money is involved, using nonces isn't good idea. Set a number before game started and hash it with salting to keep fairness is better idea IMO.

Good info..

You guys could point me a better option though.. The idea behind this game is to select a winner (or more) from a list of particpants. The game would announce something like: "we are at block 568903 - result at 569000 (using nonces as seeds from block 568996 to 569000)"
Using multiple blocks would avoid nonces comming from only a miner, right?

This way we would have deterministic results from the algorithm.. The problem is the seed origin.. so I thought that nonces could be usefull..

Any thoughts?

hypothetically I could forge game results.. by using nonces, I couldn't
Post
Topic
Board Development & Technical Discussion
Re: Are nonces predictable?
by
marciks
on 26/03/2019, 15:09:08 UTC
So making a sum with like 5 block nonces would avoid this possible attack vector I suppose.. I just want to make sure that no one can predict results in a collective game.. Just getting some thoughts
Post
Topic
Board Development & Technical Discussion
Merits 1 from 1 user
Topic OP
Are nonces predictable?
by
marciks
on 26/03/2019, 14:30:18 UTC
⭐ Merited by ETFbitcoin (1)
In a hipotetic game that uses nonces as seed I mean.. would it be OK to use nonces for this purpose?
Post
Topic
Board Games and rounds
Re: Ok, here's a 1BTC puzzle.
by
marciks
on 14/02/2019, 22:17:30 UTC
I wrote Natasha Otomoski on youtube and this single video came out. I do not know if it helps solve the puzzle or not.  Grin

https://www.youtube.com/watch?v=AABkJ55Zz3A&t=11s


Coincidence? lol.. I dont think so...
Post
Topic
Board Services
Re: Doing small programming services in Python - Fair prices
by
marciks
on 14/12/2018, 21:00:45 UTC
can you code a simple crypto game?

Yes, I can
Post
Topic
Board Services
Re: Doing small programming services in Python - Fair prices
by
marciks
on 14/12/2018, 20:20:49 UTC
show something you did lately

One of the purposes of this topic is to build a portfolio \o/ .. So my github only has a tipbot for Tangram testnet.. Last thing I did that is a little bigger is a flask platform for friends, but it is not on github. Currently I am working on a triangular arbitrage bot for binance.

https://github.com/marciks/ - Github
Post
Topic
Board Services
Re: Doing small programming services in Python - Fair prices
by
marciks
on 14/12/2018, 16:05:51 UTC
Services.. Services... Small web plataforms.. Discord bots, telegram bots for a good price.. Pm/telegram!
Post
Topic
Board Services
Re: Doing small programming services in Python - Fair prices
by
marciks
on 11/12/2018, 22:56:46 UTC
bump it
Post
Topic
Board Bitcoin Technical Support
Re: I GOT HACKED AND LOST 1 MILLION
by
marciks
on 11/12/2018, 11:48:47 UTC

this is surprising - when I checked the wallet with virustotal it did not show me any backdoors or viruses. Since I deleted the files (in panic) I only have the download links now. But I think your check is accurate.

they must have obfuscated the code.. only after the hack their signature was added to virus total db and such.. the probablity that other people got hacked from this same wallet is high!

Hope you don't leave crypto after this.. as other member said, you are healthy and still can make money!
Post
Topic
Board Services
Re: Doing small programming services in Python - Fair prices
by
marciks
on 10/12/2018, 08:55:44 UTC
Bump
Post
Topic
Board Exchanges
Re: Official Liquid Exchange Thread
by
marciks
on 09/12/2018, 21:46:42 UTC
What about web sockets?
Post
Topic
Board Services
Doing small programming services in Python - Fair prices
by
marciks
on 07/12/2018, 17:02:31 UTC
I will program things in python for you.

Prices range from 10$ to 100$. I will accept any Top 20 CMC Crypto as payment.

Things to keep in mind:

* I'm still a Junior programmer so you wont get any super hyper great code from me.

* You can pay me after the job is done.. if you don't get satisfied enough, you don't need to pay.

* for this price, I'm not able to create huge plataforms for you.. just small things. but ask me first in Telegram so we can discuss what you have in mind.

* telegram bots, discord bots, trading bots, small web plataforms in flask are some of the things I can make.

Feel free to get in touch with me in Telegram: https://t.me/marciksz, PM or comment in the topic
Post
Topic
Board Gambling discussion
Re: how much would you pay for a lottery ticket?
by
marciks
on 05/10/2018, 14:01:50 UTC
I think I could have risked 25k satoshis and would buy a lottery ticket, but not before I knew:

1. The number of participants / win chance.

2. The prize amount / house edge.

3. The reputation of the lottery.

The 3rd point is the most important imo. If lottery had no reputation it would be more than likely as throwing away 25k sats.


Very good points

1 - few minuts before lotto result, it will be locked.. a list with every participant and its transaction id link will be provided so it's possible to check if all users paid for entering the game.. I think it is a good way to promote the lotto reputation (correct me if i'm wrong, please)

2 - will be provided that too from a command in telegram/discord..

3 - super important lol my next topic will be asking about this: how to increase the lotto reputation
Post
Topic
Board Gambling discussion
Re: how much would you pay for a lottery ticket?
by
marciks
on 01/10/2018, 18:50:33 UTC
Pretty good advice I heard is the 10% luckiest prize.. Second is the trust.. Will make some research on this topic.
Post
Topic
Board Gambling discussion
Re: how much would you pay for a lottery ticket?
by
marciks
on 30/09/2018, 21:41:56 UTC
2000 sats is non sense at all.. just removed it.. zero means that user would not play a telegram/discord lottery