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Showing 17 of 17 results by micro4lpha
Post
Topic
Board Altcoin Discussion
Re: Why do people still use ETH?
by
micro4lpha
on 20/07/2021, 23:10:35 UTC
What in the hell are you smoking? Imagine if the second biggest blockchain valued at over 200 billion dollars were to send updates just cause we want it faster right now, lol. You need to get back to basics and understand what is going behind these systems. Also, just cause someone managed to create a new blockchain that is a little faster does not mean it is better or that it will EVER have a good ecosystem. Cough google social network, etc. etc. Also, worry about what you need, not what others want.
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Topic
Board Speculation
Re: Bitcoin will not be able to stay above $50k for 10 consecutive days ever again
by
micro4lpha
on 18/05/2021, 15:12:06 UTC
Time to buy I guess  Grin
Post
Topic
Board Bitcoin Discussion
Re: Everyone acting like there hasn’t been dips like this during a bitcoin bull mark
by
micro4lpha
on 18/05/2021, 02:21:30 UTC
Why do people think that an ATH will be the new stable price? From what I have seen that is rarely the case.
Post
Topic
Board Speculation (Altcoins)
Re: Ethereum price will now go down again after reaching 3k?
by
micro4lpha
on 03/05/2021, 21:28:44 UTC
Looks like it is really fighting to stay at $3300! Will it be able to withstand? Shocked
Post
Topic
Board Mining (Altcoins)
Re: Eth Pow algo isn't going away anytime soon
by
micro4lpha
on 25/04/2021, 23:33:23 UTC
It does feel like it’s dropping fast. Feels like too many miners for the price.
Post
Topic
Board Mining
Re: Mining at home - Small operation
by
micro4lpha
on 20/04/2021, 23:58:52 UTC
I'm currently mining with 1x3080 and 2x3060's and generating around 200 MH/s with a cost of 0.146 per kWh. Should be making around $650 a month at current ETH price and cost around $150 for electricity. It's definitely profitable.
Post
Topic
Board Mercado y Economía
Nuevo exchange en latinoámerica?
by
micro4lpha
on 30/03/2020, 01:06:13 UTC
Soy relativamente nuevo en el foro y llevo haciendo un poco de trading en Binance desde ya hace unos meses. He notado que no hay muchos exchanges con regulaciones o ubicados en latinoámerica. El más común y utilizado que veo es localbitcoins para intercambiar de cripto a fiat y vice versa. Hace unos meses me comenzó a salir publicidad sobre esta nueva empresa que al parecer acaba de lanzar su propio sistema de compra y venta y se ve muy interesante, les dejo el link para que lo juzguen ustedes mismos: https://www.obsidiam.com, según su sitio web están ubicados en Costa Rica.
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Topic
Board Speculation
Re: Bitcoin fall
by
micro4lpha
on 28/03/2020, 18:15:55 UTC
I believe it will fall to $700-800 at the end of the year.
There will be three or four more crashes in stock exchanges, each with a new virus being released. I read the next one is called "hantavirus".
Bitcoin will follow it, as it was proven to be worthless as a hedge against fiat financial crisis.

The halving might change this outcome, though, but we will not see the effect immediately.
One thing that might help is the exchanges reaching a consensus about putting circuit breakers on their books. These controls exists in the stock markets, and although they wont avoid the crash, it makes the impact less painful.

In the recent crash, bitcoin was poised to go to zero. It didnt happen because of a hardware failure in Bitmex servers. This level of vulnerability to derivatives dont happens with other assets. Exchanges should change their algos to provide some measure of security to its traders.

As for the retarded hodler cult, I would not listen to anything they say. In fact, I've put most of their members into the ignore list. They do make holders looks like retards. In fact, holding for a 500-year long bear market is a retarded thing, so do your research and sell a small part of your stash, if you feel this crisis might last more than you planned to hold bitcoin (usually five years for most people). Just dont go all-in in both directions, as banks are also vulnerable to this crisis and we dont know what governments are up to. Right now entire regions around the world have become prisons because a dozen people died from pneumonia.

Where do you get this stuff from? lol
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Topic
Board Off-topic
Merits 1 from 1 user
Re: Quarantine boring
by
micro4lpha
on 25/03/2020, 23:59:40 UTC
⭐ Merited by Quickseller (1)
Buy a course in Udemy.com an learn a new skill, programming language or something you think will be useful for yourself in the future.
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Topic
Board Development & Technical Discussion
Re: Bitcoin Core Linux binaries installation question
by
micro4lpha
on 09/01/2020, 03:01:54 UTC
The proper way to install it is to extract everything and copy all of the files into their respective directories in /usr/ So everything in bin goes to /usr/bin; include to /usr/include; lib to /usr/lib; share to /usr/share
It is recommended to use /usr/local/bin if the binaries were compiled by you to not mix them with system binaries in /usr/bin, just a recommendation though.
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Topic
Board Development & Technical Discussion
Re: Bitcoin Full Node Security Practices? (DevOps)
by
micro4lpha
on 09/01/2020, 02:50:43 UTC
bitcoind: Runs under its own user

This makes it sound like you'll be running multiple daemons on the one server, relying only on the file permissions to deny or grant access? You really should be completely isolating each separate coin, so that a compromise of one wallet won't affect the others on the server.

I don't know about Linux containerization, but under FreeBSD you can use 'jail' to run an extreme chroot: only the coin client and a couple of required libraries (as well as the application data) are visible to the process. This means that a compromised coin client can't open a shell (no /bin/sh), can't recompile anything (no cc), and can't start any kind of remote access daemon such as ftpd or nc. Lock each one up tight.

Each coin runs on its own server with its own security measures (ports, user, rpc info, allowedips, etc). The idea is if in the worst case scenario someone is able to get into one of the servers they won't be able to do anything with the others. We're using VPN/tunneling to our servers as they are under a private subnet so you must have explicit access within our office to access the servers.

We will be having a hot wallet (which would be the server) for smaller amounts as well as cold wallet (offline storage) for larger amounts.

The non-stop sequence of micro-architectural side channels on intel-- plus a moderate number on other vendors makes me pretty skeptical of having private keys on anything that isn't physically isolated.

Private keys will be stored in Amazon KMS with CloudHSM to encrypt/decrypt, a little expensive but well worth the security.
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Topic
Board Development & Technical Discussion
Re: Bitcoin Full Node Security Practices? (DevOps)
by
micro4lpha
on 21/12/2019, 03:55:44 UTC
gmaxwell thank you very much for your input! You have very good points that I will be looking into more detail. One thing we have been looking at is Bitbox security architecture, they did a public presentation were they exposed that one of the best security ideas is to consider every form of attack as if the attacker is already in the system, as you put it in one of your examples. As for the advice forum advice, we are definitely having a big security company go through our software and do some security tests as well as provide advice. I do find it helpful to get advice from people who are directly involved in blockchain and coin development projects through this forum.
Post
Topic
Board Speculation
Re: Bitcoin support levels
by
micro4lpha
on 18/12/2019, 05:29:29 UTC
I'm hoping it does go below $5000. It just seems like the time to sell as it's Christmas and people just want to spend, lol. Just my guess.
Post
Topic
Board Development & Technical Discussion
Re: Bitcoin Full Node Security Practices? (DevOps)
by
micro4lpha
on 16/12/2019, 21:08:07 UTC
Debian is slower to release updates as they make sure they are using binaries which are very well tested and therefore avoid as much as possible security issues, etc.
Post
Topic
Board Economics
Re: Don't spend bitcoin. Not now.
by
micro4lpha
on 10/12/2019, 06:08:52 UTC
This sounds like something that should had been written in 2010.

Can't put it any better. I first started investing in Bitcoin 6 years back. I guess I was a bit late and when I purchased my coins, the exchange rate was around $600 per coin. So right now I'm on top of unrealized profits of ~1,200%. This is a lot more than what I could expect from investments in stocks or real estate. But those who made their investments two years earlier than I did are now in 500x to 1,000x profit. But I don't want to get too greedy. Now I am planning to sell some 20% to 30% of my coins in the next 12 months.

Sounds like you are planning smart. I can't stop thinking that right now is still a good time to hold and buy more Bitcoin when possible for a few future highs which could be close to those in the past. Nobody really knows I guess.
Post
Topic
Board Development & Technical Discussion
Merits 2 from 2 users
Topic OP
Bitcoin Full Node Security Practices? (DevOps)
by
micro4lpha
on 09/12/2019, 17:31:36 UTC
⭐ Merited by Welsh (1) ,F2b (1)
I need to run several coin nodes (Bitcoin, Bitcoin Cash, Ethereum, Dash, Tether, etc.) on the cloud. These nodes will all have full transaction indexes in order to view transactions and create/verify our own. I understand each node stores its wallet if you want it to, in this case we will, as we are creating an exchange. I wanted to know from others experience, what are the best security practices to avoid transfer of funds, etc.

Currently I create the server, per default everything is blocked in our firewall so I open port 22 (with specific IP access only) for SSH and 8333 for other peers to connect. Some people suggest using Bastion Hosts and others don't (see: https://medium.com/@henriksylvesterpedersen/you-dont-need-that-bastion-host-cd1b1717a9e7) in order to make it harder to access the server. I do make sure our config file uses hashed password with provided rpcauth.py in sources. What else would you take a look at to make sure the node is as secure as possible?

OS: Debian 9 Stretch
Ports: 22 (IP-bound), 8333 (all)
bitcoind: Runs under its own user
RPC pass: Hashed
RPC allow from: Specific IP
Post
Topic
Board Español (Spanish)
Re: Nos acercamos al hard fork de Ethereum
by
micro4lpha
on 09/12/2019, 02:02:19 UTC
Suena muy interesante. HTC con Binance ya sacaron un celular con un hardware wallet que te permite guardar todo el blockchain en un microSD y funcionar como un nodo (no me quiero imaginar el uso de ancho de banda).

¿Será que baja o sube el precio de Ethereum según su especulación?