Bitcoin Forum
April 27, 2024, 04:53:14 PM *
News: Latest Bitcoin Core release: 27.0 [Torrent]
 
  Home Help Search Login Register More  
  Show Posts
Pages: « 1 2 3 4 5 6 7 8 9 10 11 12 13 14 [15] 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 »
281  Other / Beginners & Help / Re: Help this time with a personal situation on: October 21, 2023, 03:24:53 AM
Youtube or tiktok videos can get you more than that if you know how to attract viewers

You don't get the point that most Commercial activities from others countries are banned in cuba right?

https://en.wikipedia.org/wiki/United_States_embargo_against_Cuba

The point is that he can't monetize that kind of content just because no bank is enabled to do that kind of business in Cuba.

My recommendation for OP is that once he is able to receive some coins in any cryptocurrency, he may teach others to receive and send those coins just to encourage local commerce without intermediates.

When you struggle to get 2 USD or even 1 USD per day Bitcoin becomes an expensive coin on matter of fees if you try to use it for Daily basic expenses.

for example: right now there is 3sat/vB



When you are trying to save money even those fees may kill your savings, So my recommendations is maybe get payments in some stablecoin and when OP have the opportunity to save some for long time then choose bitcoin for that
282  Local / Español (Spanish) / Re: GPG Tutorial express en español on: October 20, 2023, 11:16:00 PM
Reservado
283  Local / Español (Spanish) / GPG Tutorial express en español on: October 20, 2023, 11:15:19 PM
Muy buen dia dejare aqui una guia express para utilizar GPG, Aqui doy por entendido que ya lo tienen instalado en su sistema.

Crear una llave paso por paso:
Code:
gpg --full-gen-key --expert

Con este comando podremos crear una llave paso a paso, personalmente recomiendo una llave ed25519 ya que son llaves pequeñas, seguras para los estandadres modernos y muy rapidas de generar/firmar/cifrar

Para generar una llave ed25519 hay que seleccionar las opciones:

Code:
ECC and ECC

Luego

Code:
Curve 25519

Y el detalle de la expieracion de la key se lo dejo al criterio de cada quien.

NOTA IMPORTANTE, el proceso te va a pedir un password, Trata de que sea un password que recuerdes muy bien y de preferencia tenerlo respaldado, ya que si lo pierdes no habra manera de recuperar tu llave privada.

Listar llaves privadas

Code:
gpg --list-secret-keys

Esta es la llave que recien generamos solo con las llaves que aparecen en esta lista podremos firmar y cifrar documentos


Listar llaves publicas

Code:
gpg --list-keys

Esta es una lista de todas las llaves publicas que estan guardardas, generalmente solo aparece nuestra llave publica, pero si ya hemos importado la llave publica de alguien mas, esta tambien aparecera listada.

Importar llaves publicas de alguien mas

Code:
gpg --import their_public_key.asc

en el archivo their_public_key.asc (Que podria tener cualquier otro nombre) se encuentra la llave publica de otra persona y la podremos importar a nuestra lista para en el futuro poder cifrar mensajes que solo el destinatario pueda leer.

Pudes tratar de impotar mi llave publica, guarda el siguiente texto en un archivo de texto y luego importarlo con el comando anterior:


Mi llave publica es:
Code:
-----BEGIN PGP PUBLIC KEY BLOCK-----
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=GFvH
-----END PGP PUBLIC KEY BLOCK-----

Exportar tu llave publica o la de alguien mas

Code:
gpg --export --armor "Name or Email or KEY ID" > public_key.asc

Con este comando podras exportar tu llave publica o la de alguin mas (Previamente tu ya deberia de haberla importado).

Nota que la salida es redirigida a un archivo de texto public_key.asc.


Firmar un archivo de Texto

Code:
gpg --clearsign --local-user "Name or Email or KEY ID" -o signed_message.txt message.txt

Si quieres firmar un archivo de texto para autenticar que tu lo generaste o demotrar que tu tienes el control de determinada llave privada utiliza el comando anterior.
Al archivo a firmar es menssage.txt y el archivo resultando es signed_message.txt

menssage.txt
Code:
albert0bsd signing a message for bitcointalk post on Oct 7, 2023

signed_message.txt
Code:
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

albert0bsd signing a message for bitcointalk post on Oct 7, 2023
-----BEGIN PGP SIGNATURE-----

iHUEARYIAB0WIQRw/LIXzybENOfK777tRDg+XHUbzgUCZSGILAAKCRDtRDg+XHUb
zhKvAQDLvqt3wEhiIK+P5umf5HJNqgPDchgndg8JRLHWsC5U2QD/fv8FEQZQr75K
68BsHna/htaTBMOnfPOuZGYJzmr4WQE=
=1C8J
-----END PGP SIGNATURE-----

Verificar un mensaje de texto firmado

Code:
gpg --verify signed_message.txt

Puedes verificar mi mensaje firmado o el de alguien mas con el comando anterior

Code:
gpg: Signature made Mon Oct  9 07:46:40 2023 CST
gpg:                using EDDSA key 70FCB217CF26C434E7CAEFBEED44383E5C751BCE
gpg: Good signature from "albertobsd <...>" [unknown]
gpg: WARNING: This key is not certified with a trusted signature!
gpg:          There is no indication that the signature belongs to the owner.
Primary key fingerprint: 70FC B217 CF26 C434 E7CA  EFBE ED44 383E 5C75 1BCE

Haz caso omiso del warning lo que nos interesa es:
Quote
gpg: Signature made Mon Oct  9 07:46:40 2023 CST
gpg:                using EDDSA key 70FCB217CF26C434E7CAEFBEED44383E5C751BCE

Quote
Primary key fingerprint: 70FC B217 CF26 C434 E7CA  EFBE ED44 383E 5C75 1BCE

Si la llave coincide con la llave esperada entonces la persona que firmo el mensaje tiene control sobre la llave privada ligada al mismo.

Cifrar un mensaje para que solo pueda ser visto por un solo destinatario

Code:
gpg --encrypt --recipient "Recipient Name or Email or KEY ID" --armor --local-user "Recipient Name or Email or KEY ID" -o encrypted_message.asc message.txt

El archivo de entrada es message.txt y el de salida es encrypted_message.asc

Aqui pueden cifrar un mensaje para mi y si lo puedo descifrar les mandarare un mensaje para que lo descifren ustedes, si hacen esto solo respondan a este mensaje con el mensaje cifrado, no se olviden de publicar su llave publica tambien, aqui o de preferencia en el siguiente hilo: https://foro.elhacker.net/criptografia/pgpgpg_public_key_database_guarda_tu_llave_publica_aqui-t518947.0.html

Descifrar un mensaje Que te enviaron

Code:
gpg --decrypt encrypted_message.asc

No hay mucho que decir, si tu tienes la llave privada asociada a la llave publica que se utilizo como destinatario del mensaje cifrado, entonces tu seras capas de descifrar el mensaje.

Y por ultimo

Respaldar tu llave privada

Code:
gpg --export-secret-keys "Recipient Name or Email or KEY ID" > backup-key.asc

Es sumamente importante que respaldes tu llave privada en un archivo y este lo copies a una o dos unidades USB, el archivo backup tiene el mismo password que utilizaste la cuando lo creaste, asi que tambien es importante que respaldes este password ya que sin el PERDERAS el acceso a tu llave privada
284  Economy / Reputation / Re: My Telegram @Royse777 is temporarily unavailable, please use @CasinoCritique on: October 20, 2023, 07:49:19 PM
Checking for some of the default values in a telegram account:

It terminates old sessions if those are innactive for 3 monts



I doubt that you want to wait that amount of time:

But another important thing is how long is your  account set to be destroyed?


For fast message telegram is useful but i thinkg that you should keep a second option of comunication with your clients emails is a good one, proton mail can be accesed via TOR and have some good security options.

I hope you can recover the access to your TG account.
285  Bitcoin / Bitcoin Discussion / Re: Bitcoin puzzle transaction ~32 BTC prize to who solves it on: October 20, 2023, 06:19:42 PM
I just added an update to explain my script since it has no commenting and strange variable names.

Hi, Welcome!! It is nice to see more developers in this posts.

You don't need to quote all the previous text just to reply a single line, just quote those parts that are interesting.

BTW as digaran said before puzzle 15 in 1 minute is very slow. But i remember when i start to code for this I also start with such low speed, so as a starting  point that is OK.

Any doubt just ask.

286  Bitcoin / Mining / Re: Improving Bitcoin Protocols against attack on: October 20, 2023, 05:43:46 PM
Interesting i am looking forward to see what you have to say but looks a little impossible to shutdown the bitcoin network, maybe is the same level of difficulty to shutdown the internet? In any case i would like to read you about those weaknesses
287  Bitcoin / Bitcoin Wallet for Android / Re: Bitcoin Wallet for Android stopped synchronizing with the blockchain on: October 20, 2023, 05:30:51 PM
Congrats  Grin

You should try some other wallets to check all other kind of features, like more privacy and coin control, lightning network

For android.
- Samourai wallet
- Electrum

For PC
- Sparrow
- Electrum

In all those you only need your seed: 12 words for electrum or 24 works for BIP39
288  Bitcoin / Bitcoin Discussion / Re: What monetary cone do you like? on: October 20, 2023, 05:07:22 PM
But looking at average TX fee rate in last few months, personally i'd avoid creating UTXO with less than 10K satoshi.

Totally agree with this, any change low than 10k sats need to be send to a different wallet seed with only dust transactions just to be consolitaded after some 100k sats or more

That means, you start from 10 as your base, and split it into 1, 2, and 5.

Yes I also like a lot the 1, 2 and 5 denominations becuase those are the denominations that we use often.

Any "round" amounts are great for savings, but any non-round amounts are great for spending.

Yes that is true Smiley at the end if we need to spend some round input there should not be a problem.
289  Economy / Economics / Re: Isreal and Palestine war and losing your wallet phrase and password on: October 20, 2023, 04:53:19 PM
mnemonics are easy to memorize. I don't see the problem, you can memorize up to 24 words using only 6 sentences, not to say that you only need 3 sentences to memorize a 12 word seed from electrum.

I have also two kind of backup an electronic backup encrypted with GPG and the 24 words written in a way of poem form just to not be too obvious at first sight
290  Other / Beginners & Help / Re: question about using Satoshis to vote on: October 20, 2023, 04:27:17 PM
The best option for this will be The Lightning Network.
291  Local / Español (Spanish) / Re: Password Store - Un administrador de contraseñas de codigo abierto on: October 20, 2023, 04:06:01 PM
Esta herramienta tambien esta para windows dentro del enviroment de WSL (Windows Subsytem Linux). Asi mismo si se sincroniza con un repositorio git descargar tus password en distintos dispositivos.

Por ejemplo yo lo utilizo en:
  • Android (Termux)
  • Linux Debian
  • Windows (WSL)

Al ser una herramienta de linea de comandos se me hace bastante simple y util al mismo tiempo. Les soy honesto prefiero 10 veces una herramienta de linea de comandos a una herramienta grafica. Sin embargo ya es cuestion de gustos no?
292  Other / Meta / Re: My suggestion on how to reduce the spam problem in gambling board, what's yours? on: October 20, 2023, 03:53:31 AM
What about talk with those campaigns managers to request them to pay only to quality post? Just Kidding, but i bet that most of those spam comes from users on signature campaigns related to sport and gambling?
293  Local / Español (Spanish) / Password Store - Un administrador de contraseñas de codigo abierto on: October 19, 2023, 04:22:15 PM
Muy buen días, hoy les quiero compartir una de las que creo es la mejores herramienta para  administrar sus passwords de forma segura.

https://www.passwordstore.org/

Si es que no lo conocen, password store es un proyecto de código abierto escrito en bash.

Este te permite administrar tus contraseñas de forma segura cifradas mediante tu llave privada de GPG (Por lo cual tu y solo tu podras decifrar).

Por lo que básicamente se convierte en una llave para gobernarlas a todas. Lo cual y estoy conciente es un riesgo, pero si ya le confiamos nuestros password y estos están cifrados mediante GPG por que no confiarle otros secretos como llaves privadas o mnemonicos de bitcoin y otras criptomonedas?

GPG es una herramienta que ya tiene su tiempo en la comunidad de Open source: https://es.wikipedia.org/wiki/GNU_Privacy_Guard
Por lo que el tema de seguridad de la misma ya esta bastante depurado.

Temas de seguridad a tener en cuenta.
- Tienes que tener respaldada tu llave privada GPG
- Tienes que tener respaldo tu password de tu llave privada
- Es conveniente tener una máquina y cuenta separada para respaldar seeds con este método (Esto ya depende de cada quien y que tan paranoico sea uno)

En lo personal he dejado de utilizar el gestor de contraseñas de google y he terminado de pasar todos los password a este gestor con mis respectivas precauciones, Llave GPG respaldada offline, Password respaldado.

Muchos tal vez confían en gestores como 1Password y otros, sin embargo estos al ser de código cerrado y con un largo historial de hackeos a empresas similares, Por lo siento Password store es una alternativa más segura que los anteriores.
294  Bitcoin / Project Development / Re: Stacker.news a website where posts are ranked with bitcoin instead of upvotes ! on: October 19, 2023, 01:59:59 PM
But such will be suppressed because someone paid a bust for the content of average quality. It sounds quite centralized for a news portal.

Right it is centralized.

And its running over the lightning network so you can withdraw what you earned immediately to your wallet

This is the only that make some sense, but where those sats comes from in first place?

Do I Need Bitcoin to Use Stacker News?[\b]
No. Every new stacker is able to post and comment for free (with limited visibility) while they stack their first few sats. After a stacker has started receiving zaps for their content, each post and comment requires a small fee to prevent spam and to encourage quality contributions. Many stackers have earned enough sats from their first few posts and comments to continue posting on the site indefinitely without ever depositing their own funds.
Post and comment fees start at 1 sat.

That sound some contradictory first it said "No. Every new stacker is able to post and comment for free (with limited visibility)" then "each post and comment requires a small fee to prevent spam and to encourage quality contributions"

So the users need to pay first to post? and users who want to comment also need to pay ?

No thank you, i still preffer the merit system on this forum. More merit more rank, more rank more payment in signature campaigns, a single quality post here can pay som 3500 sats without payanything for write it.
295  Economy / Lending / Re: Short-Term Loan and I know I’m new but… on: October 19, 2023, 01:24:47 PM
TBH nobody is going to lend money to a new account without any reputation.

You may start toreading  this next topics:

[EDU] EXERCISE CAUTION WHEN LENDING TO USERS!
[EDU] The Rule of "No Collateral, No Loan" - IGNORE AT YOUR OWN RISK!
296  Economy / Exchanges / Re: i need sites or apps to lock my usdt and xrp on: October 19, 2023, 01:12:58 PM
First question, Why?

Is something related about weak willpower?

I think that do this in a CEX is not recomendable even if they offer that option, in the long run most of th CEX will be hacked or over regulated by the goverment.

If i was you i will try just to put then in a cold wallet and store them in some safe and forget about it for some time.
297  Bitcoin / Legal / Re: Basel proposes crypto disclosures by banks from January 2025 on: October 19, 2023, 01:02:42 PM
The simplest conclusion that follows from this is that cryptocurrency is not a scam and it will be used in the future.

Yes that is interesting, this mean that we as users need to keep bitcoin and other alt-coints out of any CEX and Bank. Just to not give them more power
298  Bitcoin / Mining / Re: how unknowns can solve more blocks? on: October 18, 2023, 06:16:34 PM
Well it is actually not rare, maybe some improbable but the odds are still there, it is a lottery a bit one i mean...

For example:



Some miners often solve a empty blocks, it is just luck

If you see the mining process from a simple Hash point of view it is actually and totally random output from the double hash sha256 of th header This header have some fields and the data that most vary there is the Nonce the times stamp and the Merkle tree hash, so if you see it as a random process from output from the double sha256 it is just luck.

Some time ago one guy point me to some Solo-Miner that solve two blocks in less than

Transactions:
https://mempool.space/tx/eebfc1bbec8ba283fd76607d95f5f0f3d957c08863d3643cec6ac9d06c6520f6
https://mempool.space/tx/87edc09d1a7979f7a83ba60154e95907111b18ed26318f84917a32b2e74dc547

He told me a conspiracy theory that the guys broke sha256, I just laught about it.

So if you ask how they can solve more blocks?

Luck
299  Local / Español (Spanish) / Re: Un médico contrata sicario en EEUU, y envía el primer pago a "quién sabe ande" on: October 18, 2023, 04:46:49 PM
Como se puede alquien equivocar al momento de mandar bitcoin?

Solo veo los siguientes escenarios:

Error al escribirla: Poco probable, en teoria la mayoria de los software validan el checksum de la direccion.
Malware copy/paste: Esto se me hace mas probable que tenga un virus/malware que cambien la direccion de destino al momento de copiar pegar.
Otro caso que se me ocurre es algun tipo de scam, donde alguien se coloca un nombre muy similar al orginal y le manda mensaje con una direccion diferente, pero el usuario no se da cuenta del cambio de username o similares.

Interesante historia, una anedota mas al lado oscuro de bitcoin.
300  Bitcoin / Development & Technical Discussion / Re: A WIF generator ... but is it possible to generate faster ?? on: October 17, 2023, 09:21:52 PM
What do you mean with publickeys

The process that is made to generate address from privatekeys is something like that:

Code:
private key --(ECDSA funtions)--> Public key --(Double Hash functions)--> Hash rmd160 --(Base58 Encode)--> Address

The thing that you I told you to cut is the private key part, and the las Base58 Encode to an address.

Private key to Publickey is necessary Only ONCE, but once that you already have the starting public key you can do Public key addition incrementing the public key in One in each cycle (This part is almost 32 times faster)

Also you can remove the last step Base58 Encode Comparing only the RMD160 hash againts other rmd hashes, do to that you need to conver all your target addresses in to hashed (Again this process only ONCE)

So, the process each cycle will look like:

Code:
(Public key addtion) New Public key --(Double Hash functions)--> Hash rmd160

By doing the previous recomendations your program may can run at least x35 times faster.

Please read:  https://www.oreilly.com/library/view/mastering-bitcoin/9781491902639/ch04.html

How to do that on python I really don't know, I only did that in C
Pages: « 1 2 3 4 5 6 7 8 9 10 11 12 13 14 [15] 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 »
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!