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Local / Servicios / Busco un programador en SOLIDITY que resida en Ecuador
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on: December 08, 2018, 01:46:51 AM
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Estoy en la búsqueda de un programador que sepa SOLIDITY en nivel avanzado para generar un contrato y enlazarlo a firmas electrónicas, los interesados por favor publicar en este hilo su interés y experiencia.
El pago será en USD o BTC y llevado a cabo por proyecto y/o por horas de programación en base a crono-grama pactado.
Es indispensable que resida en Ecuador
Saludos
Daniel
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Local / Trading y especulación / Vender o esperar
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on: December 07, 2018, 06:04:49 PM
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Me gustaría conversar respecto a que opinan las personas sobre:
A) Vender tus monedas y recuperar algo de liquides. B) Esperar a que se recupere el mercado.
Entiendo que cada caso será diferente debido a la economía personal de cada miembro. Algunos quizás invirtieron ahorros personales, quizás otros pidieron prestamos.
En mi caso, espero comprar más monedas una vez llegue al fondo el precio del BTC y con ello diversificar mi portafolio aun más en altcoins, pero debo decir que todo el dinero que he invertido en cryptos ha sido dinero que me puedo permitir invertir a largo plazo sin preocuparme por pagar deudas a corto plazo con ello.
Cual es tu caso y opinión
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Local / Español (Spanish) / El precio cae y el tamaño de la red tambien
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on: December 05, 2018, 02:17:17 AM
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Es evidente que sucedería pero nadie esperaba que fuera tan drástico, mineros alrededor del mundo se están apagando por que no generan ganancias, toda vez que el BTC baja de precio. Hay que entender que el código de BTC esta diseñado para ajustarse a estos cambios disminuyendo la dificultad de cada problema matemático a resolver cada vez que la red se hace pequeña y aumenta su dificultad cada vez que la red es más grande. Sin embargo en mi opinión personal, si el precio sigue bajando y los mineros (granjas de minería) se siguen apagando considero habrían efectos colaterales, entre ellos la velocidad de transacción de cada operación pudiera incrementar a más de 10 minutos. Como punto positivo, se podría realmente devolver el poder de des-centralización a la moneda ya que no se podrán costear costos de minado de muchas granjas y esto volverá a ser minado de forma casera, sin embargo no todos tenemos un ASIC en casa, y la mayoría de personas mina con GPU (altocoins) (minar BTC con GPU no es rentable, ni lógico) Habrá que ver hasta cuanto baja el BTC y su dificultad de minado para tomar decisiones de compra de equipos Les dejo estos dos links que confirman el tema https://www.coinwarz.com/difficulty-charts/bitcoin-difficulty-charthttps://www.ccn.com/bitcoin-mining-difficulty-just-saw-its-second-largest-drop-in-history/amp/
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Local / Esquina Libre / Encuesta de ubicación geografía de cripto – entusiastas de habla hispana
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on: November 19, 2018, 09:57:00 PM
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Creo que es importante saber en este foro cuantos somos y de que países somos, para compartir mejor la información y organizarnos, el otro día leí en el foro que somos muy pocos y no lo creo la verdad. Me rehusó a creerlo.
Con estos datos planeo hacer una nueva encuesta sobre nivel de conocimiento de criptos por país y región y de ahí incentivar a todos a escribir artículos en base a esos datos.
La encuesta va a quedar abierta y sus resultados solo podrán ser consultados una vez que votes, solo se puede votar una vez.
Saludos a todos y gracias por su participación.
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Bitcoin / Bitcoin Discussion / Advice in convert Bitcoin to USD (from a crypto-exchange to US Bank account)
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on: May 29, 2018, 12:19:40 AM
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Hi guys, I was wondering how to convert amounts over 1.000.000 USD in bitcoins to a bank account in US dollars in the US, basically I have this question.
1.- Which exchanges are legal in the US to do this transaction, so when the transfer is done, I will not have problems with the local bank. 2.- With which banks these exchanges are friendlier to work. 3.- How do I declare this income to tax authorities. 4.- Is there any further paper work to declare for this transaction in the US.
Please I hope you can answer my specific questions, and do not have comments like why you are selling the bitcoins, nor things like, if you have that number of bitcoins you should alredy know, in fact I do not know, that is the reason why I am asking this.
In few days I am going to sign an exclusivity contract to represent a client in the sale of 5 solar power plants located in South America that are already operating and generating incomes, and we want to explore the possibility to sell them in bitcoins, but my client want some part of the deal has to be deposit in US dollars in the United States, this is the reason why I come to you with this questions.
Hope someone can help me and give some guidance
Regards Daniel Roman
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Bitcoin / Bitcoin Discussion / Dutch High School Students have to answer these 5 BTC questions to pass a exam
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on: May 23, 2018, 02:17:56 AM
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In a Dutch High School, students received classes about Bitcoin, and have to answered some hard questions. Some crypto enthusiast does not know how to answer, here are the link to the news, https://coinidol.com/exam-on-bitcoin-math/, and I will quote the questions and the answers from this link https://www.reddit.com/r/CryptoCurrency/comments/8jd9hu/this_is_fucking_awesome_hahahaha_about_200k_dutch/dyz54ni/ Take the test and see you answer The question is as follows, don't mind my subpar translating skills. Bitcoin is a digital currency that only exists online. It has existed since January 1st 2009 and can be used as payment method in webstores and for other online services. Bitcoin is not, like standard money, made by a central bank. Instead, all bitcoin that exist are created by having computers participate in solving specific mathematical problems. This works as follows: everyone can run special software on his or her computer that participates in solving such a mathematical problem. The owner of the computer that solves the problem receives 25 (newly created) bitcoin as a reward. Because it was the case that in 2014 such a problem is solved every 10 minutes, 25 new bitcoins were created every 10 minutes. On January 1st there were (approximately) 12.2 million bitcoin. Question A: Assuming the above, calculate in what year the amount of bitcoin exceeded 18 million, given that the speed at which they are introduced does not change.
Solution: Each day there are 60 / 10 * 24 * 25 = 3600 bitcoin to be earned. Given that there is 18-12.2 = 5.8 million bitcoin left to be earned, that's 5.8 * 106 /3600 = 1611 days, bringing us from 2014 to 2018. In reality the rate at which bitcoin are introduced does not stay equal to 25 bitcoins every 10 minutes. This rate reduces. During the first four years, from January 2009 to January 2013, the reward was equal to 50 bitcoin. The reward gets reduced by half every four years: from January 1st 2013 to January 1st 2017 the reward is 25 bitcoin, for the next four years it is 12.5, and so forth. Question B: calculate from which year on the reward will be less than one bitcoin. Solution: the amount of bitcoin y given as a reward is given by y = 50 * 0.5x where x is the amount of 4 year periods that have passed since January 1st 2009 (the first period is given by x = 0). So we need to solve 50 * 0.5x = 1. In Mathematics A you're allowed to solve this directly with your calculator, else just divide by 50 and take the log. This gives that x = 5.6, so it will be after 6 periods. 6*4 + 2009 = 2033. The total amount of bitcoin that can be put into circulation is limited. This is partially due to the reward halving every four years. The amount of bitcoin that is currently in circulation can be approximated by the following equation: C = 21 - 21 * 0.50.25*t Here C is the amount of bitcoin in millions and t equals the amount of years with January first 2009 given by t = 0. Question C: Determine the maximal amount of bitcoin that can be in circulation based on the above equation based on reasoning.Solution: 0.50.25*t goes to 0 for large t, so that C = 21 - 21*0 for large t. The limit is therefore 21 million bitcoin. To regulate the total amount of bitcoin in circulation, not only the number of bitcoin rewarded per solution is reduced, but the difficulty of the mathematical problems being solved is also increased. That is because more and more people use their computer to solve the problems. The difficulty of the problems being solved scales exponentially according to the equation D = 3.65 * e0.533t Here D is the difficulty of solving the problem and t is the time in months, with T = 0 on January 1st 2013. Larger D implies that the problem is harder to solve. Question D: Write down the equation for the derivative of D and argue that D is an increasing function, that increases by an increasing rate.Solution: The derivative is 0.533 * 3.65 * e0.533t by virtue of how the derivative of ex works plus the so called chain rule; if f(x) = ex then f'(x) is ex, and if g(x) = eh(x) then g'(x) = h'(x)eh(x). Now, e^(0.533t) is > 1 for t > 0 so the derivative is positive and D is an increasing function, and e0.533*t2 > e0.533*t1 for t2 > t1 > 0 so that the derivative grows with time, leading to an increasing rate at which D increases. The above formula for D can be rewritten in such a way that you can find the amount of months needed to reach a specific D. Question E: Rewrite the above equation for D in such a way.Solution: D = 3.65 * e0.533t, taking the log (= base e logarithm, they call it ln in Dutch high school math but I dont believe this is universally true) on both sides we get that log(D) = Log(3.65e0.533t) = Log(3.65) + Log(e0.533t) = Log(3.65) + 0.533tLog(e) = Log(3.65) + 0.533t so that we can write down that t = Log(D/3.65)/0.533 using the rules of the Log function (Log(xy) = Log(x) + Log(y), Log(xy) = ylog(x))
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Local / Español (Spanish) / Por que entraste en las criptomonedas
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on: May 12, 2018, 06:11:48 AM
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Me gustaría discutir por que se decide uno entrar de lleno en el mundo de las criptomonedas, en mi caso debo decir que entre de manera tardía pese a saber de la BITCOIN desde el día de su lanzamiento ¿me preguntaras si me arrepiento? De hecho ese arrepentimiento fue lo que me hizo convertirme en un creyente y seguidor, pese al escepticismo inicial que tuve desde la primera vez que escuche hablar de ella.
Cronológicamente se podría decir que mi experiencia fue así:
Primero que nada debo decir que el día que se pago según la leyenda 10.000 BTC por la compra de dos pizzas en NY, lo vi en CNN y me dije que esto no tendría mucho futuro, ya que gran parte del dinero se usaría para comprar cosas en la deep web y no le di mucha importancia y tampoco apoye el proyecto por ética y moralidad. Mi primer error fue no enterarme del proyecto y sus fundamentos en los cuales se basa y mas que nada el porque fue creado.
Sin embargo varios años después volví a escuchar de las BTC, por que un grupo de amigos inversores me preguntaron del tema y les comente que no se metan en eso ya que a mi parecer apoyarían un proyecto que se usaba para lavar dinero y de hecho sin hacer mucha investigación se los demostré, entre con ellos a la Deep web en vivo y en directo con ellos, cosa que debo aclarar no acostumbro hacer pero debido a mis conocimientos en cyber seguridad se como hacerlo y se que muchos también sabrán como hacerlo, y les indique sin mucho dificultad que se podría contratar hasta un hitman "asesino a sueldo" que aceptaba Bitcoins entre mil barbaridades mas y que no les aconsejaba meternos en eso. Esta claro que muchos de ellos me han pedido la dirección de dicho hitman para ponerme como candidato cuando llego las BTC a los 18.000 USD. Debo ser honesto al decir que ni en mi sueño mas loco hubiera pensado que las BTC superarian los 1000 USD y desde entonces las sigo o como diría mi mejor amigo soy todo un creyente.
Mi principal lección fue que debo leer todo acerca de un proyecto de criptomonedas y aprender a arriesgar un poco, ademas de desarrollar mucha inteligencia emocional para no vender tus monedas a la primera bajada de precio, y esperar lo que mas puedas con ellas, siempre y cuando no pierdas tus palabras y claves de recuperación, cosa que suele pasar muy a menudo.
me gustaría leer y comentar acerca de sus historias, acerca de ¿Por que entraste en las criptomonedas?
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Bitcoin / Project Development / Recommendations in launching a Solar energy Initial Coin Ofering
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on: March 01, 2018, 05:33:46 PM
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Recommendations in launching a Solar energy Initial Coin Ofering
Hello users of bitcointalk, my team and I are planning to create an ICO related to solar energy, I would be glad to receive ideas outside the box for the crowdfunding.
I am a CEO of different projects that runs with FIAT currency so please do not try to tell me something I already know. I am here to hear like I said IDEAS OUTSIDE THE BOX, those that qualify will get merit and if the idea or advise is very good you will be invited to be part of the team.
The project consists in buy 12 solar plants that are already running and generating incomes in different countries. I have a LOI (letter of intent) already signed with the company that want to sell them. You may ask why them want to sell? Simple, the core business of this company it to built the solar plants and then sell them. They are located in North, central and south America.
If we get to exceed the soft cap require for the acquisition of the solar plants, with the money we will construct new ones. We can buy as many as we can pay.
So, please I would be glad to give merit to your IDEAS OUTSIDE THE BOX to raise the money very fast in an ICO launching.
And yes we will accept bitcoin
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Alternate cryptocurrencies / Announcements (Altcoins) / Recommendations in launching a Solar energy Initial Coin Ofering
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on: March 01, 2018, 02:52:03 AM
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Recommendations in launching a Solar energy Initial Coin Ofering
Hello users of bitcointalk, my team and I are planning to create an ICO related to solar energy, I would be glad to receive ideas outside the box.
I am a CEO of different projects that runs with FIAT currency so please do not try to tell me something I already know. I am here to hear like I said IDEAS OUTSIDE THE BOX, those that qualify will get merit and if the idea or advise is very good you will be invited to be part of the team.
The project consists in buy 12 solar plants that are already running and generating incomes in different countries. I have a LOI (letter of intent) already signed with the company that want to sell them. You may ask why them want to sell? Simple, the core business of this company it to built the solar plants and then sell them. They are located in North, central and south America.
If we get to exceed the soft cap require for the acquisition of the solar plants, with the money we will construct new ones. We can buy as many as we can pay.
So, please I would be glad to give merit to your IDEAS OUTSIDE THE BOX to raise the money very fast in an ICO launching.
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