Crypto / Block chain Blogpost or Guest post

Hello friends,

We are looking for more than 50 websites in the niche of the Crypto / Block chain.

DA – 25+

Please, contact me if you have more than 5 websites in this niche.

Do not send a mixed list or a list of unrelated sites.

Payment – BTC / ETH

Telegram identification – @Prcontractor

What are the sources to learn the block chain? – Other opportunities to earn money

First, I will recommend the Blockchain forums. As one of the best sources of blockchain learning. It has a large community that discusses blockchain, bitcoin, altcoin, cryptocurrency and ICO. And also, a news section that always shows updates about them. Here you will find several tips and tutorials that are very useful to learn the help and support related to blockchain and blockchain. Their motto is "With great knowledge you get great profits. Get more information in the Blockchain forums".

Positive recurrence of the finite state of the continuous space of the Markov chain.

Given a continuous irreducible Markov chain X in a finite state space with a Q of Q, how can we prove that it is positive recurrent? This could only be found for the DMCs.

I know that finite state space implies no explosiveness, but we also need an invariable distribution, to conclude that it is positive recurrent (looking at Norris Theorem 3.5.3). It is easy to see that as the rows of Q are added to 0, it has nullity other than zero and, therefore, a solution for vQ = 0. But we must also show that the components of v are not negative.

Thank you.

probability or statistics – Fit Markov Chain

Assume a simple Markov chain with the transition matrix.

n = 9;
matrix = table[Piecewise[{{-c[i], Y[i == j, i < n]}, {c[i], i + 1 == j}, {0, True}}], {i, n}, {j, n}];
matrix // MatrixForm

enter the description of the image here

and the starting point

ini[start_] : = Table[If[i == start, 1, 0], {i, n}];

Does it look like this

P[ini_] : = ContinuousMarkovProcess[ini, matrix];

enter the description of the image here

Now we execute this Markov chain repeatedly for random times, starting in random stages.

values ​​= table[do[c[do[c[i] -> 10 + Mod[i, 3], {In 1}];
simulation[start_, t_] : = Normal[RandomFunction[P[ini[start]]/. values, {0, t}]][[1, -1, 2]];
run = 100;
dat = table[ Module[{start = RandomInteger[{1, 3}], t = RandomReal[{.1, .4}]}, {t, {start, simulation[start, t]}}], careers];

For each data point, the first element is the time of the simulation and the second elements are the initial and final stages.

dat[[1 ;; 5]]{{0.22866, {2, 5}}, {0.252981, {2, 4}}, {0.291232, {2, 6}}, {0.370085, {1, 6}}, {0.103945, {1, 2}} }

Is there an efficient way to adjust the parameters c[i] to this data?

How to chain the blocks protects against altering data?

I am confused with the chaining of blocks, since I know that a block header contains a reference to the previous block header hash with the merkle root and other fields. This header hash is related (computed) to the header and does not include the transaction block, so if the header is manipulated, the string will fail. I understood that, but if you edit the transactions in the block, it will not change the header hash only if the Merkle root is recalculated.

My question is when a node receives a block, how does it verify it (simply redoing the header, or recalculating the Merkle root first and then reloading the header)?

Obsolete java chain in IDE IntelliJ

I accidentally disapproved Java.lang.String a long time ago.
Now I do not know how to permanently delete it, the following only worked temporarily:
File-> Invalidate caches / restart
The next day, java.lang.String is deprecated again.

Please, guide me on how to make it not permanently in disuse,
Thank you!

Blockcjain Transaction transfer delay while it is ready confirmed in the block chain

enter the description of the image here

As you can see … I made a transaction of this specific address from my blockchai. Wallet
But until now I still received this finding, while in the history of blockchain the transaction is ready to be confirmed.

What taxi do I do to get my money back in my blockchain wallet?
Is it possible to cancel this transfer transaction so that my money can be returned?

Please .. Nees a help.

How does the chain of blocks detect a cheater, who manipulates the chain of blocks?

Suppose we have 100 blocks. A miner x intends to manipulate block 90. ​​Therefore, he has to recalculate the hash for block 90. ​​Next, he also has to recalculate the hashes for block 91-100.
Correct me, if I'm talking nonsense here.

So, how do all the other miners realize that the miner x is cheating? And what about the miner x, if they catch him?

c # – (local variable) int PlaceNumberValue Error: Unable to convert the type & # 39; int & # 39; in & # 39; chain & # 39;

Good evening I leave you this little error I can not convert the variable & # 39; PlaceNumberValue & # 39; From string to integer here is the code:

using the system;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace TrackerLibrary
/// Represent what the prize if for the given place.
public class PrizeModel
/// The unique identifier for the prize.
Public ID int {get; set; }
/// The numerical identifier for the place (for the second place, etc.)
public int PlaceNumber {get; set; }
/// The descriptive name of the place (second place, first finalist, etc.)

                public string PlaceName {get; set; }

    /// The amount of finding that this place wins or zero if it is not used.

    public decimal PrizeAmount {get; set; }
    /// The number that represents the percentage of the shot in general or
/// zero if not used. The percentage if a fraction of 1 (then O.S for
/// fifty%)

    public PrizePercentage double {get; set; }

Public PrizeModel ()


Public PrizeModel (string placeName, string placeNumber, string placeAmount, string placePercentage)
PlaceName = PlaceName;
int placeNumberValue = 0;
int.TryParse (placeNumber, out placeNumberValue);
placeNumber = placeNumberValue; // HERE IS THE ERROR

decimal PrizeAmountValue = 0;
decimal.TryParse (prizeAmount, out prizeAmountValue);
PrizeAmount = prizeAmountValue;

public string PrizeAmount {get; set; }


python: how do you print the location of a certain character in a chain?

I want to make an alarm clock that alarms the user when the time of his chosen alarm has passed. Here is my script so far:

import date and time
currentDT = ()

print ("Time is", currentDT.hour, ":", currentDT.minute, ", on",
(currentDT.strftime ("% a,% d% b,% Y")), ". sep," = ")
timer = input ("What time do you want to be alarmed? (24-hour clock,
please ")

for i in (":"):
placement_of_colon = i
print ("", yo, "")

However, it prints only the colon. How do you do it to print the location of the colon as a number? This is what I mean:

asXyk (where x is the desired character)
Expected output = 3

Can you make the script as simple as possible, because I'm very new to Python and joined the community yesterday?