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sudo nano /etc/netplan/00-installer-config.yaml


# This file is generated from information provided by
# the datasource.  Changes to it will not persist across an instance.
# To disable cloud-init's network configuration capabilities, write a file
# /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg with the following:
# network: {config: disabled}
network:

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sudo docker create \
  --name=duckdns \
  -e PUID=1000 \
  -e PGID=1000 \
  -e TZ=Europe/Madrid \
  -e SUBDOMAINS=ejemplo1,ejemplo2 \
  -e TOKEN=TOKEN HERE \
  --restart unless-stopped \
  linuxserver/duckdns

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$btc = 0.00005; // amount 
echo  ($btc)*(pow(10, 8));  // bitcoin to satoshi

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$satoshi = 5000; //Satoshi to btc
echo number_format(($satoshi)*(pow(10, -8)), 8, '.', ''); //Returns 0.00005000

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npm i ethereumjs-wallet@0.6.3

var Wallet = require('ethereumjs-wallet');
const EthWallet = Wallet.generate();
console.log("address: " + EthWallet.getAddressString());
console.log("privateKey: " + EthWallet.getPrivateKeyString());

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<?php
// DEFINE our cipher
define('AES_256_CBC', 'aes-256-cbc');

// Generate a 256-bit encryption key
// This should be stored somewhere instead of recreating it each time
$encryption_key = openssl_random_pseudo_bytes(32);

// Generate an initialization vector
// This *MUST* be available for decryption as well

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use BitWasp\Bitcoin\Bitcoin;
use BitWasp\Bitcoin\Key\Factory\PrivateKeyFactory;
use BitWasp\Bitcoin\Script\P2shScript;
use BitWasp\Bitcoin\Script\WitnessScript;
use BitWasp\Bitcoin\Script\ScriptFactory;
use BitWasp\Bitcoin\Transaction\Factory\Signer;
use BitWasp\Bitcoin\Transaction\Factory\TxBuilder;
use BitWasp\Bitcoin\Transaction\OutPoint;
use BitWasp\Bitcoin\Transaction\TransactionOutput;
use BitWasp\Buffertools\Buffer;

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<?php

// This can be found in the Symfony\Component\HttpFoundation\Response class

const HTTP_CONTINUE = 100;
const HTTP_SWITCHING_PROTOCOLS = 101;
const HTTP_PROCESSING = 102;            // RFC2518
const HTTP_OK = 200;
const HTTP_CREATED = 201;
const HTTP_ACCEPTED = 202;

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const TronWeb = require('tronweb');
const HttpProvider = TronWeb.providers.HttpProvider;
const fullNode = new HttpProvider("https://api.trongrid.io");
// const fullNode = new HttpProvider("http://192.168.1.162:8090");
const solidityNode = new HttpProvider("https://api.trongrid.io");
const eventServer = new HttpProvider("https://api.trongrid.io");
const privateKey = "3481E79956D4BD95F358AC96D151C976392FC4E3FC132F78A847906DE588C145";
const tronWeb = new TronWeb(fullNode, solidityNode, eventServer, privateKey);

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Route::get('/storage/uploads/{filename}', function ($filename)
{
    $path = storage_path('app/public/uploads/images/' .'/'. $filename);

    if (!File::exists($path)) {
    $path = storage_path('app/public/uploads/' . 'NoImg.jpeg');
    }
     return Image::make($path)->response();