devrandom

---
name: "bitcoin"
suites:
- "lucid"
architectures:
- "i386"
- "amd64"
packages: 
- "libdb4.8++-dev"
- "libxxf86vm-dev"

devrandom

This is obsolete, since Bitcoin Core has moved to a more modern build system.

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#create a 64 bit m1.large instance using ami-08f40561
ssh -i key ubuntu@...
sudo apt-get update
sudo apt-get install python-vm-builder qemu-kvm apt-cacher git-core ruby

# turn it on
sudo vi /etc/default/apt-cacher
sudo service apt-cacher start

sudo chown ubuntu /mnt

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class MultiSigUtils {
    public static void signInput(Transaction tx, int inputIndex, byte[] inputScript, ECKey key) throws AddressFormatException {
        TransactionInput input = tx.getInput(inputIndex);
        Script existingScriptSig = input.getScriptSig();

        int numSigs = Script.decodeFromOpN(inputScript[0]);
        ScriptBuilder builder = new ScriptBuilder();
        Script redeemScript = new Script(inputScript);

        List<ScriptChunk> redeemChunks = redeemScript.getChunks();

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#include <iostream>
#include <vector>

int main ()
{
  std::vector<int> first;
  std::vector<int> second;

  first.assign (7,100);             // 7 ints with a value of 100

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public class HDUtil {
    private static final byte[] xprv = new byte[]{0x04, (byte) 0x88, (byte) 0xAD, (byte) 0xE4};
    private static final byte[] xpub = new byte[]{0x04, (byte) 0x88, (byte) 0xB2, (byte) 0x1E};
    private static final byte[] tprv = new byte[]{0x04, (byte) 0x35, (byte) 0x83, (byte) 0x94};
    private static final byte[] tpub = new byte[]{0x04, (byte) 0x35, (byte) 0x87, (byte) 0xCF};

    public static DeterministicKey parseDeterministicKey(String serialized) throws AddressFormatException {
        byte[] data = Base58.decodeChecked(serialized);

        if (data.length != 78) {

devrandom

Verifying that +devrandom is my openname (Bitcoin username). https://onename.com/devrandom

devrandom

import org.junit.Before
import org.junit.Test
import kotlin.test.fail
import org.bitcoinj.core.Transaction
import org.bitcoinj.params.MainNetParams
import org.bitcoinj.core.NetworkParameters
import org.bitcoinj.core.ECKey
import org.bitcoinj.core.Address
import org.bitcoinj.testing.FakeTxBuilder
import org.bitcoinj.core.Coin

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pragma solidity ^0.4.22;

contract SimpleMultiSig {

  uint public nonce;                 // (only) mutable state
  uint public threshold;             // immutable state
  mapping (address => bool) isOwner; // immutable state
  address[] public ownersArr;        // immutable state

  // Note that owners_ must be strictly increasing, in order to prevent duplicates

devrandom

pragma solidity ^0.4.22;

contract SimpleMultiSig {

  uint public nonce;                 // (only) mutable state
  uint public threshold;             // immutable state
  mapping (address => bool) isOwner; // immutable state
  address[] public ownersArr;        // immutable state

  // Note that owners_ must be strictly increasing, in order to prevent duplicates