Topic: Searching for OP_return data (Read 387 times)

import requests
import binascii
import json
import logging

logging.basicConfig(level=logging.INFO)

def is_hex(s):
    if isinstance(s, str):
        try:
            int(s, 16)
            return True
        except ValueError:
            return False
    return False

def decode_hex(value):
    try:
        return binascii.unhexlify(value).decode('latin-1', errors='ignore')
    except (binascii.Error, ValueError):
        return value

def search_text_in_block(texts, start_block=0):
    latest_block_url = "https://blockchain.info/latestblock"
    try:
        latest_block_response = requests.get(latest_block_url)
        latest_block_response.raise_for_status()
        latest_block = latest_block_response.json()
        latest_block_height = latest_block['height']
    except requests.RequestException as e:
        logging.error(f"Error fetching latest block: {e}")
        return

    for block_height in range(start_block, latest_block_height + 1):
        logging.info(f"Processing block: {block_height}")
        block_url = f"https://blockchain.info/block-height/{block_height}?format=json"
        try:
            block_response = requests.get(block_url)
            block_response.raise_for_status()
            block_data = block_response.json()
        except requests.RequestException as e:
            logging.error(f"Error fetching block {block_height}: {e}")
            continue

        for block in block_data['blocks']:
            for tx in block['tx']:
                match_found = False
                for key, value in tx.items():
                    if isinstance(value, str):
                        for text in texts:
                            if text.lower() in value.lower():
                                logging.info(f"Found '{text}' in transaction {tx['hash']} in field '{key}' (raw): {value}")
                                match_found = True
                            if is_hex(value) and key != 'hash':
                                decoded_data = decode_hex(value)
                                if text.lower() in decoded_data.lower():
                                    logging.info(f"Found '{text}' in transaction {tx['hash']} in field '{key}' (decoded): {decoded_data}")
                                    match_found = True
                    elif isinstance(value, list):
                        for item in value:
                            if isinstance(item, dict):
                                for sub_key, sub_value in item.items():
                                    if isinstance(sub_value, str):
                                        for text in texts:
                                            if text.lower() in sub_value.lower():
                                                logging.info(f"Found '{text}' in transaction {tx['hash']} in field '{sub_key}' (raw): {sub_value}")
                                                match_found = True
                                            if is_hex(sub_value) and sub_key != 'hash':
                                                decoded_data = decode_hex(sub_value)
                                                if text.lower() in decoded_data.lower():
                                                    logging.info(f"Found '{text}' in transaction {tx['hash']} in field '{sub_key}' (decoded): {decoded_data}")
                                                    match_found = True
                if match_found:
                    decoded_tx = {k: (decode_hex(v) if is_hex(v) and k != 'hash' else v) for k, v in tx.items()}
                    with open(f"{tx['hash']}_decoded.json", "w") as f:
                        json.dump(decoded_tx, f, indent=4)
                    logging.info(f"Transaction {tx['hash']} saved to {tx['hash']}_decoded.json")

search_text_in_block(["Chancellor", "bitcoin", "btc", "free"], start_block=0)

#include "Bitcoin.h"

BlockChain::BlockChain ( QObject* parent ) : QFile ( parent ), blkFile ( START_BLOCK )
{
  QTimer::singleShot ( 0, this, SLOT ( start ( ) ) );
}

void BlockChain::start ( )
{
  setFileName ( blkFileName ( blkFile++ ) );
  if ( ( END_BLOCK >= 0 ) && ( blkFile == END_BLOCK ) )
  {
    _trace ( QString ( "done [%1]" ).arg ( fileName ( ) ) );
    Chainer ( ).block ( QByteArray ( ), blkFile - 1 );
    deleteLater ( );
  }
  else if ( !open ( QIODevice::ReadOnly ) )
  {
    _trace ( QString ( "cant open [%1]" ).arg ( fileName ( ) ) );
    Chainer ( ).block ( QByteArray ( ), blkFile - 1 );
    deleteLater ( );
  }
  else
  {
    _trace ( QString ( "processing [%1] defu=%2/%3 uxto=%4 sum=%5" ).arg ( fileName ( ) )
                 .arg ( DefUnknown ( ).economy ( ) ).arg ( DefUnknown ( ).size ( ) )
                 .arg ( ScriptResolver ( ).size ( ) )
                 .arg ( Util::getAmount ( MyHash ( ).getUxToAmount ( ) ) ) );
    QTimer::singleShot ( 0, this, SLOT ( next ( ) ) );
  }
}

void BlockChain::next ( )
{
  if ( pos ( ) < size ( ) )
  {
    quint32 magic;
    quint32 sz ( read ( (char*)&magic, 4 ) );
    while ( !magic && pos ( ) < size ( ) - 4 )
      read ( (char*)&magic, 4 );
    xassert ( ( ( magic == MAGIC_ID ) || !magic ) && ( sz == 4 ) )
    if ( magic )
    {
      read ( (char*)&sz, 4 );
      Chainer ( ).block ( read ( sz & 0x07FFFFFFFuLL ), blkFile - 1 );
      QTimer::singleShot ( 0, this, SLOT ( next ( ) ) );
      return;
    }
  }
  close ( );
  QTimer::singleShot ( 0, this, SLOT ( start ( ) ) );
}

const QString BlockChain::blkFileName ( const int i ) const
{
  return
    ( i < 10 ) ? QString ( DATA_ROOT "\\blocks\\blk0000%1.dat" ).arg ( i ) :
    ( i < 100 ) ? QString ( DATA_ROOT "\\blocks\\blk000%1.dat" ).arg ( i ) :
    ( i < 1000 ) ? QString ( DATA_ROOT "\\blocks\\blk00%1.dat" ).arg ( i ) :
    QString ( DATA_ROOT "\\blocks\\blk0%1.dat" ).arg ( i );
}