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1
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2 # Table of Contents
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3
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4 1. [Installation](#org79ef3e8)
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5 2. [Usage](#org47a2d85)
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6 1. [Example 1 -> Deserialize genesis block](#orgb8ccd7c)
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7 2. [Example 2 -> Deserialize entire blockchain](#org6c651d9)
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8
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9 
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10
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11
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12 <a id="org79ef3e8"></a>
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13
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14 # Installation
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15
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16 Recommended:
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17
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18 pip install bitcaviar-plus
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19
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20 Manual:
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21
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22 python setup.py install
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23
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24
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25 <a id="org47a2d85"></a>
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26
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27 # Usage
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28
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29
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30 <a id="orgb8ccd7c"></a>
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31
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32 ## Example 1 -> Deserialize genesis block
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33
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34 from bitcaviar_plus.block import deserialize_block
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35
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36
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37 def parse_genesis_block():
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38 with open('path/to/file/blk00000.dat', 'rb') as f:
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39 block = deserialize_block(f)
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40 print(block)
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41
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42
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43 <a id="org6c651d9"></a>
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44
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45 ## Example 2 -> Deserialize entire blockchain
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46
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47 import os
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48 from bitcaviar_plus.block import deserialize_block
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49 from bitcaviar_plus.errors import InvalidMagicBytes
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50
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51
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52 def parse_entire_blockchain():
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53 file_counter = -1
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54 while True:
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55 file_counter += 1
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56 file_name = 'path/to/file/blk{}.dat'.format(str(file_counter).zfill(5))
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57 with open(file_name, 'rb') as f:
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58 file_size = os.path.getsize(file_name)
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59 while f.tell() < file_size:
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60 try:
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61 block = deserialize_block(f)
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62 except InvalidMagicBytes as e:
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63 print(e)
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64
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65 Example output:
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66
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67 {
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68 "magic_number":"f9beb4d9",
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69 "size":"0000011d",
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70 "id":"000000000019d6...",
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71 "transaction_count":"01",
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72 "header":{
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73 "version":"00000001",
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74 "previous_block_id":"00000000000000...",
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75 "merkle_root":"4a5e1e4baab89f3a32...",
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76 "time":"495fab29",
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77 "bits":"1d00ffff",
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78 "nonce":"7c2bac1d"
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79 },
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80 "transactions":[
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81 {
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82 "version":"00000001",
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83 "input_count":"01",
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84 "output_count":"01",
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85 "lock_time":"00000000",
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86 "id":"4a5e1e4baab89f3a32518a8...",
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87 "inputs":[
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88 {
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89 "id":"0000000000000000000000...",
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90 "vout":"ffffffff",
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91 "script_sig_size":"4d",
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92 "script_sig":"04ffff001d01044554686520546...",
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93 "sequence":"ffffffff"
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94 }
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95 ],
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96 "outputs":[
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97 {
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98 "value":"000000012a05f200",
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99 "script_pub_key_size":"43",
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100 "script_pub_key":"4104678afdb0fe55482719..."
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101 }
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102 ]
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103 }
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104 ]
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105 }
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106
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