Az első blokklánc kódom.

bcp.py

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+#!/usr/bin/python3
+import hashlib
+import random
+import secrets
+import os.path
+
+# Az egyszeruseg kedveert, 1 tomb = 1 sor
+
+# Eredet tomb letrehozasa ha nem letezik
+if not os.path.exists("blokklanc.pp"):
+    # Genezis/eredet tomb letrehozasa randommal, hogy ha ugyan az is ket szoveg, soha ne ugyan az legyen a kimenetel
+    eredet = "Eredet."
+    erand = secrets.token_hex(64)
+    etomb_adat = eredet + erand
+    etomb_hash = hashlib.sha512(etomb_adat.encode('utf-8')).hexdigest()
+    print("Eredet tömb: " + str(etomb_adat) + '||' + etomb_hash)
+    # beirni eredetet
+    f = open('blokklanc.pp','w')
+    f.write(str(etomb_adat) + etomb_hash)
+    f.close()
+
+
+# kiolvassa az utolso sort
+def utolso_sor():
+    blokk_file = open('blokklanc.pp','r')
+    for sor in blokk_file:
+        fb_sor = sor
+    print("Utolsó tömb: " + fb_sor)
+    return fb_sor
+
+# hozzaad egy uj tombot
+def uj_tomb(tomb_adat):
+    utolso_tomb_hash = utolso_sor()
+    uj_tomb = hashlib.sha512(utolso_tomb_hash.encode('utf-8')).hexdigest() + '||' + tomb_adat + '||'
+    uj_tomb_hash = hashlib.sha512(uj_tomb.encode('utf-8')).hexdigest()
+    fu = open('blokklanc.pp','a')
+    fu.write('\n' + uj_tomb + uj_tomb_hash)
+
+# ujraszamolja a blokklanc helyesseget
+def teljes_lanc_ellenorzes():
+    pass
+teljes_lanc_ellenorzes()
+
+
+# Kovetkezo letrehozasa
+jegyzet = input()
+uj_tomb(jegyzet)
+#print("Teszt: " + hashlib.sha512("teszt".encode('utf-8')).hexdigest())
+
+# cut -d '|' -f 3 blokklanc.pp | egrep -v "^Eredet."

blokklanc.pp

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+Eredet.15c6cd96136e173c8e060629ba780b5287523004fcbd144ebf8acbe427170dd2c0b1f5838a336e93d28f741bf9b1976140bd4ae64257fa823060f0392e453bd03ebe6a34949d07877fef62bcfbfa9d23afaccbec655134b83ad1a3e6f42fc5871f29ae8b74175982cb1a77a43d7f0f96b349ab92f99a995e956907329aeed496
+8591471a4f7638c9fdc719b27f1bf53b4b6117a090f5ebf4faa1d66b34c4c21440dd3c21d42673fc1319bada07ef9f43ad20754e2d708b913becf3c4d8e96761||Ethereum whitepapert elolvastam, 2018.12.14.||dc8ab93563dd51fd1c91cb8795a82dc122feedbc9a64e71f23206e3917d3ab5411f3168b11a90f54f4e8c670f9bd8b66e21bdb4d26e15e2359437fb0a27f6c19
+625a8b5e339c41bdce708dda3dff62e22836b3775eb8e46f5614087fa35ffc4711d16c1e3c36a59a62bc3f19ea6f3af95f36afa042abdda34afb60f36cf45971||Letrehoztam az elso sajat blokklanc kodomat. Most ebbe a blokklancba jegyzetelek. 2018.12.14.||9d8028c7ed47a164088d1a9c67d5133de1fee71efc46632a93fedc44f00460089299cf6731ea9c6f7eb3ea770652f9aec05373669da3f90faa566e3ff52c4944

csekk.py

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+#!/usr/bin/python3
+
+import hashlib
+csekk = input()
+print("Teszteredmeny: " + hashlib.sha512(csekk.encode('utf-8')).hexdigest())

secrets.py

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+"""Generate cryptographically strong pseudo-random numbers suitable for
+managing secrets such as account authentication, tokens, and similar.
+
+See PEP 506 for more information.
+https://www.python.org/dev/peps/pep-0506/
+
+Amit nem hasznalok belole azt kivettem!
+Eredeti forras: https://raw.githubusercontent.com/python/cpython/3.7/Lib/secrets.py
+
+"""
+
+__all__ = ['choice', 'randbelow', 'randbits', 'SystemRandom',
+           'token_bytes', 'token_hex', 'token_urlsafe',
+           'compare_digest',
+           ]
+
+
+import base64
+import binascii
+import os
+
+from hmac import compare_digest
+from random import SystemRandom
+
+_sysrand = SystemRandom()
+
+randbits = _sysrand.getrandbits
+choice = _sysrand.choice
+
+DEFAULT_ENTROPY = 64  # number of bytes to return by default
+
+def token_bytes(nbytes=None):
+    """Return a random byte string containing *nbytes* bytes.
+    >>> token_bytes(16)  #doctest:+SKIP
+    b'\\xebr\\x17D*t\\xae\\xd4\\xe3S\\xb6\\xe2\\xebP1\\x8b'"""
+    if nbytes is None:
+        nbytes = DEFAULT_ENTROPY
+    return os.urandom(nbytes)
+
+
+def token_hex(nbytes=None):
+    """Return a random text string, in hexadecimal.
+    >>> token_hex(16)  #doctest:+SKIP
+    'f9bf78b9a18ce6d46a0cd2b0b86df9da'"""
+    return binascii.hexlify(token_bytes(nbytes)).decode('ascii')
+