File size: 1,073 Bytes
df6cf36 d8d73d9 df6cf36 d8d73d9 df6cf36 d8d73d9 df6cf36 d8d73d9 df6cf36 d8d73d9 df6cf36 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 | import json
import os
class VitalisLedger:
def __init__(self, path="data/ledger.json"):
self.path = path
os.makedirs(os.path.dirname(self.path), exist_ok=True)
def get_last_hash(self):
try:
if not os.path.exists(self.path):
return "0" * 64
with open(self.path, "r") as f:
lines = [line.strip() for line in f if line.strip()]
if not lines:
return "0" * 64
return json.loads(lines[-1])["hash"]
except (json.JSONDecodeError, KeyError, Exception):
return "0" * 64
def write_entry(self, action, payload):
prev_hash = self.get_last_hash()
new_hash = str(hash(json.dumps(payload) + prev_hash))
entry = {"action": action, "payload": payload, "hash": new_hash}
with open(self.path, "a") as f:
f.write(json.dumps(entry) + "\n")
def verify_ledger(self):
# Placeholder for integrity check logic
# Returns True if the chain is intact
return True
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