Quote from: alexxino on Today at 09:24:56 AM

Quote from: ihsotas91 on Today at 09:10:07 AM

I realized something strange after some tests.
I have a lot of equipment. All running for searches about these puzzles.

To have fun, I chose to search via vanity in last days.
I have desktops and notebooks with latest and powerful intel chips, nvidia graphics, 120GB DDR5 etc. each. On vanity, these setups find ~20 addresses per day for each.

However, when I applied vanity via apple silicone chips (M1, M2, M3), daily found vanity addresses ~500 per each setup.
I observed the behavior, and when it finds a vanity address in the pool I search, immediately it finds 5-6 addresses more in milliseconds, it is moving to the numbers to check that might have the vanity around some near numbers while I'm generating those numbers using "random".

For example:

^{1MVDYUvrcMqdprCTYuthuaQxWWAL8Ty2KS 220647290646478288674
1MVDYE2EHY3VR3AXKrD7mYvpSgD2SGgqZb 257335783054352585279
1MVDYuE5HGPjYaEH72sZukwNXhdtdKSQRY 280101386265359359876
1MVDYNcMjPsAW1PQgjwCGRNwijJMSW1UcR 274962343828436157207
1MVDYGms9qGRsrDD7AuoyYJBZnJTzAj9B8 213173989571665196391
1MVDYnfq7s3yG8fdnhQ66cqDa4h2DNoGeB 247904416465366500764
1MVDYY8GUU8or4WfLSrsbHip8F7pwA4xpv 243282287509672730681
1MVDYxMNG8fKf9fvX3r5PmwNXY8tjfESsu 245042251007899478320
1MVDY8aYEQsCWqU2MVWRjhrLHaX28SHFky 270190501490895327846}

These are found in the same second and it keeps this behavior.

This behavior made me crazy guys. I do not understand how it can do this.

Do you have a binary to search vanity which runs on Silicon CPUs? I could not find any nor make it work, a lot of libraries are only for intel.
Could you share it ?

It is very simple vanity search written in Python

^{import sqlite3
import random
from bit import Key
import bitcoin

# Connect to btc.db for checking address existence
btc_conn = sqlite3.connect('btc.db')
btc_cursor = btc_conn.cursor()

# Connect to vanity_addresses.db for storing found vanity addresses
vanity_conn = sqlite3.connect('vanity_addresses.db')
vanity_cursor = vanity_conn.cursor()

# Create a table in vanity_addresses.db to store vanity addresses and private keys
vanity_cursor.execute('''
CREATE TABLE IF NOT EXISTS vanity_addresses (
address TEXT PRIMARY KEY,
private_key TEXT
)
''')
vanity_conn.commit()

def existInBtcDb(search_term):
query = 'SELECT EXISTS(SELECT 1 FROM btc WHERE address = ? LIMIT 1)'
btc_cursor.execute(query, (search_term,))

# Fetch the result
exists = btc_cursor.fetchone()[0]

# Return True if exists is 1, else False
return exists == 1

def generate_vanity_address(prefix):
while True:
# Generate a new private key
private_key = random.randint(147573952589676412927, 295147905179352825855)
# Compute the corresponding public key
key = Key.from_int(private_key)
addr = key.address
addr_uncompressed = bitcoin. privkey_to_address(private_key)

if existInBtcDb(addr) or existInBtcDb(addr_uncompressed):
try:
filename = f"found/found_{private_key}.txt"
with open(filename, 'w') as f:
f.write(f'{private_key}, {addr}\n')
except Exception as e:
print(
f'Error while writing to file: {private_key}. Error: {e}')

if addr.startswith(prefix):
# Insert found vanity addresses into the vanity_addresses.db database
vanity_cursor.execute(
'INSERT INTO vanity_addresses (address, private_key) VALUES (?, ?)', (addr, str(private_key)))
vanity_conn.commit()

if addr_uncompressed.startswith(prefix):
# Insert found vanity addresses into the vanity_addresses.db database
vanity_cursor.execute(
'INSERT INTO vanity_addresses (address, private_key) VALUES (?, ?)', (addr_uncompressed, str(private_key)))
vanity_conn.commit()

# Log that a vanity address was found
# print(
# "Vanity Address found and inserted into the vanity_addresses.db database:", addr)

prefix = '1MVDY'
generate_vanity_address(prefix)}