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Author Topic: [ANNOUNCE] Abe 0.7: Open Source Block Explorer Knockoff  (Read 175586 times)
gdassori
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March 18, 2014, 10:27:05 AM
 #681

Hi

Quote
commit
block_tx 54506 88356
block_tx 54507 88357
Exception at 22941369
Failed to catch up {'blkfile_offset': 21942607, 'blkfile_number': 100000, 'chain_id': 2, 'loader': None, 'dirname': u'/home/guido/testnet/testnet3', 'id': 1L}
Traceback (most recent call last):
  File "Abe/DataStore.py", line 2689, in catch_up
    store.catch_up_dir(dircfg)
  File "Abe/DataStore.py", line 2948, in catch_up_dir
    store.import_blkdat(dircfg, ds, blkfile['name'])
  File "Abe/DataStore.py", line 3072, in import_blkdat
    store.import_block(b, chain = chain)
  File "Abe/DataStore.py", line 1784, in import_block
    tx['tx_id'] = store.import_tx(tx, pos == 0)
  File "Abe/DataStore.py", line 2248, in import_tx
    store.binin(txout['scriptPubKey']), pubkey_id))
  File "Abe/DataStore.py", line 521, in sql
    store._execute(cached, params)
  File "Abe/DataStore.py", line 498, in _execute
    store.cursor.execute(stmt, params)
  File "/usr/lib/python2.7/dist-packages/MySQLdb/cursors.py", line 174, in execute
    self.errorhandler(self, exc, value)
  File "/usr/lib/python2.7/dist-packages/MySQLdb/connections.py", line 36, in defaulterrorhandler
    raise errorclass, errorvalue
OperationalError: (2006, 'MySQL server has gone away')
Reconnecting after rollback error: (2006, 'MySQL server has gone away')
Reconnecting to database.

happened twice, block_tx 54507 88357
blockchain is bitcoin testnet.
mysql server is still there.
ideas?


Enabled log-sql:

Quote
EXEC:
            INSERT INTO tx (tx_id, tx_hash, tx_version, tx_lockTime, tx_size)
            VALUES (%s, %s, %s, %s, %s) (88379L, 'c333a53f0174166236e341af9cad795d21578fb87ad7a1b6d2cf8aa9c722083c', 1, 0, 998171)
EXEC: INSERT INTO txout_seq () VALUES () ()
EXEC: SELECT LAST_INSERT_ID() ()
FETCH: (115923L,)
EXEC:
                INSERT INTO txout (
                    txout_id, tx_id, txout_pos, txout_value,
                    txout_scriptPubKey, pubkey_id
                ) VALUES (%s, %s, %s, %s, %s, %s) (115923L, 88379L, 0, 0, 'fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff ffff
fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff fffff [...cut... many, many, MANY, 'f']

This is the query that screws everything up


Edit: WELL, found the problem: http://blockexplorer.com/testnet/tx/c333a53f0174166236e341af9cad795d21578fb87ad7a1b6d2cf8aa9c722083c (warning, it could crash or hang the browser)
a crazy block in testnet blockchain. Now I have to figure out how to skip this block.


Edit2: Asked myself "why skipping the block if you can include it, also if its crazy?". Answer was setting max_allowed_packet in my.cnf from 1MB to 8MB. Now it works.

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John Tobey
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March 18, 2014, 01:57:58 PM
 #682

Enabled log-sql:

Quote
EXEC:
            INSERT INTO tx (tx_id, tx_hash, tx_version, tx_lockTime, tx_size)
            VALUES (%s, %s, %s, %s, %s) (88379L, 'c333a53f0174166236e341af9cad795d21578fb87ad7a1b6d2cf8aa9c722083c', 1, 0, 998171)
EXEC: INSERT INTO txout_seq () VALUES () ()
EXEC: SELECT LAST_INSERT_ID() ()
FETCH: (115923L,)
EXEC:
                INSERT INTO txout (
                    txout_id, tx_id, txout_pos, txout_value,
                    txout_scriptPubKey, pubkey_id
                ) VALUES (%s, %s, %s, %s, %s, %s) (115923L, 88379L, 0, 0, 'fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff ffff
fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff fffff [...cut... many, many, MANY, 'f']

This is the query that screws everything up


Edit: WELL, found the problem: http://blockexplorer.com/testnet/tx/c333a53f0174166236e341af9cad795d21578fb87ad7a1b6d2cf8aa9c722083c
a crazy block in testnet blockchain. Now I have to figure out how to skip this block.

I don't know when I'll have time to fix this, but I'm glad we see it on testnet before main.  Thanks.

Can a change to the best-chain criteria protect against 51% to 90+% attacks without a hard fork?
gdassori
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March 18, 2014, 01:58:51 PM
 #683

John, check the edit2, previous post: I included it. About the strange transaction: it's bread for gavin's teeths but since the block is old, I guess he already know about this.

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March 19, 2014, 10:47:41 AM
 #684

Coin: [FC] Fuguecoin
 https://bitcointalk.org/index.php?topic=519138.0
https://github.com/fuguecoin/fuguecoin


http://agran.net:2750/chains


abe-my.conf

 dbtype MySQLdb
    connect-args {"user":"abe","db":"abe","passwd":"*****"}
    upgrade
    port 2750
    host agran.net


datadir = [{
        "dirname": "/root/.fuguecoin",
        "chain":   "Fuguecoin",
        "code3":   "FC",
        "address_version": "\u0023",
        "conf": "fuguecoin.conf"
}]


DataStore.py
CHAIN_CONFIG = [
{"chain":"Fuguecoin",
     "code3":"FC", "address_version":"\x23", "magic":"\x0b\x11\x09\x07"}
]

python -m Abe.abe --config abe-my.conf --commit-bytes 100000 --no-serve
python -m Abe.abe --config abe-my.conf

http://agran.net:2750/chains

Shows only the first block. The thing I do not understand.

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March 19, 2014, 03:52:59 PM
 #685

Shows only the first block. The thing I do not understand.

When Abe loads many blocks but shows only the genesis block, it means that Abe is using the wrong algorithm to calculate the block header hash as it appears in the next block's hashPrev field.  By default, Abe uses double-SHA256, the same as Bitcoin.  Many coins use scrypt.  I would like to make this selectable by datadir=[{...,"hashPrev":"scrypt"}], but for now it requires a few lines of code.  Look for "NovaCoin" in the sources for an example.

Can a change to the best-chain criteria protect against 51% to 90+% attacks without a hard fork?
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March 19, 2014, 04:23:04 PM
 #686

Fuguecoin is very necessary Block Explorer. I now pronounce the bounty for fist Block Explorer:

https://bitcointalk.org/index.php?topic=519138.msg5786707#msg5786707

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March 19, 2014, 07:37:23 PM
 #687

Guys, help me, please.
Trying to up abe with fastcgi, but all output instead to go to browser
going to stderr, like this

Code:
2014-03-19 22:34:07,163 [8311:MainThread] Abe.DataStore INFO - block_tx 53355 138881
2014-03-19 22:34:07,165 [8311:MainThread] Abe.DataStore DEBUG - commit
2014-03-19 22:34:07,169 [8311:MainThread] Abe.DataStore INFO - block_tx 53356 138882
2014-03-19 22:34:07,171 [8311:MainThread] Abe.DataStore DEBUG - commit
2014-03-19 22:34:07,178 [8311:MainThread] Abe.DataStore INFO - block_tx 53357 138883
2014-03-19 22:34:07,178 [8311:MainThread] Abe.DataStore INFO - block_tx 53357 138884
2014-03-19 22:34:07,186 [8311:MainThread] Abe.DataStore DEBUG - commit
2014-03-19 22:34:07,192 [8311:MainThread] Abe.DataStore INFO - block_tx 53358 138885
2014-03-19 22:34:07,192 [8311:MainThread] Abe.DataStore INFO - block_tx 53358 138886
2014-03-19 22:34:07,196 [8311:MainThread] Abe.DataStore DEBUG - commit
2014-03-19 22:34:07,196 [8311:MainThread] __main__ INFO - Abe initialized.
WSGIServer: missing FastCGI param REQUEST_METHOD required by WSGI!
WSGIServer: missing FastCGI param SERVER_NAME required by WSGI!
WSGIServer: missing FastCGI param SERVER_PORT required by WSGI!
WSGIServer: missing FastCGI param SERVER_PROTOCOL required by WSGI!
2014-03-19 22:34:07,199 [8311:MainThread] Abe.DataStore INFO - Opened /home/berg/.execoin/blocks/blk00000.dat
Status: 200 OK
Content-type: text/html; charset=utf-8
Cache-Control: max-age=30


<!DOCTYPE html>
<html lang="en">
<head>
    <link rel="stylesheet" type="text/css"
     href="static/abe.css" />
    <link rel="shortcut icon" href="static/favicon.ico" />
    <title>Abe Search</title>
</head>
<body>
    <h1><a href="chains"><img
     src="static/logo32.png" alt="Abe logo" /></a> Abe Search
    </h1>
    <p>Search by address, block number or hash, transaction or public key hash, or chain name:</p>
<form action="search"><p>
<input name="q" size="64" value="" /><button type="submit">Search</button>
<br />Address or hash search requires at least the first 6 characters.</p></form>
<table>
<tr><th>Currency</th><th>Code</th><th>Block</th><th>Time</th><th>Started</th><th>Age (days)</th><th>Coins Created</th><th>Avg Coin Age</th><th>% <a href="https://en.bitcoin.it/wiki/Bitcoin_Days_Destroyed">CoinDD</a></th></tr>
<tr><td><a href="chain/Execoin">Execoin</a></td><td>EXE</td><td><a href="block/5daea528b57ab59e147220674a71bf9ad3f93d9ab36cfd09e4d4cf5c50fa00e2">53344</a></td><td>2014-03-19 19:33:38</td><td>2014-01-29</td><td>49.7427</td><td>2667250</td><td>9.16489</td><td>26.5331%</td></tr>
</table>

    <p><a href="q">API</a> (machine-readable pages)</p>
    <p style="font-size: smaller">
        <span style="font-style: italic">
            Powered by <a href="https://github.com/bitcoin-abe/bitcoin-abe">Abe</a>
        </span>

        Tips appreciated!
        <a href="address/1PWC7PNHL1SgvZaN7xEtygenKjWobWsCuf">BTC</a>
        <a href="address/NJ3MSELK1cWnqUa6xhF2wUYAnz3RSrWXcK">NMC</a>
    </p>
</body>
</html>



Configuring like in README-FASTCGI.txt
Also fell in trouble with PATH_INFO
Code:
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/flup/server/fcgi_base.py", line 558, in run
    protocolStatus, appStatus = self.server.handler(self)
  File "/usr/lib/python2.7/site-packages/flup/server/fcgi_base.py", line 1118, in handler
    result = self.application(environ, start_response)
  File "/usr/lib/python2.7/site-packages/Abe/abe.py", line 226, in __call__
    if abe.fix_path_info(env):
  File "/usr/lib/python2.7/site-packages/Abe/abe.py", line 1940, in fix_path_info
    if pi[-1] != '/' and env['PATH_INFO'][-1] == '/':
IndexError: string index out of range


But fixed it with

Code:
#! /bin/sh
[b]PATH_INFO='/'[/b] PYTHONUNBUFFERED=1 exec python -m Abe.abe --config /home/berg/cgi-bin/abe-exe.conf --static-path static/ --watch-pid="$1"
Still dont sure how it correct...

execo.in
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March 19, 2014, 11:21:01 PM
 #688

Guys, help me, please.
Trying to up abe with fastcgi, but all output instead to go to browser
going to stderr, like this

Code:
2014-03-19 22:34:07,163 [8311:MainThread] Abe.DataStore INFO - block_tx 53355 138881
2014-03-19 22:34:07,165 [8311:MainThread] Abe.DataStore DEBUG - commit
2014-03-19 22:34:07,169 [8311:MainThread] Abe.DataStore INFO - block_tx 53356 138882
2014-03-19 22:34:07,171 [8311:MainThread] Abe.DataStore DEBUG - commit
2014-03-19 22:34:07,178 [8311:MainThread] Abe.DataStore INFO - block_tx 53357 138883
2014-03-19 22:34:07,178 [8311:MainThread] Abe.DataStore INFO - block_tx 53357 138884
2014-03-19 22:34:07,186 [8311:MainThread] Abe.DataStore DEBUG - commit
2014-03-19 22:34:07,192 [8311:MainThread] Abe.DataStore INFO - block_tx 53358 138885
2014-03-19 22:34:07,192 [8311:MainThread] Abe.DataStore INFO - block_tx 53358 138886
2014-03-19 22:34:07,196 [8311:MainThread] Abe.DataStore DEBUG - commit
2014-03-19 22:34:07,196 [8311:MainThread] __main__ INFO - Abe initialized.
WSGIServer: missing FastCGI param REQUEST_METHOD required by WSGI!
WSGIServer: missing FastCGI param SERVER_NAME required by WSGI!
WSGIServer: missing FastCGI param SERVER_PORT required by WSGI!
WSGIServer: missing FastCGI param SERVER_PROTOCOL required by WSGI!
2014-03-19 22:34:07,199 [8311:MainThread] Abe.DataStore INFO - Opened /home/berg/.execoin/blocks/blk00000.dat
Status: 200 OK
Content-type: text/html; charset=utf-8
Cache-Control: max-age=30


<!DOCTYPE html>
<html lang="en">
<head>
    <link rel="stylesheet" type="text/css"
     href="static/abe.css" />
    <link rel="shortcut icon" href="static/favicon.ico" />
    <title>Abe Search</title>
</head>
<body>
    <h1><a href="chains"><img
     src="static/logo32.png" alt="Abe logo" /></a> Abe Search
    </h1>
    <p>Search by address, block number or hash, transaction or public key hash, or chain name:</p>
<form action="search"><p>
<input name="q" size="64" value="" /><button type="submit">Search</button>
<br />Address or hash search requires at least the first 6 characters.</p></form>
<table>
<tr><th>Currency</th><th>Code</th><th>Block</th><th>Time</th><th>Started</th><th>Age (days)</th><th>Coins Created</th><th>Avg Coin Age</th><th>% <a href="https://en.bitcoin.it/wiki/Bitcoin_Days_Destroyed">CoinDD</a></th></tr>
<tr><td><a href="chain/Execoin">Execoin</a></td><td>EXE</td><td><a href="block/5daea528b57ab59e147220674a71bf9ad3f93d9ab36cfd09e4d4cf5c50fa00e2">53344</a></td><td>2014-03-19 19:33:38</td><td>2014-01-29</td><td>49.7427</td><td>2667250</td><td>9.16489</td><td>26.5331%</td></tr>
</table>

    <p><a href="q">API</a> (machine-readable pages)</p>
    <p style="font-size: smaller">
        <span style="font-style: italic">
            Powered by <a href="https://github.com/bitcoin-abe/bitcoin-abe">Abe</a>
        </span>

        Tips appreciated!
        <a href="address/1PWC7PNHL1SgvZaN7xEtygenKjWobWsCuf">BTC</a>
        <a href="address/NJ3MSELK1cWnqUa6xhF2wUYAnz3RSrWXcK">NMC</a>
    </p>
</body>
</html>



Configuring like in README-FASTCGI.txt
Also fell in trouble with PATH_INFO
Code:
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/flup/server/fcgi_base.py", line 558, in run
    protocolStatus, appStatus = self.server.handler(self)
  File "/usr/lib/python2.7/site-packages/flup/server/fcgi_base.py", line 1118, in handler
    result = self.application(environ, start_response)
  File "/usr/lib/python2.7/site-packages/Abe/abe.py", line 226, in __call__
    if abe.fix_path_info(env):
  File "/usr/lib/python2.7/site-packages/Abe/abe.py", line 1940, in fix_path_info
    if pi[-1] != '/' and env['PATH_INFO'][-1] == '/':
IndexError: string index out of range


But fixed it with

Code:
#! /bin/sh
[b]PATH_INFO='/'[/b] PYTHONUNBUFFERED=1 exec python -m Abe.abe --config /home/berg/cgi-bin/abe-exe.conf --static-path static/ --watch-pid="$1"
Still dont sure how it correct...


can you post your abe-exe.conf setings?

also you need to setup you apache server to run Abe.

Did you follow this guide ?
https://github.com/bitcoin-abe/bitcoin-abe/blob/master/README-FASTCGI.txt

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unick
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March 19, 2014, 11:30:34 PM
 #689

is it possible to get address balance from command line query?

I get the following error
Code:
python -m Abe.abe --query /chain/FairCoin/q/addressbalance/fc44xJawRecE9xrZwGHMUtAfxWeS3CJqtP
Traceback (most recent call last):
  File "/usr/lib/python2.7/runpy.py", line 162, in _run_module_as_main
    "__main__", fname, loader, pkg_name)
  File "/usr/lib/python2.7/runpy.py", line 72, in _run_code
    exec code in run_globals
  File "/usr/local/lib/python2.7/dist-packages/Abe/abe.py", line 2374, in <module>
    sys.exit(main(sys.argv[1:]))
  File "/usr/local/lib/python2.7/dist-packages/Abe/abe.py", line 2370, in main
    serve(store)
  File "/usr/local/lib/python2.7/dist-packages/Abe/abe.py", line 2236, in serve
    }, start_response)
  File "/usr/local/lib/python2.7/dist-packages/Abe/abe.py", line 276, in __call__
    handler(page)
  File "/usr/local/lib/python2.7/dist-packages/Abe/abe.py", line 415, in handle_chain
    chain = abe.chain_lookup_by_name(symbol)
  File "/usr/local/lib/python2.7/dist-packages/Abe/abe.py", line 397, in chain_lookup_by_name
    ret = abe.store.get_chain_by_name(symbol)
  File "/usr/local/lib/python2.7/dist-packages/Abe/DataStore.py", line 819, in get_chain_by_name
    return store.chains_by.name.get(name, None)
AttributeError: 'DataStore' object has no attribute 'chains_by'

maybe I have the syntax wrong

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elcoco
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March 20, 2014, 01:30:34 AM
 #690

Shows only the first block. The thing I do not understand.

When Abe loads many blocks but shows only the genesis block, it means that Abe is using the wrong algorithm to calculate the block header hash as it appears in the next block's hashPrev field.  By default, Abe uses double-SHA256, the same as Bitcoin.  Many coins use scrypt.  I would like to make this selectable by datadir=[{...,"hashPrev":"scrypt"}], but for now it requires a few lines of code.  Look for "NovaCoin" in the sources for an example.

is there a way to get a raw block before abe splits it and puts it in the database, maybe there are new fields added in this coin, or the data got moved around, I can then change the abe code to make it work

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March 20, 2014, 02:57:57 PM
 #691

Shows only the first block. The thing I do not understand.

When Abe loads many blocks but shows only the genesis block, it means that Abe is using the wrong algorithm to calculate the block header hash as it appears in the next block's hashPrev field.  By default, Abe uses double-SHA256, the same as Bitcoin.  Many coins use scrypt.  I would like to make this selectable by datadir=[{...,"hashPrev":"scrypt"}], but for now it requires a few lines of code.  Look for "NovaCoin" in the sources for an example.

is there a way to get a raw block before abe splits it and puts it in the database, maybe there are new fields added in this coin, or the data got moved around, I can then change the abe code to make it work

See how ds_parse_block and ds_parse_block_header are overridden in Abe/Chain.py.  However, note that this module is new and under heavy development.

Can a change to the best-chain criteria protect against 51% to 90+% attacks without a hard fork?
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March 20, 2014, 04:59:14 PM
 #692


can you post your abe-exe.conf setings?

also you need to setup you apache server to run Abe.

Did you follow this guide ?
https://github.com/bitcoin-abe/bitcoin-abe/blob/master/README-FASTCGI.txt

Yep, read this and make everything as described.

I found, that sudo make some troubles, hard to find it. So, i bypass it, truncate abe.fcgi to

Code:
#!/usr/bin/python
import subprocess, sys, os
command=["/home/berg/exeblockexp/abe", str(os.getpid())]
subprocess.Popen(command, stdin=sys.stdin).wait()

this is sudo log, if it useful

Code:
Mar 20 02:00:21 noc sudo:   apache : TTY=unknown ; PWD=/var/www/localhost/htdocs/execoin ; USER=berg ; TSID=000028 ; COMMAND=/home/berg/exeblockexp/abe 13410

i can't find something erroneous in this

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March 20, 2014, 07:45:09 PM
 #693

Check this quote for reference of original issue

So this is a bump and an update at the same time. Can't read the raw data from GrowthCoin's blockchain still.

here's the error again

Code:
root@grw:~/bitcoin-abe# python -m Abe.abe --config /home/abe/abe-mysql.conf --no-serve
Opened /root/.GrowthCoin/blk0001.dat
Chain 11 genesis tx: 020000001d0bfa51010000000000000000000000000000000000000000000000000000000000000000ffffffffb904ffff001d020f274caf4a756c792033312c2032303133203132706d204544543a2054686520552e532e2065636f6e6f6d79206772657720312e372520696e20746865207365636f6e6420717561727465722c20616964656420627920736f6c696420636f6e73756d6572207370656e64696e6720616e6420612072616d702d757020696e20627573696e65737320696e766573746d656e742c2074686520676f7665726e6d656e742073616964205765646e65736461792effffffff0100000000000000000000000000
Exception at 368
Failed to catch up {'blkfile_offset': 0, 'blkfile_number': 1, 'chain_id': None, 'loader': None, 'conf': None, 'dirname': '/root/.GrowthCoin', 'id': 3L}
Traceback (most recent call last):
  File "Abe/DataStore.py", line 2789, in catch_up
    store.catch_up_dir(dircfg)
  File "Abe/DataStore.py", line 3053, in catch_up_dir
    store.import_blkdat(dircfg, ds, blkfile['name'])
  File "Abe/DataStore.py", line 3185, in import_blkdat
    store.import_block(b, chain = chain)
  File "Abe/DataStore.py", line 1804, in import_block
    raise MerkleRootMismatch(b['hash'], tx_hash_array)
MerkleRootMismatch: Block header Merkle root does not match its transactions. block hash=d5e4fc54c53a9a20bbe01e70d8b47ce66f15c1bd3504f7e80390bf5601150ded

So I went to see what happens at byte 368.

Code:
root@grw:~/bitcoin-abe# hexdump -n 368 -C ~/.GrowthCoin/blk0001.dat
00000000  a5 ef db fd 69 01 00 00  01 00 00 00 00 00 00 00  |....i...........|
00000010  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000020  00 00 00 00 00 00 00 00  00 00 00 00 bf f2 79 9b  |..............y.|
00000030  bf ec 52 41 32 ea 94 54  5f 53 83 7c 5c eb 46 26  |..RA2..T_S.|\.F&|
00000040  b6 3d 18 70 76 01 0c cb  96 10 53 14 31 0b fa 51  |.=.pv.....S.1..Q|
00000050  ff ff 0f 1e ba 6e 15 01  01 02 00 00 00 1d 0b fa  |.....n..........|
00000060  51 01 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |Q...............|
00000070  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000080  00 00 ff ff ff ff b9 04  ff ff 00 1d 02 0f 27 4c  |..............'L|
00000090  af 4a 75 6c 79 20 33 31  2c 20 32 30 31 33 20 31  |.July 31, 2013 1|
000000a0  32 70 6d 20 45 44 54 3a  20 54 68 65 20 55 2e 53  |2pm EDT: The U.S|
000000b0  2e 20 65 63 6f 6e 6f 6d  79 20 67 72 65 77 20 31  |. economy grew 1|
000000c0  2e 37 25 20 69 6e 20 74  68 65 20 73 65 63 6f 6e  |.7% in the secon|
000000d0  64 20 71 75 61 72 74 65  72 2c 20 61 69 64 65 64  |d quarter, aided|
000000e0  20 62 79 20 73 6f 6c 69  64 20 63 6f 6e 73 75 6d  | by solid consum|
000000f0  65 72 20 73 70 65 6e 64  69 6e 67 20 61 6e 64 20  |er spending and |
00000100  61 20 72 61 6d 70 2d 75  70 20 69 6e 20 62 75 73  |a ramp-up in bus|
00000110  69 6e 65 73 73 20 69 6e  76 65 73 74 6d 65 6e 74  |iness investment|
00000120  2c 20 74 68 65 20 67 6f  76 65 72 6e 6d 65 6e 74  |, the government|
00000130  20 73 61 69 64 20 57 65  64 6e 65 73 64 61 79 2e  | said Wednesday.|
00000140  ff ff ff ff 01 00 00 00  00 00 00 00 00 00 00 00  |................|
00000150  00 00 1d 74 65 78 74 3a  47 72 6f 77 74 68 43 6f  |...text:GrowthCo|
00000160  69 6e 20 67 65 6e 65 73  69 73 20 62 6c 6f 63 6b  |in genesis block|
00000170

at byte 369

Code:
root@grw:~/bitcoin-abe# hexdump -n 369 -C ~/.GrowthCoin/blk0001.dat
00000000  a5 ef db fd 69 01 00 00  01 00 00 00 00 00 00 00  |....i...........|
00000010  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000020  00 00 00 00 00 00 00 00  00 00 00 00 bf f2 79 9b  |..............y.|
00000030  bf ec 52 41 32 ea 94 54  5f 53 83 7c 5c eb 46 26  |..RA2..T_S.|\.F&|
00000040  b6 3d 18 70 76 01 0c cb  96 10 53 14 31 0b fa 51  |.=.pv.....S.1..Q|
00000050  ff ff 0f 1e ba 6e 15 01  01 02 00 00 00 1d 0b fa  |.....n..........|
00000060  51 01 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |Q...............|
00000070  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000080  00 00 ff ff ff ff b9 04  ff ff 00 1d 02 0f 27 4c  |..............'L|
00000090  af 4a 75 6c 79 20 33 31  2c 20 32 30 31 33 20 31  |.July 31, 2013 1|
000000a0  32 70 6d 20 45 44 54 3a  20 54 68 65 20 55 2e 53  |2pm EDT: The U.S|
000000b0  2e 20 65 63 6f 6e 6f 6d  79 20 67 72 65 77 20 31  |. economy grew 1|
000000c0  2e 37 25 20 69 6e 20 74  68 65 20 73 65 63 6f 6e  |.7% in the secon|
000000d0  64 20 71 75 61 72 74 65  72 2c 20 61 69 64 65 64  |d quarter, aided|
000000e0  20 62 79 20 73 6f 6c 69  64 20 63 6f 6e 73 75 6d  | by solid consum|
000000f0  65 72 20 73 70 65 6e 64  69 6e 67 20 61 6e 64 20  |er spending and |
00000100  61 20 72 61 6d 70 2d 75  70 20 69 6e 20 62 75 73  |a ramp-up in bus|
00000110  69 6e 65 73 73 20 69 6e  76 65 73 74 6d 65 6e 74  |iness investment|
00000120  2c 20 74 68 65 20 67 6f  76 65 72 6e 6d 65 6e 74  |, the government|
00000130  20 73 61 69 64 20 57 65  64 6e 65 73 64 61 79 2e  | said Wednesday.|
00000140  ff ff ff ff 01 00 00 00  00 00 00 00 00 00 00 00  |................|
00000150  00 00 1d 74 65 78 74 3a  47 72 6f 77 74 68 43 6f  |...text:GrowthCo|
00000160  69 6e 20 67 65 6e 65 73  69 73 20 62 6c 6f 63 6b  |in genesis block|
00000170  00                                                |.|
00000171

and byte 374 --- @ byte 370 we get the first byte of the magic number

Code:
root@grw:~/bitcoin-abe# hexdump -n 374 -C ~/.GrowthCoin/blk0001.dat
00000000  a5 ef db fd 69 01 00 00  01 00 00 00 00 00 00 00  |....i...........|
00000010  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000020  00 00 00 00 00 00 00 00  00 00 00 00 bf f2 79 9b  |..............y.|
00000030  bf ec 52 41 32 ea 94 54  5f 53 83 7c 5c eb 46 26  |..RA2..T_S.|\.F&|
00000040  b6 3d 18 70 76 01 0c cb  96 10 53 14 31 0b fa 51  |.=.pv.....S.1..Q|
00000050  ff ff 0f 1e ba 6e 15 01  01 02 00 00 00 1d 0b fa  |.....n..........|
00000060  51 01 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |Q...............|
00000070  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000080  00 00 ff ff ff ff b9 04  ff ff 00 1d 02 0f 27 4c  |..............'L|
00000090  af 4a 75 6c 79 20 33 31  2c 20 32 30 31 33 20 31  |.July 31, 2013 1|
000000a0  32 70 6d 20 45 44 54 3a  20 54 68 65 20 55 2e 53  |2pm EDT: The U.S|
000000b0  2e 20 65 63 6f 6e 6f 6d  79 20 67 72 65 77 20 31  |. economy grew 1|
000000c0  2e 37 25 20 69 6e 20 74  68 65 20 73 65 63 6f 6e  |.7% in the secon|
000000d0  64 20 71 75 61 72 74 65  72 2c 20 61 69 64 65 64  |d quarter, aided|
000000e0  20 62 79 20 73 6f 6c 69  64 20 63 6f 6e 73 75 6d  | by solid consum|
000000f0  65 72 20 73 70 65 6e 64  69 6e 67 20 61 6e 64 20  |er spending and |
00000100  61 20 72 61 6d 70 2d 75  70 20 69 6e 20 62 75 73  |a ramp-up in bus|
00000110  69 6e 65 73 73 20 69 6e  76 65 73 74 6d 65 6e 74  |iness investment|
00000120  2c 20 74 68 65 20 67 6f  76 65 72 6e 6d 65 6e 74  |, the government|
00000130  20 73 61 69 64 20 57 65  64 6e 65 73 64 61 79 2e  | said Wednesday.|
00000140  ff ff ff ff 01 00 00 00  00 00 00 00 00 00 00 00  |................|
00000150  00 00 1d 74 65 78 74 3a  47 72 6f 77 74 68 43 6f  |...text:GrowthCo|
00000160  69 6e 20 67 65 6e 65 73  69 73 20 62 6c 6f 63 6b  |in genesis block|
00000170  00 a5 ef db fd 08                                 |......|
00000176

So my guess, and I'm no expert nor do I know how to fix this, is that Abe can't read the lenght of the block properly? or like the error says, the merkle root is off... I'm willing to help searching but I'm a bit over my head with this so a few pointers in the right direction would be appreciated.

Thanks

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March 20, 2014, 08:03:10 PM
 #694

Code:
#!/usr/bin/python
import subprocess, sys, os
command=["/home/berg/exeblockexp/abe", str(os.getpid())]
subprocess.Popen(command, stdin=sys.stdin).wait()

this is sudo log, if it useful

Code:
Mar 20 02:00:21 noc sudo:   apache : TTY=unknown ; PWD=/var/www/localhost/htdocs/execoin ; USER=berg ; TSID=000028 ; COMMAND=/home/berg/exeblockexp/abe 13410

i can't find something erroneous in this

Well you didn't post your abe-exe.conf, here's mine for reference

Code:
default-loader=no-serve
dbtype MySQLdb
connect-args {"user":"abe","db":"abe","passwd":"PASSWORD"}
upgrade
datadir=[]

you will notice that I don't want abe to load in "server" mode and read the block chain, just want it to connect to the database and read it's content.  I used another Abe instance to read the blockchain and update the database.

If you followed the guide, it is mentioned how to add your "abe" user (the one that will run the FastCGI script) to the sudoers file so your apache user can access the FastCGI script without password and be able to run it.

Make sure you edit your sudoers file with visudo and append to it

Code:
# This allows the Apache account (www-data) to run Abe as USER.
www-data ALL=(USER) NOPASSWD: /home/USER/cgi-bin/abe

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March 21, 2014, 11:29:41 AM
 #695

Our coin Fuguecoin is very necessary Block Explorer. I now pronounce the bounty for fist Block Explorer.
(Must be able to find the balance of addresses.)

Bounty: 1000 FC (0.05 BTC)

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March 21, 2014, 08:05:38 PM
 #696

is it safe to assume that when using the RPC loader rather than the blkfile loader that it doesn't matter the algo of the coin since bitcoin-abe is using rpc call to get data ?
I'm trying to setup fuguecoin using RPC here's my config
datadir += [{"dirname": "/home/azureuser/.fuguecoin",
        "loader": "rpc",
        "chain": "FugueCoin",
        "code3": "FC",
        "conf":"fuguecoin.conf",
        "address_version" : "\u0023",
        "magic" : "\u00f9\u00be\u00b4\u00d4"
         }]

i has getting "RPC data not understood: block hash mismatch"
so i figured out the genesis transaction and block 0 hash
I tried this
import-tx += 010000006eb7dc52010000000000000000000000000000000000000000000000000000000000000 000ffffffff7604ffff001d020f274c6c4a616e2032302c20323031342031323a3430616d204544 542e204e65776567672074656173657220737567676573747320746865205553206f6e6c696e652 072657461696c206769616e74206d617920626567696e20616363657074696e6720626974636f69 6e20736f6f6effffffff0100000000000000000000000000
then got   
store = DataStore.new(args)

  File "Abe/DataStore.py", line 216, in __init__
    store.maybe_import_binary_tx(chain_name, str(hex_tx).decode('hex'))
UnboundLocalError: local variable 'chain_name' referenced before assignment

so i changed my config file to this:
import-tx += {"chain":"FugueCoin" ,"tx":"010000006eb7dc52010000000000000000000000000000000000000000000000000000000000000 000ffffffff7604ffff001d020f274c6c4a616e2032302c20323031342031323a3430616d204544 542e204e65776567672074656173657220737567676573747320746865205553206f6e6c696e652 072657461696c206769616e74206d617920626567696e20616363657074696e6720626974636f69 6e20736f6f6effffffff0100000000000000000000000000"}
no i'm getting this

  File "Abe/DataStore.py", line 2323, in maybe_import_binary_tx
    chain = store.chains_by.name(chain_name)
TypeError: 'dict' object is not callable


changed that line from chain = store.chains_by.name(chain_name) to chain = store.chains_by.name.get(chain_name)
and getting
File "Abe/BCDataStream.py", line 110, in _read_num
    (i,) = struct.unpack_from(format, self.input, self.read_cursor)
struct.error: unpack_from requires a buffer of at least 4 bytes


 Huh Huh Huh Angry Angry Angry Huh


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March 21, 2014, 08:37:05 PM
 #697

is it safe to assume that when using the RPC loader rather than the blkfile loader that it doesn't matter the algo of the coin since bitcoin-abe is using rpc call to get data ?

I guess so.

I'm trying to setup fuguecoin using RPC here's my config
datadir += [{"dirname": "/home/azureuser/.fuguecoin",
        "loader": "rpc",
        "chain": "FugueCoin",
        "code3": "FC",
        "conf":"fuguecoin.conf",
        "address_version" : "\u0023",
        "magic" : "\u00f9\u00be\u00b4\u00d4"
         }]

i has getting "RPC data not understood: block hash mismatch"
so i figured out the genesis transaction and block 0 hash
I tried this
import-tx += 010000006eb7dc52010000000000000000000000000000000000000000000000000000000000000 000ffffffff7604ffff001d020f274c6c4a616e2032302c20323031342031323a3430616d204544 542e204e65776567672074656173657220737567676573747320746865205553206f6e6c696e652 072657461696c206769616e74206d617920626567696e20616363657074696e6720626974636f69 6e20736f6f6effffffff0100000000000000000000000000
then got   
store = DataStore.new(args)

  File "Abe/DataStore.py", line 216, in __init__
    store.maybe_import_binary_tx(chain_name, str(hex_tx).decode('hex'))
UnboundLocalError: local variable 'chain_name' referenced before assignment

so i changed my config file to this:
import-tx += {"chain":"FugueCoin" ,"tx":"010000006eb7dc52010000000000000000000000000000000000000000000000000000000000000 000ffffffff7604ffff001d020f274c6c4a616e2032302c20323031342031323a3430616d204544 542e204e65776567672074656173657220737567676573747320746865205553206f6e6c696e652 072657461696c206769616e74206d617920626567696e20616363657074696e6720626974636f69 6e20736f6f6effffffff0100000000000000000000000000"}
no i'm getting this

  File "Abe/DataStore.py", line 2323, in maybe_import_binary_tx
    chain = store.chains_by.name(chain_name)
TypeError: 'dict' object is not callable


changed that line from chain = store.chains_by.name(chain_name) to chain = store.chains_by.name.get(chain_name)
and getting
File "Abe/BCDataStream.py", line 110, in _read_num
    (i,) = struct.unpack_from(format, self.input, self.read_cursor)
struct.error: unpack_from requires a buffer of at least 4 bytes


 Huh Huh Huh Angry Angry Angry Huh

Thanks, I've fixed the last two errors.  You will still get block hash mismatch unless you disable the check or add support for your coin.

Can a change to the best-chain criteria protect against 51% to 90+% attacks without a hard fork?
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March 21, 2014, 09:17:17 PM
 #698

what is the proper format for import-tx?

i'm getting this error after your fixes
  File "Abe/DataStore.py", line 216, in __init__
    store.maybe_import_binary_tx(chain_name, str(hex_tx).decode('hex'))
  File "/usr/lib/python2.7/encodings/hex_codec.py", line 42, in hex_decode
    output = binascii.a2b_hex(input)
TypeError: Odd-length string


from
import-tx += 010000006eb7dc52010000000000000000000000000000000000000000000000000000000000000 000ffffffff7604ffff001d020f274c6c4a616e2032302c20323031342031323a3430616d204544 542e204e65776567672074656173657220737567676573747320746865205553206f6e6c696e652 072657461696c206769616e74206d617920626567696e20616363657074696e6720626974636f69 6e20736f6f6effffffff0100000000000000000000000000

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March 21, 2014, 10:28:31 PM
 #699

Is there a reason why my questions don't get answered ?

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March 22, 2014, 06:51:34 AM
 #700

is it possible to get address balance from command line query?

I get the following error
Code:
python -m Abe.abe --query /chain/FairCoin/q/addressbalance/fc44xJawRecE9xrZwGHMUtAfxWeS3CJqtP
Traceback (most recent call last):
  File "/usr/lib/python2.7/runpy.py", line 162, in _run_module_as_main
    "__main__", fname, loader, pkg_name)
  File "/usr/lib/python2.7/runpy.py", line 72, in _run_code
    exec code in run_globals
  File "/usr/local/lib/python2.7/dist-packages/Abe/abe.py", line 2374, in <module>
    sys.exit(main(sys.argv[1:]))
  File "/usr/local/lib/python2.7/dist-packages/Abe/abe.py", line 2370, in main
    serve(store)
  File "/usr/local/lib/python2.7/dist-packages/Abe/abe.py", line 2236, in serve
    }, start_response)
  File "/usr/local/lib/python2.7/dist-packages/Abe/abe.py", line 276, in __call__
    handler(page)
  File "/usr/local/lib/python2.7/dist-packages/Abe/abe.py", line 415, in handle_chain
    chain = abe.chain_lookup_by_name(symbol)
  File "/usr/local/lib/python2.7/dist-packages/Abe/abe.py", line 397, in chain_lookup_by_name
    ret = abe.store.get_chain_by_name(symbol)
  File "/usr/local/lib/python2.7/dist-packages/Abe/DataStore.py", line 819, in get_chain_by_name
    return store.chains_by.name.get(name, None)
AttributeError: 'DataStore' object has no attribute 'chains_by'

maybe I have the syntax wrong

I'm sorry for the cryptic message.  The problem is that you have to give --config (or --dbtype and --connect-args) along with --query if the query involves the database, as this one does.

Can a change to the best-chain criteria protect against 51% to 90+% attacks without a hard fork?
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