Topic: Need Help on clarifying Coinbase transaction: (Read 768 times)
So the wiki can be edited.
You won't find such blocks because Bitcoin Core rejects all blocks whose first transaction is anything else but the coinbase transaction (src/main.cpp line 2300).
I don't know that's why I want to crawl the blockchain to find out.
not sure i understand...is there a situation that the first tx is NOT coinbase?
Well, now we have to find if there are any blocks whose first tx is not the coinbase.
blockexplorer.com/b/0
blockexplorer.com/b/1
python
mmm need to iterate the block height. but first im going to figure out how to check if the coinbase is the first tx in a given block.
blockexplorer.com/b/0
blockexplorer.com/b/1
python
Code:
from urllib2 import Request, urlopen, URLError
prompt = '>>'
print "Enter block height"
height = raw_input(prompt)
key = 'http://blockexplorer.com/b/%s' % height
request = Request(key)
try:
response = urlopen(request)
block_data = response.read()
print block_data
except URLError, e:
print 'whoops', e
prompt = '>>'
print "Enter block height"
height = raw_input(prompt)
key = 'http://blockexplorer.com/b/%s' % height
request = Request(key)
try:
response = urlopen(request)
block_data = response.read()
print block_data
except URLError, e:
print 'whoops', e
mmm need to iterate the block height. but first im going to figure out how to check if the coinbase is the first tx in a given block.
bump...
Hello all.
i did some reading here:
https://en.bitcoin.it/wiki/Protocol_specification.
came across:
"A special kind of transaction, called a coinbase transaction, has no inputs. It is created by miners, and there is one coinbase transaction per block. Because each block comes with a reward of newly created Bitcoins (e.g. 50 BTC for the first 210,000 blocks), the first transaction of a block is, with few exceptions, the transaction that grants those coins..."
any info about: "few exceptions" will be much appreciated.
Cheers,
Gol.
i did some reading here:
https://en.bitcoin.it/wiki/Protocol_specification.
came across:
"A special kind of transaction, called a coinbase transaction, has no inputs. It is created by miners, and there is one coinbase transaction per block. Because each block comes with a reward of newly created Bitcoins (e.g. 50 BTC for the first 210,000 blocks), the first transaction of a block is, with few exceptions, the transaction that grants those coins..."
any info about: "few exceptions" will be much appreciated.
Cheers,
Gol.
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