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Author Topic: I know that "Merged mining" leaves some shit in the Bitcoin blockchain  (Read 1368 times)
finway
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October 19, 2011, 03:39:42 AM
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Since 8th October,

where can i find this piece of shit ?

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BitterTea
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October 19, 2011, 03:51:04 AM
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What are you asking, exactly?
finway
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October 19, 2011, 03:55:18 AM
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you know ,   

Merged mining pool writes some bits into the blockchain,

where can i find this bits (shit)

DeathAndTaxes
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October 19, 2011, 04:01:13 AM
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You come across as an uneducated redneck calling things you don't understand "shit".  As if somehow the namecoin bits are dirty.  Can't have these block chains comingling.

Anyways to answer your question it is located in the coinbase field in the block reward transaction.  A field that serves no purpose in Bitcoin block chain other than to add randomness to hash generation (extra nonce).

Here is an example from two recent blocks
http://blockexplorer.com/rawblock/0000000000000a4c7edded49de85d909aa8bf1ac24d6ec5eae1034722b14b176

http://blockexplorer.com/rawblock/0000000000000770ef7dc84a1583dd1cfb372deebe50ed89f0d95a4ea5be7f6d

One has namecoin hash and one doesn't.  If someone didn't tell you they were there you wouldn't even have known.
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October 19, 2011, 04:05:10 AM
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"Where can I find this piece of shit?"

lol what a great post. 

(BFL)^2 < 0
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October 19, 2011, 04:10:02 AM
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You come across as an uneducated redneck calling things you don't understand "shit".  As if somehow the namecoin bits are dirty.  Can't have these block chains comingling.

Anyways to answer your question it is located in the coinbase field in the block reward transaction.  A field that serves no purpose in Bitcoin block chain other than to add randomness to hash generation (extra nonce).

Here is an example from recent block:
http://blockexplorer.com/rawtx/fe7dd9f4fd33248942cf76bd92a6479d28ce01b1465adf64fe39770dcf50cdd8

I dont know why you even bother answering him. Motivating him to continue being a dipshiet?

Tips gladly accepted: 1LPaxHPvpzN3FbaGBaZShov3EFafxJDG42
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Gerald Davis


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October 19, 2011, 04:11:34 AM
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Someone else might want to know to inform themselves.
finway
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October 19, 2011, 05:07:33 AM
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You come across as an uneducated redneck calling things you don't understand "shit".  As if somehow the namecoin bits are dirty.  Can't have these block chains comingling.

Anyways to answer your question it is located in the coinbase field in the block reward transaction.  A field that serves no purpose in Bitcoin block chain other than to add randomness to hash generation (extra nonce).

Here is an example from two recent blocks
http://blockexplorer.com/rawblock/0000000000000a4c7edded49de85d909aa8bf1ac24d6ec5eae1034722b14b176

http://blockexplorer.com/rawblock/0000000000000770ef7dc84a1583dd1cfb372deebe50ed89f0d95a4ea5be7f6d

One has namecoin hash and one doesn't.  If someone didn't tell you they were there you wouldn't even have known.

Thanks   

Shuai
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October 19, 2011, 09:09:26 AM
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but how could the blockchain be altered just to accomodate namecoin? did everyone have to update their clients or something?
BitterTea
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October 19, 2011, 12:06:51 PM
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but how could the blockchain be altered just to accomodate namecoin? did everyone have to update their clients or something?

Only namecoin clients. Bitcoin allows for pretty much arbitrary data in the coinbase tx.
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Gerald Davis


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October 19, 2011, 11:40:49 PM
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but how could the blockchain be altered just to accomodate namecoin? did everyone have to update their clients or something?

The ones who needed to update are those who want to write to coinbase field (i.e. solo merged miners or merged pool operators).

The ONLY purpose of the coinbase field is to provide different block header hashes.  Once a block is signed the coinbase field serves no purpose except if a client needs to validate a block.  Even then it is just an arbitrary number.

To bitcoin client the namecoin hash is just an arbitrary number.  Pretty smart huh?  Putting the namecoin hash in a field which is an arbitrary number.
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