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Author Topic: F9 BE B4 D9  (Read 1143 times)
Dunster (OP)
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September 28, 2012, 06:27:45 PM
 #1

F9 BE B4 D9 1D 01 00 00 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 3B A3 ED FD 7A 7B 12 B2 7A C7 2C 3E 67 76 8F 61 7F C8 1B C3 88 8A 51 32 3A 9F B8 AA 4B 1E 5E 4A 29 AB 5F 49 FF FF 00 1D 1D AC 2B 7C 01 01 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 FF FF FF FF 4D 04 FF FF 00 1D 01 04 45 54 68 65 20 54 69 6D 65 73 20 30 33 2F 4A 61 6E 2F 32 30 30 39 20 43 68 61 6E 63 65 6C 6C 6F 72 20 6F 6E 20 62 72 69 6E 6B 20 6F 66 20 73 65 63 6F 6E 64 20 62 61 69 6C 6F 75 74 20 66 6F 72 20 62 61 6E 6B 73 FF FF FF FF 01 00 F2 05 2A 01 00 00 00 43 41 04 67 8A FD B0 FE 55 48 27 19 67 F1 A6 71 30 B7 10 5C D6 A8 28 E0 39 09 A6 79 62 E0 EA 1F 61 DE B6 49 F6 BC 3F 4C EF 38 C4 F3 55 04 E5 1E C1 12 DE 5C 38 4D F7 BA 0B 8D 57 8A 4C 70 2B 6B F1 1D 5F AC 00 00 00 00

Is this the genesis block? If so, how can I learn more about its format?

Thanks,

Dunster
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September 28, 2012, 06:31:18 PM
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Try this: https://en.bitcoin.it/wiki/Genesis_block


Dunster (OP)
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September 28, 2012, 06:49:40 PM
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Thank you for the reference to the wiki,

It looks like this is the same data except that F9 BE B4 D9 precedes this data shown in the Genesis Block wiki entry. I looked "F9 BE B4 D9"  up and F9 BE B4 D9 is a "Magic value indicating message origin network, and used to seek to next message when stream state is unknown.". This seems to be the wire format of the magic value 0xD9B4BEF9.

I wonder what happens if the contents of the block are somehow contains F9 BE B4 D9. Will bitcoind interpret this as a beginning of a new block and the chain somehow gets out of sync?

Thanks,

Dunster



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April 12, 2013, 02:54:16 AM
 #4

Thank you for the reference to the wiki,

It looks like this is the same data except that F9 BE B4 D9 precedes this data shown in the Genesis Block wiki entry. I looked "F9 BE B4 D9"  up and F9 BE B4 D9 is a "Magic value indicating message origin network, and used to seek to next message when stream state is unknown.". This seems to be the wire format of the magic value 0xD9B4BEF9.

I wonder what happens if the contents of the block are somehow contains F9 BE B4 D9. Will bitcoind interpret this as a beginning of a new block and the chain somehow gets out of sync?

Thanks,

Dunster


I'm curious about this too, have you found the answer?

BTC: 1XGKpTag3kNJeeFtsnTYs6TfvWvgG2DtR

XRP: rno91tGDJeRcnM7EMXj8KG9UTyxRGMMz8s
hyh
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April 12, 2013, 02:58:03 AM
 #5

Thank you for the reference to the wiki,

It looks like this is the same data except that F9 BE B4 D9 precedes this data shown in the Genesis Block wiki entry. I looked "F9 BE B4 D9"  up and F9 BE B4 D9 is a "Magic value indicating message origin network, and used to seek to next message when stream state is unknown.". This seems to be the wire format of the magic value 0xD9B4BEF9.


I found another link in the wiki: https://en.bitcoin.it/wiki/Protocol_specification

Putting this in the header seems to mean it is in the "Main network":

  • F9 BE B4 D9                          - Main network magic bytes

BTC: 1XGKpTag3kNJeeFtsnTYs6TfvWvgG2DtR

XRP: rno91tGDJeRcnM7EMXj8KG9UTyxRGMMz8s
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