Author Topic: Merkle root  (Read 73 times)

Offline Mikhail

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Merkle root
« on: April 06, 2018, 02:19:07 am »
Hello everybody!

I am trying to calculate Merkle root of block #1814622. I got raw data from the Blockchain:
00000020
7573FFF2B563EB3E47485E7FF45770878EB51EAA7E4B8F50A36C1F0000000000
8805576AF81068D9BEEF3F26BD8704EB90075BD2E1814F17B948F3EE30B7A93C
394DF459 F5A0001C 02327E31
01 01000000 0001 01
0000000000000000000000000000000000000000000000000000000000000000 FFFFFFFF20035EB01B043A4DF4590828070942780000000D2F537570724E6F76612E63632F
00000000 02 0000000000000000 266A24AA21A9EDE2F61C3F71D1DEFD3FA999DFA36953755C690689799962B48BEBD836974E8CF90065CD1D00000000 1976A914F7FDC51CB004C521FC2E4430CFCC73A53FD309BB88AC
01 20 0000000000000000000000000000000000000000000000000000000000000000 00000000

Merkle root is 8805576AF81068D9BEEF3F26BD8704EB90075BD2E1814F17B948F3EE30B7A93C

This block contains only one transaction - coinbase transaction.
So I excluded marker 0x00, flag 0x01, number of whitness items 0x01, witness item size 0x20 and WTXID 0x00...00 (all removed elements are underlined) and found the coinbase transaction (bold):
01000000 01
0000000000000000000000000000000000000000000000000000000000000000 FFFFFFFF 20035EB01B043A4DF4590828070942780000000D2F537570724E6F76612E63632F 00000000 020000000000000000266A24AA21A9EDE2F61C3F71D1DEFD3FA999DFA36953755C690689799962B48BEBD836974E8CF90065CD1D00000000 1976A914F7FDC51CB004C521FC2E4430CFCC73A53FD309BB88AC 00000000
Then I doublehashed it with SHA256 and got A4E4CF472E7D300698D8D0851C51A465D90A54EE5E0C6BA02CFDE0E8E0F467F3 which is not what I was looking for.
Could you explain what am I doing wrong?

 

anything