November 2019
Beginner to intermediate
408 pages
9h 29m
Korean
Content preview from 밑바닥부터 시작하는 비트코인
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11
장
단순 지급 검증
281
self.timestamp = timestamp
self.bits = bits
self.nonce = nonce
self.tx_hashes = tx_hashes
➊ 블록을 초기화할 때 트랜잭션 해시값 리스트를 파라미터로 넘겨줄 수 있게 합니다. 트랜잭
션 해시값은 순서 리스트입니다.
풀 노드는 모든 트랜잭션이 주어지면 그 해시값으로부터 머클루트를 계산할 수 있고, 계산된
머클루트와 헤더의 머클루트 정보가 동일한지 확인할 수 있습니다.
연습문제
11. 4
Block
클래스에서
validate
_
merkle
_
root
메서드를 작성하시오.
11.7
머클트리 활용하기
이제 머클트리가 어떻게 구성되는지 이해했으므로 이를 토대로 포함증명을 만들거나 확인할
수 있습니다. 라이트 노드는 특정 트랜잭션이 블록에 포함됐는지 확인하기 위해 모든 트랜잭션
을 알 필요가 없습니다 (그림
11
-
2
).
라이트 노드가 어떤 블록에서
2
개의 트랜잭션에 관심이 있을 때, 즉 이 두 트랜잭션이 블록에
실제로 존재하는지 알고자 합니다. [그림
11
-
2
]에서 녹색 상자에
H
K
와
H
N
으로 표시된 해시값
이 바로 이 두 트랜잭션 해시값입니다. 풀 노드는 파란 상자에
H
ABCDEFGH
,
H
IJ
,
H
L
,
H
M
,
H
OP
로
표시된 모든 해시값으로 포함증명을 생성하여 라이트 노드에게 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.