November 2019
Beginner to intermediate
408 pages
9h 29m
Korean
Content preview from 밑바닥부터 시작하는 비트코인
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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.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.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.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.
5
장
트랜잭션
153
연습문제
5.3
Tx
클래스의
parse
메서드에서 출력을 파싱하는 코드를 작성하시오.
TxOut
클래스의
parse
메서드도 작성하시오.
5.5
록타임
록타임
Locktime
은 트랜잭션 전파 후 실행을 지연시키는 방법을 제공합니다.
600
,
000
의 록타임 값
을 가지는 트랜잭션은
600
,
001
블록까지는 블록체인에 포함될 수 없습니다. 이것은 원래 빈번
한 거래 상황
high
-
frequency
trade
을 위해 고안됐고 (시퀀스와 록타임 참조 ), 이후 보안상의 문제가
있음이 밝혀졌습니다. 록타임 값이
500
,
000
,
000
보다 같거나 크면 유닉스 타임
6
으로 해석하며
그 이하이면 블록 높이로 해석합니다. 이런 방법으로 트랜잭션은 발생해도 (유닉스 타임이나
블록 높이로 표현된 ) 록타임이 의미하는 시점에 도달하기 전에는 입력이 가리키는 비트코인을
소비할 수 없습니다.
CAUTION
_
록타임 필드가 무시되는 경우
입력에포함된시퀀스값이
ffffffff
이면록타임값은무시됩니다.
이 값은
4
바이트의 리틀엔디언으로 직렬화됩니다 (그림
5
-
8
).
그림
5-8
록타임
록타임의 주요 문제는 록타임에 도달했을 때 트랜잭션의 수신자가 트랜잭션이 유효한지 확신
할 수 없다는 점입니다. 마치 시간이 많이 지나 부도 가능성이 있는 은행 수표와 유사합니다.
6
1970 ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.