October 2024
Intermediate to advanced
396 pages
12h 18m
German
Content preview from Bitcoin - Grundlagen und ProgrammierungBecome 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,
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KAPITEL 9
Transaktionsgebühren
Die von Alice in Kapitel 8 erzeugte digitale Signatur beweist nur, dass sie ihren privaten Schlüssel kennt und die Bob bezahlende Transaktion bestätigt. Sie könnte noch eine weitere Signatur erzeugen, die stattdessen eine Carol bezahlende Transaktion bestätigt – eine Transaktion, die den gleichen Output (Bitcoins) einlöst, den sie auch für die Zahlung an Bob genutzt hat. Wir haben es nun mit kollidierenden Transaktionen zu tun, weil eine Transaktion, die einen bestimmten Output einlöst, in die gültige Blockchain mit dem höchsten Proof-of-Work aufgenommen wird. Diese Blockchain wird von Full Nodes verwendet, um zu ermitteln, welche Schlüssel welche Bitcoins kontrollieren.
Um sich selbst vor kollidierenden Transaktionen ...
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