Weder sicher, ob ich verstehe, was Sie Fragen, wissen Sie nicht, ob Ihre Frage ist eine gute Passform für SE, aber es gibt bereits mehrere Android-wallets gibt, die es ermöglichen, Sie zu empfangen und zu senden Mitteln. Sie müssen Kontakt mit der person/Firma, die haben sollten, senden Sie 2x68-Dollar in bitcoins. Sie machte zwei Transaktionen, aber beide versuchen, zu verwenden "die gleichen bitcoins", um zu senden Ihnen. Da ist eine doppelte ausgeben, nur einen von diesen Transaktionen sind in der Blockchain. Der andere wird nie zu aufwendbare. Hmm, ich glaube nicht, dass eine Adressen, die offline waren, konnte verwendet werden, wie eine route hop.. ist nicht routing über einen offline-Adresse, die ein ähnliches problem zu senden, um eine offline-Adresse? Der Begriff "trustless" ist marketing. Der Begriff ist in der Kryptographie ist "nicht vertrauenswürdig". Wie hat dein Freund es bekommen? Als der 0.6.0, komprimiert public-key aktiviert werden. Danke Pieter. Sie sagen, es ist nicht unzumutbar.Hast du irgendwelche zahlen zur Quantifizierung der Wahrscheinlichkeit, dass der zweite block wird später auf längere Kette? Intuitiv, so scheint es mir, dass dies ein eher seltener Fall und so Frage ich mich, ob es sich lohnt, Sie verbringen Ressourcen auf den Download und teilweise die überprüfung der block. Es ist meine intuition gut ist oder nicht? Wenn es sich um eine seltene, sagen wir mal in der Größenordnung von 5%, sind Sie versucht zu sagen, dass die Ressourcen, die ausgegeben werden, zu vernachlässigen und so ist es immer noch Wert?

Alle Punkte, die von Nefario sind spot-on. Zusätzlich zu diesen, hier sind einige Bitcoin-spezifische Vorschläge von Camp BX's Erfahrung so weit:

1) Verwenden Sie testnet. Testnet ist eine ausgezeichnete Ressource, die leider nicht so viel verwenden, wie es sollte außerhalb der Kern-Entwickler-team. Stellen Sie sicher, dass Sie starten Sie Ihr Projekt auf testnet, und testen Sie alle wichtigen nachfolgenden Versionen gibt es auch.

2) Geschenke sind überbewertet.
Wenn Sie möchten, um Fehler zu finden in Ihrer Bitcoin-Projekt, verlassen Sie sich nicht auf die Prämien. Führen Sie L&P-Tests, Unit-Tests, System-Tests auf allen Ihren code ein und mieten Sie professionelle security-Auditoren, wenn möglich.

3) die Verwendung der 64-bit-Architektur (Dies kann nicht für alle Projekte gelten.) Viele Entwickler verwenden eine alte 32-bit-server für Test-und 64-bit-system als Produktions-server. Es lohnt sich die extra-Investition, um sicherzustellen, dass Ihre test-server ist ein 64-bit-Architektur sowie.

Hoffe, das hilft.

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