Verständnis der Gas-/Transaktionsgebühren

[root_s2yse8vt]

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Ich habe eine Trezor One Cold Wallet, mit Trezor Suite Desktop Suite. Wenn ich BTC sende, werde ich gefragt, ob ich normal oder schnell für die Gebühr wählen soll. Ich wähle immer schnell, und es sagt immer 10min, etwa 5 sat/b. Nach 10min ist es meist noch unbestätigt und nicht abgeschlossen. Erst bei der 15min Marke wurde es laut Anzeige tatsächlich abgebaut! Und erst bei der 30min-Marke war endgültig Schluss. Nach der 10-Minuten-Marke wurden neue Zahlen für normal und schnell angezeigt, nachdem ich auf „bump fee“ geklickt hatte. Aber ich habe nie eine Bump-Fee bezahlt.

* F: Warum wurde 10 Minuten angezeigt, wenn es in Wirklichkeit 30 Minuten dauerte?
* F: Wofür habe ich eigentlich bezahlt, als ich auf FAST – 10 MIN geklickt habe?
* F: Sollte RBF ein- oder ausgeschaltet sein?
* F: Und sollte ich die Transaktion nach dem Senden manuell abschließen?
* F: Warum kann ich nicht alles von Anfang an abschließen?

Ich möchte, dass die BTC innerhalb von 10 Minuten ankommen, wie es gesagt wurde. Die schnelle Option. Das ist mein Endziel.

[matejcik]

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It might help to understand a little bit about how Bitcoin network works 🙂

There’s a pool of unconfirmed transactions waiting to be mined. A single block fits only a limited number of transactions. To generate it, miners pick the juiciest transactions, i.e., those with the highest fees.

Trezor Suite tries to estimate how big a fee to pick, so that (a) the transaction is picked up „soon“, and (b) you don’t overpay. You can always pick a custom fee like 10000 sat/b and you’re basically guaranteed to be in the next block — but that’s usually just burning money.

The „normal“ fee will land you in a block sometime relatively soon. The „fast“ fee _should_ be such that you get a spot in the next block. But it is an estimate, not a guarantee. If too many people just happen to pick „fast“ at the same time, you would need to pick „faster“ to get ahead.

In addition, it takes some time to mine the next block. as /u/brianddk points out, it could be 10 minutes, it could be 1 minute, or it could be 30 minutes. The fee you pick doesn’t affect this time AT ALL.

With that in mind…

> Q: Why did it say 10min, when it really needed 30m?

The answer is obvious. 10 minutes is expected/estimated time. Maybe the estimate was wrong, maybe the block just happened to take too long.

> Q: What did I actually pay for when I clicked FAST – 10 MIN?

You paid to get ahead in the queue. But everyone is allowed to do that, so maybe more people paid to get ahead of _you_.

> Q: Should RBF be on/off?

Sooo… RBF means Replace-by-Fee. If RBF is on, and your transaction is stuck (for more than an hour), you can bump your fee. More generally, you could also send a _different_ transaction instead of the original one. For example, you can _cancel_ your transaction by sending the coins back to yourself.

Finalizing a transaction means replacing it with one where RBF is turned off. It can’t be bumped, replaced, or cancelled anymore.

Some merchants accept unconfirmed transactions — but only if RBF is off. (Otherwise they would accept your transaction, then you would cancel it, and they would be left out cold.) If you’re dealing with that, finalize your transaction or turn RBF off.

As soon as your transaction is mined, RBF doesn’t matter anymore.

> Q: And should I manually finalize the transaction after sending it?

No, unless you know why you need to do it.

> Q: Why doesn’t it let me finalize everything from the beginning?

If you turn off RBF, it’s the same thing as „finalized from the beginning“.

[brianddk]

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Fast means „next block“. Statistics tells me that next-block will ***AVERAGE*** to 10 minutes, but outliers could make that hours. Might be seconds as well. Bitcoin is a statistical machine pieced together with randomness.

[Autor]

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