1 vote
122 views

What's max possible tx/second right now?

What's max possible tx/second right now, if we use all the latest Bitcoin tech multi-sig, MAST + Taproot, without increasing block size? Let's say our goal is simple tx finality and 10b utxo. How do ...
9k views

What is the maximum number of inputs/outputs a transaction can have?

Is there a maximum recommended number of inputs/outputs for each transaction? I was scripting a faucet and wasn't sure whether to payout in one transaction to all addresses or split them into groups ...
1 vote
71 views

How to understand the fees of Bitcoin transfer?

Right now on https://bitcoinfees.net , it is showing the following chart: So it is show 55 - 57 sat / vB is needed for the transfer to take place in about an hour. How do we interpret this chart? For ...
171 views

Estimating virtual bytes of a transaction seems circular

I'm sorry if this has been answered before, but I haven't found anyone really bring this up. I am trying to construct a PSBT, which assumes a fixed feerate and a fixed amount to send to some address. ...
285 views

What is the way that fee is calculated in post-segwit bitcoin?

In pre-segwit bitcoin, process of calculating transaction fee was easy. Actually everything was based on the fact that the byte has its own value/price (estimated by network) and then fee is obtained ...
487 views

What is the purpose of P2WPKH-P2SH?

When I ask the google what is the purpose of P2WPKH nested in P2SH, it says the following: This allows the user to send funds to a SegWit (Segregated Witness) address using a non-SegWit transaction, ...
1 vote
155 views

How to get transaction size as byte before send with Python's bit library?

I am using bit library to make a Bitcoin transaction. I can use methods like this: key.create_transaction([('1Archive1n2C579dMsAu3iC6tWzuQJz8dN', 190, 'jpy')]) or key.send([('...
41 views

Are fees smaller to transact to addresses generated from a zpub master public keys compared to xpub?

Will it affect the fees in any way when one sends money to an address generated from zpub master public key compared the xpub? What might also be part of this question is, understanding whether it is ...
71 views

Transfering btc from multiple btc addresses to a single btc address, estimating transaction size

Good morning, for the last few months I have been using the following formula to calculate transaction fee based on the transaction size when sending BTC from one address to multiple addresses(or ...
13k views

Is there a difference between bytes and virtual bytes (vbytes)?

In an Optech newsletter, size is referred to using vbytes. Is there a difference between vbytes and bytes? If so, what is the difference?
196 views

Where are signatures stored in segwit, and why are addresses different?

So I'm researching SegWit, and as far as I'm aware, it re-organizes the data structure of transactions so that the ECDSA signature is not included in the preimage of the Tx Hash. I am also aware that ...
2k views

How does SegWit reduce transaction size, when the signature is simply moved to another part of the transaction?

This video explains that the signature is moved out of the input section and moved to the new one called the witness. From what I can tell, the witness signature is still contained in this transaction ...
1k views

How big is the input of a P2PKH transaction?

How many bytes does a P2PKH input have? I'm finding a few different numbers: Why does the default miner implementation use pay-to-pubkey? states: push + sig + push + key = 1 + 72 + 1 + 61 = 139 ...
1k views

Does the transaction fee depend on the transferred amount?

Do transaction fees depend on the amount of bitcoin sent? On what factors do fees depends?