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Questions tagged [message-verification]

20 questions
9
votes
3 answers

online tool to play around with ECDSA public keys, message signature verification?

I realize that this question may be borderline bannable because it's asking for suggestions on tools, but it will really help newbies. This online tool allowed me to play around with hashes and to really understand them at a deeper level:…
thanks_in_advance
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7
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2 answers

How can I verify a signed message?

I can send a signed message using the standard client, but if I see a signed message in, say, a forum, how can I verify it? I understand this hasn't yet been implemented in the GUI for the standard client.
Highly Irregular
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7
votes
3 answers

Pseudocode to verify a signed message

Can someone explain or point to some documents with pseudo code that would show me how to verify bitcoin address based on a signature and message. I know how to do this in clients I want to know how to programmatically do it.
user1562
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5
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2 answers

What is the legal money range for a bitcoin transaction?

What is the legal money range for a bitcoin transaction message ? I am guessing that the lower limit is one satoshi but what about an upper limit aside from the maximum block size constraint ?
boussac
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4
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1 answer

How to calculate signature generation, signature verification, transaction verification speed?

I read this post on Bitcoin Scalability. As far as I understand sequence of steps in Bitcoin, simplified version of performing transaction should be following: On Sender's side: Create transaction Generate signature and sign Broadcast the…
Nur
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2
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Proving sendership of transactions

Why does Bitcoin Core, on the message verification tab, say that verifying messages signed by Bitcoin addresses "only proves the signing party receives with the address, it cannot prove sendership of any transaction." Why? And is there a method of…
Geremia
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1 answer

How to verify signed bitcoin messages on my own website?

On my website, I want to be able to verify that messages are signed by a certain bitcoin address, similar to how it's done here. From my research it seems I have to use JSON RPC with some sort of verify_message(signature, message, addrtype)…
Andreas
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When we receive a transaction or BitCoin payment, do we need to verify the message?

I'm new to BitCoin, and as I'm doing my adventure, found a site and gave me some micro BitCoins to test and see how the system works. Now, I finally received a message in my Transactions in my Wallet and it was marked with a '?' in front of the…
Benjie Mangulabnan
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How does OP_CHECKSIG work for Taproot script path spending?

I've been studying all the ways Taproot transactions can be spent and I can get all of them to work except for when script path spending is used and the script is executed. Transaction 0c045625... is a good example. I'll focus on input 0 here. I…
Zephyrus
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Using BitcoinJS - How do you verify a message using a segwit bech32 (bc1…) / P2SH (3…) addresses?

I created a signature from a message using my private key. But how do I verify this signed message using my segwit addresses of 3... or bc1...? How do I verify this using the BitcoinJS library?
Patoshi パトシ
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Why the signature of the same message changes in some wallets, but not all?

Using the "message signing" feature in the Bitcoin and Dash it's static with the same message. Signing the same message with the same private key will result always in the same signature. This behavior is not the same in Peercoin or in the old…
Inkeliz
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How to remove an address used for signing from the key pool?

The message signing feature available in the Bitcoin-Qt client lets me prove that I own a Bitcoin address. I don't wish for this address to ever be used for a future transaction however. Is there a way I can get the private key (and address)…
Stephen Gornick
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SIGHASH_SINGLE with no corresponding output

Transaction 99fc1e5c753459808bac56435b3d45f2fcf0dd73016ea14460d63e9ddf353714 is an interesting example. This transaction has 5 inputs and 1 output. All of the input scripts include 1 public key and 1 signature. They all use the same public key and…
Zephyrus
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0
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1 answer

Relationship of R/S signature in between signed message and DER signature

this time is difficult for me to explain problem i was facing. i realize that R/S signature in DER signature is not match to the 1 in bitcoin signed message? Ok below is my say signed message. -----BEGIN BITCOIN SIGNED…
Atlas Chiew
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What is a simple way to sign a message to verify that you possess the private key for a specific public address?

I need to explain to somebody step by step how to go through the process of signing a message to verify they own the private keys associated with an address containing funds. This is to ensure ownership before a sale is agreed. What is the simplest…
John Murphy
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