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Questions tagged [message]

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2
votes
1answer
65 views

I have a 100 character text message and I want to encrypt this message with my bitcoin “PUBLIC KEY” and decrypt it with my private key in Javascript

Are there any javascript libraries that can encrypt a 100 character text message using your bitcoin public key, but only be able to decrypt it with your bitcoin private key? I'm looking to create a ...
0
votes
1answer
29 views

In Ardor, can you send a message with ZERO ignis balance on a brand new account that has never made a transaction before?

I know bundlers can bundle zero fee transactions, but can an Ardor account that is newly created without ever making a transaction send out a message and have it bundled? Or is this not possible as ...
1
vote
1answer
23 views

What is the character limit for sending an Ardor message to another account?

I'm sending a message on the Ardor blockchain to another account, but what is the message character limit?
0
votes
0answers
47 views

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 ...
1
vote
1answer
900 views

How to store arbitrary data in the bitcoin blockchain and how can I differentiate between a transaction an those data?

According to this post, I can store arbitrary data in the blockchain (as the news about "child pornography in the blockchain" tell). Now I want to store "Hello World" in the blockchain. Is there a ...
0
votes
1answer
82 views

Does bitcoind send message headers and payload separately in P2P protocol?

I am connecting to my local bitcoind using TCP and observed the following behavior: I see many messages where only header is given or only part of the payload is attached. Of course, it could be a ...
1
vote
2answers
251 views

Use bitcoin blockchain as a way to send messages to another address purposely setting a 0 fee or a very low fee?

Having that bitcoin nodes are all over the world. Is it possible to broadcast a transaction sending to 20 different addresses with a piece of the message embedded into each address? The goal is to ...
1
vote
0answers
28 views

Sending encryped messages using INSaNe. Messages not sending

I forked INSaNe https://github.com/CryptoCoderz/INSN from github, changed genesis hashes, mined, and sended some coins between two localhost wallets. When i tried to send message from first address to ...
2
votes
2answers
100 views

Encrypted message with nLockTime

I know you can delay a transaction's accepted date by using nLockTime. I'm still looking for the simplest way to generate a transaction with nLockTime, but that's another topic. I'm wondering if ...
2
votes
1answer
63 views

Is there a difference between relaying a transaction and relaying a block?

I was checking the message types of the Bitcoin protocol and got curious whether there is a difference between relayin a transaction and a block, or not? For example, notfound message say that ...
1
vote
1answer
168 views

How does a BIP70 url look like? I want to send my email to the person I'm sending my coins to.

I'm trying to build an application that takes bitcoin and also an email. But when you send bitcoin you cannot send a message attached to it. Supposedly BIP70 solves this problem. How does a BIP70 URI ...
0
votes
1answer
69 views

Adding a note or message to payment?

I want to pay for something using bitcoin, using Bitcoin-Qt, and the seller has asked: Please use the order number as the note/message to receiver info. Where do I add this info? Presumably they ...
2
votes
0answers
124 views

I need to send a message to the person resposible for a specific wallet

Using Multibit, we sent btc to an incorrect wallet address. We have sent a small amount of BTC to this address before, so it is listed in our wallet's Transaction list, but is unfortunately not ...
0
votes
1answer
291 views

Attaching additional data / text message to a Bitcoin transaction?

I'm building an single page web app, where I need to send the users inputted string (email address) along with their bitcoin payment. Say for example I have a single page web app that issues gift ...
2
votes
2answers
1k views

Why DARPA wants blockchain based secure messaging system

DARPA (US Defense Advanced Research Projects Agency) has released a Request for Proposal for a Secure Messaging Platform using a blockchain framework. The following is the Objective paragraph from ...
3
votes
1answer
305 views

How long does it take to propagate a new broadcasted message in the Bitmessage?

When a message has been signed off, it is propagated to the entire network. I would like to know how long does it take "on average"? There are two types of messages, private messages and broadcast ...
0
votes
1answer
284 views

Using the blockchain for providing other services, besides bitcoin transactions

What I have in mind are proof of existence software, than are a kind a non-centralized and virtual notary service. They time-stamp digital information submitting a hash to the blockchain. I know ...
1
vote
0answers
81 views

How to access locally stored inventory data?

I'm looking for objects in the source code of Bitcoin Core that record all block inventories distinguished by their miners - Is there a container that keeps track of blocks on chainActive and stores ...
0
votes
0answers
95 views

Leakage of information about selfish mining - what message is responsible?

A few weeks back I had asked a question about how honest nodes could detect a Selfish Mine Attack and if there were mechanisms that would disclose selfish mining. In a very first step: I've slightly ...
2
votes
2answers
60 views

Two if's before sending an inventory message

Going through main.cpp I couldn't completely understand the purpose of a double barrier coded as if-statements: I'm referring to ... if (pto->setInventoryKnown.count(inv)) and if (pto->...
1
vote
1answer
233 views

Block Broadcasting - Unsolicited Block Push

Can someone, please, direct me to the source code section(s) relevant for an Unsolicited Block Push as described in the Bitcoin Developer Guide? I've been going through main.cpp and searched for the ...
2
votes
1answer
160 views

What is “trickling” in terms of bitcoin?

In the Bitcoin (0.10.0) source code I'm coming across the term "trickle". Could someone please give short but accurate explanations on following instances and tell what they're used for? bool ...
0
votes
1answer
254 views

Amount of block locator hashes in “getblocks” message

How many block locator hashes are sent in a getblocks message? And how distant are these locator hashes from one another?
2
votes
1answer
939 views

Where are the Main network magic bytes stored in bitcoin's source code?

Bitcoin uses F9 BE B4 D9 as its main network magic bytes. I've searched the source but cannot find where these values are stored. Presumably they're computed, but I'm not sure where. Can someone tell ...
2
votes
2answers
387 views

Wallets that support 40 byte message attachment via OP_RETURN? Desktop / Mobile?

I see that many new Bitcoin 2.0 apps are making use of the additional OP_RETURN parameter for attaching data. I see that max limit is 40 bytes or roughly 40 characters? My question now regarding ...
3
votes
1answer
250 views

Does the bitcoin URI message parameter have character limits?

Is there a limit to how many characters are allowed in the message parameter of a BIP21 URI? I tried searching on the subject, but found nothing about it.
1
vote
1answer
809 views

Blockchain transaction message length limit

When I perform a transaction on the blockchain, I can add a message to the transaction, which will then exist forever in the blockchain. Say for example I wanted to use the blockchain to store ...
1
vote
1answer
185 views

how to concat our website url in our bit coin transaction in blockchain send api

Hi im using block chain send api in my web application, and it is working fine without any issues. My requirements is when the payment is done thought blockchain send api, is it possible to concat our ...
2
votes
1answer
141 views

Initial Connection to Bitcoin

If this is the first connection of a new client to the network, I would like to know after the exchange of version & verack messages from both peers, which message is exchanged. I guess every time ...
3
votes
1answer
386 views

GetAddr message structure

My question is if getaddr consists of message header and if it has some payload, possibly an addr_recv and addr_from like version message. Wiki is pretty basic on this spot.
3
votes
1answer
654 views

Inv message structure

I am reading the Bitcoin wiki, and I see the inv message structure. I see it has a counter field for the objects and an inventory field. This inventory field has a list of objects (transactions or ...
1
vote
0answers
215 views

wireshark packet analysis missing checksum in version msg

I'm trying to send a raw bitcoin transaction through a raw socket connection in python. To debug I'm using wireshark to sniff the packets. Wireshark figures out that the packet is for Bitcoin and ...
0
votes
0answers
37 views

Using a blockchain type system for different purposes [duplicate]

I was wondering, not that I really took the time to investigate much yet but.... Wouldn't it be possible, to do many different things, with the blockchain concept? Maybe i could build a "browser" ...
0
votes
1answer
232 views

Sending getblocks message but not getting inv message response

I am building my own bitcoin client, and I have most of the protocol working from https://en.bitcoin.it/wiki/Protocol_Specification. I successfully make a connection with the version and verack ...
2
votes
1answer
3k views

Need help! Initial sync not progressing, BTC sent already, + warning message

Please help! I look forward to your intelligent caring responses. Here is the situation: I'm trying to do the initial synchronizing of Bitcoin-QT, which hasn't progressed in 14 hours, and: - ...
7
votes
3answers
2k views

Using the bitcoin wallet PKI for message encryption

Is it possible for a message sender to encrypt a message string with a receiver's public wallet address, email this ciphertext to the receiver and then have the receiver decrypt the message using ...
8
votes
2answers
366 views

Ramifications of illegal content in transaction messages?

Would it be possible to make using Bitcoin illegal by posting child porn or similar highly illegal content in the message of a transaction? There are methods for having 'thin clients' that don't ...
4
votes
2answers
2k views

How does blockchain.info associate a message with an address? [duplicate]

I randomly encountered this address on blockchain.info: https://blockchain.info/address/1CzpppydnGN5dQN7iBnZbmm5RXreu7hrHW and at the top a message appears presumably describing the owner of the ...
6
votes
2answers
5k views

Is it possible to send a message to a bitcoin address? how?

Say I have an online store that accepts bitcoins and want people to be able to contact me through my wallet, because that is ultimately the entity involved in an hypothetical trade. Can that be done? ...
7
votes
3answers
3k views

Can I send message inside the transactions script?

I would like to send transactions with messages as described in the wiki. In Transaction with slightly changed script is never relayed, someone answered that non-standard transactions are not relaid ...
3
votes
2answers
847 views

Does the public key associated with an address become part of the public record after it has been used to spend?

Since bitcoin addresses are hashes of public keys and not public keys as such, if one wanted to craft a message that could be decrypted by the generator of an address, that can't be done just with an ...
8
votes
1answer
1k views

What method does My Wallet use to encode messages in the blockchain?

What kind of protocol does My Wallet use?
5
votes
1answer
209 views

How does Bitcoin decide which Alert messages to forward?

The Bitcoin protocol lists an Alert message that in the Standard Client is displayed to all users. How does the Standard Client decide which messages to forward and display, and which to ignore? Does ...
3
votes
2answers
783 views

In which Block was Len Sassaman memorialised?

It has been mentioned a couple times here and there that Len Sassaman was memorialised somewhere in the Block Chain. I was able to find a dump of of the tribute to him, but I can't seem to find where ...