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1
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1answer
31 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
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1answer
29 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
98 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 ...
0
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0answers
28 views

GetBlocks Message containing Transaction Hashes

I'm sending a getBlocks Message which returns me an Inv Message containing up to 500 block-hashes as specified in the Protocol Specification. The Specification says: The maxium count for a an ...
1
vote
1answer
43 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.
1
vote
1answer
49 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
22 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
36 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
64 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 ...
1
vote
1answer
2k 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: - ...
3
votes
2answers
356 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 ...
3
votes
2answers
127 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 ...
3
votes
2answers
907 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 ...
2
votes
2answers
1k 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? ...
4
votes
3answers
1k 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
525 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 ...
5
votes
1answer
945 views

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

What kind of protocol does My Wallet use?
5
votes
1answer
130 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
448 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 ...