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Transactions are signed messages carrying out the transfer or generation of bitcoins. They are broadcast throughout the Bitcoin network and, if accepted, integrated in the blockchain.

2 votes
Accepted

Delegating the creation of a transaction

Edit to answer third point also in an edit from the OP: If you are suggesting that you can possibly drop off signed transactions everywhere using the same bitcoins to create a double-spend, you would also … I think you ought to have a look at how transactions are actually constructed, as it is not as simple as saying that "I have a balance of n bitcoins and I spend x bitcoins". …
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1 vote

Transaction I never made

The earlier of the two transactions (green) is showing several previous addresses, paying several others. …
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1 vote

How to stream transactions on the network

The standard bitcoin QT client is a node, which means that it receives the inventory of all transactions and relays all valid transactions it requests to receive (from the inventories). … If you are looking to essentially print all transactions that are being relayed through your node, I think this would be pretty straitforward using something like Node.js or just running a continuous regular …
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0 votes

How does a wallet use unconfirmed outputs as inputs after unconfirmed transactions?

My understanding is that technically the first confirmation is against your own blockchain copy. So although the transaction may not be confirmed in a block, the client is aware that this change tran …
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-1 votes

Is transaction malleability an issue when receiving payments?

Neither of these transactions will ever enter the blockchain. …
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2 votes
Accepted

Correlated raw transactions' input/output chaining

These are not mentioned and in fact by making two (or possibly four) transactions you are incurring up to 4x the bitcoin network transaction fees. … This is one of the main reasons why (from a business perspective) you should not split the transactions up ie it is more expensive and who is going to wear the costs? The charity? the merchant? …
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1 vote

Issue after importing private key to MultiBit

"I have set correct date of the transaction in the import file during import" - I don't think you need to do this. I believe the date is not the date of the transaction, but the date the wallet was …
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10 votes

Can a Bitcoin transaction have the same address for input and output?

Yes it can. See this transaction below. https://blockchair.com/bitcoin/transaction/b345c51064074f5d6c0e11187326567765eb4fa3236ca1be440ccb5745775238
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