November 2018
Intermediate to advanced
528 pages
13h 21m
English
Content preview from Blockchain By Example
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Creating the transaction
At this level, it's time to create a transaction that spends the received transaction. From the listunspent output, we have the necessary ingredients (prevout_hash and prevout_n) to construct our raw transaction. Let's see how.
First, you need to convert the hello world message into hexadecimal, using an online converter (such as https://codebeautify.org/string-hex-converter). The hexadecimal encoded form will be 68656c6c6f20776f726c64.
Then we have to use the createrawtransaction command, which creates a transaction spending the given inputs and creating new outputs. We have to pass as an argument (from the previous output) an object with the following parameters:
- The txid of one of the available outputs
- The ...
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