Mastering Bitcoin

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Mastering Bitcoin ( mastering-bitcoin )

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Finally, the command getbalance will show the total balance of the wallet, adding up all transactions confirmed with at least minconf confirmations: $ bitcoin-cli getbalance 0.05000000 If the transaction has not yet confirmed, the balance returned by getbalance will be zero. The configuration option “minconf” deter‐ mines the minimum number of confirmations that are required be‐ fore a transaction shows in the balance. Exploring and decoding transactions Commands: gettransaction, getrawtransaction, decoderawtransaction We’ll now explore the incoming transaction that was listed above using the gettran saction command. We can retrieve a transaction by its transaction hash, shown at txid, above with the gettransaction command: $ bitcoin-cli gettransaction 9ca8f969bd3ef5ec2a8685660fdbf7a8bd365524c2e1fc66c309acbae2c14ae3 { "amount" : 0.05000000, "confirmations" : 0, "txid" : "9ca8f969bd3ef5ec2a8685660fdbf7a8bd365524c2e1fc66c309acbae2c14ae3", "time" : 1392660908, "timereceived" : 1392660908, "details" : [ { "account" : "", "address" : "1hvzSofGwT8cjb8JU7nBsCSfEVQX5u9CL", "category" : "receive", "amount" : 0.05000000 } ] } Transaction IDs are not authoritative until a transaction has been confirmed. Absence of a transaction hash in the blockchain does not mean the transaction was not processed. This is known as “transac‐ tion malleability”, as transaction hashes can be modified prior to confirmation in a block. After confirmation, the txid is immutable and authoritative. The transaction form shown above with the command gettransaction is the simplified form. To retrieve the full transaction code and decode it we will use two commands, getrawtransaction and decoderawtransaction. First, getrawtransaction takes the Using Bitcoin Core’s JSON-RPC API from the command line | 45

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