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https://github.com/bitcoinbook/bitcoinbook
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Made changes to ch03.asciidoc
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myarbrough@oreilly.com
parent
3bbd43370a
commit
6e45f36260
@ -866,13 +866,16 @@ We see that the transaction +9ca8f9...+ created an output (with vout index 0) as
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First, let's look at the specific output in more detail. We use +gettxout+ to get the details of this unspent output. Transaction outputs are always referenced by txid and vout, and these are the parameters we pass to +gettxout+:
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----
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$ bitcoin-cli gettxout 9ca8f969bd3ef5ec2a8685660fdbf7a8bd365524c2e1fc66c309acbae2c14ae3 0
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----
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[source,json]
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----
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++++
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<screen>
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$ bitcoin-cli gettxout 9ca8f969bd3ef5ec2a8685660fdbf7a8bd365524c2e1fc66c309ac<?pdf-cr?>bae2c14ae3 0
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</screen>
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++++
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++++
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<screen language="json">
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{
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"bestblock" : "0000000000000001405ce69bd4ceebcdfdb537749cebe89d371eb37e13899fd9",
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"bestblock" : "0000000000000001405ce69bd4ceebcdfdb537749cebe89d371eb37e13<?pdf-cr?>899fd9",
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"confirmations" : 7,
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"value" : 0.05000000,
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"scriptPubKey" : {
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@ -888,7 +891,8 @@ $ bitcoin-cli gettxout 9ca8f969bd3ef5ec2a8685660fdbf7a8bd365524c2e1fc66c309acbae
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"version" : 1,
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"coinbase" : false
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}
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----
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</screen>
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++++
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What we see here is the output that assigned 50 millibits to our address +1hvz...+. To spend this output we will create a new transaction. First, let's make an address to which we will send the money:
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@ -902,26 +906,30 @@ We will send 25 millibits to the new address +1LnfTn...+ we just created in our
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We use +createrawtransaction+ to create this transaction. As parameters to +createrawtransaction+ we provide the transaction input (the 50 millibit unspent output from our confirmed transaction) and the two transaction outputs (money sent to the new address and change sent back to the previous address):
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----
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$ bitcoin-cli createrawtransaction '[{"txid" : "9ca8f969bd3ef5ec2a8685660fdbf7a8bd365524c2e1fc66c309acbae2c14ae3", "vout" : 0}]' '{"1LnfTndy3qzXGN19Jwscj1T8LR3MVe3JDb": 0.025, "1hvzSofGwT8cjb8JU7nBsCSfEVQX5u9CL": 0.0245}'
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++++
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<screen language="json">
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$ bitcoin-cli createrawtransaction '[{"txid" : "9ca8f969bd3ef5ec2a8685660fdbf<?pdf-cr?>7a8bd365524c2e1fc66c309acbae2c14ae3", "vout" : 0}]' '{"1LnfTndy3qzXGN19Jwscj1<?pdf-cr?>T8LR3MVe3JDb": 0.025, "1hvzSofGwT8cjb8JU7nBsCSfEVQX5u9CL": 0.0245}'
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0100000001e34ac1e2baac09c366fce1c2245536bda8f7db0f6685862aecf53ebd69f9a89c0000000000ffffffff02a0252600000000001976a914d90d36e98f62968d2bc9bbd68107564a156a9bcf88ac50622500000000001976a91407bdb518fa2e6089fd810235cf1100c9c13d1fd288ac00000000
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----
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0100000001e34ac1e2baac09c366fce1c2245536bda8f7db0f6685862aecf53ebd69f9a89c000<?pdf-cr?>0000000ffffffff02a0252600000000001976a914d90d36e98f62968d2bc9bbd68107564a156a<?pdf-cr?>9bcf88ac50622500000000001976a91407bdb518fa2e6089fd810235cf1100c9c13d1fd288ac0<?pdf-cr?>0000000
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</screen>
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++++
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The +createrawtransaction+ command produces a raw hex string that encodes the transaction details we supplied. Let's confirm everything is correct by decoding this raw string using the +decoderawtransaction+ command:
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----
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$ bitcoin-cli decoderawtransaction 0100000001e34ac1e2baac09c366fce1c2245536bda8f7db0f6685862aecf53ebd69f9a89c0000000000ffffffff02a0252600000000001976a914d90d36e98f62968d2bc9bbd68107564a156a9bcf88ac50622500000000001976a91407bdb518fa2e6089fd810235cf1100c9c13d1fd288ac00000000
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----
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[source,json]
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----
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++++
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<screen>
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$ bitcoin-cli decoderawtransaction 0100000001e34ac1e2baac09c366fce1c2245536bd<?pdf-cr?>a8f7db0f6685862aecf53ebd69f9a89c0000000000ffffffff02a0252600000000001976a914d<?pdf-cr?>90d36e98f62968d2bc9bbd68107564a156a9bcf88ac50622500000000001976a91407bdb518fa<?pdf-cr?>2e6089fd810235cf1100c9c13d1fd288ac00000000
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++++
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++++
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<screen language="json">
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{
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"txid" : "0793299cb26246a8d24e468ec285a9520a1c30fcb5b6125a102e3fc05d4f3cba",
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"txid" : "0793299cb26246a8d24e468ec285a9520a1c30fcb5b6125a102e3fc05d4f3cb<?pdf-cr?>a",
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"version" : 1,
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"locktime" : 0,
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"vin" : [
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{
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"txid" : "9ca8f969bd3ef5ec2a8685660fdbf7a8bd365524c2e1fc66c309acbae2c14ae3",
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"txid" : "9ca8f969bd3ef5ec2a8685660fdbf7a8bd365524c2e1fc66c309acb<?pdf-cr?>ae2c14ae3",
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"vout" : 0,
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"scriptSig" : {
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"asm" : "",
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@ -935,7 +943,7 @@ $ bitcoin-cli decoderawtransaction 0100000001e34ac1e2baac09c366fce1c2245536bda8f
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"value" : 0.02500000,
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"n" : 0,
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"scriptPubKey" : {
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"asm" : "OP_DUP OP_HASH160 d90d36e98f62968d2bc9bbd68107564a156a9bcf OP_EQUALVERIFY OP_CHECKSIG",
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"asm" : "OP_DUP OP_HASH160 d90d36e98f62968d2bc9bbd68107564a15<?pdf-cr?>6a9bcf OP_EQUALVERIFY OP_CHECKSIG",
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"hex" : "76a914d90d36e98f62968d2bc9bbd68107564a156a9bcf88ac",
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"reqSigs" : 1,
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"type" : "pubkeyhash",
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@ -948,7 +956,7 @@ $ bitcoin-cli decoderawtransaction 0100000001e34ac1e2baac09c366fce1c2245536bda8f
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"value" : 0.02450000,
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"n" : 1,
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"scriptPubKey" : {
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"asm" : "OP_DUP OP_HASH160 07bdb518fa2e6089fd810235cf1100c9c13d1fd2
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"asm" : "OP_DUP OP_HASH160 07bdb518fa2e6089fd810235cf1100c9c1<?pdf-cr?>3d1fd2
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OP_EQUALVERIFY OP_CHECKSIG",
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"hex" : "76a91407bdb518fa2e6089fd810235cf1100c9c13d1fd288ac",
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"reqSigs" : 1,
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@ -960,7 +968,8 @@ $ bitcoin-cli decoderawtransaction 0100000001e34ac1e2baac09c366fce1c2245536bda8f
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}
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]
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}
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----
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</screen>
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++++
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That looks correct! Our new transaction "consumes" the unspent output from our confirmed transaction and then spends it in two outputs, one for 25 millibits to our new address and one for 24.5 millibits as change back to the original address. The difference of 0.5 millibits represents the transaction fee and will be credited to the miner who finds the block that includes our transaction.
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@ -971,18 +980,21 @@ As you might notice, the transaction contains an empty +scriptSig+ because we ha
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((("wallets","signing transactions with")))An encrypted wallet must be unlocked before a transaction is signed because signing requires access to the secret keys in the wallet.
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====
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----
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++++
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<screen>
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$ bitcoin-cli walletpassphrase foo 360
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$ bitcoin-cli signrawtransaction 0100000001e34ac1e2baac09c366fce1c2245536bda8f7db0f6685862aecf53ebd69f9a89c0000000000ffffffff02a0252600000000001976a914d90d36e98f62968d2bc9bbd68107564a156a9bcf88ac50622500000000001976a91407bdb518fa2e6089fd810235cf1100c9c13d1fd288ac00000000
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----
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[source,json]
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----
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$ bitcoin-cli signrawtransaction 0100000001e34ac1e2baac09c366fce1c2245536bda8<?pdf-cr?>f7db0f6685862aecf53ebd69f9a89c0000000000ffffffff02a0252600000000001976a914d90<?pdf-cr?>d36e98f62968d2bc9bbd68107564a156a9bcf88ac50622500000000001976a91407bdb518fa2e<?pdf-cr?>6089fd810235cf1100c9c13d1fd288ac00000000
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</screen>
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++++
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++++
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<screen language="json">
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{
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"hex" : "0100000001e34ac1e2baac09c366fce1c2245536bda8f7db0f6685862aecf53ebd69f9a89c000000006a47304402203e8a16522da80cef66bacfbc0c800c6d52c4a26d1d86a54e0a1b76d661f020c9022010397f00149f2a8fb2bc5bca52f2d7a7f87e3897a273ef54b277e4af52051a06012103c9700559f690c4a9182faa8bed88ad8a0c563777ac1d3f00fd44ea6c71dc5127ffffffff02a0252600000000001976a914d90d36e98f62968d2bc9bbd68107564a156a9bcf88ac50622500000000001976a91407bdb518fa2e6089fd810235cf1100c9c13d1fd288ac
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00000000",
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"hex" : "0100000001e34ac1e2baac09c366fce1c2245536bda8f7db0f6685862aecf53e<?pdf-cr?>bd69f9a89c000000006a47304402203e8a16522da80cef66bacfbc0c800c6d52c4a26d1d86a54<?pdf-cr?>e0a1b76d661f020c9022010397f00149f2a8fb2bc5bca52f2d7a7f87e3897a273ef54b277e4af<?pdf-cr?>52051a06012103c9700559f690c4a9182faa8bed88ad8a0c563777ac1d3f00fd44ea6c71dc512<?pdf-cr?>7ffffffff02a0252600000000001976a914d90d36e98f62968d2bc9bbd68107564a156a9bcf88<?pdf-cr?>ac50622500000000001976a91407bdb518fa2e6089fd810235cf1100c9c13d1fd288ac00000000",
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"complete" : true
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}
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----
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</screen>
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++++
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The +signrawtransaction+ command returns another hex-encoded raw transaction. We decode it to see what changed, with +decoderawtransaction+:
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