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17_4_Accessing_Bitcoind_with_Python.md
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@ -11,9 +11,9 @@ You can check this by running:
`$ python3 --version` `$ python3 --version`
If it returns a version number (e.g., `3.7.3` or `3.8.3`) then you have python3 installed. Continue on to ["Setting Up BitcoinRPC"](17_4_Accessing_Bitcoind_with_Python.md#setting-up-bitcoinrpc). If it returns a version number (e.g., `3.7.3` or `3.8.3`) then you have python3 installed.
However, if you somehow do not have Python installed, you'll need build it from source as follows: However, if you somehow do not have Python installed, you'll need build it from source as follows. Please see ["Building Python from Source"](17_4_Accessing_Bitcoind_with_Python.md#synopsis-building-python-from-source) before continuing.
### Setting Up BitcoinRPC ### Setting Up BitcoinRPC
@ -127,7 +127,7 @@ print("---------------------------------------------------------------\n")
You can retrieve [the src code](src/17_4_getinfo.py) and run it with `python3`: You can retrieve [the src code](src/17_4_getinfo.py) and run it with `python3`:
``` ```
$ python3 blockinfo.py $ python3 getinfo.py
--------------------------------------------------------------- ---------------------------------------------------------------
Block Count: 1831106 Block Count: 1831106
--------------------------------------------------------------- ---------------------------------------------------------------
@ -156,11 +156,9 @@ First 10 transactions:
--------------------------------------------------------------- ---------------------------------------------------------------
``` ```
---ETH--- ## Looking Up Funds
### Get Wallet Info You can similarly retrieve your wallet's information with the `getwalletinfo` RP:
Let's get details of our wallet:
```py ```py
wallet_info = rpc_client.getwalletinfo() wallet_info = rpc_client.getwalletinfo()
@ -192,31 +190,23 @@ Wallet Info:
'walletname': '', 'walletname': '',
'walletversion': 169900} 'walletversion': 169900}
--------------------------------------------------------------- ---------------------------------------------------------------
``` ```
Other informational commands such as `getblockchaininfo`, `getnetworkinfo`, `getpeerinfo`, and `getblockchaininfo` will work similarly.
Try out other commands like `getblockchaininfo`, `getnetworkinfo`, `getpeerinfo`, `getblockchaininfo`, etc. Other commands can give you specific information on select elements within your wallet.
### Retrieving an Array
``` The `listtransactions` RPC allows you to look at the most recent 10 transactions on your system (or some arbitrary set of transactions using the `count` and `skip` arguments). It shows how an RPC command can return an easy-to-manipulate array:
## Exploring an Address
How about getting a list of all the transactions of your address? Type the following and see the transaction history of your address:
```py ```py
track_address = "<your address>"
tx_list = rpc_client.listtransactions() tx_list = rpc_client.listtransactions()
address_tx_list = [] pprint(tx_list)
for tx in tx_list:
if tx['address'] == track_address:
address_tx_list.append(tx)
pprint(address_tx_list)
``` ```
## Exploring a UTXO ### Exploring a UTXO
To get details of a UTXO, we first need to get its `hex` id, which we can then decode using `decoderawtransaction`. You can similarly use `listunspent` to get an array of UTXOs on your system:
```py ```py
print("Exploring UTXOs") print("Exploring UTXOs")
@ -226,12 +216,21 @@ print("Utxos: ")
print("-----") print("-----")
pprint(utxos) pprint(utxos)
print("------------------------------------------\n") print("------------------------------------------\n")
```
In order to manipulate an array like the one returned from `listtransactions` or `listunpsent`, you just grab the appropriate item from the appropriate element of the array:
```
## Select a UTXO - first one selected here ## Select a UTXO - first one selected here
utxo_txid = utxos[0]['txid'] utxo_txid = utxos[0]['txid']
## Get UTXO Hex ```
For `listunspent`, you get a `txid`. You can retrieve information about it with `gettransaction`, then decode that with `decoderawtransaction`:
```
utxo_hex = rpc_client.gettransaction(utxo_txid)['hex'] utxo_hex = rpc_client.gettransaction(utxo_txid)['hex']
## Get tx Details
utxo_tx_details = rpc_client.decoderawtransaction(utxo_hex) utxo_tx_details = rpc_client.decoderawtransaction(utxo_hex)
print("Details of Utxo with txid:", utxo_txid) print("Details of Utxo with txid:", utxo_txid)
print("---------------------------------------------------------------") print("---------------------------------------------------------------")
print("UTXO Details:") print("UTXO Details:")
@ -240,6 +239,101 @@ pprint(utxo_tx_details)
print("---------------------------------------------------------------\n") print("---------------------------------------------------------------\n")
``` ```
This code is available at [walletinfo.py](src/17_4_walletinfo.py).
```
$ python3 walletinfo.py
---------------------------------------------------------------
Wallet Info:
-----------
{'avoid_reuse': False,
'balance': Decimal('0.01031734'),
'hdseedid': 'da5a1b058deb9e51ecffef1b0ddc069a5dfb2c5f',
'immature_balance': Decimal('0E-8'),
'keypoololdest': 1596567843,
'keypoolsize': 1000,
'keypoolsize_hd_internal': 999,
'paytxfee': Decimal('0E-8'),
'private_keys_enabled': True,
'scanning': False,
'txcount': 6,
'unconfirmed_balance': Decimal('0E-8'),
'walletname': '',
'walletversion': 169900}
---------------------------------------------------------------
Utxos:
-----
[{'address': 'mv9cjEnS2o1EygBMdrz99LzhM8KeEMoXDg',
'amount': Decimal('0.00001000'),
'confirmations': 1180,
'desc': "pkh([ce0c7e14/0'/0'/25']02d0541b9211aecd25913f7fdecfc1b469215fa326d52067b1b3f7efbd12316472)#n06pq9q5",
'label': '-addresstype',
'safe': True,
'scriptPubKey': '76a914a080d1a10f5e7a02d0a291f118982ed19e8cfcd788ac',
'solvable': True,
'spendable': True,
'txid': '84207ffec658ae29ad1fdd330d8a13613303c3cf281ce628fadeb7636ffb535e',
'vout': 0},
{'address': 'tb1qrcf8c29966tvqxhwrtd2se3rj6jeqtll3r46a4',
'amount': Decimal('0.01029734'),
'confirmations': 1180,
'desc': "wpkh([ce0c7e14/0'/1'/26']02c581259ba7e6aef6d7ea23adb08f7c7f10c4c678f2e097a4074639e7685d4805)#j3pctfhf",
'safe': True,
'scriptPubKey': '00141e127c28a5d696c01aee1adaa8662396a5902fff',
'solvable': True,
'spendable': True,
'txid': '84207ffec658ae29ad1fdd330d8a13613303c3cf281ce628fadeb7636ffb535e',
'vout': 1},
{'address': 'mzDxbtYY3LBBBJ6HhaBAtnHv6c51BRBTLE',
'amount': Decimal('0.00001000'),
'confirmations': 1181,
'desc': "pkh([ce0c7e14/0'/0'/23']0377bdd176f985b4af2f6bdbb22c2925b6007b6c07ba171f75e65990c002615e98)#3y6ef6vu",
'label': '-addresstype',
'safe': True,
'scriptPubKey': '76a914cd339342b06042bb986a45e73d56db46acc1e01488ac',
'solvable': True,
'spendable': True,
'txid': '1679bee019c61608340b79810377be2798efd4d2ec3ace0f00a1967af70666b9',
'vout': 1}]
------------------------------------------
Details of Utxo with txid: 84207ffec658ae29ad1fdd330d8a13613303c3cf281ce628fadeb7636ffb535e
---------------------------------------------------------------
UTXO Details:
------------
{'hash': '0c6c27f58f122329bbc53a91f290b35ce23bd2708706b21a04cdc387dc8e2fd9',
'locktime': 1831103,
'size': 225,
'txid': '84207ffec658ae29ad1fdd330d8a13613303c3cf281ce628fadeb7636ffb535e',
'version': 2,
'vin': [{'scriptSig': {'asm': '', 'hex': ''},
'sequence': 4294967294,
'txid': '1679bee019c61608340b79810377be2798efd4d2ec3ace0f00a1967af70666b9',
'txinwitness': ['3044022014b3e2359fb46d8cbc4cd30fa991b455edfa4b419a4c64a53fcdfc79e3ca89db022010cefc3268bc252d55f1982c426328b709b47d02332def9e2efb3b12de2cf0d301',
'0351b470e87b44e8e9607acf09b8d4543c51c93c17dc741176319e60202091f2be'],
'vout': 0}],
'vout': [{'n': 0,
'scriptPubKey': {'addresses': ['mv9cjEnS2o1EygBMdrz99LzhM8KeEMoXDg'],
'asm': 'OP_DUP OP_HASH160 '
'a080d1a10f5e7a02d0a291f118982ed19e8cfcd7 '
'OP_EQUALVERIFY OP_CHECKSIG',
'hex': '76a914a080d1a10f5e7a02d0a291f118982ed19e8cfcd788ac',
'reqSigs': 1,
'type': 'pubkeyhash'},
'value': Decimal('0.00001000')},
{'n': 1,
'scriptPubKey': {'addresses': ['tb1qrcf8c29966tvqxhwrtd2se3rj6jeqtll3r46a4'],
'asm': '0 1e127c28a5d696c01aee1adaa8662396a5902fff',
'hex': '00141e127c28a5d696c01aee1adaa8662396a5902fff',
'reqSigs': 1,
'type': 'witness_v0_keyhash'},
'value': Decimal('0.01029734')}],
'vsize': 144,
'weight': 573}
---------------------------------------------------------------
```
## Sending Transactions ## Sending Transactions
Now that we have established comfort between our python and bitcoind interface, lets create and broadcast a transaction. For the purposes of this course, we will send test bitcoins to an address generated by us in our testnet wallet. Here's how we will do it: Now that we have established comfort between our python and bitcoind interface, lets create and broadcast a transaction. For the purposes of this course, we will send test bitcoins to an address generated by us in our testnet wallet. Here's how we will do it:
@ -398,7 +492,7 @@ All the source code for this chapter is available in the [src](./src/18_4_access
## Synopsis: Building Python from Source ## Synopsis: Building Python from Source
Skip to ["Setting Up BitcoinRPC"](17_4_Accessing_Bitcoind_with_Python.md#setting-up-bitcoinrpc) if you already have Python 3 running. Otherwise: If you need to install Python 3 from source, follow these instructions, then continue with ["Creating a BitcoinRPC Project"](17_4_Accessing_Bitcoind_with_Python.md#creating-a-bitcoinrpc-project).
### 1. Install Dependencies ### 1. Install Dependencies
```sh ```sh