价值转移

TxTypeValueTransfer 用于用户发送 KAIA。

由于 kaia 提供了多种交易类型，使每种交易类型只服务于一个目的，因此 TxTypeValueTransfer 只限于将 KAIA 发送到外部拥有的账户（EOA）。

从web3py_ext导入extend，将 web3 扩展为 kaia web3

从 eth_account、web3py_ext 和 cytoolz 中导入必要的实用程序

使用指定的 kairos 测试网 URL 创建 Web3 实例

此外，您还可以将提供商 URL 从 kairos 更改为 quicknode

从私人密钥加载账户

创建一个TxType.VALUE_TRANSFER类型的空事务。您可以使用 empty_tx 工具来获取已填写默认字段的 tx。

使用 merge 工具，将附加字段（如from、to和value）合并到空 tx 中。

您可以使用 Web3.to_peb 工具来转换十进制数值。

使用 fill_transaction 为交易对象添加更多参数，如 gas 限制...

用用户的私人密钥签署值传输 tx

从已签署的 tx 中的签名中恢复签名人地址

您可以使用Account.decode_transaction工具对 RLP 编码的 tx 进行解码，如果您想让输出格式更漂亮，请使用to_pretty工具。

向区块链发送 tx。它将返回 tx 哈希值，用于等待接收

如果交易已在区块链中完成，wait_for_transaction_receipt 方法会返回交易收据。

最后，得到结果。

txTypeValueTransferTransaction.py


from web3py_ext import extend
from web3 import Web3
from eth_account import Account
from web3py_ext.transaction.transaction import (
    empty_tx,
    fill_transaction,
    TxType
)
from web3py_ext.utils.klaytn_utils import to_pretty
from cytoolz import merge
w3 = Web3(Web3.HTTPProvider(
  'https://public-en-kairos.node.kaia.io'
  ))
def web3_value_transfer_sign_recover():
    user = Account.from_key('0x0e4ca6d38096ad99324de0dde108587e5d7c600165ae4cd6c2462c597458c2b8')
    value_transfer_tx = empty_tx(TxType.VALUE_TRANSFER)
    value_transfer_tx = merge(value_transfer_tx, {
        'from' : user.address,
        'to' : user.address,
        'value' : Web3.to_peb(10, "klay"),
    })
    value_transfer_tx = fill_transaction(value_transfer_tx, w3)
    # sign the kaia specific transaction type with web3py
    signed_tx = Account.sign_transaction(value_transfer_tx, user.key)
    print("\nraw transaction of signed tx:", signed_tx.rawTransaction.hex())
    recovered_tx = Account.recover_transaction(signed_tx.rawTransaction)
    print("\nrecovered sender address", recovered_tx)
    decoded_tx = Account.decode_transaction(signed_tx.rawTransaction)
    print("\ndecoded transaction:", to_pretty(decoded_tx))
    tx_hash = w3.eth.send_raw_transaction(signed_tx.rawTransaction)
    tx_receipt = w3.eth.wait_for_transaction_receipt(tx_hash)
    print('tx hash: ', tx_hash, 'receipt: ', tx_receipt)
web3_value_transfer_sign_recover()

output


❯ node txTypeValueTransferTransaction.py
raw transaction of signed tx: 0x08f888820365850ba43b740082f61894a2a8854b1802d8cd5de631e690817c253d6a9153888ac7230489e8000094a2a8854b1802d8cd5de631e690817c253d6a9153f847f8458207f6a0fa9c7e720916e53b587bebc1b6dfdf3fa75c4390936353f4f9e9c446688be6a4a00ac3553e050f18a566541ffa15d6dd36566c077059514c90ad2570a36b29df2c
recovered sender address 0xA2a8854b1802D8Cd5De631E690817c253d6a9153
decoded transaction: {
  "type": 8,
  "to": "0xA2a8854b1802D8Cd5De631E690817c253d6a9153",
  "value": 10000000000000000000,
  "nonce": 869,
  "gasPrice": 50000000000,
  "gas": 63000,
  "from": "0xA2a8854b1802D8Cd5De631E690817c253d6a9153",
  "signatures": [
    {
      "v": 2038,
      "r": 113354712982352869976369229827103350581481011848350586238649071308501699782308,
      "s": 4868251983953391094440263137126339926417283017062042162724837386880119594796
    }
  ],
  "chainId": 1001
}
tx hash:  0xd47018a0bc908e18f980bc59ee454e6016317300e4f207341eaa77a8c841bc0f receipt:  AttributeDict({'blockHash': HexBytes('0xe873b7f3bb39ce89131fbbfc727bca00f1998a4b617e89d1db20d55fc479e32d'), 'blockNumber': 147339314, 'contractAddress': None, 'cumulativeGasUsed': 352123, 'effectiveGasPrice': 25000000000, 'from': '0xA2a8854b1802D8Cd5De631E690817c253d6a9153', 'gasUsed': 21000, 'logs': [], 'logsBloom': HexBytes('0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'), 'status': 1, 'to': '0xA2a8854b1802D8Cd5De631E690817c253d6a9153', 'transactionHash': HexBytes('0xd47018a0bc908e18f980bc59ee454e6016317300e4f207341eaa77a8c841bc0f'), 'transactionIndex': 2, 'type': 0})