ape-etherscan: Etherscan Explorer Plugin for Ethereum-based networks
Project description
Quick Start
The following blockchain explorers are supported in this plugin:
- Etherscan for Ethereum networks.
- Ftmscan for Fantom networks.
- Arbiscan for Arbitrum networks.
- Optimistic Etherscan for Optimism networks.
- Polygonscan for Polygon networks.
- Snowtrace for Avalanche networks.
Dependencies
- python3 version 3.8 or greater, python3-dev
Installation
via pip
You can install the latest release via pip:
pip install ape-etherscan
via setuptools
You can clone the repository and use setuptools for the most up-to-date version:
git clone https://github.com/ApeWorX/ape-etherscan.git
cd ape-etherscan
python3 setup.py install
Quick Usage
Set up the environment
Specify API keys as environment variables. You could put them in your shell's config like ~/.profile
or use a tool like direnv and store them locally in .envrc.
You can also specify multiple comma-separated keys, a random key will be chosen for each request. This could be useful if you hit API rate limits.
You can obtain an API key by registering with Etherscan and visiting this page.
export ETHERSCAN_API_KEY=SAMPLE_KEY
export FTMSCAN_API_KEY=SAMPLE_KEY
export ARBISCAN_API_KEY=SAMPLE_KEY
Transaction URLs
When you have this plugin installed, Etherscan explorer URLs appear in CLI output.
INFO: Submitted 0x123321123321123321123321123aaaadaaaee4b2aaa07901b80716cc357a9646
etherscan URL: https://rinkeby.etherscan.io/tx/0x123321123321123321123321123aaaadaaaee4b2aaa07901b80716cc357a9646
Contract Types
The ape-etherscan plugin also assists in fetching contract_types.
Use the Contract top-level construct to create contract instances.
When the explorer plugin locates a contract type for a given address, the Contract return-value uses that contract type.
from ape import accounts, Contract
contract = Contract("0x55a8a39bc9694714e2874c1ce77aa1e599461e18")
receipt = contract.call_mutable_method("arg0", sender=accounts.load("acct"))
The first line contract = Contract("0x55a8a39bc9694714e2874c1ce77aa1e599461e18") checks if ape has a cached contract-type for the address 0x55a8a39bc9694714e2874c1ce77aa1e599461e18.
If it does not find a cached contract type, it uses an explorer plugin to attempt to find one.
If found, the contract type is then cached to disk and in memory for the active session so that subsequent invocations don't require HTTP calls.
The return value from Contract is a ContractInstance, so it is connected to your active provider and ready for transactions.
NOTE: Vyper contracts from Etherscan always return the name Vyper_contract.
However, if the plugin detects that the contract type has a method named symbol, it will use the return value from that call instead.
Contract Verification
Use the ape-etherscan plugin to publish and verify your contracts.
Contract verification associates a contract type from Ape with an Ethereum address on Etherscan.
Learn more about Etherscan verification here.
To verify contract in Ape, you can set the publish key to True when deploying:
from ape import accounts, project
account = accounts.load("testnetacct")
account.deploy(project.MyContract, publish=True)
You can also use the explorer class directly to publish at a later time:
from ape import networks
etherscan = networks.provider.network.explorer
etherscan.publish_contract("0x55a8a39bc9694714e2874c1ce77aa1e599461e18")
NOTE: You must set an Etherscan API key environment variable to use the publishing feature.
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