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| In server folder | |
| :server kirill$ ~/google-cloud-sdk/bin/gcloud app deploy --appyaml yaml/app.yaml | |
| Services to deploy: | |
| descriptor: [yaml/app.yaml] | |
| source: [/Users/kirill/Prog/StepApp/steplaunch-app/server] | |
| target project: [step-launchpad] | |
| target service: [default] | |
| target version: [20220921t075001] |
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| # This snippet generates BIP-39 mnemonic (seed phrase) | |
| # then derives 10 Ethereum private keys from it (with their addresses) | |
| # The same algorithm and paths are used in Metamask, Trust Wallet, Ganache, hardhat | |
| # and other popular wallets and tools. | |
| from bip44 import Wallet | |
| from bip44.utils import get_eth_addr | |
| from mnemonic import Mnemonic | |
| mnemo = Mnemonic("english") | |
| words = mnemo.generate() |
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| ethereum.enable(); | |
| var governanceContract = web3.eth.contract([{"constant":true,"inputs":[],"name":"allProposalsFinished","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_targetContract","type":"address"},{"name":"_transaction","type":"bytes"}],"name":"newProposal","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"","type":"bytes32"}],"name":"proposals","outputs":[{"name":"finished","type":"bool"},{"name":"yesVotes","type":"uint256"},{"name":"noVotes","type":"uint256"},{"name":"targetContract","type":"address"},{"name":"transaction","type":"bytes"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"voters","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"","type":"uint256"}],"name":"allProposals","outputs":[{"name":"","type":"b |
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| pragma solidity ^0.5.0; | |
| contract MyToken { | |
| string public name = "Very Bad Token"; | |
| string public symbol = "VBT"; | |
| uint8 public decimals = 2; | |
| mapping (address => uint256) public balances; | |
| uint256 public totalSupply; | |
| event Transfer(address indexed from, address indexed to, uint256 value); |
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| pragma solidity ^0.5.2; | |
| /** | |
| * @title SafeMath | |
| * @dev Unsigned math operations with safety checks that revert on error | |
| */ | |
| library SafeMath { | |
| /** | |
| * @dev Multiplies two unsigned integers, reverts on overflow. | |
| */ |
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| pragma solidity ^0.4.24; | |
| // File: contracts/ERC223ReceivingContract.sol | |
| /** | |
| * @title Contract that will work with ERC223 tokens. | |
| */ | |
| contract ERC223ReceivingContract { | |
| /** |
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| pragma solidity ^0.4.13; | |
| contract Receiver { | |
| function tokenFallback(address from, uint value, bytes data); | |
| } | |
| /* | |
| * ERC20 interface | |
| * see https://github.com/ethereum/EIPs/issues/20 | |
| * |
ongrid
/ privkey_from_parity_phrase.py
Created
June 7, 2018 10:54
Parity private key from seed phrase
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| from sha3 import keccak_256 | |
| from eth_keys import keys | |
| def privkey_from_parity_phrase(phrase): | |
| h = keccak_256(phrase.encode('utf-8')) | |
| for i in range(16384): | |
| h = keccak_256(h.digest()) | |
| while keys.PrivateKey(h.digest()).public_key.to_checksum_address()[0:4] != '0x00': | |
| h = keccak_256(h.digest()) | |
| private_key = h | |
| return private_key |
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| /* | |
| Example of web3 call via injected web3 at browser's console | |
| */ | |
| web3.eth.getBlock(100, function(error, result){ | |
| if(!error) | |
| console.log(result); | |
| else | |
| console.error(error); | |
| }); |
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| """ | |
| pip install eth-hash | |
| pip install eth-keys | |
| """ | |
| from eth_keys import keys | |
| from os import urandom | |
| from eth_hash.auto import keccak | |
| # Generate | |
| private_key = keccak(urandom(4096)) | |
| private_key_bytes = private_key |
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