What requirements does a valid Ethereum address need to fulfill, could it be just a random number in hexadecimal? Private_key: 7231bfb75a41481965e391fb6d4406b6c356d20194c5a88935151f05136d2f2e Private_key_bytes: b'r1xbfxb7ZAHx19exe3x91xfbmDx06xb6xc3Vxd2x01x94xc5xa8x895x15x1fx05x13m/.' Public_key_hex: 0x013e81c4a44c5303b11452f649be9427b75605339d8eba90f8e99cc401a8bd4f7494e0d0740bcc0282af... https://http-directory.com/listings12704111/top-eth-wallet-generator-secrets