Final answer:
The first part of the copypasta in base64 is a string of characters that has been encoded using the base64 encoding scheme.
Step-by-step explanation:
The first part of the copypasta in base64 is a string of characters that has been encoded using the base64 encoding scheme. Base64 is a way of representing binary data as ASCII text, which makes it easier to transmit and store data that may contain non-printable or special characters. In the case of the copypasta, the base64-encoded part is usually at the beginning of the text and can be recognized by the presence of equal signs (=) at the end.