This is not a valid addy to send or receive.
well, technically only scripts are valid and everything else is just our agreement. with that said an address is just a contract that majority of bitcoin wallets and tools such as explorers have agreed upon. so for example when you see a base58 encoded string that starts with a 0 byte and has a length of 20 bytes + 4 byte checksum, you translate it into a P2PKH script.
i think this is just an attempt by blockchair to make OP_RETURN scripts more human readable like other scripts that have addresses. although i couldn't find any documentation about it.
