Multichain generate transaction(coinbase transaction)

Question

What's in the scriptPubKey of generate transaction? I looked through the raw data of generate transaction and found an output with arbitrary data with OP_RETURN

0000000000000000 //bitcoin value
71    //scriptPubKey size 113
6a    //OP_RETURN
4c6e    //push 110 bytes
53504b624630440220771079e8b6a3fe0ef68b2303306d01d8326cb960c1859a056762056618dca2b502205b6020bb08f7c0b03e552fb530c4a0dbfd61ca7a6ef4e1113445c9415f377bf9022103217cf0819355518dd771228de6c9887cc1053e8fb9d2948262a7593e92390dfe
00000000 //locktime

What does this data contain, and what is this data for?

Answer 1

This is where the miner signature is inserted, to prove who created the block. See this page for more information:

http://www.multichain.com/developers/mining-block-signatures/

We have not yet documented the format of this data in detail on the MultiChain website, but you are welcome to browse the source code to understand it more.