Op_return BitcoinJ & Bitcore

[MomoCoin]

Few questions here:

Im interested in some simple OP_Return functions, are there any altcoins that have made use of this to encode hashes?

I know of proofofexistence, secretcoin, cryptograffiti etc but are three any examples that make use of daemon as opposed to blockchain.info api?

Last of all, has Bitcore received support for PoS coins yet? (I know blackcoin and PIGGY were porting)

Thanks!

[byteball]

Hi, MomoCoin

sorry for necro

it seems that https://github.com/coinspark/python-OP_RETURN/
has direct bitcoind-relying implementation, although I never used it.
There are also manual instructions on this forum how to do it with bitcoin-cli.
Yesterday I successfully did it with Electrum, which is a bit more tricky.

Not sure about Bitcore ports for PoS bitcoind clones....