Whats a good ETH notary service since BTC based OP_RETRUN txns are taboo.

I want to notarize a SHA256 hash of a document I have. Before ETH I would have used a BTC OP_RETURN transaction service. Since BTC is trying to reduce notary spam, what would be a good ETH notary service that people might recommend that the ETH community doesn't frown upon?

Submitted February 10, 2019 at 01:35PM }
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