Note: This site shows statistics on the usage of the OP_RETURN opcode in the Bitcoin scripting language. Stats are compiled by analyzing the first 3 bytes inside each OP_RETURN field and comparing them against known byte prefixes used by each protocol.
Total Transactions Over Time
Transactions Over Time, Broken Down by Protocol
% of Transactions by Each Protocol
% of Last Week's Transactions by Each Protocol
Apps Using OP_RETURN
Note: Many protocols like Counterparty are not only using OP_RETURN only to encode data, so they may not be present in these charts.