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

Bitproof

Coinspark

Colu

Docproof

Eternity Wall

Factom

Monegraph

Onename

(built on Blockstack)

Open Assets

Stampery

Note: Many protocols like Counterparty are not only using OP_RETURN only to encode data, so they may not be present in these charts.