user15677: Is there a webservice around that allows one to search the OP_RETURN data on the blockchain? More precisely: I'm looking for a service that would return the transaction ids of transactions that contain an OP_RETURN with data that matches the given expression.

user18975: Chain.com offers OP_RETURN data for addresses, transactions and blocks.

15677: <p>Is there a webservice around that allows one to search the OP_RETURN data on the blockchain? More precisely: I'm looking for a service that would return the transaction ids of transactions that contain an OP_RETURN with data that matches the given expression.</p>
 18975: <p><a href="http://chain.com/docs" rel="nofollow">Chain.com</a> offers OP_RETURN data for addresses, transactions and blocks.</p>
