When sending a transaction using a wallet at blockchain.info you can add a public message. This message shows up when viewing the transaction at blockchain.info.

Is this message embedded in the actual block chain or is it just a record in the database of the server of blockchain.info?

  • Just recorded in the database.
    – Nick ODell
    Feb 22 '13 at 20:44

It did for a few days, before the blockchain.info operator concluded blockchain bloat was not good for Bitcoin. Now those are only stored on Blockchain.info hosts.

For more details, see:

  • 1
    blockchain.info has removed this feature. there is no more public message notes. Mar 23 '17 at 23:15

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