Bitcoin Forum

Forgive me if this is an obvious question, but is there a way to view the memo attached to a transaction?  I don't see it when I search for the transaction on blockchain.info.

Are you sure the transaction even has a memo attached?

Is there a way to attach a memo to a transaction (and read it)?

I think blockchain.info has such a service.

Memos are not a part of the bitcoin protocol.  They are not stored in the blockchain nor are they transmitted to peers.

Which wallet are you using that is allowing you to create a memo?  With most wallets the memo is only a note to yourself that is stored in your own wallet as a reminder to yourself.

Blockchain.info also provides a memo service to their customers.  In that case, it's data that they store in their own database, and is therefore only available from them.

The blockchain.info memo should show up when you view the transaction on blockchain.info.

Thanks, Danny.  I've used Electrum, Qt, the blockchain wallet, coinbase and probably a couple others which I've forgotten about.

I guess I conflated the blockchain feature with other things I thought I knew about the protocol.  I assumed that the headline Satoshi embedded in the genesis block was done via memo field.

January 3, 2009, Times of London; “Chancellor on brink of second bailout for banks”.

That headline was embedded in the scriptSig section of the transaction.  This is where a signature would normally be included to prove authorization to spend the previously unspent output.  Since the only transaction in the genesis block is the coinbase transaction, the scriptSig section is unused and unnecessary.  Therefore, the space was available for embedding the headline.