Bitcoin Stack Exchange is a question and answer site for Bitcoin crypto-currency enthusiasts. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

This question already has an answer here:

I randomly encountered this address on and at the top a message appears presumably describing the owner of the address. I have not seen this before. Is this just a feature of or is it a feature generally available in the Bitcoin system? And if so, how does this feature work?

share|improve this question

marked as duplicate by Nick ODell, Stephen Gornick, o0'., ThePiachu, David Perry Mar 19 '13 at 21:07

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

@Nick Really? That question seems to be related to messages associated with transaction. The message above is associated with an address. Is it the same system? – jonls Mar 4 '13 at 9:55
Those two questions are NOT duplicates. They are entirely different questions. – Beetle Jul 16 '13 at 17:02

This is known as "tags", and it is '' specific. You can use any web page, or user profile or bitcoin-otc Id as link. Your link page should contain your address.

share|improve this answer
I tried to tag my address and specified twitter status as link. Tagging was successful, but verification failed. :-) – Mar 4 '13 at 9:32
I have tagged one my addresses but it doesn't show up this way. In addition the tag only specifies a label not a long text message. It doesn't seem to be the same feature to me. – jonls Mar 4 '13 at 9:58
I think I figured it out now. You can't actually get a custom message when you submit a tag, however the tags from BitcoinTalk profiles automatically get the message from the signature that the user has defined on that forum. – jonls Mar 4 '13 at 22:53
up vote 1 down vote accepted

This is a feature of only, because it is stored in their database. It is possible for anyone to associate a link ("tag") with any bitcoin address on, as long as it can be verified that the page the tag links to also contains the same bitcoin address.

However, the example address provided in the question contains both a link and a short message. This happens for tags that point to user profiles on The message displayed is simply the user signature from that forum.

share|improve this answer

Not the answer you're looking for? Browse other questions tagged or ask your own question.