(via Ken Shirriff’s blog: Hidden surprises in the Bitcoin blockchain- ASCII image of Bernake)
Hidden surprises in the Bitcoin blockchain and how they are stored: Nelson Mandela, Wikileaks, photos, and Python software
Nelson Mandela tribute
The Bitcoin blockchain contains an image of Nelson Mandela and tribute text.
Secret message in the first Bitcoin block
'The Times 03/Jan/2009 Chancellor on brink of second bailout for banks’. Presumably this is a political commentary on Bitcoin compared to the insolvency of “real” banks.
Prayers from miners
Len Sassaman Tribute
A tribute to cryptographer Len Sassaman was put in the Bitcoin blockchain a couple weeks after his death by Dan Kaminsky.
A creature simulator in Basic
The original Bitcoin paper
Photographs in a messaging system
Recently someone has built a message/storage system on top of Bitcoin that allows a growing sequence of messages, text, and images to be stored in the blockchain.
Wikileaks cablegate data
A 2.5 megabyte Wikileak files (‘cablegate-201012041811.7z’) was embedded in the Bitcoin blockchain. The data is followed by a message explaining how to access it.
Leaked firmware key and illegal primes
This transaction has a link about a leaked private key, followed by 1K of hex bytes as text, which supposedly is the private key for some AMI firmware.
Email from Satoshi Nakamoto
The following email message allegedly from Bitcoin inventor Satoshi Nakamoto appears in the blockchain. (It’s almost certainly not really from him.)
Text in Bitcoin addresses
Bitcoin addresses are 34 characters long, so it is possible to put something interesting in the text address, although there are limitations.
Mysterious encrypted data in the blockchain
There are many mysterious things in the blockchain that I couldn’t figure out, that appear to be encrypted data.
Valentine’s day messages
1 month ago
There are a bunch of Valentine’s day messages in the blockchain from a couple days ago. I assume someone set up a service to do this.
How to put your own message in the blockchain