Simple Blockchain Art Diagram, 2016, digital media. After MTAA ca. 1997.
Adapted From
http://www.mtaa.net/mtaaRR/off-line_art/snad.html
Licensed
http://creativecommons.org/licenses/by/4.0/ (after the original).
Blockchain Hashes (simple-net-art-diagram.gif)
Proof Of Existence (422422)
https://blockchain.info/address/1KEToGLEoU9riqp3uh91Btii1VC9kevJ38
https://blockchain.info/tx/730b1015d7f849bd134498d41d9decc49bed77a2ffb127aeafb4e7fb0664d177
Bitsig (422423)
https://blockchain.info/address/12vAC7Wsrhgt248MifRbPBxeLZKDDy6vBc
https://blockchain.info/tx/2d5193a2128459ba61c0746d0cbb3c1414734e85971f1b016d180706580b111f
Source
Image, source and more information can be downloaded here.