On May 2nd, 2014 I sent a transaction to the NameCoin cryptocurrency network which read: I assert title to the file at the URL with the creator’s public announcement of it’s publishing. The file whose SHA256 hash is d41b8540cbacdf1467cdc5d17316dcb672c8b43235fa16cde98e79825b68709a is taken to be the file in question. Title transfers to whoever controls this blockchain entry. This is the first digital artwork to be attributed on-chain and the first fully specific, fully transferable NFT. The on-chain data is still live. Here is the record from a NameCoin blockchain explorer: https://nmc.tokenview.com/en/tx/fa8b9a6ad4d266ffbec4f9a1217e0dbcd657bb1eb3ed49912a2ab1bd3bb48f8d
URL https://twitter.com/mccoyspace/status/462320426719641600