Nice find! Was it you? 

Here's the first #tokenized #streetart from Wrocław circa 2019. You can find the thermodynamic equivalents by googling the #GPS coordinates of Klutzki's #NFT work titles on OpenSea.
 https://vibrosho.wordpress.com/2019/12/31/fanged-vent-krypto-artysta-z-pierwsza-stokenizowana-sztuka-uliczna-w-polsce/