UNLESS is a trade name of Rocket Launcher (international trademarks pending). Rocket Launcher is a company registered at the Chamber of Commerce in Amsterdam, The Netherlands, under registration number 65190645 . Our VAT number is NL856013389B01.

Adresses

The company is registered at the following address.

Rocket Launcher BV
C. Kruyswijkstraat 31
1022 KJ Amsterdam
The Netherlands

However, we are headquartered at the Herengracht, overlooking the canal ring in the city center of Amsterdam. You can visit us there:

Unless
Herengracht 472
1017 CA Amsterdam
The Netherlands

About Rocket Launcher

Rocket Launcher was started by Marcel Panse and Sander Nagtegaal, as the holding company for their brand Unless.

About this website and the service

This website is built with Astro and deployed as static files to S3. The underlying UNLESS service is based on a serverless architecture using S3, Cloudfront, Amazon API Gateway, Lambda functions, DynamoDb, Firehose, Redshift and Bedrock. These are all services offered by Amazon Web Services. Besides that, it uses several AI models offered by vendors like Microsoft.

About our jumbotron pattern

An aperiodic monotile, commonly known as an ‘einstein,’ is a shape capable of tiling the plane exclusively in a non-periodic manner. Our jumbotron pattern features the first true aperiodic monotile—a shape that naturally enforces aperiodicity through its own geometry, without the need for additional constraints such as matching conditions.

The pattern incorporates a polykite, referred to as ‘hats,’ developed through multiple rounds of substitution. This work is based on the scientific contributions of David Smith, Joseph Samuel Myers, Craig S. Kaplan, and Chaim Goodman-Strauss.