The document describes an open hardware registration system where designers can register their devices and products, receive unique IDs, and apply a trademark that links to online design files and documentation. The system is intended to empower users by granting them freedoms under an open license to modify and share designs, and to register as producers themselves if they further develop a design.

1. designer device / prototype
individual / group
design artifacts (files)
copyleft license
1. The designer applies the copyleft license to the product designs and documentation.
YATTA Open Hardware
Eteläranta 6, FI-00130 Helsinki | www.yatta.fi Tuomo Tammenpää

2. designer
individual / group device / prototype
design artifacts (files)
copyleft license
ID: FFFF ohanda.org
OK
2. The designer registers in (as a person or as an organisation) and gets an unique producer ID. By registering at
Ohanda, the designer accepts the terms and conditions to use the trademark by granting the 4 freedoms to the user
and publishing the work under a copyleft license.
YATTA Open Hardware
Eteläranta 6, FI-00130 Helsinki | www.yatta.fi Tuomo Tammenpää

3. designer
ID: FFFF device / prototype
OKEY: FFFF-0001 ohanda.org
3. The designer will then register the product and receive a unique product ID. After doing so, the designer may
apply the trademark to the product.
YATTA Open Hardware
Eteläranta 6, FI-00130 Helsinki | www.yatta.fi Tuomo Tammenpää

4. designer product description user
individual / group consumer
ohanda.org
OKEY: FFFF-0001
design artifacts (files)
copyleft license
4. With the unique Ohanda key on the product the user will be linked back to the designer, the product description,
design artifacts and the copyleft license through the web based service offered by Ohanda.
YATTA Open Hardware
Eteläranta 6, FI-00130 Helsinki | www.yatta.fi Tuomo Tammenpää

5. designer product description user
individual / group consumer & producer
ohanda.org
5. Empowered by the freedoms, user may develop the product further, register in as producer, share his/her design
artifacts applied with copyleft license and be connected to the derivatives of the product.
YATTA Open Hardware
Eteläranta 6, FI-00130 Helsinki | www.yatta.fi Tuomo Tammenpää

6. The service could be based on existing webservices like DNS in order to keep the system light and distributed.
YATTA Open Hardware
Eteläranta 6, FI-00130 Helsinki | www.yatta.fi Tuomo Tammenpää

7. The trademark and registration key is printed / engraved on each copy of the device so the link to the documentation
and to the contributors travels with the physical device itself.
YATTA Open Hardware
Eteläranta 6, FI-00130 Helsinki | www.yatta.fi Tuomo Tammenpää