Make sure your STa”M is kosher

STAMP is adding transparency, traceability and trust into today’s world of Sifrei Torah, Tefillin, and Mezuzos.

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In partnership with the Orthodox Union

Every STAMP-certified mezuzah also has the OU symbol, the world’s most trusted name in kosher food supervision, which shows the OU’s trust in our process and certification.

THE NEED

Can you say for sure that your mezuzos are kosher?

For decades, STa”M has been produced without unified supervision. Most consumers have no way to know who wrote their mezuzah, which materials were used, or whether it was ever properly checked.

Even the top sofrim and checkers (Magihim) can make mistakes. Without oversight, errors are more likely to go undetected, jeopardizing your STa”M’s kashrus.

What the kosher agencies did for food 100 years ago, STAMP is now doing for STa”M. And it’s long overdue.

mezuzos
the_sofer
The Sofer

Before STAMP

Many sofrim were not certified at all, and a large percentage of those who were did not renew their certification as required.

The STAMP Project

To earn STAMP certification, a sofer must pass a multi-stage test (written, oral, and hands-on), provide at least one reference, and renew annually. Failure to meet these requirements freezes the sofer’s profile in the database, preventing his items from being certified.

the_materials
Stam Materials

Before STAMP

Buyers could purchase the most mehudar item written by the world’s greatest sofer and never know that it was written on/with material that was not manufactured in a halachically reliable manner.

The STAMP Project

Before receiving full STAMP-certification, every sofer must sign a contract, included in which is the requirements to use only materials approved by the STAMP Rabbinic board.

Finished product

Before STAMP

Buyers have never been able to verify with absolute certainty whether a mezuzah was written by a certified sofer, on reliable klaf with kosher ink, and properly checked by a certified magiha and ‘computer-checked’ as mandated by halacha.

The STAMP Project

STAMP takes full responsibility for kashrus and reliability of every item it certifies. Every item must pass our 5-stage checking process before receiving full STAMP certification.

the_sofer

Before STAMP

Many sofrim were not certified at all, and a large percentage of those who were did not renew their certification as required.

With STAMP

To earn STAMP certification, a sofer must pass a multi-stage test (written, oral, and hands-on), provide at least one reference, and renew annually. Failure to meet these requirements freezes the sofer’s profile in the database, preventing his items from being certified.

Magiah
The Magiah

Before STAMP

Magihim worked independently, each by their own standard and with no organized oversight. 

With STAMP

STAMP-certified magihim who are employed by STAMP work together in the same checking branch and abide by the standards set by STAMP’s rabbinic board. STAMP places unprecedented emphasis on the professional development of its magihim by providing them with feedback from multiple sources and ensures that their compensation and working conditions are second to none.

Sofrim
the_materials

Before STAMP

Buyers have never been able to verify with absolute certainty whether a mezuzah was written by a certified sofer, on reliable klaf with kosher ink, and properly checked by a certified magiha and ‘computer-checked’ as mandated by halacha.

With STAMP

STAMP takes full responsibility for kashrus and reliability of every item it certifies. Every item must pass our 5-stage checking process before receiving full STAMP certification.

Before STAMP

Buyers could purchase the most mehudar item written by the world’s greatest sofer and never know that it was written on/with material that was not manufactured in a halachically reliable manner.

With STAMP

Before receiving full STAMP-certification, every sofer must sign a contract, included in which is the requirements to use only materials approved by the STAMP Rabbinic board.

Finished Product

The STa”M industry requires regulation

The Certification process

All of our STa”M goes through a five-stage checking process.

computer_program

Our state-of-the-art computer program starts the review process.

magiah

A first magiah checks and verifies the kashrus standard.

reviiew of sta"m

The computer performs a second thorough review of the STa’’M.

independent magiah

An additional, independent magiah reviews the item for a high standard of kashrus.

computer check

One remaining specialty AI-assisted computer check is completed.

Just like with food kashrus, your STa’’M and its certificate of authenticity with its unique QR code are then sealed in a tamper-proof plastic sleeve.

Your Sta”M’s Barcode

Do you already own a certified mezuzah?

Scan the QR code or enter the ID number under it to learn about your STAMP-certified piece.

STAM certification Sotware

Educational resources

Protect your mitzvos through education

The STAMP Project offers accessible and engaging Torah learning on topics related to STa”M for every level.

For Everyone

Video Shiurim

Learn essential halachos of STa”M, taught by top educators. Perfect for parents, teachers, and anyone who wants to understand the mitzvah.

Audio Shiurim

Stream or download shiurim on Mishna Berura and Kesses Hasefer—ideal for listening on the go, or while working in the field.

The STAMP Newsletter

STAMP authors and publishes articles and details for anyone looking to learn more about the mezuzos, sifrei torah and tefillin process, industry or basics.

Workshops

Learn essential halachos of STa”M, taught by top educators. Perfect for parents, teachers, and anyone who wants to understand the mitzvah.

For Professionals

Magiah Training

Magiah Training

A professional course training the next generation of magihim with a halachic curriculum, hands-on guidance, and job placement assistance in STAMP’s network.

Certified STa”M from independent sellers

Know exactly what you’re getting​

STAMP partners with approved vendors who sell certified and vetted STa”M—so you can trust what you bring into your home, your shul, or wear on your arm.

Our Rabbinic Board

Guided by the world’s leading STa”M authorities

The STAMP Project operates under the direct supervision of the world’s most respected rabbanim in the field.

 

Rav Chaim Sperling, shlit”a

The senior member of the STAMP rabbinic board, Rav Sperling has been one of the world’s most sought after Magihim (expert checker of STa”M) for nearly 50 years. The Gadol Hador, R’ Yosef Shalom Elyashiv, zt”l, requested that Rav Sperling be the Magiah of the STa”M that he approved.

A sofer for over 40 years, Rav Bloi brings an approach that helps Magihim improve their checking skills and sofrim looking to improve their writing. Known for his vast breadth and depth of knowledge of hilchos STa”M, he gives shiurim in a different city every night of the week.

A talmid of both Rav Chaim Sperling shlit”a and Rav Mordechai Friedlander zt”l, Rav Bricker is of the STa”M industry’s most trusted magihim for over a decade. His primary role in STAMP is to oversee the magihim, providing feedback needed to continue honing their expertise.

Rav Don

A talmid of Rav Mordechai Friedlander, zt”l, for 13 years, Rav Mendlowitz is one of the field’s top Magihim and a primary address for consumers looking for guidance in procuring their STa”M. By authoring the book “Inside STa”M – a Complete Buyer’s Guide,” he laid the foundation for the central theme of STAMP: transparency through the STa”M industry.

One of the foremost talmidim of Rav Mordechai Friedlander, zt”l, Rav Zions is sought after by Sofrim and Magihim throughout Israel and beyond, for his psak and guidance in all areas of STa”M. He is also the author of “Mishnas Mordechai”, the first-ever sefer published with the Piskei Halacha of Rav Friedlander. It has quickly become one of the most authoritative seforim of STa”M.

The STAMP Project was founded by Rabbi Lessin in 5779 (2019)

After growing up in a family that founded and contributed to dozens of Jewish charitable organizations, he received his first certification as a Sofer from Rav Mordechai Friedlander, zt”l, back in 2012.

His ceaseless devotion to making the STa”M industry more transparent and reliable is a timely merging of these two passions. 

Today he offers workshops, shabbosim, lectures and other opportunities for people learning about Sta’’M.

Stamp Founder