Make sure your STa”M is kosher
STAMP is adding transparency, traceability and trust into today’s world of Sifrei Torah, Tefillin, and Mezuzos.
Rabbi Boruch Hirschfeld shlit"a
Rav of Cong. Ahavas Yisrael, Rosh Kollel Ateres Chaim Boruch Cleveland H, OH
“STAMP has brought professionalism and organized accountability to the field of STa”M, providing Klal Yisrael with certified kashrus on these items. They have brought tremendous hisorerus to others in the field as many others are following their lead…I have already had the chance to use their resources in Cleveland and for my own family.”
Rabbi Yaakov Hopfer shlit"a
Rav of Shearith Israel Congregation & President, Vaad HaRabonim, Baltimore
Until today, when we would go into a seforim store to buy a mezuzah, we couldn’t know where it came from. We wanted to do this mitzvah properly but didn’t have the ability to ensure its kashrus. Today, we should all have enormous hakaras hatov to STAMP for the work they are doing, enhancing the quality of STa”M, restoring these mitzvos to their proper state and seeing to it that klal yisrael is able to be mikayeim these mitzvos properly.
Rabbi Elefant
COO; OU Kosher
“Through its deliberate and thoughtful work, STAMP has begun to create a positive transformation in the STa”M marketplace. We are pleased that through the efforts of our Kashrus personnel, we are able to participate in STAMP’s efforts of education and oversight, elevating the standards of Kashrus and transparency and enhancing consumer confidence.”
Rabbi Shmuel Fuerst
Rav, Agudas Yisrael, Peterson Park, Chicago; Dayan, Agudath Israel, Illinois
“Coming Soon”
Rabbi Yisrael Reisman, Shlit”a
Rav, Agudas Yisroel, Madison; Rosh yeshiva, Torah Vodaas
“Coming Soon”
Featured in:
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.
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.
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.
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.
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.
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.
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.
The STa”M industry requires regulation
The Certification process
All of our STa”M goes through a five-stage checking process.
Our state-of-the-art computer program starts the review process.
A first magiah checks and verifies the kashrus standard.
The computer performs a second thorough review of the STa’’M.
An additional, independent magiah reviews the item for a high standard of kashrus.
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.
- What materials were used
- Who wrote it
- Who checked it
- When it was written
- Which halachic standards are met
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
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.
Rav Moshe Uri Bloi, shlit”a
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.
Rav Don Bricker, shlit”a
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 Reuvein Mendelovitz
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.
Rav Yaakov Zions, shlit”a
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.
