proof insurance

proof record

insurance of evidence

evidence record

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OSDSP «Open Source Data Security Proof» – The proof insurance in the BLOCKCHAIN

Trust is good, control is better!

OSDSP Free-Proof – to the minute

1. Copy the SHA checksum of a file to the       …..clipboard.

2. Send the SHA checksum as mail subject                  …..to osdsp@outlook.com.

On Mondays, 10:00 AM (CET), all collected checksums are anchored in the OSDSP-REGISTER.

Free of charge

CHF 0.-


OSDSP Express-Proof

You can't wait with the urgent evidence anchoring of an idea or file?

Just give us a call and we will take care of the secure recording of evidence for you. You can reach us Monday to Friday from 10:00 to 18:00 (CET).

Hotline: +41 79 686 38 56

Price per event

CHF 150.-


OSDSP Support

We are at your disposal for technical support.

The billing units are 15 minutes                                  (min. 1 hour per event).

Conditions: Payable upon delivery.

Hotline: +41 79 686 38 56

Per hour

CHF 150.-



For mobile devices & computers

You have an archive with valuable and sensitive data?

With a digital fingerprint and a public time stamp, OSDSP proves that data exists at a time and does not change.

For OSDSP users who do not want to disclose their sensitive data, OSDSP is the simple, secure and cost-effective IT security solution including support.



Do it:

DANIEL MAYERTHALER ASSEMBLY © 2022, Im Grund 15, 5405 Dättwil, Switzerland, info@mayerthaler.ch, +41 79 686 38 56,