Submit file
We assume no liability or warranty for function, correctness, or commercial applicability. The application provided here is therefore provided to you without any kind of guarantee or warranty of correct functioning or actual usability. Descriptions of functionality do not constitute a warranty of any kind. Every user is advised to thoroughly test the application before any use, however configured. It is also expressly recommended not to use the application for business-critical processes, sensitive data, or personal data. This service may be discontinued at any time without replacement.
Warning: Your data is transferred to the Solana blockchain. We transfer your data - by this we mean the hash values - to the Solana blockchain. This data cannot be deleted or blocked.
You can find out more in our Privacy Policy | Legal Notice
-
01
Calculate hash
Your browser calculates the SHA-256 hash locally – the file itself never leaves your computer.
-
02
Add details
Optional: provide an author to generate an additional pseudonymized hash.
-
03
Save to Solana
The hash values are recorded immutably on the Solana blockchain via transaction.
-
04
Download certificate
You will receive the transaction signature, an explorer link, and a PDF certificate to download.
Background
Trusted Timestamps
In today's digital age, protecting the integrity and authenticity of data has become an urgent concern. Fortunately, there is an excellent solution: trusted timestamps. By applying cryptographic methods and integrating trusted third-party services, we can establish and validate the existence and integrity of digital information at a specific point in time. This article looks at the advantages and disadvantages of trusted timestamps and their significance in legal and regulatory contexts.
Understanding trusted timestamps
Trusted timestamps are about generating timestamps for our digital documents and data in order to link them to specific points in time. The process starts with cryptographic hash algorithms such as SHA-256, which generate unique strings of characters from the content of our documents. We then seal these hash values with the help of trusted third parties, often so-called timestamp authorities (TAs), to create digital timestamps.
The role of timestamp authorities (TAs)
Think of it this way: certification authorities are our trusted allies in this project. They play a decisive role in this process by receiving our hash values and providing our digital documents with timestamps. They act like independent and impartial guardians who verify the integrity of documents and ensure that our timestamps are tamper-proof. With their help, we can build trust and gather the evidence needed for the authenticity and existence of our timestamped data.
Trusted timestamps in action
Now that we have looked at the basics, let's take a look at how trusted timestamps actually work:
- Hash calculation: We begin by passing our original digital document through a cryptographic hash function. This sophisticated function generates a unique hash value that represents the content of the document.
- Requesting the timestamp: Next, we send our hash value together with a timestamp request to our trusted timestamp authority.
- Timestamp generation: Our trusted timestamp authority receives our hash value and generates a timestamp from it. To make the whole process even more secure, it signs the timestamp with its private key. This sophisticated process creates a seal that binds the timestamp to our document and makes it tamper-proof.
- Verifying the timestamp: The moment of truth! To verify the integrity of our timestamp, we compare the original document with the timestamp. If our document has remained unchanged since the timestamp was created, the hash value derived from the document will match exactly the one stored in the timestamp. This verification process provides solid proof of the integrity and existence of our document at the time of the timestamp.
Applications for trusted timestamps
The range of applications for trusted timestamps extends across various fields:
- Compliance with legal and regulatory requirements: Trusted timestamps provide indisputable evidence in legal and regulatory proceedings. They help prove the existence of a document at a specific point in time, support the protection of copyrights, and ensure compliance with retention obligations.
- Protection of intellectual property: Creatives can rejoice! With trusted timestamps, artists, authors, and other creatives can provide verifiable proof of ownership and protect their valuable intellectual property.
- Financial transactions: In the financial world, trusted timestamps play an important role in ensuring the integrity and authenticity of electronic signatures, contracts, and records.
- Data integrity and audit trails: Companies can use trusted timestamps to maintain the integrity of important data, create secure audit trails, and quickly detect unauthorized changes or manipulation.
Trusted timestamps prove to be a powerful tool for preserving data integrity and authenticity in our digital landscape.
By harnessing the potential of cryptographic hash algorithms and incorporating trusted timestamp authorities, we can create trust, transparency, and accountability in legal, regulatory, and security-related areas. We should therefore make use of the possibilities offered by trusted timestamps and ensure that our digital records remain unaltered, reliable, and protected.