Blockchain data found

Date of transaction:

Signed file details

This page contains information about digitally signed file embedded in the Ethereum blockchain. Since transaction is confirmed this file is permanently certified and proven to exist.

Short code: 2ooY2z

Hash amount SHA256

f51deb41e9d38262ac1eaedced985bdb587a1d90f3a49a9abcc994adb9e051b2

Link to the original file is

https://c3.staticflickr.com/4/3880/14929976626_e66f2dcfbb_k.jpg

Transaction id

0x41ee5ea3175f14c9a9318a806334c886c4c9c20348c1a52d815fa139a7fe2c0b

Sent by

0xc2be1c765d622bcfa3ab30bedb508b633ab79217

Description:

Blue Harbor

How does it work

Cryptographic digest (or hash amount) has been calculated from this file using SHA256 algorithm and then saved in the blockchain. The original link to this file is also now permanently saved.

What does it mean

It means that this confirmed blockchain transaction contains a file (a document), hash amount of which has been permanently stored inside transaction. It is now impossible to modify or backdate this file based on blockchain principle (link). If at later date you want to verify this document, and you have a copy of it, you can upload it using form above, calculate its hash amount and compare with the hash amount stored in the blockchain. Matching hash amounts is a 100% probability that the document is authentic.
Hash function algorithm of SHA256 has been developed by NSA. More info http://en.wikipedia.org/wiki/SHA-2

How to make sure that file matches the signature

You need to calculate SHA256 hash amount and compare it with the one saved in the blockchain.

How to calculate SHA256 hash amount

1

Upload file (or paste in case of text data) into the form on this page. Hash will be calculated inside the browser and never send over internet. Calculated result will be compared with the file previously saved and result will be shown to you.

2

If you don't trust our page, feel free to calculate hash amount of your file using independent tools. Just google “calculate sha256 hash”.

3

You can also calculate hash by yourself, using open source code.