KeeeX Timestamp Certificate

3bezxM2BtGa8D8keHGJ5qaPwQAHXu4eedgpmvGX

Anchored on the Bitcoin Blockchain

This document is a static immutable timestamp certificate.

Download: 3bezxM2BtGa8D8keHGJ5qaPwQAHXu4eedgpmvGX.html

3bezxM2BtGa8D8keHGJ5qaPwQAHXu4eedgpmvGX
f2051396f51aadf6a862b6fdebe9e28e980e024eca51068265807eae9491fb35
BlockCypher.com Blockchain.info Blocktrail.com
Fri Feb 16 12:00:01 UTC 2018
List of files timestamped in this transaction:
  • xekeb-sovyt-sogad-luket-behab-dozer-nimeg-nepym-rilog-hadez-lazid-hafil-minur-kuryz-fybot-vikif-paxyx
    1W1cUja65i9uumPjZ9zcqzsnhMH6WLizGNp7GXf
    2018-02-16 08:32:16.0
  • xisis-gozev-hekig-bocid-rabyd-sizih-vazyl-vyvyf-puzyt-sezyk-mimus-hupoz-lefeb-riham-falan-nygod-voxox
    1xuMXYCvLT5vtRNygGPBr9EnFqioyTRYWp7tHUg
    2018-02-16 08:33:06.0
  • xicop-zyzes-pogeh-zireb-cuzil-zemib-voled-civep-myrot-sefan-ganyk-gizut-ruror-kodoz-gafaz-dyhit-doxux
    1qGaJi9bHHZRbywGPvwf1GeuZpQzgDDkkfmJv5s
    2018-02-16 08:33:20.0
  • xetop-tilyv-gizeb-zamyl-vikit-farez-rufec-zosyz-vycis-kyzul-tokas-faryb-gomyf-gylec-supen-zoryv-muxox
    3FBX4desBsWYsbRzUN85Q8eyykQYYrERWDaDQQ3
    2018-02-16 09:20:58.0
  • xoboh-begir-suram-dydez-ryzin-fyhed-minuk-toheh-fenys-lymis-hamuv-tumal-lyvid-gomud-nibig-rubuf-laxix
    2018-02-16 09:46:17.0
  • xuhap-gopev-rucog-pucod-faryr-cyhag-kumal-zereh-zurod-sozyh-dynyb-ropud-dafoc-pybuz-nopes-cipuz-nexax
    1KGxnvHUtKcET48RCaFC7E15NkCGypcACACAKjd
    2018-02-16 09:52:29.0
  • xicoh-mypin-cagic-kokac-gebys-sakot-kofek-celep-sibac-rofuv-kudor-rirep-rykys-kefeb-zesuh-cypyz-haxyx
    3azwE6vZwmkmgQBDk9MgH9YWtKUP8KvvyLzzyuD
    2018-02-16 09:52:50.0
Technical Explanations

This certificate mentions file identifiers (also known as KeeeX 'idx') that are computed from sha256 hashes that cannot under the current state of technology be counterfeited. No two distinct files can share the same identifier.

The KeeeX server produces a certificate summary like this one every several hours. This timestamp certificate may hence adequately seen as a kind of sidechain, that prevents from pushing too many transactions on the Bitcoin blockchain. It also mutualizes the cost of timestamping of course, which allows KeeeX to provide this as an unlimited service.

This certificate displays at the top below its own b58 encoded identifier computed from an sha224 hash. These settings produce a 39 character string that fits within the current 80 byte Bitcoin blockchain limit. Again, under the current state of the technology, it is not possible to counterfeit this identifier by producing another certificate file with the same id.

This certificate's id has been registered as OP_RETURN data on the Bitcoin transaction above that can for your convenience be verified by following the links below. The present certificate file hence creates a proof chain from the Bitcoin blockchain ledger to your file, that provides evidence that at the transaction date you had knowledge of the identifier of your file, which you may or not have decided to keep private or share publicly. This idx does not by itself expose your data in any way. By using KeeeX, you also have a chance to digitally sign your original file.

Although KeeeX will make its best efforts to keep this certificate accessible and indexable by search engines, we cannot guarantee this. If some file identifiers are of interest to you it is thus your responsibility and interest to download it and make sure to preserve it indefinitely. Once downloaded, you may verify its integrity using the KeeeX app. Depending upon its version, the KeeeX app may automatically retrieve this file on your behalf.

You may wonder why we chose to mutualise this certificate for potentially a large number of files. The reason is that a single certificate may provide a proof of existence for an unlimited number of files and no blockchain, Bitcoin inclusive, is designed to satisfy the massive notarisation needs, since both the block size and rate are constrained.