KeeeX Timestamp Certificate

2i1WSp88YNj38wBhrv996MqminNi6SYz8rdkymw

Anchored on the Bitcoin Blockchain

This document is a static immutable timestamp certificate.

Download: 2i1WSp88YNj38wBhrv996MqminNi6SYz8rdkymw.html

2i1WSp88YNj38wBhrv996MqminNi6SYz8rdkymw
4f06f7b6d30a846fb8bd7f9c64e230abc8c3678a510107f57cbef85cb8690b6d
BlockCypher.com Blockchain.info Blocktrail.com
Sun Jan 28 00:00:01 UTC 2018
List of files timestamped in this transaction:
  • xuvob-nesec-daner-mogeg-nanip-suvan-monag-nufev-ponot-vasik-sotub-zuheg-tyvuz-zakuz-lozos-hipor-kexux
    12H8wrjDwXGdYXwRKRDnJAz96c8tRbZXmsarc4x
    2018-01-27 12:34:33.0
  • xukes-lobel-dufud-macyk-fitup-nygyv-ravev-felat-luhyv-basut-myzup-dyrul-bibyt-rozoz-hypad-nugoc-dexux
    3KUFrTkVcsCfsFyLBksP1WtWwDJNA5zqcSvQbzT
    2018-01-27 12:34:46.0
  • xigad-nizit-cafot-vogof-civog-ganig-vapyp-napep-beguc-fopog-tohyh-tofyb-dylaf-mugoh-cyziz-golop-puxix
    2NR6r8tzmWxiy2knDMUcy5hRy4zQFNELenaJAE6
    2018-01-27 12:37:57.0
  • xehes-zebep-napaz-vilod-pofoz-tirad-gizuf-vurom-famuv-govaz-sivib-cilot-rygiv-gudib-larur-poham-hoxax
    34f5JHH1CDJRh8m5aziQx9YL8PzgtEs9gfj7WRD
    2018-01-27 12:46:09.0
  • xukoc-pukor-cimod-kyvav-kefes-holum-momos-berof-lehil-kegyc-kasag-lybef-pamep-sical-dykef-raliv-dyxix
    39cmXJE8QeogRVeSee7ExmxaB6b5oMBwVAvdvWC
    2018-01-27 12:47:07.0
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.