KeeeX Timestamp Certificate

1fMFVGem8WEwGAFzWkkJFd32aLh6d4Zo4hRpG5K

Anchored on the Bitcoin Blockchain

This document is a static immutable timestamp certificate.

Download: 1fMFVGem8WEwGAFzWkkJFd32aLh6d4Zo4hRpG5K.html

1fMFVGem8WEwGAFzWkkJFd32aLh6d4Zo4hRpG5K
c3624bbdee5ed8e6a0578fecdb39054885ee6ced88e566e53fa7ea2dd7d40749
BlockCypher.com Blockchain.info Blocktrail.com
Mon Feb 05 00:00:01 UTC 2018
List of files timestamped in this transaction:
  • xerav-fepof-divoc-semug-pykyl-byduf-vonik-bufyk-mapuf-ratob-cuneg-ducyd-bavom-goved-morun-dilod-nexax
    28kg2m45yS3RW35Rz67UNJAc99otPnEQQ6C2swK
    2018-02-04 15:53:16.0
  • xicel-kohyg-tupol-vomin-fuhym-muves-ryril-dotol-dylek-noget-norad-desit-bynil-toked-rihad-rogom-foxux
    2ckxFSWj6WMMSShrgQyV4d1F8S93KAhfekuQpNF
    2018-02-04 15:56:37.0
  • xuzeg-bazac-syfeb-pygas-mokuf-gorem-tapyt-hekip-malen-behop-nazup-kilus-dynuv-kusup-zidub-fanef-lixux
    1SCn43o2T99tYS9RgJ9o6bL272EDr34NECfCb19
    2018-02-04 16:03:06.0
  • xegis-mubeg-ryvic-sudyl-kurul-dusok-ganyb-fysoh-bypef-mimod-motig-vucyz-sokok-zovof-poziv-raneb-hoxix
    3ExuDxGK9RLgUr9VywTr39rbJVmHvqr9Zgd7daW
    2018-02-04 16:03:56.0
  • xosen-syvin-posos-vamam-dirym-vomyz-senuc-napab-cefip-bizym-bazyf-sunar-cahuh-fyfef-mipys-boget-kexax
    3Y5V4EfsVUwyxaZ1TVBa5k4J74qbz1PW1f7cKZy
    2018-02-04 16:55:06.0
  • xegig-ryvuf-luhip-tihab-forit-cenib-ryduf-fasaf-racut-saroc-fykyv-rolat-dydug-kusyb-dipog-henaz-dixex
    2TNFBiSUuznZ1xMev6u4YmUvcadTWRbcJTjg61r
    2018-02-04 21:59:02.0
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.