KeeeX Timestamp Certificate

13fBQL2QGcJEPiRuXv2ceJp17tEk17mYMRduW5z

Anchored on the Bitcoin Blockchain

This document is a static immutable timestamp certificate.

Download: 13fBQL2QGcJEPiRuXv2ceJp17tEk17mYMRduW5z.html

13fBQL2QGcJEPiRuXv2ceJp17tEk17mYMRduW5z
3a0742b27c6175265aaa9eba1b6bc19cb4091f88be26fc9c93da2948946a641e
BlockCypher.com Blockchain.info Blocktrail.com
Tue Mar 20 00:00:02 UTC 2018
List of files timestamped in this transaction:
  • xilig-pycol-hofoc-bimyl-fuzav-vokys-vusyt-mikaz-kavem-cuneg-myves-netyd-docar-pisoc-cuvim-hypep-zyxux
    14H1PYjhU6PuneXQDkpBCk1iQejR9XkezNu2BSx
    2018-03-19 13:08:20.0
  • xecik-kagas-vigyr-mymoh-mazyv-bidot-tinam-lemed-zufud-nylyr-bicot-kufyt-kufup-demik-mokun-fikek-hyxex
    3SHpTtfvBRSzC8k2LRZZ2PG4Up7KgxTTzeo6o7N
    2018-03-19 13:09:17.0
  • xehod-fynul-batav-cepas-merav-sakak-gelys-zybag-zymud-pucep-lamon-vanan-pakon-muhab-hakyz-fopov-zixux
    1uwdU3KL7mfSYYj39MbwhCFqrmPQipqUGuY7F5y
    2018-03-19 13:09:21.0
  • xisoz-zuvan-vynik-gypov-saryh-sobak-cidal-fobiv-nilik-zohor-vudev-tisac-nahut-fabak-ritug-ledav-caxux
    1HEBEFsPQSimsyPUn15iGokuKuXZi2RBTm79P5K
    2018-03-19 13:09:24.0
  • xicot-boruv-hifam-kycip-hihoh-gilyz-pozit-firem-sysyb-gylut-typik-dedon-hozog-vohan-pocod-zisyt-koxix
    2NrYoRRHGjaRevcvGJMqXbHTc5Q9i7uAq9mSu73
    2018-03-19 13:09:27.0
  • xigot-dutiz-metyv-gegyn-daruf-kuneh-gegof-naric-dytik-paner-gihet-sezer-garod-recyp-vebic-fodok-gexox
    1e3wRbwQWCTMR6NRnvSookL9Vzkmx8jHN1hgFQ9
    2018-03-19 13:09:41.0
  • xogem-cycek-raral-sehas-giryb-vycit-gisob-luzyf-dymun-capah-bekik-vyzak-ranin-dyfek-sodar-zociz-paxex
    1rN5br8HGFrsg8JLUND7ynEefaS1M3DQBRJUxy2
    2018-03-19 14:24:06.0
  • xufid-kyzuh-hygaz-setaz-bebog-zocec-vacyp-secyc-zofat-gafik-totol-dyzec-tihos-medip-cubis-zyrod-ruxex
    2018-03-19 16:37:52.0
  • xokig-zudob-cihyr-taver-hedym-hivar-kunyr-meryn-napab-naher-raral-tazan-nucoc-cupuh-hylok-ragan-roxix
    2018-03-19 16:50:10.0
  • xobam-madut-zuris-porym-vabad-gisov-hyneg-zatuk-zodam-nytoh-ryhaz-mogub-geget-lusug-vukeb-nesul-paxox
    2018-03-19 16:50:14.0
  • xifer-lenim-sohid-rilof-foher-zunyg-nelap-pasin-nibub-pofyl-rivod-sufih-mepip-cozeg-fynib-nyvec-pyxix
    2018-03-19 16:52:05.0
  • xiteg-tulaf-tudyh-fisol-muhes-mizyr-cidyt-bygin-kytyf-naruk-denib-tecyb-lifyb-lezah-corel-foher-tuxax
    2018-03-19 16:52:09.0
  • xenib-heres-vyrak-dysik-zudof-hukuh-bymoz-hyrem-mufet-focur-negas-rekek-mopic-kurin-mafit-dyzap-dexyx
    2018-03-19 16:52:29.0
  • xeset-tireh-demyr-dyral-lykit-basab-myzeg-dufiz-pytez-hazed-pugyr-mutul-tudoh-pepoh-virar-zakam-mixyx
    2018-03-19 16:56:50.0
  • xuric-zatol-rufek-dikoc-cymon-pepog-lyzug-telem-lacor-ryvus-sumas-kizab-pohif-gycot-peruv-vezov-goxax
    2018-03-19 17:00:31.0
  • xopof-butyh-muhes-puged-fifyc-cavul-kytud-lohop-fivyz-zehur-bupef-resug-sugyt-matiz-mavyg-mavih-dexex
    2018-03-19 17:00:34.0
  • xipiz-lulop-canyd-pylyv-husug-fitup-vuped-cypoc-fuhod-fifoh-pagod-lylol-zoget-finiz-hehen-kagah-poxux
    2018-03-19 17:00:38.0
  • xuzig-cesov-zenog-syrek-fopyv-zigoz-nykib-kudud-hapiz-macom-lemom-dazut-vuton-bamuc-gesin-fytud-hyxax
    2018-03-19 17:02:17.0
  • xilat-tezup-kagek-selyc-vatif-dugag-gyrut-gyfov-gozor-ryhan-nirut-locuz-semyf-zumek-zivyp-vyloz-paxox
    2018-03-19 17:02:21.0
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.