KeeeX Timestamp Certificate

17ZuBTc9juSwWAkfbBs7tmGxU4jzRFTs5iUa6ig

Anchored on the Bitcoin Blockchain

This document is a static immutable timestamp certificate.

Download: 17ZuBTc9juSwWAkfbBs7tmGxU4jzRFTs5iUa6ig.html

17ZuBTc9juSwWAkfbBs7tmGxU4jzRFTs5iUa6ig
a23dfd4651a9f81c5d3401a421377d9fb47eba4aa3aad2abda9a95e233151c45
BlockCypher.com Blockchain.info Blocktrail.com
Wed Sep 19 12:00:01 UTC 2018
List of files timestamped in this transaction:
  • xufiv-zadas-vycoz-ninyg-pehuz-zadiv-pisyz-dogyf-hyled-gukom-rypes-pysit-rohen-domad-ripad-zopef-ryxex
    1m8pNidDvoX5Xy5Tuofa9n5Ba5P3Xg7yVNep99c
    2018-09-19 06:15:48.0
  • xihav-nevib-faguh-liket-tukuz-nemaz-zepef-cyter-finoc-gelug-gymaz-nivoc-visul-fivem-pokyt-bydit-luxex
    2TEof2g7L6pcgpJLFEQoM87picd8ksWyz5Pd9yJ
    2018-09-19 06:25:28.0
  • xiroh-ziroh-cynoc-sycik-cosoc-fuhof-femom-gavat-pilur-bypyh-zozig-bolic-byzum-tyzur-gasyk-pyzot-fixax
    2pcw6D7khFp7WZLVUBjcG1w1KmaxLDVNpifvdXW
    2018-09-19 06:25:56.0
  • xomol-zifot-mebyb-saral-gozod-tifyl-domum-nuluz-rybec-tykiv-logyt-vaber-lanot-tabol-mebum-cobab-boxix
    395G4QE3iHJHRiG63moH4bNEkHv1C5n97Bed6H5
    2018-09-19 06:47:05.0
  • xehav-vyzan-fomov-teryc-cizad-veryk-mafuz-mareg-fifef-pikoz-tacis-pynah-zaduc-cukav-balez-dozic-pyxix
    3RXvPBTEcMttXVVN6b6YtbUmFgdomPBo1EuvsmT
    2018-09-19 06:47:22.0
  • xocof-sypet-dymos-kysat-lalos-daguc-batet-cesoz-becac-lepuv-sapav-difoc-zatuk-niryk-cokyf-kykin-cixix
    2bxo6YSecfYXbN9VZSSGz1k9osQodBHc9XJrW5Y
    2018-09-19 09:03:54.0
  • ximim-suvec-cokit-fazyc-suluh-verav-bupam-huryd-gyfon-tokip-ruhas-ryzif-tyvug-podac-fovin-gihuc-dexax
    1cgXQwgKGgUoTjjtEXREsQxSZNnXeAQ1VUFjdxb
    2018-09-19 09:04:20.0
  • xufik-gadyb-nysom-satab-fikeb-syhun-numac-gitub-hukam-lyzup-dotyd-risat-tusir-zohep-kotin-gipap-poxax
    3CWyVFhi1sL7FRrM1nu1nJy1jUmmPcdt3b27aEj
    2018-09-19 09:07:06.0
  • xotil-zuzob-decyv-bisef-neryz-tefed-nydop-sipah-rosab-mudyk-mipoc-hynuz-gifyf-gyrus-hovyt-sanyk-lyxix
    2itu82BNWKngPgGJ8DKwrFGSq5skxtocdEj8qpX
    2018-09-19 09:24:51.0
  • ximik-dotef-hokok-kulyb-deveg-nucyh-vyfev-sudys-vyrin-kosic-logyk-gygos-tarem-dumom-lytod-cofuf-gixex
    2VNMdPpHYBnuf6pAbqBSLGr8Q46mkQfeYBDeLrc
    2018-09-19 09:25:28.0
  • xofas-zapit-sobap-hopan-rulet-setit-mihap-viben-zuduv-zupiv-nyruk-sirig-fypub-busyh-tenov-parok-ryxix
    3ENiaJVpgMWWDu4A1jV5btpWs74jhgfbqnga7PZ
    2018-09-19 09:39:20.0
  • xenen-gafid-celok-gudus-sygan-hovag-covyp-cihet-gyvar-gakeb-lydec-daper-locab-nipel-nubyb-nefih-coxix
    3VHYZNsBymgULKA9BTQxrMnqaX42EztGsDYjtoV
    2018-09-19 09:45:45.0
  • xebaf-kegul-pubuv-zipup-pefud-zitin-docon-tydir-lalic-rozik-gymog-vaheb-kadys-cahis-kumuv-vygot-gyxix
    2018-09-19 10:22:32.0
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.