KeeeX Timestamp Certificate

2dfEbMuj75uR1nnPxfcs7UMgUvpCqZCTD83hhqA

Anchored on the Bitcoin Blockchain

This document is a static immutable timestamp certificate.

Download: 2dfEbMuj75uR1nnPxfcs7UMgUvpCqZCTD83hhqA.html

2dfEbMuj75uR1nnPxfcs7UMgUvpCqZCTD83hhqA
af97ad8b92a788dcd70286e115f3b3e4442b2068f659a34ce129df85509284d6
BlockCypher.com Blockchain.info Blocktrail.com
Sat Apr 07 00:00:01 UTC 2018
List of files timestamped in this transaction:
  • xipas-siser-leved-cukem-kupig-huneh-bitas-vezil-tylun-fobig-bofog-vibyn-vufom-lylun-nopar-bisel-tyxex
    3KNeswEhx53J75HjBZN6HcA9oHTrYbFjyk4bRzZ
    2018-04-06 12:57:32.0
  • xecoc-suzuf-bytyp-kanar-mupev-gukev-byvek-durud-kotos-ladot-ranuz-zomyb-lilev-bazyb-cidev-tiryr-vyxox
    2WNV7kGbXV5tLQPMj4uPXcfsUhHp2t79dkFBuPM
    2018-04-06 12:57:34.0
  • xomol-syfed-ripum-zupyv-typam-rohil-nutiv-nurad-huvek-cesih-fymyn-zapym-rohes-ruzyt-tekig-netyc-moxax
    2QUemEZev6Wt8rJKp88rC15PT4qWpcHQLbVF6ZZ
    2018-04-06 12:57:37.0
  • xuzik-cygor-kopev-fytoh-funyg-kegyz-kirum-nuleg-hozek-ryfyg-nikez-bycyz-heleh-lipyt-hydop-vysud-tyxex
    1Y6pTEVMUYdXqKds6XngC92Pb1ttgPYP6F7H5gT
    2018-04-06 12:57:39.0
  • xunif-solup-givub-revud-hizan-gotel-fofal-vytam-voluv-tigov-kybap-celoc-heryn-difir-civep-ratyb-kixox
    2dfmVhfRVC6akdN8iDiwyqQ5dNeJeKtox4tkRqC
    2018-04-06 12:57:42.0
  • xumeg-mifem-ruziv-bavul-zahym-tugah-duvok-koboz-nokyn-bycih-fyhug-hacog-cilum-vokec-cecyb-tykyz-moxix
    1KbvvvXk95jLc7KJmAoNmA598sErm3ypa3NC5Hi
    2018-04-06 12:57:44.0
  • xomez-senup-rutev-gasac-fyfuv-fizyl-havut-potar-sityl-mosag-zovyh-mucis-vazes-fydyb-henim-kokap-coxyx
    2018-04-06 14:57:40.0
  • xeseb-mikev-kimys-mumiz-sukog-noniv-symus-pihob-gilyf-takib-gapen-padyt-hifyg-sydip-gubub-hyref-lyxex
    2018-04-06 14:59:48.0
  • xesep-tavyd-mufyb-cesus-fekih-metyc-zuzah-gopul-sikuk-kuzob-zanib-cifal-tukom-bisez-davyc-vuvug-zuxex
    2018-04-06 14:59:51.0
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.