KeeeX Timestamp Certificate

29C55UvPKpKopfspUi6dtcbrL3mTHkcS3HdWxfQ

Anchored on the Bitcoin Blockchain

This document is a static immutable timestamp certificate.

Download: 29C55UvPKpKopfspUi6dtcbrL3mTHkcS3HdWxfQ.html

29C55UvPKpKopfspUi6dtcbrL3mTHkcS3HdWxfQ
5f95fad54f37b5b968e1b573819213bc83efa986be0a11b84ebaa8ffa808f6c7
BlockCypher.com Blockchain.info Blocktrail.com
Sat Jun 09 00:00:01 UTC 2018
List of files timestamped in this transaction:
  • xucov-zihuk-popyt-mopuf-lyzib-hukeb-cakur-mefam-buloh-bofyr-fuzam-dydot-kocof-vogut-deteh-segys-muxux
    1wJMdUPoHndt8mFHcUmPfCByMSX7vGCKz4BrS4i
    2018-06-08 14:26:22.0
  • xemal-gudyv-gabob-ruvid-filuc-kuhug-kikyv-hilyz-dytyk-nobok-myped-cohop-vinyh-vemon-mivuf-lynah-zyxyx
    2C6bahHQiEzmWW1sNsPP8kQUoYaUqzgchsJREWW
    2018-06-08 14:26:38.0
  • xelaz-lycuv-rulum-zyzih-sigym-redoh-vafig-zanec-lovit-bifyp-gudam-cuhof-hahor-pokih-pygid-gufot-suxax
    1gLQ7eUp5NuNKDWWDeE8g4dzXtXLb5g56DpeAhv
    2018-06-08 14:26:55.0
  • xinov-zekul-fumek-ketak-mycud-kesef-kunyt-nyzup-hurav-vidof-pesel-mykec-dodar-racur-cepig-nafec-hexex
    1EcKL89TQibznGeZqjiLURZ5cC42Vt7bweBbM4E
    2018-06-08 14:28:05.0
  • xubop-rezed-ronon-gafiz-dytot-noned-gukuc-hutyn-gagom-lizez-codyf-gabyf-telel-gefin-hyhoz-vekih-maxax
    2eWw74za3VpMuuKtVxcahSXFePcVP4PPNgRyd3C
    2018-06-08 14:28:24.0
  • xufem-vubem-tifed-lopog-bihah-zarid-givic-rarag-gizys-cuguf-suzuc-nubid-cokin-tyfaf-fasuc-penos-texyx
    2Rdq7JDmc8VCNWeYAYymwEEUEeNTGNC3oLF825Y
    2018-06-08 15:10:38.0
  • xutiv-kevok-mymad-gygan-sidev-niraz-kuhys-segyt-vocak-vytig-segud-bafen-myfyk-gypac-milis-degim-gexax
    2gRo2CpcWXij8BZnhyMNei7cDqjYqdqDZerzkj5
    2018-06-08 15:28:23.0
  • xives-zuhod-zobat-zifep-hahat-suveg-mepes-cagol-pores-mekoh-baguz-pucyb-setog-ciryc-hikop-pogur-hixyx
    3Md8CH9FpCayhfSJkKJMuDnuwmQoa4wYdRAWb2u
    2018-06-08 15:41:29.0
  • xifin-cidyd-zages-lohyc-vudod-zyfel-nefyd-lisik-hytem-fakeb-mirer-tyros-sogoc-fazav-pesop-byvad-vyxax
    2cDE2XFrRw7r2a48aFNXLramFsgEBZHu3JjjJ56
    2018-06-08 15:52:53.0
  • xecih-cygad-tudof-mileb-pekep-pacig-vatop-pivuc-hetem-senet-lalyb-fyzym-dokun-ruvyf-zicuk-kosag-tuxex
    1VKJ1PJESSQh3Mxtx44aLsPpFANWxnrG1WMZYxD
    2018-06-08 17:22:23.0
  • xutim-holuf-runys-pataf-gytul-dodah-pizos-mamef-zivut-vupyb-nahab-cubyt-fefup-fetog-zedih-fenom-gexax
    3NqcKzm18Tk2LSJBANUKTktsFjeHsXLccHvVQ3L
    2018-06-08 17:22:25.0
  • xuhod-fuhiv-rizir-gadac-zyfyp-rohun-zefid-hovyh-tebeb-timum-geker-lycol-lusud-dudok-cycit-murik-myxyx
    1Lphppwm55QztBHGeFcwyg28UoHnfYp1b2B63dD
    2018-06-08 17:22:43.0
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.