KeeeX Timestamp Certificate

1BF5pzkTU8G9XLqvqRYimreg63FsXKojYE7BhFX

Anchored on the Bitcoin Blockchain

This document is a static immutable timestamp certificate.

Download: 1BF5pzkTU8G9XLqvqRYimreg63FsXKojYE7BhFX.html

1BF5pzkTU8G9XLqvqRYimreg63FsXKojYE7BhFX
92363651bbf6475f42194bdf46c5f76932bbb58e36a9099935849511872b73de
BlockCypher.com Blockchain.info Blocktrail.com
Thu Jul 13 18:00:01 UTC 2017
List of files timestamped in this transaction:
  • xidev-gibet-povid-dakyg-mihid-bymog-femud-vyrar-zyzuh-viput-pucym-zevih-zasyc-ralet-dyzak-nivyb-nixax
    2017-07-13 12:37:42.0
  • xuzaz-zupet-lumyd-celyg-kyhyt-mepub-zetaf-hobez-nabas-dygac-diput-fyceb-mibas-pacyf-dyfyc-recit-foxex
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    2017-07-13 12:52:08.0
  • xebiz-lumuh-koryg-muvig-nekyv-lacih-rygeg-kadys-bocog-sogok-cubif-lizeb-tific-tabuz-tylyk-zuzaz-hixax
    2017-07-13 13:08:59.0
  • xesob-cuhit-febid-roliv-cygeg-vacik-folyp-putab-hopyn-lybuz-nehac-zupal-camek-mybyc-rizak-vyvab-caxax
    1zVknjq7ArX73L5kWZmsbx2GVqzRgmd2p5JydPr
    2017-07-13 13:14:42.0
  • xehid-gypyf-pubak-sunet-damef-tetoh-denoc-dycym-konal-makan-redez-genak-gikur-butat-pefyf-sykot-hexyx
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    2017-07-13 13:22:46.0
  • xiloz-pilyt-higyz-ryrud-sucoh-rumuh-zumih-likes-facog-fidik-veviz-fibod-zotyg-fytuc-fohib-segyv-taxex
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    2017-07-13 13:31:35.0
  • xenis-vuden-lefon-syvuf-gecad-kopaf-bemem-setup-papub-mubot-conef-nahah-sefez-mifym-kecik-mumof-gaxix
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    2017-07-13 13:33:11.0
  • xisov-syvev-mykaz-bolef-cusif-hezub-fufoc-pehab-fyzab-nyzik-rolup-cyvel-nyvah-legak-cykyp-letad-taxex
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    2017-07-13 13:33:20.0
  • xesip-ruhyz-vynur-pefen-kofyv-gikyv-kekuz-fucav-horon-cosuz-pecog-tipos-taker-zefut-melul-titir-gyxux
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    2017-07-13 13:59:39.0
  • xudek-tavum-ropab-cudyt-synyf-tumun-pusap-zydyz-vudac-deref-lehul-livyg-gumeh-fyzyr-takob-hanec-cyxux
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    2017-07-13 14:10:37.0
  • xivad-gafof-mucif-buzot-dituv-pofor-vedat-vaheh-puson-gysut-hihoz-ravom-guhod-zymes-nogal-fozif-raxax
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    2017-07-13 14:12:21.0
  • xifit-hihoh-kebeg-cevag-gabug-rogeh-mucah-honag-rycil-safav-dilad-muryp-pimaz-silev-sydeh-milyg-sixux
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    2017-07-13 14:19:48.0
  • xupik-hekus-semeh-tecuc-damir-dobed-vypuc-batec-tizaz-gyliv-covec-tedyt-vemyk-kezov-leraz-nezyr-coxex
    1AbNH9mnpCCVTqrm8QCida1vBZgFXnsUkTgnAQD
    2017-07-13 14:25:46.0
  • xecad-bimyp-romyg-basih-lytuf-dukek-sibum-nezif-mutub-mugun-hukyr-benat-fupek-sasyf-gacyd-lynup-ryxix
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    2017-07-13 14:38:02.0
  • xozad-tasih-napiz-locek-paheb-hufin-parid-nogug-pedoh-gusin-capit-kenyk-visyt-leryc-kakad-cotes-zexex
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    2017-07-13 14:38:06.0
  • xuvol-zemic-cyrab-bylik-zusof-gikin-fimer-halim-mapac-belav-gavis-fazal-sigum-fukyp-fopul-teryk-maxyx
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    2017-07-13 14:38:10.0
  • xocek-nobid-polol-vikit-mavif-kocus-rezeg-tyfut-fimiv-zafyd-vemoh-kagam-mykic-fuvof-fireg-lizud-dixox
    2GmsbPw4FRzeJVCD2HaKEbA7XC6G2yPEG24BATV
    2017-07-13 14:38:13.0
  • xipet-dudum-kofyh-kumab-kesuc-dobib-lynin-ginel-kevyt-sabub-hugin-kylup-mymir-moner-tufap-lysug-dixyx
    18CErYwBY2gPxL7vMDw36BdZwdJzFmykpMxXvai
    2017-07-13 14:46:48.0
  • xobog-zifyp-fuzot-bihig-nemym-dygis-dimub-cotob-hilyv-tycuz-busom-mypar-nevyf-nebaf-pumyp-lelub-gexux
    2rTT56J8PLp2zdfmLPnSuvBrAiHXi5Rm42veU98
    2017-07-13 14:46:49.0
  • xuhop-fapyn-lohon-tezog-hykug-bacek-pezyb-nydic-tyfyh-sipak-lorin-kegic-sytig-barez-tarib-bopel-pixix
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    2017-07-13 14:46:51.0
  • xifon-zuvyl-picun-rerog-kitat-zisut-dacet-totyf-pevul-zasap-lavir-lasav-rafes-bylam-fimyt-memit-saxux
    2xsuJrfRrtEskvtGtrDZDwnMjU5CDscRHxgAvsn
    2017-07-13 14:48:16.0
  • xugoc-zubih-cavem-divon-cisob-fagyd-vugid-fehyc-sabyz-pygyn-gybic-liror-besiz-togyz-haril-datuv-doxox
    1Gc1tY15e4aHWgyrLTiTUk7dEuRYfLNfduzykF2
    2017-07-13 14:48:20.0
  • xebor-hufyv-pybek-badaz-bevyk-fudam-zetuz-gosud-seboc-cyvim-lilub-cevyz-biluk-mized-tidyv-higel-cexax
    3U23uxfAzfvHJbYZ7RwymbQh7az94TZCNuZSu8n
    2017-07-13 14:48:40.0
  • xihav-cymyz-mahof-zekal-zezit-gugef-tikor-fipoz-hehed-huhev-kabyp-ralun-teban-cebiz-puhaz-vocun-byxux
    2r2CjyMvWTBHTZxVbpf3KZ3qU2c67J9ibX7Qsn2
    2017-07-13 14:48:45.0
  • xirad-lutir-gitir-lahif-cufos-redab-dusum-hinut-bekif-byreh-kapah-vitok-syvyg-baluc-toguz-fugyg-cuxyx
    2ZMZH6yXmcsGcyphCGCELCrq9dPnbcdLSwuh1Tb
    2017-07-13 14:49:11.0
  • xifak-lufer-tidic-nasin-mopih-hovil-norun-gidel-gurog-mynuk-ravan-zefum-cyfin-fyrug-hubed-picin-doxux
    2017-07-13 15:24:39.0
  • xigeb-rotul-nalid-liser-zovut-lakiv-tyteh-bikut-pufuh-zekyl-delyk-meluf-lyzit-vafol-tyrym-ziviz-tuxox
    13pnrACZFdRf8FTLBfeZSqMNMSPKiMTT8zfiTPt
    2017-07-13 16:12:37.0
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 6 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.