KeeeX Timestamp Certificate

1uTMCTMVQoJrf9fdmRbXkES7ofLzaCpeCSoeork

Anchored on the Bitcoin Blockchain

This document is a static immutable timestamp certificate.

Download: 1uTMCTMVQoJrf9fdmRbXkES7ofLzaCpeCSoeork.html

1uTMCTMVQoJrf9fdmRbXkES7ofLzaCpeCSoeork
0cff0bd3777d4d2f3da11051158c64501c28098e7c4d0f9e22236a523953e648
BlockCypher.com Blockchain.info Blocktrail.com
Thu Jul 05 00:00:01 UTC 2018
List of files timestamped in this transaction:
  • xuvet-kehug-viben-kucas-mehoc-bucor-lacez-givyb-pirov-hazon-robad-vumuf-tabeg-zokot-lymuc-zekyh-muxix
    2018-07-04 12:06:02.0
  • xovog-gukis-tokug-dufyg-vorom-lagoz-sadek-titop-ruzil-dipim-sorar-tumiz-lafic-bobup-mitot-lalug-tuxux
    1zSSnr3bz352bBxZyHAUSJcMUFgs66PufhVKPf4
    2018-07-04 12:13:55.0
  • xitiv-rydyz-kubel-mosek-taneb-maguv-vitav-sisop-refim-lugoc-kizob-hilic-zykid-docuk-goroz-fufol-cixox
    1oXdcab5cX766xsMqD4zQyLyK2qP8MnogoFtmRn
    2018-07-04 12:14:11.0
  • xenok-mygof-sucog-ceryc-metan-fesot-tymot-nuval-bizad-dyzav-divon-matuh-cehag-rehud-fakoz-herap-lixax
    2px54M6rsdLzqq7erNRQyDhMcn9uD19EDDbLmoP
    2018-07-04 12:14:38.0
  • xurav-vekab-hicyr-holip-tikac-husap-betof-madar-cesev-mubad-rusuz-mygin-bovut-hutul-vimid-tepak-laxex
    3LDWQRcXMmDnCkbqkWMHoN7qUCowPAvVrRSJGXA
    2018-07-04 12:14:47.0
  • xoben-tofav-fybip-gigoz-visar-mygut-kofam-pomih-pihat-lavyl-datak-vasyg-ropav-zezid-gidac-sekam-zaxox
    2018-07-04 13:46:22.0
  • xedek-gotus-pinos-putur-duceh-pasyf-votyz-muzec-fygof-govod-tupif-tabob-gabad-vulac-kimyb-mafav-paxux
    2018-07-04 13:46:26.0
  • xekih-mihoh-sekys-bykuh-lohyp-safev-momiv-bynop-zocov-dahoz-donid-rinul-lugol-govod-zuket-satoz-tuxax
    2Hx6qUmZ4hj5zDGgFsaKznR9NRvxWW6DFgEeR3L
    2018-07-04 14:56:04.0
  • xonek-vadib-tuhub-fureb-kiter-kymav-rygeb-desod-murik-fudod-mybyc-cunev-cekur-dosit-hetet-nozas-kyxyx
    2CH6vi6hXUzzjQe6fERcJmB2razgyPx5VnmHDpz
    2018-07-04 14:56:26.0
  • xefed-cuhyl-gusir-dodyr-fohyc-sufup-vovob-rifov-hazom-cadyb-hunut-zoceb-fihet-kofem-tarap-riruz-paxyx
    1WGfpxmWE3bJZXrCy8FjtzecVBf3TM1peZ1byST
    2018-07-04 16:57:26.0
  • xoteb-fycyz-rytol-linih-zulec-lycir-dofot-furin-ducag-pugav-luvur-pukom-mimit-nysyh-kymem-vaduc-poxix
    2sz1Fmof2xqrmUFi34wKahinDrZopSFW7WgsSx3
    2018-07-04 19:52:54.0
  • xekah-pafil-pikev-buzyh-dafyg-semuf-tupyl-rover-peves-logiv-rilys-macur-lehik-dilav-vulet-didyl-cuxox
    1ZMwXKfKaJmrPKvZdzSuv3GM7QuVfz4q8M4NtAw
    2018-07-04 19:52:58.0
  • xebac-sydyf-luzus-tykuv-cypyl-lyfeh-dodyk-lolug-gyguk-lomur-pakez-pigiv-daker-tovyh-nipuv-symyp-fuxex
    1fb4n17uyKZANahktZYsqTJbok9hbNt4rLDbVcZ
    2018-07-04 19:53:00.0
  • xivic-siduh-ciluf-rilim-terat-selyh-mifut-pozec-forom-fypop-hytap-rebyg-tofus-boguf-sykep-safyr-lixax
    1UpcEkjXutKvk3p8kjBrtSaenLKFEMwbX3jddqh
    2018-07-04 19:53:03.0
  • xucak-rufif-luneb-tozes-bivoz-tapil-kotim-sumoz-pihuz-fomug-caker-budin-vatah-fyzaf-huhyt-pysod-taxox
    3Ce8xPtA3c9BSC2vT4BTj8J968hvPzojMVTRLtU
    2018-07-04 19:53:13.0
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.