KeeeX Timestamp Certificate

33Yo5sg3qRsydpBxohRmh4mbbwHvYTsshthsT8u

Anchored on the Bitcoin Blockchain

This document is a static immutable timestamp certificate.

Download: 33Yo5sg3qRsydpBxohRmh4mbbwHvYTsshthsT8u.html

33Yo5sg3qRsydpBxohRmh4mbbwHvYTsshthsT8u
9faed04f4f3d3a31d6bfc30fc1df4c5935e5455ec41fa3300374e8ffb728e8a5
BlockCypher.com Blockchain.info Blocktrail.com
Fri Oct 20 18:00:01 UTC 2017
List of files timestamped in this transaction:
  • xikiv-lyfas-dabob-vozut-sulab-tanyh-nahef-rufon-sofek-vumak-racyz-fuzok-syhym-rabyg-doloz-dafit-poxix
    2pKzH2sjgcmPRGGv6aoxhT8sHy8QKAjitBWkVsN
    2017-10-20 13:00:19.0
  • xocap-mycuz-pigos-sagyt-lekuf-soter-gorof-bovaf-behez-mebop-bahad-bizaf-sesum-padef-vuzar-larev-taxyx
    1T4rsWABCANV7aWqzq6CUVFH52hxJMSsrEqaGzq
    2017-10-20 13:01:53.0
  • xetof-luryf-fepap-bacoz-kypip-podub-nyzop-zufaf-recyh-govin-byvym-mizom-duvub-kuzuc-cozac-corah-sexex
    3J9KAooKv9tDiXLwcQPT5Rg2aESayzdAh2E3wDA
    2017-10-20 13:02:06.0
  • xenov-letop-todaz-mekab-zuvuh-pefyn-vuras-nadiz-vikek-sanyc-dohur-tacad-fobol-zylup-cenar-kodag-guxux
    145ida3JumJLLyXdVK8KeBPvkpyQ92eRhLrEzKB
    2017-10-20 13:02:43.0
  • xibap-kehet-fycug-gufus-sohos-myhir-fubyp-vutyc-huped-sebuz-vapev-podig-didum-hotif-zesig-cegic-cuxax
    2k2DXi7TTLKJBMbHkLLYmLjTxo8P7wxGEVTYHbN
    2017-10-20 13:03:06.0
  • xokef-huvoh-bemyr-fevib-rikok-vycin-laluf-holaf-lugiz-mopah-hyzog-rysop-sodur-cepif-perop-gunoh-kuxux
    2MPkWF46LDxTDs8ACxgN4k4Dg2dLZQvxs3T63Yb
    2017-10-20 13:03:28.0
  • xeziv-cyfyb-mabyk-mirun-zapil-cypig-leban-macah-zenem-rukon-mavoc-kelun-vahid-dyzod-tetak-pagah-dexex
    1nxnM6MpjZKeGNTF3hjw8Sd82DzVmLX6WjCX2Fu
    2017-10-20 13:04:04.0
  • xinim-rosyv-giged-kubek-kyhov-ferup-vopop-kygyz-vimin-femog-rocil-gokod-gevuf-vucus-razyn-ricer-dyxux
    2SwAuzvVuVtfpeJ1b29CQnGVynrn8tqHTjLGtAX
    2017-10-20 13:04:38.0
  • xudah-tupok-dodap-vudop-zecop-mygyv-mocan-noveb-capys-lynul-gedyr-fylof-nuveh-sivil-fenog-kihav-boxux
    1hM9Qt5CBjPqhK5VmznxuchLQc3mq9ekHDsutZD
    2017-10-20 13:04:44.0
  • xevem-nufol-mufeg-sizuz-fudub-peryb-seryl-horel-gezul-nyner-kafot-suzed-neluc-motuf-nuzug-gazar-goxix
    3VcbaE54UmMvKx4kVwMQ7UBxwPcPTU9rV5xArx9
    2017-10-20 13:04:55.0
  • xivib-tuzin-suzim-lanit-sumoz-fobov-dosic-depol-fagac-cotar-fytub-lirud-biryd-saten-kyceb-ruhof-pixyx
    2017-10-20 13:37:42.0
  • xirim-bokar-fuges-foker-copin-sotek-nazic-tilog-bogel-zyvyd-hesef-kelah-pekyn-ryvum-nigim-sisug-hixex
    1GxpALzVyUAgjHcLEx3rJHz1pyV4Xw9PR8CKjPM
    2017-10-20 14:19:02.0
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.