KeeeX Timestamp Certificate

3d5qNvBNHMo4LUi8A7BLqQLWmFpMfqbw3F85TqY

Anchored on the Bitcoin Blockchain

This document is a static immutable timestamp certificate.

Download: 3d5qNvBNHMo4LUi8A7BLqQLWmFpMfqbw3F85TqY.html

3d5qNvBNHMo4LUi8A7BLqQLWmFpMfqbw3F85TqY
ef881ac9d16ab3b09eb0f7c97abaab8c64ef8fc99755cee62c5a31336aefb961
BlockCypher.com Blockchain.info Blocktrail.com
Sun Feb 04 00:00:01 UTC 2018
List of files timestamped in this transaction:
  • xepos-haceb-togah-nycip-lakyb-suluk-sydor-tenob-duroz-gareh-raton-famyz-pidib-fylir-licun-maceg-zoxex
    34sqxyZWaSsjg6euvkMHDdT8jziJZj3FYTQ8m1Z
    2018-02-03 13:02:16.0
  • xipon-manuc-togit-ryviz-tepuh-capes-tozad-pevaf-byhiz-ludok-dusil-syboc-sifyd-rarod-vydym-vukop-nuxux
    3b4VTr6WQwUXTRD5e7tPCweN9wYzCfkzbeLhGVT
    2018-02-03 16:13:41.0
  • xetes-gytem-dozar-volef-nypub-fuvug-carin-gyvyl-kobik-gibes-firud-zegyc-kadyr-buhyd-medab-tikup-myxyx
    26NtA1Xtab5ya6RXWecmViE2s11L4bAQARtWiH7
    2018-02-03 16:14:06.0
  • xupiv-patot-cymyz-zylev-pered-vazir-rezik-gafov-vybis-nypum-ficub-talyk-hihoz-cudoh-fodom-hiryf-vixox
    3Nj6QHV75XVp7Y5mZnBTDfN9bMHBnqE1VxfCuUT
    2018-02-03 16:14:22.0
  • xubed-gomyl-pevyd-mazib-teryr-bukeb-mydec-pihek-nucan-zosac-rezok-dusak-magon-semot-bazyz-suzef-daxex
    1uNiCXrNGqH2gZ9VAz8c19rGoG46Z1txkQ9dsgs
    2018-02-03 16:14:40.0
  • xezef-nyfan-mativ-siceh-zukam-dumuz-bivom-nudud-sacuf-hosev-zofup-zegok-lavuf-keput-sysag-dosiz-toxix
    2J76cghYTHHR2Tw1hHZ17S8NyHFjr1ycQ6TriPC
    2018-02-03 16:41:01.0
  • xisac-dukug-kofan-taluf-kusyh-vynag-fatic-lykuk-dizef-gyruf-gilek-sukef-minog-zenyh-fedod-kyful-mexix
    2kNcwUTCPg4m3KagcFTnQzg67Hpxt5q1yAUrhyQ
    2018-02-03 16:41:22.0
  • xuzez-zytyc-zetyg-rorip-fanis-lemum-hogeh-hival-bohup-fobog-monuk-vasec-sybic-funed-megib-zymad-cyxix
    2018-02-03 19:07:42.0
  • xudag-duzyg-defav-vekat-gazat-bacal-vytan-gasab-datyr-pacap-nefip-lezym-dicyh-nuhep-sekop-girod-naxyx
    2018-02-03 19:07:52.0
  • xekiz-mumaz-ceruz-gihyk-zatil-sokac-muzec-bizev-buguk-byfut-febab-lacen-sytyz-kagak-vybak-bakeb-dixix
    2018-02-03 19:08:01.0
  • xinis-vivef-dypak-cuhis-mylyg-nebol-sopah-symud-bopig-rorek-zumud-nydep-hebob-nomyl-nedyl-zusoh-vyxyx
    2018-02-03 19:08:08.0
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.