KeeeX Timestamp Certificate

1r8AdkUUFPWL9fz6xqz4VpkjTZ6NEJnYZ6PsSjA

Anchored on the Bitcoin Blockchain

This document is a static immutable timestamp certificate.

Download: 1r8AdkUUFPWL9fz6xqz4VpkjTZ6NEJnYZ6PsSjA.html

1r8AdkUUFPWL9fz6xqz4VpkjTZ6NEJnYZ6PsSjA
9a9833fe6350dd39499a1b27e94c69841183c54992c825c5ef1d43404b8adb42
BlockCypher.com Blockchain.info Blocktrail.com
Mon Jan 15 00:00:02 UTC 2018
List of files timestamped in this transaction:
  • xoren-voler-kaceg-kapoz-hupob-hinop-bosav-kelod-rykos-gociz-civef-temer-kubem-dudep-ciluv-gopub-laxix
    358vBCJ7JHtHVXNYcEuS6j6ih6aHXhu1G8SYvTg
    2018-01-14 14:19:08.0
  • xutom-cyryd-tarah-tokos-fycys-bynik-fobiz-demyz-zokeg-demid-luvos-dysob-bodyf-litov-degyg-zykuh-koxux
    3WJJburyMwtLVJ5yaJx9TfgMm2G8WSBt6HLNxeV
    2018-01-14 14:19:13.0
  • ximeg-puzon-dilur-sateg-bytoz-vylim-tucum-tolid-harup-hytyp-badyc-zadyp-pazok-cuzov-kesar-tatoc-zyxyx
    32GVFWXewkMVGYFuXkWgsgaFeh6tu4HuZiPWvwA
    2018-01-14 14:19:18.0
  • xikin-mipyt-cizud-gucar-gytic-pygyz-sikud-cenun-pyhec-ricif-koped-votep-buded-vybop-volyv-folun-syxax
    2Dao1aDYXonZKZ91SVXkJ6qWyUn3SDUgMgwQfPM
    2018-01-14 14:19:22.0
  • ximed-kisih-bibiv-fehud-ciryl-tyfuc-hohet-zyhan-kedik-gotuh-ridop-tyhef-ciniv-recat-zybin-pahys-luxix
    2ERzSgFjX3tJCWDySmXC1a1sWrxjXtqgBgL6CRL
    2018-01-14 14:19:29.0
  • xugob-kiviv-nafer-nasel-dekag-dihal-tuvob-dicob-nisis-mekyp-hufur-vazen-nozec-vagah-mukyc-ziluv-goxux
    2uUV1muznp2422qguPzQo1zjvpwp79ThajiGh6Q
    2018-01-14 14:19:35.0
  • xopan-dohel-goger-hyrot-canok-gykef-rurup-celuk-fasyp-hilov-dobyg-gazar-cutof-pevap-tedet-hukor-pexox
    1yZ7KAbvucTwqKFqKWc2aNrUYW4qUSKs6WM89R4
    2018-01-14 14:19:43.0
  • xosaz-gezos-fobif-ruheb-katan-hilet-hovec-babap-lacec-fabig-gasyg-zidus-lamuk-zecuz-bitec-syhod-texax
    2xFvdMWmq3nn2v6rdb5NZcUb1XX5WccW3Pfiqs7
    2018-01-14 14:21:08.0
  • xezel-hameb-miroc-rytin-mefas-bebyc-gugot-gumuh-fukor-rufyz-rysyb-donut-luceh-salol-gemeb-cybas-dexix
    1YTvcyPFjaKvTyjWAQ3ab9usQA9nFJGXq3qcvwB
    2018-01-14 14:21:13.0
  • xufig-comap-dymoc-vurim-gadot-nanat-gutoh-kovoz-fopon-gecyk-zilit-lesub-tamiz-zabeg-fivyf-cyfes-nexox
    1sokz3WpQZJbfxn6LkabA8GkGdVuzVyBnJLH5mt
    2018-01-14 14:21:18.0
  • xipov-mifom-kikes-didim-taruh-coheg-pikuv-teziz-razih-meget-kyzek-gadep-petec-felak-bunin-hidif-foxyx
    3cQDP7hakNZ7oB3YdCv1KxpbtJb1KoXW6urQiws
    2018-01-14 14:33:53.0
  • xihok-nidyz-ronup-lures-zevup-comyh-vavub-fumak-robaz-vufiz-vipin-loryv-hazih-fukyv-sabid-duhuh-coxux
    1cZ59BW6y2KwDj7GXBmfh6cZiVDZhqCDbQzNXoD
    2018-01-14 14:34:02.0
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 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.