KeeeX Timestamp Certificate

3ZmwwrUBMFZyAmG5qrBtJ8v4W9fKFw79Zks5X3a

Anchored on the Bitcoin Blockchain

This document is a static immutable timestamp certificate.

Download: 3ZmwwrUBMFZyAmG5qrBtJ8v4W9fKFw79Zks5X3a.html

3ZmwwrUBMFZyAmG5qrBtJ8v4W9fKFw79Zks5X3a
deda8b45a43fbbbdeea4b3fb368408ceab56cc1c40adc5697e834d29ee360020
BlockCypher.com Blockchain.info Blocktrail.com
Tue Feb 06 12:00:01 UTC 2018
List of files timestamped in this transaction:
  • xopor-rofam-muvok-pikeh-mahar-katef-zogoz-recym-gifon-cuhyl-mesed-fobed-mylul-tylol-leduv-tabet-myxex
    3DQFRLvm2CeyqsixzMticjsfjs5TnJT6TBSLCJc
    2018-02-05 13:29:42.0
  • xusop-sicup-hatud-pabyp-dadac-galur-gevyp-citit-tybec-zorep-gamod-volip-popaz-bodyf-husul-diped-huxox
    1j6YLV3e3eXEfiRbjZJ8UsTFpbCSUcciXSQSEUp
    2018-02-05 13:33:44.0
  • xinap-kevul-dypyc-kysub-vavip-febyg-kipik-huzen-tumif-fiduh-cazaf-nekop-zomig-rolip-syfas-zugyv-fixax
    3AmqCWtWzStdMs5LMwQrBJ3k8BrYmFpYdQVjx58
    2018-02-05 13:33:46.0
  • xukif-pisic-mycin-zafez-vusoc-bovon-poraf-fopyl-tudyc-damib-sinar-sonof-buhyn-befob-gokap-gimud-guxyx
    1iG19zmNDTNmuVAjG3MwD5iRQ4XZLDMiHmudDAn
    2018-02-05 14:33:00.0
  • xozob-marat-sotyf-vevec-hugog-relyv-vyfab-nilan-pahub-robom-tymef-bodup-byhuc-mesol-fibic-niluh-tyxox
    1ZBRxW8BB6m5AmLb4R7xL4cYZLuLbW8B6ZRWqw7
    2018-02-05 14:33:10.0
  • xomip-cykak-kafav-lahyh-sehyv-padod-lelad-zyvez-valad-gefev-tudak-vyfas-dohyz-damur-torih-tymoc-cyxyx
    1Vc6pKx5a9a3FW9y97tAgJZpGhxPGwkWUEnDowk
    2018-02-05 14:35:58.0
  • xiral-maris-zatod-hasum-lezav-ripeh-rapar-nilim-nenuv-lakeb-kykuk-bemuz-rimep-desuh-ludol-rinis-rexex
    2i3LhGybbitAqKc3zkxMxkTghG6AQ2zgxc2SAnE
    2018-02-05 14:36:00.0
  • xeriz-catut-vycop-bybik-huzyf-bukep-guvet-cucic-mebun-debyr-netek-bubet-nicyl-susun-cutyv-fedys-duxux
    1Jvdms7qiPqVZQCZh9QeHxvdEneKQVjPwLdD2A7
    2018-02-05 16:49:25.0
  • xifaz-syryh-fizud-kofud-fifek-dirus-sykip-mamof-covet-nuvin-kabyh-fafag-tobog-dapas-dezun-cycar-kixyx
    2k66xn3F2jcqs7maneFB6h68bS1H9iPUijthsAp
    2018-02-05 16:49:53.0
  • xukif-zufiz-dysuh-kalak-rovar-dypem-hydil-tazof-bisom-pydag-soruf-lybyp-romyr-naniv-bonut-vufel-suxux
    3Ng84D3f6GA4QnVRNYP3k8Fcfj8EjutCzTAeLtB
    2018-02-05 18:16:39.0
  • xedeb-dehan-dufep-myvor-mukeh-hezut-lulug-dapap-vanab-cosah-fodel-kaces-rosuv-zileg-hysiz-sikad-saxex
    2018-02-06 10:32:23.0
  • xefir-sopid-sytun-biher-guhop-pohuk-sigah-bugyv-licub-getel-bibur-nevym-fyhor-sulog-dimug-cyvyz-dixox
    2018-02-06 10:54:36.0
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.