KeeeX Timestamp Certificate

2YdFAhyq5iVhSnBK7y9FhSoA1TJgnwjHts1J6uL

Anchored on the Bitcoin Blockchain

This document is a static immutable timestamp certificate.

Download: 2YdFAhyq5iVhSnBK7y9FhSoA1TJgnwjHts1J6uL.html

2YdFAhyq5iVhSnBK7y9FhSoA1TJgnwjHts1J6uL
3c55fc0a8e775ea73a90f3e53e1963f066720a0387c3bbc4166a066007d5ed81
BlockCypher.com Blockchain.info Blocktrail.com
Mon Nov 06 00:00:01 UTC 2017
List of files timestamped in this transaction:
  • xitez-zivin-pynyr-zikih-nobed-medat-voter-gezod-kofav-notoh-kikit-pakem-fycuv-nasob-banot-zityd-texox
    2CJKMXdew5i2cpjSJHVAXwQq1CUaA3677R24svW
    2017-11-05 13:52:04.0
  • xodez-ryzuc-fibyg-hetec-hefat-dezyv-cilag-pydos-muzul-luruh-regal-fuber-digoz-cefus-tizus-zibek-guxex
    2NCrraRbQQAF9w1qSYr28Tc6nDjnxm5wYhk5YkJ
    2017-11-05 13:53:42.0
  • xokeb-dulev-belyz-likyn-hedac-dohef-kyvud-rynyp-nover-rituh-rikil-gehig-ketam-fotoh-mihim-sukec-zuxex
    3dRWU5Phmxo7KfYwQkDnBguLBLXe7qQ6Meka9PT
    2017-11-05 14:24:51.0
  • xipic-dymek-lubol-pakyg-hyvug-haron-napen-rekuc-vecec-vokil-tutel-syfuv-dozep-tyzuz-gonad-mudum-gixix
    3KB2Ewx5yjwV1NDJ8wyTsQnbfB4bbEmnKwhF2MZ
    2017-11-05 15:40:14.0
  • xunin-kibib-tigyh-zotig-valad-nulac-bokor-fynel-zasep-fygap-cohep-sinih-myloz-vogal-siges-mepyh-zuxix
    3Tw5UpF3M1vQsrF6SkQa7yEEZUCXuaCdzmMaB6r
    2017-11-05 15:40:53.0
  • xudas-sisaf-misus-hysal-buzek-tokut-gezyn-befud-dirig-hypys-degaf-timaz-lucan-fyved-cegav-nogor-loxix
    1PvaW62SYRhHJfKY7gobQSS47hDdoYhRMvnqfCb
    2017-11-05 16:57:28.0
  • xerov-gegug-cizoc-fymoc-rycuv-gevig-bobuz-semef-tukyp-cibis-zocek-lamur-kocen-kynuc-covyp-hucob-vaxox
    3Jpjr3AC7AoKPaQ6BfgxDes2vUbXAneqoExcHjQ
    2017-11-05 18:16:52.0
  • xukic-tobup-pylad-patyc-surec-ravom-tecet-bilyb-myham-dased-gymak-gilyh-bopif-copiz-lipyb-kafac-pyxax
    3d4kzP2a4LA1ejbvF78bhkKinbS9FfnwAEAJFDd
    2017-11-05 18:18:00.0
  • xesen-lofyb-dasom-corig-tuvem-sigib-romip-mycir-syfoh-tymyf-mavir-dacol-cekog-fykit-pagib-pihob-poxex
    2J5DqBqFtMNbwZ81Zw17HY4dc65LEo8xd3ZVRan
    2017-11-05 22:44:17.0
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.