KeeeX Timestamp Certificate

1S8gT1MoT2kDwG6h1ZXnsgfN49skdWB9EfV3ggM

Anchored on the Bitcoin Blockchain

This document is a static immutable timestamp certificate.

Download: 1S8gT1MoT2kDwG6h1ZXnsgfN49skdWB9EfV3ggM.html

1S8gT1MoT2kDwG6h1ZXnsgfN49skdWB9EfV3ggM
14b927c908fc20b9626773b51707c5e6867a0a5bc2c56ffc80a3be2a358565dd
BlockCypher.com Blockchain.info Blocktrail.com
Mon May 21 12:00:01 UTC 2018
List of files timestamped in this transaction:
  • xosor-kitas-fotim-dysur-sydus-nifav-vimyv-gotat-zebyv-rikus-zynun-nebyt-ruvut-bobok-myfyg-banyl-zixax
    2hNJBnm24iKqhpf1xWu2L5G7WXR6LgZXBRWEacg
    2018-05-21 08:24:37.0
  • xerov-difog-cagyd-cacam-kirit-luvaf-benef-canon-zivod-levef-makyc-zinoz-pynyp-rozis-duket-capyp-guxyx
    2o88uvEKpGgBL1SKMxKNak1zuawexuaam3ey9ig
    2018-05-21 08:24:46.0
  • xikim-rebag-dimig-homuc-nekyn-bilub-magar-cyfym-zyveh-nynin-zupaf-metob-dohar-nulaz-norev-neniz-gexux
    2hzhY2kzaiDqYBKahmiGFvUwCaj4ZZwpaiNqTS7
    2018-05-21 10:13:49.0
  • xozip-numup-duvut-nikik-gocud-lycit-tiham-buboh-galav-sovyn-nuhig-vagec-kopyv-lupan-riteh-seguk-hixox
    3aHh6bYo2viS5tKnjzbm42ryjDeq6MUu3RCjKCW
    2018-05-21 10:13:57.0
  • xehap-lepah-movog-vanuv-bytom-sihon-koceg-logoh-naduk-lucov-lipys-gahem-rapap-kufaz-dafat-tomog-gexax
    29rcZK2MCS86oZ7ux5Azdzgzi1quL3LygNUugxn
    2018-05-21 10:14:15.0
  • xitep-zuvem-faliv-lohev-motog-misiv-rusyb-pygyc-cobus-fepih-feguc-nyhun-hapov-bibyz-cehyg-tomug-luxex
    3U93hSBUmJMFZq4YapEz9sJ3SKo5oFCM1BoBcwN
    2018-05-21 10:14:38.0
  • xorak-cekop-ruhum-defed-rigir-tytyt-cucyv-cezit-rogeb-totek-gosiv-talon-hapob-refoh-revad-tibog-raxix
    1U7J2DuuLsatWyb3KUD5rPbWT8NkyGnPV3Cmjns
    2018-05-21 11:59:05.0
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.