KeeeX Timestamp Certificate

3SQQddfU6VrUDzQpvAJ9h5obuf6XnzF81PYcMEa

Anchored on the Bitcoin Blockchain

This document is a static immutable timestamp certificate.

Download: 3SQQddfU6VrUDzQpvAJ9h5obuf6XnzF81PYcMEa.html

3SQQddfU6VrUDzQpvAJ9h5obuf6XnzF81PYcMEa
5515d11f925f8c115fb7ffad48fbca3a82a996d35526e1fa9e5d0052d9dceffd
BlockCypher.com Blockchain.info Blocktrail.com
Sun May 27 00:00:01 UTC 2018
List of files timestamped in this transaction:
  • xepor-matul-lohob-tyfof-matir-dagir-bepav-hudur-gocyt-hebom-pucov-nifun-vagym-zeluz-myrag-nudig-cuxyx
    2qiMBzD8mz1igteo9WajRk4pZ3bLNNtLyzoWqM1
    2018-05-26 12:47:02.0
  • xilim-vunys-hepur-gicus-muhun-hocec-hipas-hopyb-cihyz-gelep-fenar-myber-rypyh-pavym-hyrus-budim-doxax
    1aJbSK5QtuGYUU7hdmAr5j5U9SaZANq35gFm89x
    2018-05-26 14:04:44.0
  • xezeb-topov-biher-zekok-vytiv-lehuf-huzep-fymut-gipum-pibyb-natyf-fofit-rohut-zokis-mafub-giloc-voxux
    33dtGZNLGnibqQrAqZzuSXBxfJK1AJL1D2mqQd5
    2018-05-26 14:29:50.0
  • xevev-bygyp-fynyd-fanef-beceh-lener-duvyd-zydyg-zylop-vydek-femul-zyseg-labos-tubag-haran-samop-nuxux
    1h86mfHVMyHadQvmnWkwgfjhEDpQm6ZLzMzJzoZ
    2018-05-26 14:40:45.0
  • xigaf-cotah-peguh-situn-sogeb-samem-gumer-syfos-pybib-fupek-ragan-humah-vepur-tovus-memof-zusuf-maxox
    1Wksy5WT3Kp3U7syLkF71vMbhvb43qyR3bfJfwn
    2018-05-26 18:50:53.0
  • xevel-mumag-dariv-limik-mohyv-lyfon-raryk-tydev-cobek-sagek-lubig-funug-tahul-rozys-lisoz-vekal-vexux
    2k18dvMSF7PdYpuCZZCVSRUqZW9wL12cogEdAtU
    2018-05-26 18:51:41.0
  • xipet-dypuv-sebeh-gikig-tycum-zyvul-hybar-foryn-rohif-sihyk-hymys-latuk-lyvet-ranyt-givob-zohon-poxux
    2PU4NrjMQSShwmM5pxdJLyZR9eK42yiKY2KtzDw
    2018-05-26 18:53:27.0
  • xetem-kasir-taloc-fydyc-havas-sopag-gazez-cisid-rumyt-mycaz-duhav-tyceh-cykyk-locin-navoz-vozez-faxux
    3SXz8XSJVghMfLufFmYdfcEfKboGZ27XbYnr93w
    2018-05-26 18:55:39.0
  • xihit-lifam-codud-fymet-peleh-zemev-byveg-ferug-mezek-gefav-zozuh-belel-zyzul-damaf-fygef-gysam-doxex
    2Laf5n56Jrwgy5kwgU2oJRsmFsQERkHsTkxT2hk
    2018-05-26 18:56:16.0
  • xesof-nyman-halig-sysin-femon-gakuh-homag-tukec-myvyr-ryvuv-figus-pipet-zolag-vicun-zegyk-lugus-vixix
    1gXw13k66aGZyQ94m6HnV1et7mp1zNCJk198MXz
    2018-05-26 23:56:37.0
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.