KeeeX Timestamp Certificate

2p8KdRnMRgNjgk1XDwQ6EQHwCddLdanMVf7zZB5

Anchored on the Bitcoin Blockchain

This document is a static immutable timestamp certificate.

Download: 2p8KdRnMRgNjgk1XDwQ6EQHwCddLdanMVf7zZB5.html

2p8KdRnMRgNjgk1XDwQ6EQHwCddLdanMVf7zZB5
6e18ffe641e22a2e84e98364db4f67b130a49abdef44aca5e3282d34194f4e36
BlockCypher.com Blockchain.info Blocktrail.com
Fri Apr 27 12:00:01 UTC 2018
List of files timestamped in this transaction:
  • xovih-dogup-ribac-hyhal-periv-lodog-bovyt-myvig-cycel-kibin-dybob-copum-hafat-dykon-zyvym-dufur-pixux
    2abCtDdxZmLVxSuCX2AYfDDxUijLjT9BnGfAr3o
    2018-04-27 07:15:08.0
  • xunem-nakuz-ganah-datom-haled-rysyk-hemid-gudar-mynuf-hodiz-kubyk-zuriv-keset-recab-cubuv-dagat-kyxux
    2bwsvFoJDrccHRL6HC4ztszR7155rQfPYAAvGTV
    2018-04-27 09:45:20.0
  • xifek-liper-rimuh-rivac-funik-bucot-zanec-vutes-turuk-hyras-tugyl-hyfib-nekyk-fidac-fohog-cebek-paxax
    2B338fTTe2wCZVEXtDvFkGtBqGEWs9rXDhEXGjT
    2018-04-27 09:45:22.0
  • xeroc-kikyt-nekor-zyrac-zykil-facid-lyram-pozih-dezup-lales-hyfem-tykuk-hanam-menid-cuvec-vetim-duxex
    3ZUCr1qQeByCvWbStVoGWxfrcuq2YNzujrWPDzw
    2018-04-27 09:45:26.0
  • xegar-zomot-hukig-gecab-canyk-toryt-vabyn-pegyv-mamyz-mobez-bidok-bosym-vemiz-zolup-purih-sudap-kyxux
    1xNeBYuu48xP1BPAKiE8FEJV2n8UY7xvWpbHoEz
    2018-04-27 09:45:29.0
  • xolap-kybit-didyp-guzyc-cuval-sohic-fecoz-tomut-karim-tatyv-zunev-govyz-bazam-totan-nusop-dutel-zaxux
    3DPgE1CUhKS65DV92fPsDyBZFtQUEXxwYoBWRD5
    2018-04-27 09:45:32.0
  • xocot-gybeg-lygec-gevuv-dykuh-hubat-lyfer-fykor-tumur-momum-myhir-bikas-kuveg-zakan-voruc-vuker-koxux
    1fn9b3EcnTqiGabWSgpC7jjYCD8EWd3zSMrhMbE
    2018-04-27 10:19:18.0
  • xevek-gizib-zilyn-veguf-tysat-rihem-gicop-ropyn-fehyr-bytab-zihov-dybyv-kymuc-zymes-conet-ceguc-noxox
    1Ng8aF14hTCZ5mtCmQVz4uxXcdv64rQAJB4YWuw
    2018-04-27 10:40:58.0
  • xesid-batuk-pezin-bimur-bivym-vubac-vivyg-ricym-rihop-visyn-nyvit-tulah-hudet-macyl-baboz-gymoh-mixyx
    1f4ZTJbit8YEg6FTRYjQLtbXmQ5WCYqZ6xQePBq
    2018-04-27 10:43:42.0
  • xotes-fofuk-gogyl-rokuc-cubiv-sicis-sysil-cigeb-lecyp-kukam-tydah-cicyv-kygis-nasyh-mylok-heruk-kyxex
    38nxuUdV3EGdZAHp8t8mvAQAgf5fhURupWXp3AZ
    2018-04-27 10:44:33.0
  • xuneb-muped-devuv-kivir-hyvev-zimyt-libyr-sozug-cohoz-nutyk-tikyl-tudob-nopyn-tikyp-dakol-ceren-baxyx
    3KwsshxvDxNu2u8DH6YatNMsurnMMq3hnJwDPyX
    2018-04-27 10:46:00.0
  • xetiz-huvyp-lohil-riket-katom-saror-bilaf-hehub-bimen-coled-hicym-zuniv-zupyz-rinun-totul-taseg-zexox
    12KTjsEiQnp6W4rVK6Z3EP4Jt5PCyYKwW6GG8an
    2018-04-27 11:31:31.0
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.