KeeeX Timestamp Certificate

2cA8cPhDNGpr7ys1y7sdCQVQYUdpwvw8uLjMYyK

Anchored on the Bitcoin Blockchain

This document is a static immutable timestamp certificate.

Download: 2cA8cPhDNGpr7ys1y7sdCQVQYUdpwvw8uLjMYyK.html

2cA8cPhDNGpr7ys1y7sdCQVQYUdpwvw8uLjMYyK
995514eea54b9b0d94976abc906215b938234a78262ff851f64b354dcfd1a9ee
BlockCypher.com Blockchain.info Blocktrail.com
Tue Feb 13 12:00:01 UTC 2018
List of files timestamped in this transaction:
  • xodaz-myfyv-zofec-hosyg-zuzid-bypoh-vadul-covah-bamyz-ruzoz-hegak-bytyr-nuroh-febif-rapun-zecim-nixix
    1Voco6B8wAN5DVTSJQUi9xocsM4Cr6S4mWB3kU4
    2018-02-13 08:10:06.0
  • xuker-lamit-rosur-sumog-piduv-ganal-behyb-kobyz-zamyb-kohak-nogon-kobub-pevup-nohov-pinos-gomug-kexox
    1PRYLdxB1GqM18oToeNLEPT4XK8QzV9B6j7EVda
    2018-02-13 08:10:19.0
  • xipes-corez-koduk-zohep-nokob-kuval-hovip-sypar-nysem-dozyb-sobov-letip-palus-cekak-mudok-fukyz-lexox
    1s8CSCk7Jf6DLLTnDFSJfHkZuKwVubhbRfHyqPj
    2018-02-13 10:00:45.0
  • xezeg-fepic-kezus-firid-dyzuz-vydac-gibin-revec-guryc-pafup-pilut-vucyh-zuzel-tolok-fatap-vudov-dixox
    1Vk4yNa2FEVmcAj89GNnJa54USGt8wWZ3RhLdN4
    2018-02-13 10:21:29.0
  • xivak-sicol-vihek-kenyr-sozub-direb-vynyv-dumok-syfev-gulin-zazum-cemor-butik-zocyg-cadec-fareh-voxax
    1wNVM79ofDGzzvm7UWS9S52euCjRMdjXPcvSUUP
    2018-02-13 10:23:30.0
  • xinov-vukub-vukyh-nocaz-togus-dahym-zimuz-hegop-hegem-rurep-hizif-garyp-mizub-kypud-cysec-dazyl-taxex
    385ro9EPAYEZ6USYgNPzFX7qDMM1ptD5ppnyjk4
    2018-02-13 10:31:05.0
  • xesig-diget-ruduf-tuzev-cenoc-gaguf-demil-lusuz-fotyf-mekat-bymyz-lypac-bamys-fusic-monub-folig-nexox
    2y5eWkAQK4pL7foW2d3fHdgMQDkMwettQgiHhUf
    2018-02-13 11:03:46.0
  • xelol-segut-telir-dydur-pohyk-tazes-socib-ninyz-duton-nacug-vemoz-byzaf-dosic-nylil-novod-kizeb-naxix
    2wPovF9fTZL3xuVncuqjVGkQwBUXZSAMqujnueo
    2018-02-13 11:15:48.0
  • xedag-bicyl-zumuh-funir-mupuf-halud-vikah-zypim-nekyl-vymar-fugop-lopid-cyvag-fivuf-kiryz-selig-soxux
    3RiQr3mX6NZ4XxyYaSYr29N1E2EP9V6rRuL57nj
    2018-02-13 11:19:27.0
  • xumam-nemab-dilym-kidyn-vacyd-mosot-lityd-nibom-dyrom-zaluc-kovap-subip-mulec-kuzim-busyt-vuhal-buxyx
    3MpWCyRDakkYbFAi7MtjNCrTHPMcoRCqkkLmQev
    2018-02-13 11:23:25.0
  • xubov-pidym-surab-rofud-nagav-dicok-tulyh-safob-rykuv-rutet-herid-besil-susig-myril-tybon-kisun-byxyx
    2ngnsMiB3ik5SaHx9YK7EH5kFquFw1hAhwx2MAf
    2018-02-13 11:23:28.0
  • xurap-hakug-focat-mater-dyvyb-tezog-bybar-kepih-voput-kihys-horyl-tucut-tegek-lusut-gemaz-nizaz-fexax
    35N8zdcqecr8po2kCLJmXSXc33i7N2bfgdRZ8TY
    2018-02-13 11:29:08.0
  • xibib-revom-nelyc-vopyt-rarif-zidam-zyhur-hepin-sokyp-zirun-tehir-mahef-hagah-zovyb-lulol-rytab-zyxex
    1nLTFJUjKPyEQezZaRFPXUgFAQ76W1nkcfCp4CA
    2018-02-13 11:29:20.0
  • xenah-cykic-cakuv-cuhap-cypun-gurur-tubot-kubyg-lyhyd-lofig-bipus-segik-fyluf-saroc-dubik-cafes-gexix
    3SWR3g6hFESeLXHPvjYC8PVuTG99JGDhma6Ux2T
    2018-02-13 11:29:37.0
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.