KeeeX Timestamp Certificate

38jtFRzuksvGacA82qFLFEZ3UtycSArrc7pmk6w

Anchored on the Bitcoin Blockchain

This document is a static immutable timestamp certificate.

Download: 38jtFRzuksvGacA82qFLFEZ3UtycSArrc7pmk6w.html

38jtFRzuksvGacA82qFLFEZ3UtycSArrc7pmk6w
b70ce854bf76bb1e3ad8b3ae57e563323ff8b7116b61f98efbaaeafdffea6ccb
BlockCypher.com Blockchain.info Blocktrail.com
Sat Feb 10 00:00:01 UTC 2018
List of files timestamped in this transaction:
  • xufaz-fisah-bofym-zyhiv-diraz-fyvag-posin-neves-meriz-nebip-tybac-ligyh-pubin-sukip-cutok-zivon-dexax
    2qeJJfCeupeizyBRpMc3qFbPHh2iX3SBfjFbJ8c
    2018-02-09 10:46:47.0
  • xugap-nukub-ryfev-rofis-nicon-tygyn-sozoz-nusyb-tyvuh-gyduz-vunat-fybah-hotud-dusav-dabog-nesar-zexyx
    12SnQYJh2fnAeK7ijQ3BFtGQzJEu49jRUQsKG4s
    2018-02-09 10:47:22.0
  • xogom-tafal-vihab-lizof-fezod-lucom-vafuv-rygar-suzek-retab-camor-gimaf-rimaz-giveg-gepyb-tunyl-dexox
    1hRWZZooAAk6qPrisURWK2pcSkYmW7EgojChjjs
    2018-02-09 11:53:36.0
  • xecav-hyvus-vutoc-tyvec-dapac-legyp-gynov-vumab-capem-kozav-dilof-pesus-degac-vulum-valoh-sivot-lixix
    3YSYjWDedg41kpMPFutsr1MZM9yjvM86mfXrY5R
    2018-02-09 12:49:37.0
  • xukiv-mehit-fokog-tiruz-fimam-zifen-dodoc-gapen-kulys-byzav-mulat-sedek-visem-cofup-zenug-dedut-cuxyx
    2FZAosUVAipsHrbMKL8ki6XcMBtZdXeiL781ftd
    2018-02-09 12:52:14.0
  • xikeh-dibar-fevip-hezer-lofof-hucor-kapig-telan-rylot-polim-rilif-cubeg-taruk-lolyc-kehap-muraz-fexex
    2kTn2af3wSADzxCzSBdmb6RA93y6Dr1ZdTmjyGD
    2018-02-09 12:59:00.0
  • xufes-sesuc-tasef-benat-helir-zikas-vobog-necam-sacub-kovyl-hyciv-syguz-fisak-nepaz-balac-dygyh-fuxex
    38JGHutgRsmQUxJZLH53i5A6eJ1EaoYcqK9hobC
    2018-02-09 13:00:33.0
  • xofer-dorom-gifoc-calys-befiv-simut-bovov-pihod-nykun-lenem-lihyz-lihol-tocot-fovof-doryc-bovyd-baxax
    2Mw2Ex572TdvSaqWemHAFB34uf8ngUPQfYnaGXQ
    2018-02-09 13:01:55.0
  • xocaf-mofih-pinyh-zukoz-laman-gusin-palip-pepen-zihur-tezyv-pyvit-rigac-papar-moviv-roceg-sykyn-bexex
    24TULybF6SMbsNd42n1MbkhskffkPw4iXtVrV8V
    2018-02-09 13:03:36.0
  • xipef-hegar-pylys-cozup-ropof-lihos-zolud-soguh-kerul-vypyl-kohyg-gypiv-mynez-vorof-metyv-hidih-tyxix
    1PjLnAsXcL66t3c3YccJAPuwF27yJJitiTD8Vf1
    2018-02-09 13:17:30.0
  • xodal-zaliv-ripas-cofaz-cador-cebom-samyk-kupoz-myrac-puhym-vihus-zezym-mamod-vazof-cahac-fybiz-vyxux
    2ckriKFHyYZzmKRBD6pmGeRMHBQErYd7dz28vEi
    2018-02-09 14:12:58.0
  • xopav-dozeb-tenas-nagud-gumun-cufoh-zozik-sibuc-sucun-sulad-sacez-nileg-zasoc-resab-kecyl-rusyl-sexox
    1uQCp1Spenx3kQMs5EFFLsEEzGDTtJp4gXbwpPB
    2018-02-09 17:09:17.0
  • xobos-lihik-hyzir-focig-nihos-cyruk-lulot-tabif-natim-lapyg-digyl-pahir-bodes-zepel-namor-tobak-naxix
    1UFGvsPb6gGrxXQGfxYNZsRLDpvHgX9EWPhyZht
    2018-02-09 17:09:30.0
  • xofas-fyfas-kufoh-kosuk-veseb-tizal-nozuf-lezeb-dunak-dysal-puniz-kymag-fesas-zybyk-rehav-cebag-sexix
    3K2gdhQz3bHPSzbpoBvmW1soCQBANXPuN4RtAqr
    2018-02-09 17:09:38.0
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.