KeeeX Timestamp Certificate

3RzKYSn8ijox9TAkgYWH1EtGJX57aYFW2xsSfkp

Anchored on the Bitcoin Blockchain

This document is a static immutable timestamp certificate.

Download: 3RzKYSn8ijox9TAkgYWH1EtGJX57aYFW2xsSfkp.html

3RzKYSn8ijox9TAkgYWH1EtGJX57aYFW2xsSfkp
d5da331a25cbc1d4f6cbe9f8f4977eb6a0765af2250182d4304d79bcacc86e14
BlockCypher.com Blockchain.info Blocktrail.com
Sun Mar 18 00:00:01 UTC 2018
List of files timestamped in this transaction:
  • xepir-hekof-minas-tobib-gybec-lyhim-zuhez-fadyc-cenor-gobof-lizyz-vukop-motad-pymep-vopap-sozim-zoxux
    1X4UixL2FF1g4MbSir8CBBxwtAxq7ucC2gbt8K5
    2018-03-17 12:24:53.0
  • xokif-telav-gybob-muhuz-maryb-nyfyp-hepun-dusyv-felog-zikeg-dityl-lucop-sesar-tasyd-zyvoz-gabar-vuxax
    2iP6RfqugYX3TzSdrye6U1D4xdy3g44BxWSro5M
    2018-03-17 12:29:18.0
  • xevon-fibyv-lifok-sodol-mogin-finul-kudod-nasem-gotun-cizud-hyvyg-cihyd-fulim-nypih-vumud-kicuv-laxox
    2i14gLMtrtHBGRmbTEqQxorf4TNYnuwttLCa1fd
    2018-03-17 12:41:38.0
  • xipac-pagoh-saloh-cyhif-nelah-retod-lihid-tosud-rugik-hunef-pezoz-sikam-sozyb-dugel-gikub-gytac-duxyx
    3Kjn7k1Gd9H7QfZDkaisdy2bNo1kfY68Q7qSfWs
    2018-03-17 12:41:40.0
  • xuped-habih-lygil-zafir-dobag-rydeb-colez-lulav-dyrit-nykov-pegul-sicyb-boryk-pozas-kavuk-lifik-maxyx
    1k7U9i8aWYaikepS4m3vye1y79MdTbJVwYoRn4m
    2018-03-17 12:41:42.0
  • xeleb-folad-bidat-dovud-sypil-nomur-zibyt-fusaz-pupep-betoz-kizyk-sukiz-hetes-zorap-dapan-nosoc-cixix
    32T1scdHQpha4CZKvos8gx1eBy5yMhMvK8KbyK3
    2018-03-17 12:41:44.0
  • xinof-napun-zyluv-typyl-dikut-rovym-homuz-mever-rygoz-kogeh-mapot-hegik-dahan-tedel-mohoh-calaf-tuxox
    3L6oBukrDRXzxykpYzJ4ar5TMaVYBBgURL5dw7w
    2018-03-17 12:41:55.0
  • xudir-bimoc-hofeg-lyten-sygil-fomyd-linok-ninav-herys-karob-hosyk-visuh-lyfip-beted-dafyn-sirik-bexyx
    1K1eowADvsZkhDp4t6PSKi5AdYxcU1dxRaX1jSN
    2018-03-17 12:41:57.0
  • xorof-vufac-duluz-puvil-kumec-kykib-zyhec-mivon-zoroh-cucev-marib-herem-bynug-godyb-gemob-dogys-zaxyx
    2mAPjiCEpduCgrAysugTuxnuk8nZjApFQm7HoE1
    2018-03-17 12:42:01.0
  • xuhil-kedak-gidom-lokuv-hapyl-nebuk-nuceh-gisyt-cukud-badez-fuhab-hugel-papaf-kymal-lacek-purus-toxux
    3FWD2tHPGinHMDgJSUKcWu5L6zo4oQwPs7gsJtU
    2018-03-17 12:42:03.0
  • xihir-bazyn-moloc-ceput-lolyt-pytis-bypeg-vyrug-mufil-dolym-letoz-cudyh-vokor-gazyp-hagag-boful-noxux
    2Tn4EGdGeksn4PRnibbKmiXPPb183DJDtqEk9PZ
    2018-03-17 12:42:06.0
  • xunab-gohym-bozyt-catul-koben-refok-sidot-mokip-tudet-vubyb-demif-cyfob-mubaf-dydym-baloh-sonud-paxyx
    1B2LQDGxUzcZx9QWhCRNp4uaABoansuueRmVcoo
    2018-03-17 20:34:39.0
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.