{"id":12377,"date":"2021-10-28T06:28:17","date_gmt":"2021-10-27T21:28:17","guid":{"rendered":"https:\/\/sipo.tokyo\/?p=12377"},"modified":"2021-11-01T17:04:30","modified_gmt":"2021-11-01T08:04:30","slug":"post-12377","status":"publish","type":"post","link":"https:\/\/sipo.tokyo\/?p=12377","title":{"rendered":"IOG\u30d6\u30ed\u30b0\uff1aOuroboros Chronos\u3001\u30d6\u30ed\u30c3\u30af\u30c1\u30a7\u30fc\u30f3\u6280\u8853\u306b\u57fa\u3065\u304f\u521d\u306e\u9ad8\u56de\u5fa9\u529b\u306e\u6697\u53f7\u5316\u3055\u308c\u305f\u6642\u9593\u6e90\u3092\u63d0\u4f9b"},"content":{"rendered":"\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"400\" src=\"https:\/\/sipo.tokyo\/wp-content\/uploads\/2021\/10\/OuroborosChronos.webp\" alt=\"\" class=\"wp-image-12378\" srcset=\"https:\/\/sipo.tokyo\/wp-content\/uploads\/2021\/10\/OuroborosChronos.webp 800w, https:\/\/sipo.tokyo\/wp-content\/uploads\/2021\/10\/OuroborosChronos-300x150.webp 300w, https:\/\/sipo.tokyo\/wp-content\/uploads\/2021\/10\/OuroborosChronos-768x384.webp 768w, https:\/\/sipo.tokyo\/wp-content\/uploads\/2021\/10\/OuroborosChronos-450x225.webp 450w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure><\/div>\n\n\n\n<p>\u4ee5\u4e0b\u306fIOG\u30d6\u30ed\u30b0\u306b\u63b2\u8f09\u3055\u308c\u305f\u8a18\u4e8b\u300c<a href=\"https:\/\/iohk.io\/en\/blog\/posts\/2021\/10\/27\/ouroboros-chronos-provides-the-first-high-resilience-cryptographic-time-source-based-on-blockchain\/\" data-type=\"URL\" data-id=\"https:\/\/iohk.io\/en\/blog\/posts\/2021\/10\/27\/ouroboros-chronos-provides-the-first-high-resilience-cryptographic-time-source-based-on-blockchain\/\" target=\"_blank\" rel=\"noreferrer noopener\">Ouroboros Chronos provides the first high-resilience, cryptographic time source based on blockchain technology<\/a>\u300d\u3092\u7ffb\u8a33\u3057\u305f\u3082\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<div class=\"dp_toc_container pos-before_first_h allow-toggle\" role=\"navigation\" data-margin=\"30\"><p class=\"toc_title_block\"><span class=\"toc_title icon-list\">INDEX<\/span><span class=\"toc_toggle icon-up-open\" role=\"button\"><\/span><\/p><ul class=\"dp_toc_ul has_title\"><li><a href=\"#ouroboros-chronose38081e38396e383ade38383e382afe38381e382a7e383bce383b3e68a80e8a193e381abe59fbae381a5e3818fe5889de381aee9ab98e59b9ee5bea9-1\">Ouroboros Chronos\u3001\u30d6\u30ed\u30c3\u30af\u30c1\u30a7\u30fc\u30f3\u6280\u8853\u306b\u57fa\u3065\u304f\u521d\u306e\u9ad8\u56de\u5fa9\u529b\u306e\u6697\u53f7\u5316\u3055\u308c\u305f\u6642\u9593\u6e90\u3092\u63d0\u4f9b<\/a><ul><li><a href=\"#ouroboros-chronose381afe38081e38396e383ade38383e382afe38381e382a7e383bce383b3e68a80e8a193e38292e38399e383bce382b9e381abe38197e3819fe5889d-2\">Ouroboros Chronos\u306f\u3001\u30d6\u30ed\u30c3\u30af\u30c1\u30a7\u30fc\u30f3\u6280\u8853\u3092\u30d9\u30fc\u30b9\u306b\u3057\u305f\u521d\u306e\u9ad8\u8010\u969c\u5bb3\u6027\u306e\u6697\u53f7\u5316\u6642\u9593\u6e90\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/a><\/li><li><a href=\"#e69982e99693e381aee9878de8a681e680a7-3\">\u6642\u9593\u306e\u91cd\u8981\u6027<\/a><\/li><li><a href=\"#e5ae9fe69982e99693-4\">\u5b9f\u6642\u9593<\/a><\/li><li><a href=\"#e38396e383ade38383e382afe38381e382a7e383bce383b3e381aee69982e588bbe5908ce69c9f-5\">\u30d6\u30ed\u30c3\u30af\u30c1\u30a7\u30fc\u30f3\u306e\u6642\u523b\u540c\u671f<\/a><\/li><li><a href=\"#ouroboros-chronosefbc9ae382b3e3839fe383a5e3838be382b1e383bce382b7e383a7e383b3e381a8e382bfe382a4e3839fe383b3e382b0e381aee59b9ee5bea9e58a9b-6\">Ouroboros Chronos\uff1a\u30b3\u30df\u30e5\u30cb\u30b1\u30fc\u30b7\u30e7\u30f3\u3068\u30bf\u30a4\u30df\u30f3\u30b0\u306e\u56de\u5fa9\u529b\u3092\u9ad8\u3081\u308b\u3088\u3046\u306b\u8a2d\u8a08\u3055\u308c\u3066\u3044\u308b<\/a><\/li><\/ul><\/div><h3 class=\"wp-block-heading\" id=\"ouroboros-chronose38081e38396e383ade38383e382afe38381e382a7e383bce383b3e68a80e8a193e381abe59fbae381a5e3818fe5889de381aee9ab98e59b9ee5bea9-1\">Ouroboros Chronos\u3001\u30d6\u30ed\u30c3\u30af\u30c1\u30a7\u30fc\u30f3\u6280\u8853\u306b\u57fa\u3065\u304f\u521d\u306e\u9ad8\u56de\u5fa9\u529b\u306e\u6697\u53f7\u5316\u3055\u308c\u305f\u6642\u9593\u6e90\u3092\u63d0\u4f9b<\/h3>\n\n\n\n<p><strong>\u3088\u308a\u6b63\u78ba\u306a\u30b0\u30ed\u30fc\u30d0\u30eb\u30bf\u30a4\u30e0\u30ad\u30fc\u30d4\u30f3\u30b0\u3092\u63d0\u4f9b\u3059\u308b\u305f\u3081\u306b\u8a2d\u8a08\u3055\u308c\u305fChronos\u306f\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u5411\u4e0a\u3068\u901a\u4fe1\u9045\u5ef6\u306b\u5bfe\u3059\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u56de\u5fa9\u529b\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002<\/strong><\/p>\n\n\n\n<p>By Olga Hryniuk 2021\u5e7410\u670827\u65e5  5 mins read<\/p>\n\n\n\n<h5 class=\"wp-block-heading\" id=\"ouroboros-chronose381afe38081e38396e383ade38383e382afe38381e382a7e383bce383b3e68a80e8a193e38292e38399e383bce382b9e381abe38197e3819fe5889d-2\">Ouroboros Chronos\u306f\u3001\u30d6\u30ed\u30c3\u30af\u30c1\u30a7\u30fc\u30f3\u6280\u8853\u3092\u30d9\u30fc\u30b9\u306b\u3057\u305f\u521d\u306e\u9ad8\u8010\u969c\u5bb3\u6027\u306e\u6697\u53f7\u5316\u6642\u9593\u6e90\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/h5>\n\n\n\n<p>\u3069\u306e\u3088\u3046\u306a\u5206\u6563\u578b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u304a\u3044\u3066\u3082\u3001\u305d\u306e\u56de\u5fa9\u529b\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u306b\u306f\u30b0\u30ed\u30fc\u30d0\u30eb\u306a\u6642\u523b\u306e\u540c\u671f\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3059\u3079\u3066\u306e\u53c2\u52a0\u8005\u306e\u9593\u3067\u6700\u65b0\u306e\u60c5\u5831\u3092\u78ba\u4fdd\u3057\u3001\u6b63\u78ba\u306a\u53d6\u5f15\u51e6\u7406\u3068\u30d6\u30ed\u30c3\u30af\u4f5c\u6210\u3092\u7dad\u6301\u3059\u308b\u3053\u3068\u304b\u3089\u3001\u6642\u9593\u306e\u540c\u671f\u306f\u30b9\u30de\u30fc\u30c8\u30b3\u30f3\u30c8\u30e9\u30af\u30c8\u306e\u5c55\u958b\u306e\u89b3\u70b9\u304b\u3089\u7279\u306b\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<p>Input Output\u793e\u306f\u3001\u30a8\u30b8\u30f3\u30d0\u30e9\u5927\u5b66\u3001\u30d1\u30c7\u30e5\u30fc\u5927\u5b66\u3001\u30b3\u30cd\u30c1\u30ab\u30c3\u30c8\u5927\u5b66\u306e\u79d1\u5b66\u8005\u3068\u5171\u540c\u3067\u3001\u30d6\u30ed\u30c3\u30af\u30c1\u30a7\u30fc\u30f3\u5168\u4f53\u3067\u6642\u8a08\u3092\u30b0\u30ed\u30fc\u30d0\u30eb\u306b\u540c\u671f\u3055\u305b\u3001\u3088\u308a\u5b89\u5168\u3067\u6539\u3056\u3093\u4e0d\u53ef\u80fd\u306a\u30b0\u30ed\u30fc\u30d0\u30eb\u306a\u6642\u9593\u6e90\u3092\u63d0\u4f9b\u3059\u308b\u65b9\u6cd5\u3092\u767a\u898b\u3057\u307e\u3057\u305f\u3002\u3053\u308c\u306b\u306f\u3001\u30b5\u30d7\u30e9\u30a4\u30c1\u30a7\u30fc\u30f3\u306b\u304a\u3051\u308b\u8a08\u6e2c\u6a5f\u5668\u306e\u3088\u3046\u306aIoT\uff08Internet of Things\uff09\u30c7\u30d0\u30a4\u30b9\u3084\u3001\u4e00\u822c\u7684\u306a\u5206\u6563\u30b7\u30b9\u30c6\u30e0\u304b\u3089\u306e\u6642\u523b\u306e\u540c\u671f\u304c\u542b\u307e\u308c\u3001\u7279\u306b\u4e2d\u592e\u306e\u6642\u8a08\u304c\u7834\u58ca\u3055\u308c\u308b\u3053\u3068\u304c\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30ea\u30b9\u30af\u306b\u306a\u308b\u5834\u5408\u306b\u6709\u52b9\u3067\u3059\u3002\u3053\u306e\u7814\u7a76\u306f\u3001\u30ae\u30ea\u30b7\u30e3\u8a9e\u3067\u300c\u6642\u9593\u300d\u3092\u610f\u5473\u3059\u308bOuroboros Chronos\u306b\u3088\u3063\u3066\u5b9f\u73fe\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u306eOuroboros\u306f\u3001\u30ab\u30eb\u30c0\u30ce\u30d6\u30ed\u30c3\u30af\u30c1\u30a7\u30fc\u30f3\u3092\u652f\u3048\u308b\u30b3\u30f3\u30bb\u30f3\u30b5\u30b9\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306e\u6700\u65b0\u7248\u3067\u3059\u3002<\/p>\n\n\n\n<h5 class=\"wp-block-heading\" id=\"e69982e99693e381aee9878de8a681e680a7-3\">\u6642\u9593\u306e\u91cd\u8981\u6027<\/h5>\n\n\n\n<p>\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3084\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u304a\u3044\u3066\u3001\u6642\u9593\u306f\u5fc5\u8981\u4e0d\u53ef\u6b20\u306a\u6982\u5ff5\u3067\u3059\u3002\u3053\u306e\u6982\u5ff5\u304c\u306a\u3051\u308c\u3070\u3001TLS\uff08Transport Layer Security\uff09\u30d9\u30fc\u30b9\u306eWeb\u30b5\u30a4\u30c8\u306b\u30a2\u30af\u30bb\u30b9\u3057\u305f\u308a\u3001\u30c7\u30fc\u30bf\u3092\u4ea4\u63db\u3057\u305f\u308a\u3001\u3055\u307e\u3056\u307e\u306a\u6697\u53f7\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u5229\u7528\u3057\u305f\u308a\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u3057\u304b\u3057\u3001\u30bf\u30a4\u30e0\u30c8\u30e9\u30c3\u30ad\u30f3\u30b0\u306f\u89e3\u6c7a\u304c\u96e3\u3057\u3044\u554f\u984c\u3067\u3059\u3002\u6b63\u78ba\u306a\u6642\u523b\u306e\u540c\u671f\u306b\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u5168\u4f53\u3067\u306e\u30c7\u30fc\u30bf\u9001\u4fe1\u304c\u524d\u63d0\u3068\u306a\u308a\u3001\u305d\u306e\u305f\u3081\u306b\u306f\u6642\u9593\u304c\u304b\u304b\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u72b6\u614b\u306f\u5e38\u306b\u5909\u5316\u3057\u3066\u304a\u308a\u3001\u6df7\u96d1\u72b6\u6cc1\u3084\u30c7\u30fc\u30bf\u306e\u5b9f\u969b\u306e\u30b5\u30a4\u30ba\u306a\u3069\u306b\u3082\u4f9d\u5b58\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u7279\u5b9a\u306e\u30c7\u30fc\u30bf\u9001\u4fe1\u306b\u5fc5\u8981\u306a\u6642\u9593\u3092\u4e88\u6e2c\u3059\u308b\u3053\u3068\u306f\u56f0\u96e3\u3067\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u4e0d\u6574\u5408\u304c\u751f\u3058\u308b\u3053\u3068\u304c\u591a\u304f\u3001\u6b63\u78ba\u306a\u30bf\u30a4\u30e0\u30ad\u30fc\u30d4\u30f3\u30b0\u306e\u305f\u3081\u306e\u30c4\u30fc\u30eb\u3084\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u3092\u63d0\u4f9b\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<h5 class=\"wp-block-heading\" id=\"e5ae9fe69982e99693-4\">\u5b9f\u6642\u9593<\/h5>\n\n\n\n<p>\u4e00\u822c\u7684\u306a\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u3067\u306f\u3001\u6642\u9593\u3092\u8a08\u308b\u3053\u3068\u306f\u5f53\u305f\u308a\u524d\u306e\u3053\u3068\u3067\u3059\u3002\u3057\u304b\u3057\u3001\u305d\u306e\u88cf\u306b\u306f\u53b3\u5bc6\u306a\u4ed5\u7d44\u307f\u304c\u5b58\u5728\u3057\u3066\u3044\u307e\u3059\u3002\u4f8b\u3048\u3070<a href=\"http:\/\/ntp.org\/\" data-type=\"URL\" data-id=\"http:\/\/ntp.org\/\" target=\"_blank\" rel=\"noreferrer noopener\">NTP\uff08Network Time Protocol\uff09<\/a>\u3067\u306f\u3001\u4e16\u754c\u5404\u5730\u306b\u914d\u7f6e\u3055\u308c\u305f\u30b5\u30fc\u30d0\u30fc\u306e\u968e\u5c64\u3092\u4f7f\u3063\u3066\u8a08\u6642\u3092\u884c\u3063\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306b\u306f\u6700\u592715\u306e\u30b9\u30c8\u30e9\u30bf\u30e0\u304c\u542b\u307e\u308c\u3001\u305d\u306e\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30d1\u30b9\u306f\u6700\u9069\u306a\u5f62\u3067\u540c\u671f\u3059\u308b\u3088\u3046\u306b\u958b\u767a\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u3001<a href=\"https:\/\/en.wikipedia.org\/wiki\/Bellman\u2013Ford_algorithm\" data-type=\"URL\" data-id=\"https:\/\/en.wikipedia.org\/wiki\/Bellman\u2013Ford_algorithm\" target=\"_blank\" rel=\"noreferrer noopener\">\u30d9\u30eb\u30de\u30f3\u30fb\u30d5\u30a9\u30fc\u30c9<\/a>\u6700\u77ed\u7d4c\u8def\u30b9\u30d1\u30cb\u30f3\u30b0\u30c4\u30ea\u30fc\u3092\u69cb\u7bc9\u3059\u308b\u3053\u3068\u3067\u3001\u30ec\u30a4\u30c6\u30f3\u30b7\u30fc\u3068\u4f1d\u9001\u6642\u9593\u306e\u4e0d\u6574\u5408\u3092\u4f4e\u6e1b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u82f1\u56fd\u653f\u5e9c\u306e<a href=\"https:\/\/www.gov.uk\/government\/publications\/satellite-derived-time-and-position-blackett-review\" data-type=\"URL\" data-id=\"https:\/\/www.gov.uk\/government\/publications\/satellite-derived-time-and-position-blackett-review\" target=\"_blank\" rel=\"noreferrer noopener\">\u885b\u661f\u7531\u6765\u306e\u6642\u523b\u3068\u4f4d\u7f6e<\/a>\u3002Blackett\u6c0f\u306e\u30ec\u30d3\u30e5\u30fc\u3067\u306f\u3001\u3088\u308a\u56de\u5fa9\u529b\u306e\u3042\u308b\u30bf\u30a4\u30df\u30f3\u30b0\u30c7\u30fc\u30bf\u306e\u5fc5\u8981\u6027\u3068\u3001\u30b9\u30de\u30fc\u30c8\u30b0\u30ea\u30c3\u30c9\u304b\u3089\u81ea\u5f8b\u8d70\u884c\u8eca\u307e\u3067\u306e\u91cd\u8981\u90e8\u9580\u304c\u3001\u59a8\u5bb3\u96fb\u6ce2\u3084\u30b5\u30a4\u30d0\u30fc\u653b\u6483\u3001\u5b87\u5b99\u5929\u6c17\u306b\u8106\u5f31\u306a\u5168\u5730\u7403\u6e2c\u4f4d\u885b\u661f\u30b7\u30b9\u30c6\u30e0\uff08GNSS\uff09\u306b\u5371\u967a\u306a\u5f62\u3067\u4f9d\u5b58\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u5f37\u8abf\u3055\u308c\u307e\u3057\u305f\u3002\u3055\u3089\u306b\u3001\u6700\u8fd1\u3001\u56fd\u7acb\u7269\u7406\u5b66\u7814\u7a76\u6240\u304c\u4e3b\u5c0e\u3059\u308b\u4e16\u754c\u521d\u306e<a href=\"https:\/\/www.gov.uk\/government\/news\/worlds-first-timing-centre-to-protect-uk-from-risk-of-satellite-failure\" data-type=\"URL\" data-id=\"https:\/\/www.gov.uk\/government\/news\/worlds-first-timing-centre-to-protect-uk-from-risk-of-satellite-failure\" target=\"_blank\" rel=\"noreferrer noopener\">\u56fd\u7acb\u30bf\u30a4\u30df\u30f3\u30b0\u30bb\u30f3\u30bf\u30fc<\/a>\u304c\u8a2d\u7acb\u3055\u308c\u3001\u901a\u4fe1\u304b\u3089\u30b9\u30de\u30fc\u30c8\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u307e\u3067\u3042\u3089\u3086\u308b\u5206\u91ce\u3067\u3001\u4ee3\u66ff\u3068\u306a\u308b\u3088\u308a\u56de\u5fa9\u529b\u306e\u9ad8\u3044\u30bf\u30a4\u30df\u30f3\u30b0\u30b5\u30fc\u30d3\u30b9\u3092\u8abf\u67fb\u3057\u3066\u3044\u307e\u3059\u3002\u73fe\u5728\u3001\u56fd\u969b\u7684\u306a\u8a08\u6e2c\u30bb\u30f3\u30bf\u30fc\u3067\u306f\u3001\u7570\u306a\u308b\u5468\u6ce2\u6570\u3084\u8907\u6570\u306e\u5834\u6240\u3067\u52d5\u4f5c\u3059\u308b<a href=\"https:\/\/www.npl.co.uk\/time-frequency\/comparison-dissemination\" data-type=\"URL\" data-id=\"https:\/\/www.npl.co.uk\/time-frequency\/comparison-dissemination\" target=\"_blank\" rel=\"noreferrer noopener\">\u6642\u8a08\u3092\u6bd4\u8f03<\/a>\u3057\u3066\u7cbe\u5ea6\u3092\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h5 class=\"wp-block-heading\" id=\"e38396e383ade38383e382afe38381e382a7e383bce383b3e381aee69982e588bbe5908ce69c9f-5\">\u30d6\u30ed\u30c3\u30af\u30c1\u30a7\u30fc\u30f3\u306e\u6642\u523b\u540c\u671f<\/h5>\n\n\n\n<p>\u5206\u6563\u578b\u53f0\u5e33\u6280\u8853\u3067\u306f\u3001\u30bf\u30a4\u30e0\u30ad\u30fc\u30d4\u30f3\u30b0\u306e\u6982\u5ff5\u304c\u7570\u306a\u308a\u307e\u3059\u3002\u6b63\u78ba\u3067\u6709\u52b9\u306a\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u304c\u306a\u3044\u3068\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306f\u51e6\u7406\u4e2d\u306e\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u304c\u6709\u52b9\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3067\u304d\u305a\u3001\u524d\u306e\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u3092\u623b\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3002\u3055\u307e\u3056\u307e\u306a\u30d6\u30ed\u30c3\u30af\u30c1\u30a7\u30fc\u30f3\u5143\u5e33\u3067\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u7570\u306a\u308b\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u6280\u8853\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u3057\u304b\u3057\u3001\u305d\u308c\u3089\u306f\u5fc5\u305a\u3057\u3082\u975e\u5e38\u306b\u6b63\u78ba\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u4f8b\u3048\u3070\u3001Bitcoin\u3067\u306f\u30b3\u30f3\u30bb\u30f3\u30b5\u30b9\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4e0a\u306e\u7406\u7531\u304b\u3089\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u4e3b\u306b\u30bf\u30a4\u30e0\u30ad\u30fc\u30d4\u30f3\u30b0\u306e\u305f\u3081\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u307e\u305f\u3001Ethereum\u3067\u306f\u3001\u30aa\u30f3\u30c1\u30a7\u30fc\u30f3\u306e\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u306f\u30de\u30a4\u30ca\u30fc\u306b\u3088\u3063\u3066\u6c7a\u5b9a\u3055\u308c\u307e\u3059\u304c\u3001\u30b3\u30f3\u30bb\u30f3\u30b5\u30b9\u306f\u6280\u8853\u7684\u306b\u305d\u308c\u3089\u3092\u30d6\u30ed\u30c3\u30af\u3057\u305f\u308a\u3001\u6709\u52b9\u6027\u3092\u691c\u8a3c\u3057\u305f\u308a\u3057\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u30b9\u30de\u30fc\u30c8\u30b3\u30f3\u30c8\u30e9\u30af\u30c8\u306e\u5b9f\u884c\u306b\u3082\u3001\u30bf\u30a4\u30e0\u30ad\u30fc\u30d4\u30f3\u30b0\u306f\u6b20\u304b\u305b\u307e\u305b\u3093\u3002\u4e0d\u6b63\u78ba\u306a\u60c5\u5831\u306f\u3001\u5206\u6563\u578b\u91d1\u878d\uff08DeFi\uff09\u306e\u30b9\u30de\u30fc\u30c8\u30b3\u30f3\u30c8\u30e9\u30af\u30c8\u653b\u6483\u306e\u30ea\u30b9\u30af\u3068\u306a\u308a\u307e\u3059\u3002\u30b9\u30de\u30fc\u30c8\u30b3\u30f3\u30c8\u30e9\u30af\u30c8\u306e\u8106\u5f31\u6027\u306f\u3001\u5fc5\u305a\u3057\u3082\u30b3\u30fc\u30c9\u306e\u4e0d\u5099\u306b\u3088\u308b\u3082\u306e\u3067\u306f\u306a\u304f\u3001\u6642\u9593\u306e\u4e0d\u6574\u5408\u3092\u89e3\u6c7a\u3057\u3066\u3001\u53f0\u5e33\u5185\u3067\u8d77\u3053\u308a\u3046\u308b\u653b\u6483\u3092\u30d6\u30ed\u30c3\u30af\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h5 class=\"wp-block-heading\" id=\"ouroboros-chronosefbc9ae382b3e3839fe383a5e3838be382b1e383bce382b7e383a7e383b3e381a8e382bfe382a4e3839fe383b3e382b0e381aee59b9ee5bea9e58a9b-6\">Ouroboros Chronos\uff1a\u30b3\u30df\u30e5\u30cb\u30b1\u30fc\u30b7\u30e7\u30f3\u3068\u30bf\u30a4\u30df\u30f3\u30b0\u306e\u56de\u5fa9\u529b\u3092\u9ad8\u3081\u308b\u3088\u3046\u306b\u8a2d\u8a08\u3055\u308c\u3066\u3044\u308b<\/h5>\n\n\n\n<p>Ouroboros Chronos\u306e\u65b0\u3057\u3044\u7814\u7a76\u306f\u3001\u30d6\u30ed\u30c3\u30af\u30c1\u30a7\u30fc\u30f3\u6280\u8853\u304c\u3088\u308a\u5b89\u5168\u306b\u6642\u8a08\u3092\u540c\u671f\u3055\u305b\u308b\u3053\u3068\u3092\u53ef\u80fd\u306b\u3057\u307e\u3059\u3002Chronos\u306f\u3001\u305d\u308c\u81ea\u4f53\u304c\u6697\u53f7\u7684\u306b\u5b89\u5168\u306a\u30d6\u30ed\u30c3\u30af\u30c1\u30a7\u30fc\u30f3\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3042\u308a\u3001\u3055\u3089\u306b\u3001\u65b0\u3057\u3044\u6642\u523b\u540c\u671f\u30e1\u30ab\u30cb\u30ba\u30e0\u3092\u4ecb\u3057\u3066\u6b63\u78ba\u306a\u6642\u523b\u306e\u30bd\u30fc\u30b9\u3092\u63d0\u4f9b\u3057\u3001\u5916\u90e8\u3067\u30db\u30b9\u30c8\u3055\u308c\u305f\u6642\u8a08\u306e\u8106\u5f31\u6027\u3092\u6392\u9664\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30d6\u30ed\u30c3\u30af\u30c1\u30a7\u30fc\u30f3\u306f\u53d6\u5f15\u306b\u6b63\u78ba\u306a\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u3092\u4ed8\u4e0e\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u3001\u6642\u9593\u60c5\u5831\u3092\u72d9\u3046\u653b\u6483\u306b\u5bfe\u3057\u3066\u3082\u53f0\u5e33\u3092\u3088\u308a\u5f37\u56fa\u306b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u65b0\u3057\u3044\u30d7\u30ed\u30c8\u30b3\u30eb\u306f\u3001\u30ed\u30fc\u30ab\u30eb\u30bf\u30a4\u30e0\u3092\u5358\u4e00\u969c\u5bb3\u70b9\u306e\u306a\u3044\u7d71\u4e00\u3055\u308c\u305f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30af\u30ed\u30c3\u30af\u306b\u540c\u671f\u3055\u305b\u308b\u3053\u3068\u3067\u3001\u91cd\u8981\u306a\u901a\u4fe1\u3001\u8f38\u9001\u3001\u53d6\u5f15\u30b7\u30b9\u30c6\u30e0\u3001\u30a4\u30f3\u30d5\u30e9\u306e\u8010\u969c\u5bb3\u6027\u3092\u5287\u7684\u306b\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u7814\u7a76\u3092\u4e3b\u5c0e\u3057\u305f\u30a8\u30b8\u30f3\u30d0\u30e9\u5927\u5b66\u306e\u30d6\u30ed\u30c3\u30af\u30c1\u30a7\u30fc\u30f3\u6280\u8853\u7814\u7a76\u6240\u306e\u6240\u9577\u3067\u3042\u308a\u3001Input Output\u793e\u306e\u30c1\u30fc\u30d5\u30b5\u30a4\u30a8\u30f3\u30c6\u30a3\u30b9\u30c8\u3067\u3042\u308bAggelos Kiayias\u6559\u6388\u306f\u3001\u6b21\u306e\u3088\u3046\u306b\u8ff0\u3079\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote\"><p>\u771f\u306b\u5805\u7262\u306a\u5206\u6563\u578b\u91d1\u878d\u30b7\u30b9\u30c6\u30e0\u3092\u69cb\u7bc9\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u4e2d\u592e\u306e\u30bf\u30a4\u30e0\u30ad\u30fc\u30d1\u30fc\u3092\u4ecb\u3055\u305a\u306b\u6642\u8a08\u3092\u540c\u671f\u3055\u305b\u308b\u3068\u3044\u3046\u554f\u984c\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002\u79c1\u305f\u3061\u306f\u3001\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u306b\u9032\u5316\u3059\u308b\u5f53\u4e8b\u8005\u306e\u30b0\u30eb\u30fc\u30d7\u304c\u3001\u4efb\u610f\u306e\u53c2\u52a0\u30d1\u30bf\u30fc\u30f3\u306b\u5f93\u3063\u3066\u884c\u3063\u305f\u308a\u6765\u305f\u308a\u3059\u308b\u5834\u5408\u3067\u3082\u3001\u30ed\u30fc\u30ab\u30eb\u30af\u30ed\u30c3\u30af\u3092\u8abf\u6574\u3057\u3066\u4e00\u8cab\u6027\u3092\u6301\u305f\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u30d6\u30ed\u30c3\u30af\u30c1\u30a7\u30fc\u30f3\u30e1\u30ab\u30cb\u30ba\u30e0\u3092\u521d\u3081\u3066\u958b\u767a\u3057\u307e\u3057\u305f\u3002\u30d6\u30ed\u30c3\u30af\u30c1\u30a7\u30fc\u30f3\u30d9\u30fc\u30b9\u306e\u30b0\u30ed\u30fc\u30d0\u30eb\u30af\u30ed\u30c3\u30af\u3092\u958b\u767a\u3059\u308b\u3053\u3068\u3067\u3001\u79c1\u305f\u3061\u306f\u3001\u3088\u308a\u5b89\u5168\u3067\u6539\u3056\u3093\u3055\u308c\u306b\u304f\u3044\u6642\u9593\u30bd\u30fc\u30b9\u3078\u306e\u9053\u3092\u5207\u308a\u958b\u304d\u307e\u3057\u305f\u3002<\/p><p>\u3053\u306e\u79d1\u5b66\u7684\u306a\u30d6\u30ec\u30fc\u30af\u30b9\u30eb\u30fc\u306f\u3001\u3059\u3079\u3066\u306e\u53d6\u5f15\u306e\u6b63\u78ba\u306a\u30bf\u30a4\u30df\u30f3\u30b0\u3068\u5b8c\u5168\u306a\u30c8\u30ec\u30fc\u30b5\u30d3\u30ea\u30c6\u30a3\u3092\u53ef\u80fd\u306b\u3059\u308b\u3053\u3068\u3067\u3001\u5b8c\u5168\u306b\u76e3\u67fb\u53ef\u80fd\u3067\u4e0d\u6b63\u306e\u306a\u3044\u91d1\u878d\u30b7\u30b9\u30c6\u30e0\u306e\u69cb\u7bc9\u306b\u5411\u3051\u305f\u5927\u304d\u306a\u4e00\u6b69\u3068\u306a\u308b\u3067\u3057\u3087\u3046<\/p><\/blockquote>\n\n\n\n<p>\u8a73\u7d30\u306b\u3064\u3044\u3066\u306f\u3001<a href=\"https:\/\/eprint.iacr.org\/2019\/838.pdf\" data-type=\"URL\" data-id=\"https:\/\/eprint.iacr.org\/2019\/838.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">\u3053\u3061\u3089\u306e\u7814\u7a76\u767a\u8868<\/a>\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u8a18\u4e8b\u306e\u57f7\u7b46\u306b\u3042\u305f\u308a\u3001Rachel Bruce\u3001Jenny Corlett\u3001Rod Alexander\u3001Christian Badertscher\u306e\u5404\u6c0f\u304b\u3089\u3054\u610f\u898b\u3092\u3044\u305f\u3060\u304d\u307e\u3057\u305f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u4ee5\u4e0b\u306fIOG\u30d6\u30ed\u30b0\u306b\u63b2\u8f09\u3055\u308c\u305f\u8a18\u4e8b\u300cOuroboros Chronos provides the first high-resilience, cryptographic time source based on blockchain technology\u300d\u3092\u7ffb\u8a33\u3057\u305f\u3082\u306e\u3067\u3059\u3002 Ouroboros Chronos\u3001\u30d6\u30ed\u30c3\u30af\u30c1\u30a7\u30fc\u30f3\u6280\u8853\u306b\u57fa\u3065\u304f\u521d\u306e\u9ad8\u56de\u5fa9\u529b\u306e\u6697\u53f7\u5316\u3055\u308c\u305f\u6642\u9593\u6e90\u3092\u63d0\u4f9b \u3088\u308a\u6b63\u78ba\u306a\u30b0\u30ed\u30fc\u30d0\u30eb\u30bf\u30a4\u30e0\u30ad\u30fc\u30d4\u30f3\u30b0\u3092\u63d0\u4f9b\u3059\u308b\u305f\u3081\u306b\u8a2d\u8a08\u3055\u308c\u305fChronos\u306f\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u5411\u4e0a\u3068\u901a\u4fe1\u9045\u5ef6\u306b\u5bfe\u3059\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u56de\u5fa9\u529b\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002 By Olga Hryniuk 2021\u5e7410\u670827\u65e5 5 mins read Ouroboros Ch&hellip;","protected":false},"author":1,"featured_media":12378,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[67,21,35,1,38],"tags":[],"class_list":{"0":"post-12377","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-iog","8":"category-21","9":"category-blog","10":"category-japanese","11":"category-38"},"featured_image_urls":{"full":["https:\/\/sipo.tokyo\/wp-content\/uploads\/2021\/10\/OuroborosChronos.webp",800,400,false],"thumbnail":["https:\/\/sipo.tokyo\/wp-content\/uploads\/2021\/10\/OuroborosChronos-150x150.webp",150,150,true],"medium":["https:\/\/sipo.tokyo\/wp-content\/uploads\/2021\/10\/OuroborosChronos-300x150.webp",300,150,true],"medium_large":["https:\/\/sipo.tokyo\/wp-content\/uploads\/2021\/10\/OuroborosChronos-768x384.webp",768,384,true],"large":["https:\/\/sipo.tokyo\/wp-content\/uploads\/2021\/10\/OuroborosChronos.webp",800,400,false],"1536x1536":["https:\/\/sipo.tokyo\/wp-content\/uploads\/2021\/10\/OuroborosChronos.webp",800,400,false],"2048x2048":["https:\/\/sipo.tokyo\/wp-content\/uploads\/2021\/10\/OuroborosChronos.webp",800,400,false],"dp-widget-thumb":["https:\/\/sipo.tokyo\/wp-content\/uploads\/2021\/10\/OuroborosChronos-140x96.webp",140,96,true],"dp-widget-thumb-2x":["https:\/\/sipo.tokyo\/wp-content\/uploads\/2021\/10\/OuroborosChronos-280x192.webp",280,192,true],"dp-related-thumb":["https:\/\/sipo.tokyo\/wp-content\/uploads\/2021\/10\/OuroborosChronos-250x154.webp",250,154,true],"dp-related-thumb-2x":["https:\/\/sipo.tokyo\/wp-content\/uploads\/2021\/10\/OuroborosChronos-500x308.webp",500,308,true],"dp-archive-thumb":["https:\/\/sipo.tokyo\/wp-content\/uploads\/2021\/10\/OuroborosChronos-450x225.webp",450,225,true],"dp-archive-thumb-2x":["https:\/\/sipo.tokyo\/wp-content\/uploads\/2021\/10\/OuroborosChronos.webp",800,400,false]},"category_list":"<a href=\"https:\/\/sipo.tokyo\/?cat=67\" rel=\"category\">IOG\u30d6\u30ed\u30b0<\/a>, <a href=\"https:\/\/sipo.tokyo\/?cat=21\" rel=\"category\">\u30cb\u30e5\u30fc\u30b9<\/a>, <a href=\"https:\/\/sipo.tokyo\/?cat=35\" rel=\"category\">\u30d6\u30ed\u30b0<\/a>, <a href=\"https:\/\/sipo.tokyo\/?cat=1\" rel=\"category\">\u65e5\u672c\u8a9e\u7248<\/a>, <a href=\"https:\/\/sipo.tokyo\/?cat=38\" rel=\"category\">\u7ffb\u8a33<\/a>","author_info":{"name":"sition","url":"https:\/\/sipo.tokyo\/?author=1"},"comments_num":"0 comments","_links":{"self":[{"href":"https:\/\/sipo.tokyo\/index.php?rest_route=\/wp\/v2\/posts\/12377","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sipo.tokyo\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sipo.tokyo\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sipo.tokyo\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sipo.tokyo\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=12377"}],"version-history":[{"count":3,"href":"https:\/\/sipo.tokyo\/index.php?rest_route=\/wp\/v2\/posts\/12377\/revisions"}],"predecessor-version":[{"id":12517,"href":"https:\/\/sipo.tokyo\/index.php?rest_route=\/wp\/v2\/posts\/12377\/revisions\/12517"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sipo.tokyo\/index.php?rest_route=\/wp\/v2\/media\/12378"}],"wp:attachment":[{"href":"https:\/\/sipo.tokyo\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=12377"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sipo.tokyo\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=12377"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sipo.tokyo\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=12377"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}