{"image_url":null,"published":"2018-01-21 14:43:26","blog_url":"https://y-nakajo.hatenablog.com/","author_name":"y_nakajo","blog_title":"\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3068\u304b\u30aa\u30fc\u30c0\u30fc\u3068\u304b","author_url":"https://blog.hatena.ne.jp/y_nakajo/","version":"1.0","categories":["Ethereum","Solidity"],"width":"100%","description":"\u30d6\u30ed\u30c3\u30af\u30c1\u30a7\u30fc\u30f3\u3092\u5229\u7528\u3059\u308b\u5834\u5408\u3001\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0\u7b49\u306e\u554f\u984c\u304b\u3089\u4f55\u304b\u3057\u3089\u30aa\u30d5\u30c1\u30a7\u30fc\u30f3\u3067\u627f\u8a8d\u3092\u884c\u3044\u3001\u6700\u5f8c\u306e\u7d50\u679c\u3092\u30d6\u30ed\u30c3\u30af\u30c1\u30a7\u30fc\u30f3\u306b\u767b\u9332\u3059\u308b\u3002\u3068\u3044\u3046\u3082\u306e\u3092\u5b9f\u88c5\u3057\u305f\u304f\u306a\u308b\u3053\u3068\u304c\u591a\u3005\u3042\u308a\u307e\u3059\u3002\u4eca\u56de\u306fEthereum\u3067\u30aa\u30d5\u30c1\u30a7\u30fc\u30f3\u3067\u306e\u3084\u308a\u53d6\u308a\u3092\u4fdd\u8a3c\u3059\u308b\u305f\u3081\u306e\u7f72\u540d\u691c\u8a3c\u306e\u3084\u308a\u65b9\u306b\u3064\u3044\u3066\u307e\u3068\u3081\u3066\u307f\u307e\u3057\u305f\u3002 Ethereum(=Solidity)\u3067\u306e\u7f72\u540d\u691c\u8a3c\u306e\u6982\u8981 web3.eth.sign\u3092\u7528\u3044\u3066message hash\u306e\u7f72\u540d\u3092\u751f\u6210\u3059\u308b\u3002 Contract\u306b\u4e0a\u8a18\u306e\u7f72\u540d\u3068\u305d\u306e\u5143\u3068\u306a\u3063\u305fmessage hash\u3092\u9001\u308b Contract\u3067\u306fecrecover\u3092\u4f7f\u3063\u3066message hash\u3068\u7f72\u540d\u304b\u3089\u7f72\u540d\u306b\u4f7f\u308f\u308c\u305f\u30a2\u30c9\u30ec\u30b9\u3092\u2026","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fy-nakajo.hatenablog.com%2Fentry%2F2018%2F01%2F21%2F144326\" title=\"Ethereum\u3067Solidity\u3092\u4f7f\u3063\u305f\u7f72\u540d\u691c\u8a3c\u306e\u3084\u308a\u65b9 - \u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3068\u304b\u30aa\u30fc\u30c0\u30fc\u3068\u304b\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","provider_url":"https://hatena.blog","title":"Ethereum\u3067Solidity\u3092\u4f7f\u3063\u305f\u7f72\u540d\u691c\u8a3c\u306e\u3084\u308a\u65b9","url":"https://y-nakajo.hatenablog.com/entry/2018/01/21/144326","height":"190","provider_name":"Hatena Blog","type":"rich"}