{"id":296652,"date":"2025-07-09T11:45:53","date_gmt":"2025-07-09T11:45:53","guid":{"rendered":"https:\/\/pocketoption.com\/blog\/news-events\/data\/what-is-a-bitcoin-address-2\/"},"modified":"2025-07-09T11:45:53","modified_gmt":"2025-07-09T11:45:53","slug":"what-is-a-bitcoin-address","status":"publish","type":"post","link":"https:\/\/pocketoption.com\/blog\/vt\/knowledge-base\/learning\/what-is-a-bitcoin-address\/","title":{"rendered":"\u0110\u1ecba ch\u1ec9 Bitcoin l\u00e0 g\u00ec: Ki\u1ebfn tr\u00fac M\u1eadt m\u00e3 H\u1ed7 tr\u1ee3 Quy\u1ec1n s\u1edf h\u1eefu Ti\u1ec1n t\u1ec7 K\u1ef9 thu\u1eadt s\u1ed1"},"content":{"rendered":"<div id=\"root\"><div id=\"wrap-img-root\"><\/div><\/div>","protected":false},"excerpt":{"rendered":"","protected":false},"author":50,"featured_media":251237,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[17],"tags":[46,28,36,45,44],"class_list":["post-296652","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-learning","tag-how","tag-investment","tag-pattern","tag-stock","tag-strategy"],"acf":{"h1":"Ph\u00e2n T\u00edch To\u00e1n H\u1ecdc c\u1ee7a Pocket Option v\u1ec1 \u0110\u1ecba Ch\u1ec9 Bitcoin l\u00e0 g\u00ec","h1_source":{"label":"H1","type":"text","formatted_value":"Ph\u00e2n T\u00edch To\u00e1n H\u1ecdc c\u1ee7a Pocket Option v\u1ec1 \u0110\u1ecba Ch\u1ec9 Bitcoin l\u00e0 g\u00ec"},"description":"\u0110\u1ecba ch\u1ec9 Bitcoin l\u00e0 g\u00ec? Kh\u00e1m ph\u00e1 to\u00e1n h\u1ecdc ch\u00ednh x\u00e1c \u0111\u1eb1ng sau nh\u1eefng \u0111\u1ecbnh danh m\u1eadt m\u00e3 n\u00e0y, bao g\u1ed3m c\u00e1c h\u00e0m b\u0103m, \u0111\u01b0\u1eddng cong elliptic v\u00e0 c\u01a1 ch\u1ebf b\u1ea3o m\u1eadt. Ph\u00e2n t\u00edch chuy\u00ean s\u00e2u c\u1ee7a Pocket Option ti\u1ebft l\u1ed9 c\u00e1ch c\u00e1c kh\u00f3a 160-bit b\u1ea3o v\u1ec7 t\u00e0i s\u1ea3n tr\u1ecb gi\u00e1 h\u00e0ng ngh\u00ecn t\u1ef7 \u0111\u00f4 la.","description_source":{"label":"Description","type":"textarea","formatted_value":"\u0110\u1ecba ch\u1ec9 Bitcoin l\u00e0 g\u00ec? Kh\u00e1m ph\u00e1 to\u00e1n h\u1ecdc ch\u00ednh x\u00e1c \u0111\u1eb1ng sau nh\u1eefng \u0111\u1ecbnh danh m\u1eadt m\u00e3 n\u00e0y, bao g\u1ed3m c\u00e1c h\u00e0m b\u0103m, \u0111\u01b0\u1eddng cong elliptic v\u00e0 c\u01a1 ch\u1ebf b\u1ea3o m\u1eadt. Ph\u00e2n t\u00edch chuy\u00ean s\u00e2u c\u1ee7a Pocket Option ti\u1ebft l\u1ed9 c\u00e1ch c\u00e1c kh\u00f3a 160-bit b\u1ea3o v\u1ec7 t\u00e0i s\u1ea3n tr\u1ecb gi\u00e1 h\u00e0ng ngh\u00ecn t\u1ef7 \u0111\u00f4 la."},"intro":"Hi\u1ec3u v\u1ec1 \u0111\u1ecba ch\u1ec9 Bitcoin \u0111\u00f2i h\u1ecfi ph\u1ea3i kh\u00e1m ph\u00e1 c\u00e1c c\u01a1 ch\u1ebf m\u1eadt m\u00e3 ch\u00ednh x\u00e1c \u0111\u1eb1ng sau nh\u1eefng \u0111\u1ecbnh danh d\u00e0i 26-35 k\u00fd t\u1ef1 n\u00e0y. D\u1ef1a tr\u00ean to\u00e1n h\u1ecdc \u0111\u01b0\u1eddng cong elliptic v\u00e0 c\u00e1c thu\u1eadt to\u00e1n b\u0103m an to\u00e0n, \u0111\u1ecba ch\u1ec9 Bitcoin cho ph\u00e9p x\u00e1c minh quy\u1ec1n s\u1edf h\u1eefu kh\u00f4ng c\u1ea7n tin c\u1eady trong m\u1ed9t h\u1ec7 sinh th\u00e1i tr\u1ecb gi\u00e1 h\u01a1n 1 ngh\u00ecn t\u1ef7 \u0111\u00f4 la. Ph\u00e2n t\u00edch n\u00e0y gi\u1ea3i m\u00e3 c\u00e1c n\u1ec1n t\u1ea3ng to\u00e1n h\u1ecdc l\u00e0m cho \u0111\u1ecba ch\u1ec9 Bitcoin v\u1eeba ch\u1ed1ng l\u1ea1i l\u01b0\u1ee3ng t\u1eed v\u1eeba th\u1ef1c t\u1ebf cho c\u00e1c giao d\u1ecbch h\u00e0ng ng\u00e0y.","intro_source":{"label":"Intro","type":"text","formatted_value":"Hi\u1ec3u v\u1ec1 \u0111\u1ecba ch\u1ec9 Bitcoin \u0111\u00f2i h\u1ecfi ph\u1ea3i kh\u00e1m ph\u00e1 c\u00e1c c\u01a1 ch\u1ebf m\u1eadt m\u00e3 ch\u00ednh x\u00e1c \u0111\u1eb1ng sau nh\u1eefng \u0111\u1ecbnh danh d\u00e0i 26-35 k\u00fd t\u1ef1 n\u00e0y. D\u1ef1a tr\u00ean to\u00e1n h\u1ecdc \u0111\u01b0\u1eddng cong elliptic v\u00e0 c\u00e1c thu\u1eadt to\u00e1n b\u0103m an to\u00e0n, \u0111\u1ecba ch\u1ec9 Bitcoin cho ph\u00e9p x\u00e1c minh quy\u1ec1n s\u1edf h\u1eefu kh\u00f4ng c\u1ea7n tin c\u1eady trong m\u1ed9t h\u1ec7 sinh th\u00e1i tr\u1ecb gi\u00e1 h\u01a1n 1 ngh\u00ecn t\u1ef7 \u0111\u00f4 la. Ph\u00e2n t\u00edch n\u00e0y gi\u1ea3i m\u00e3 c\u00e1c n\u1ec1n t\u1ea3ng to\u00e1n h\u1ecdc l\u00e0m cho \u0111\u1ecba ch\u1ec9 Bitcoin v\u1eeba ch\u1ed1ng l\u1ea1i l\u01b0\u1ee3ng t\u1eed v\u1eeba th\u1ef1c t\u1ebf cho c\u00e1c giao d\u1ecbch h\u00e0ng ng\u00e0y."},"body_html":"<div class=\"custom-html-container\">\n<h2>N\u1ec1n t\u1ea3ng M\u1eadt m\u00e3 c\u1ee7a \u0110\u1ecba ch\u1ec9 Bitcoin<\/h2>\nM\u1ed9t \u0111\u1ecba ch\u1ec9 Bitcoin ho\u1ea1t \u0111\u1ed9ng nh\u01b0 giao di\u1ec7n ch\u00ednh gi\u1eefa ng\u01b0\u1eddi d\u00f9ng v\u00e0 ki\u1ebfn tr\u00fac to\u00e1n h\u1ecdc ph\u1ee9c t\u1ea1p c\u1ee7a m\u1ea1ng Bitcoin. V\u1ec1 c\u1ed1t l\u00f5i, \u0111\u1ecba ch\u1ec9 Bitcoin l\u00e0 g\u00ec? N\u00f3i \u0111\u01a1n gi\u1ea3n, \u0111\u00f3 l\u00e0 m\u1ed9t \u0111\u1ecbnh danh \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1eb1ng m\u1eadt m\u00e3 (th\u01b0\u1eddng t\u1eeb 26-35 k\u00fd t\u1ef1) cho ph\u00e9p nh\u1eadn Bitcoin. Kh\u00f4ng gi\u1ed1ng nh\u01b0 s\u1ed1 t\u00e0i kho\u1ea3n ng\u00e2n h\u00e0ng do c\u00e1c t\u1ed5 ch\u1ee9c t\u1eadp trung ph\u00e1t h\u00e0nh, \u0111\u1ecba ch\u1ec9 Bitcoin xu\u1ea5t ph\u00e1t t\u1eeb to\u00e1n h\u1ecdc thu\u1ea7n t\u00fay\u2014cho ph\u00e9p b\u1ea5t k\u1ef3 ai t\u1ea1o ra s\u1ed1 l\u01b0\u1ee3ng \u0111\u1ecba ch\u1ec9 kh\u00f4ng gi\u1edbi h\u1ea1n ngay l\u1eadp t\u1ee9c m\u00e0 kh\u00f4ng c\u1ea7n s\u1ef1 cho ph\u00e9p ho\u1eb7c \u0111\u0103ng k\u00fd.\n\nQu\u00e1 tr\u00ecnh t\u1ea1o \u0111\u1ecba ch\u1ec9 Bitcoin b\u1eaft \u0111\u1ea7u v\u1edbi Thu\u1eadt to\u00e1n Ch\u1eef k\u00fd S\u1ed1 \u0110\u01b0\u1eddng cong Elliptic (ECDSA) t\u1ea1o ra m\u1ed9t c\u1eb7p kh\u00f3a m\u1eadt m\u00e3. Kh\u00f3a ri\u00eang t\u01b0 (m\u1ed9t s\u1ed1 ng\u1eabu nhi\u00ean 256-bit) tr\u1ea3i qua ph\u00e9p nh\u00e2n \u0111\u01b0\u1eddng cong elliptic \u0111\u1ec3 t\u1ea1o ra kh\u00f3a c\u00f4ng khai\u2014m\u1ed9t qu\u00e1 tr\u00ecnh ch\u1ec9 m\u1ea5t v\u00e0i micro gi\u00e2y theo m\u1ed9t h\u01b0\u1edbng nh\u01b0ng c\u1ea7n h\u00e0ng t\u1ef7 n\u0103m \u0111\u1ec3 \u0111\u1ea3o ng\u01b0\u1ee3c b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c si\u00eau m\u00e1y t\u00ednh m\u1ea1nh nh\u1ea5t hi\u1ec7n nay. S\u1ef1 b\u1ea5t \u0111\u1ed1i x\u1ee9ng to\u00e1n h\u1ecdc n\u00e0y t\u1ea1o ra n\u1ec1n t\u1ea3ng b\u1ea3o m\u1eadt b\u1ea3o v\u1ec7 h\u01a1n 800 t\u1ef7 \u0111\u00f4 la t\u00e0i s\u1ea3n tr\u00ean m\u1ea1ng Bitcoin.\n<div class=\"table-container\">\n<table>\n<thead>\n<tr>\n<th>Th\u00e0nh ph\u1ea7n<\/th>\n<th>Ch\u1ee9c n\u0103ng To\u00e1n h\u1ecdc<\/th>\n<th>M\u1ee5c \u0111\u00edch<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Kh\u00f3a ri\u00eang t\u01b0<\/td>\n<td>S\u1ed1 nguy\u00ean ng\u1eabu nhi\u00ean 256-bit<\/td>\n<td>Gi\u00e1 tr\u1ecb b\u00ed m\u1eadt d\u00f9ng \u0111\u1ec3 k\u00fd giao d\u1ecbch<\/td>\n<\/tr>\n<tr>\n<td>Kh\u00f3a c\u00f4ng khai<\/td>\n<td>K = k \u00d7 G (trong \u0111\u00f3 k l\u00e0 kh\u00f3a ri\u00eang t\u01b0, G l\u00e0 \u0111i\u1ec3m sinh)<\/td>\n<td>\u0110\u01b0\u1ee3c t\u1ea1o ra t\u1eeb kh\u00f3a ri\u00eang t\u01b0 b\u1eb1ng ECDSA<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ecba ch\u1ec9 Bitcoin<\/td>\n<td>RIPEMD160(SHA256(Kh\u00f3a c\u00f4ng khai))<\/td>\n<td>\u0110\u1ecbnh danh c\u00f4ng khai \u0111\u1ec3 nh\u1eadn ti\u1ec1n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2>Qu\u00e1 tr\u00ecnh Bi\u1ebfn \u0111\u1ed5i To\u00e1n h\u1ecdc<\/h2>\nH\u00e0nh tr\u00ecnh t\u1eeb kh\u00f3a ri\u00eang t\u01b0 \u0111\u1ebfn \u0111\u1ecba ch\u1ec9 Bitcoin bao g\u1ed3m nhi\u1ec1u bi\u1ebfn \u0111\u1ed5i m\u1eadt m\u00e3, m\u1ed7i bi\u1ebfn \u0111\u1ed5i th\u00eam c\u00e1c l\u1edbp b\u1ea3o m\u1eadt v\u00e0 ch\u1ee9c n\u0103ng. Hi\u1ec3u c\u00e1c ph\u00e9p to\u00e1n n\u00e0y cung c\u1ea5p c\u00e1i nh\u00ecn s\u00e2u s\u1eafc v\u1ec1 c\u00e1ch Bitcoin c\u00e2n b\u1eb1ng gi\u1eefa b\u1ea3o m\u1eadt t\u00ednh to\u00e1n v\u00e0 kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng th\u1ef1c t\u1ebf.\n<h3>T\u1eeb Kh\u00f3a Ri\u00eang t\u01b0 \u0111\u1ebfn Kh\u00f3a C\u00f4ng khai: To\u00e1n h\u1ecdc \u0110\u01b0\u1eddng cong Elliptic<\/h3>\nBitcoin th\u1ef1c hi\u1ec7n \u0111\u01b0\u1eddng cong elliptic secp256k1\u2014\u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n to\u00e1n h\u1ecdc l\u00e0 y\u00b2 = x\u00b3 + 7 tr\u00ean m\u1ed9t tr\u01b0\u1eddng h\u1eefu h\u1ea1n c\u00f3 b\u1eadc 2^256 - 2^32 - 977. Trong qu\u00e1 tr\u00ecnh t\u1ea1o kh\u00f3a c\u00f4ng khai, kh\u00f3a ri\u00eang t\u01b0 c\u1ee7a b\u1ea1n (m\u1ed9t s\u1ed1 nguy\u00ean 256-bit gi\u1eefa 1 v\u00e0 115792089237316195423570985008687907852837564279074904382605163141518161494337) nh\u00e2n v\u1edbi m\u1ed9t \u0111i\u1ec3m sinh c\u1ed1 \u0111\u1ecbnh G tr\u00ean \u0111\u01b0\u1eddng cong n\u00e0y. Ph\u00e9p to\u00e1n ch\u00ednh x\u00e1c n\u00e0y t\u1ea1o ra m\u1ed9t \u0111i\u1ec3m \u0111\u01b0\u1eddng cong duy nh\u1ea5t kh\u00e1c\u2014kh\u00f3a c\u00f4ng khai c\u1ee7a b\u1ea1n\u2014theo c\u00f4ng th\u1ee9c:\n\nKh\u00f3a C\u00f4ng khai = Kh\u00f3a Ri\u00eang t\u01b0 \u00d7 \u0110i\u1ec3m Sinh\n\nPh\u00e9p nh\u00e2n n\u00e0y t\u1eadn d\u1ee5ng thu\u1ed9c t\u00ednh \"c\u1eeda b\u1eaby\" c\u1ee7a \u0111\u01b0\u1eddng cong elliptic, n\u01a1i t\u00ednh to\u00e1n ti\u1ebfn l\u00e0 \u0111\u01a1n gi\u1ea3n nh\u01b0ng ng\u01b0\u1ee3c l\u1ea1i (t\u00ecm kh\u00f3a ri\u00eang t\u01b0 t\u1eeb kh\u00f3a c\u00f4ng khai) s\u1ebd y\u00eau c\u1ea7u gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 logarit r\u1eddi r\u1ea1c - m\u1ed9t nhi\u1ec7m v\u1ee5 \u0111\u01b0\u1ee3c coi l\u00e0 kh\u00f4ng th\u1ec3 th\u1ef1c hi\u1ec7n \u0111\u01b0\u1ee3c v\u1edbi c\u00f4ng ngh\u1ec7 hi\u1ec7n t\u1ea1i, c\u1ea7n h\u00e0ng t\u1ef7 n\u0103m ngay c\u1ea3 v\u1edbi si\u00eau m\u00e1y t\u00ednh.\n<div class=\"table-container\">\n<table>\n<thead>\n<tr>\n<th>B\u01b0\u1edbc Thao t\u00e1c<\/th>\n<th>C\u00f4ng th\u1ee9c To\u00e1n h\u1ecdc<\/th>\n<th>\u0110\u1ed9 d\u00e0i Bit<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>T\u1ea1o Kh\u00f3a Ri\u00eang t\u01b0<\/td>\n<td>L\u1ef1a ch\u1ecdn ng\u1eabu nhi\u00ean t\u1eeb ph\u1ea1m vi [1, n-1]<\/td>\n<td>256 bit<\/td>\n<\/tr>\n<tr>\n<td>T\u00ednh To\u00e1n Kh\u00f3a C\u00f4ng khai<\/td>\n<td>K = k \u00d7 G (ph\u00e9p nh\u00e2n \u0111i\u1ec3m)<\/td>\n<td>512 bit (kh\u00f4ng n\u00e9n)<\/td>\n<\/tr>\n<tr>\n<td>N\u00e9n Kh\u00f3a C\u00f4ng khai<\/td>\n<td>K<sub>n\u00e9n<\/sub> = t\u1ecda \u0111\u1ed9 x + ti\u1ec1n t\u1ed1<\/td>\n<td>257 bit (n\u00e9n)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\nN\u1ec1n t\u1ea3ng to\u00e1n h\u1ecdc n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng ng\u01b0\u1eddi d\u00f9ng tr\u00ean c\u00e1c n\u1ec1n t\u1ea3ng nh\u01b0 Pocket Option c\u00f3 th\u1ec3 giao d\u1ecbch v\u1edbi s\u1ef1 t\u1ef1 tin, bi\u1ebft r\u1eb1ng \u0111\u1ecba ch\u1ec9 Bitcoin c\u1ee7a h\u1ecd \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 b\u1edfi c\u00e1c nguy\u00ean t\u1eafc m\u1eadt m\u00e3 m\u1ea1nh m\u1ebd. Khi giao d\u1ecbch ho\u1eb7c \u0111\u1ea7u t\u01b0 qua Pocket Option, ng\u01b0\u1eddi d\u00f9ng g\u1eb7p c\u00e1c \u0111\u1ecba ch\u1ec9 n\u00e0y nh\u01b0 \u0111i\u1ec3m \u0111\u1ebfn cho vi\u1ec7c r\u00fat ti\u1ec1n ho\u1eb7c ngu\u1ed3n g\u1ed1c c\u1ee7a c\u00e1c kho\u1ea3n ti\u1ec1n g\u1eedi.\n<h3>T\u1eeb Kh\u00f3a C\u00f4ng khai \u0111\u1ebfn \u0110\u1ecba ch\u1ec9 Bitcoin: C\u00e1c H\u00e0m B\u0103m<\/h3>\nKhi kh\u00f3a c\u00f4ng khai \u0111\u01b0\u1ee3c t\u1ea1o ra, \u0111\u1ecba ch\u1ec9 Bitcoin v\u1eabn c\u1ea7n \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh th\u00f4ng qua c\u00e1c thao t\u00e1c m\u1eadt m\u00e3 b\u1ed5 sung. Kh\u00f3a c\u00f4ng khai tr\u1ea3i qua hai thao t\u00e1c b\u0103m:\n<ol>\n  <li>\u0110\u1ea7u ti\u00ean, SHA-256 (Thu\u1eadt to\u00e1n B\u0103m B\u1ea3o m\u1eadt 256-bit) bi\u1ebfn \u0111\u1ed5i kh\u00f3a c\u00f4ng khai 512-bit th\u00e0nh m\u1ed9t b\u1ea3n t\u00f3m t\u1eaft 256-bit<\/li>\n  <li>Ti\u1ebfp theo, RIPEMD-160 n\u00e9n b\u1ea3n t\u00f3m t\u1eaft 256-bit n\u00e0y th\u00e0nh m\u1ed9t b\u0103m 160-bit d\u1ec5 qu\u1ea3n l\u00fd h\u01a1n (20 byte)<\/li>\n<\/ol>\nPh\u01b0\u01a1ng ph\u00e1p b\u0103m k\u00e9p n\u00e0y ph\u1ee5c v\u1ee5 nhi\u1ec1u m\u1ee5c \u0111\u00edch: n\u00f3 r\u00fat ng\u1eafn \u0111\u1ed9 d\u00e0i c\u1ee7a \u0111\u1ecbnh danh t\u1eeb 512 bit xu\u1ed1ng 160 bit \u0111\u1ec3 s\u1eed d\u1ee5ng th\u1ef1c t\u1ebf, cung c\u1ea5p m\u1ed9t l\u1edbp b\u1ea3o m\u1eadt b\u1ed5 sung ch\u1ed1ng l\u1ea1i c\u00e1c m\u1ed1i \u0111e d\u1ecda t\u1eeb m\u00e1y t\u00ednh l\u01b0\u1ee3ng t\u1eed ti\u1ec1m n\u0103ng, v\u00e0 t\u1ea1o ra m\u1ed9t \u0111\u1ecbnh danh gi\u1ed1ng nh\u01b0 d\u1ea5u v\u00e2n tay d\u1ec5 l\u00e0m vi\u1ec7c h\u01a1n so v\u1edbi kh\u00f3a c\u00f4ng khai \u0111\u1ea7y \u0111\u1ee7.\n<div class=\"table-container\">\n<table>\n<thead>\n<tr>\n<th>B\u01b0\u1edbc B\u0103m<\/th>\n<th>Ch\u1ee9c n\u0103ng<\/th>\n<th>K\u00edch th\u01b0\u1edbc \u0110\u1ea7u ra<\/th>\n<th>M\u1ee5c \u0111\u00edch<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>B\u0103m \u0110\u1ea7u ti\u00ean<\/td>\n<td>SHA-256(Kh\u00f3a C\u00f4ng khai)<\/td>\n<td>256 bit<\/td>\n<td>Bi\u1ebfn \u0111\u1ed5i ban \u0111\u1ea7u<\/td>\n<\/tr>\n<tr>\n<td>B\u0103m Th\u1ee9 hai<\/td>\n<td>RIPEMD-160(K\u1ebft qu\u1ea3 SHA-256)<\/td>\n<td>160 bit<\/td>\n<td>Gi\u1ea3m k\u00edch th\u01b0\u1edbc v\u00e0 b\u1ea3o m\u1eadt b\u1ed5 sung<\/td>\n<\/tr>\n<tr>\n<td>T\u1ea1o Checksum<\/td>\n<td>4 byte \u0111\u1ea7u ti\u00ean c\u1ee7a SHA-256(SHA-256(Phi\u00ean b\u1ea3n + B\u0103m RIPEMD-160))<\/td>\n<td>32 bit<\/td>\n<td>Ph\u00e1t hi\u1ec7n l\u1ed7i<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2>\u0110\u1ecbnh d\u1ea1ng \u0110\u1ecba ch\u1ec9 Bitcoin v\u00e0 S\u1ef1 Kh\u00e1c bi\u1ec7t To\u00e1n h\u1ecdc c\u1ee7a Ch\u00fang<\/h2>\nH\u1ec7 sinh th\u00e1i Bitcoin \u0111\u00e3 ph\u00e1t tri\u1ec3n \u0111\u1ec3 t\u00edch h\u1ee3p c\u00e1c \u0111\u1ecbnh d\u1ea1ng \u0111\u1ecba ch\u1ec9 kh\u00e1c nhau, m\u1ed7i \u0111\u1ecbnh d\u1ea1ng c\u00f3 c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m to\u00e1n h\u1ecdc v\u00e0 m\u1ee5c \u0111\u00edch c\u1ee5 th\u1ec3. Hi\u1ec3u c\u00e1c \u0111\u1ecbnh d\u1ea1ng n\u00e0y l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi b\u1ea5t k\u1ef3 ai giao d\u1ecbch v\u1edbi ti\u1ec1n \u0111i\u1ec7n t\u1eed tr\u00ean c\u00e1c n\u1ec1n t\u1ea3ng giao d\u1ecbch nh\u01b0 Pocket Option.\n<div class=\"table-container\">\n<table>\n<thead>\n<tr>\n<th>\u0110\u1ecbnh d\u1ea1ng \u0110\u1ecba ch\u1ec9<\/th>\n<th>Ti\u1ec1n t\u1ed1<\/th>\n<th>\u0110\u1eb7c \u0111i\u1ec3m To\u00e1n h\u1ecdc<\/th>\n<th>Tr\u01b0\u1eddng h\u1ee3p S\u1eed d\u1ee5ng<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>P2PKH (Legacy)<\/td>\n<td>1<\/td>\n<td>M\u00e3 h\u00f3a Base58Check c\u1ee7a RIPEMD160(SHA256(Kh\u00f3a C\u00f4ng khai)), d\u00e0i 25-34 k\u00fd t\u1ef1<\/td>\n<td>Giao d\u1ecbch ti\u00eau chu\u1ea9n<\/td>\n<\/tr>\n<tr>\n<td>P2SH<\/td>\n<td>3<\/td>\n<td>M\u00e3 h\u00f3a Base58Check c\u1ee7a RIPEMD160(SHA256(Script))<\/td>\n<td>K\u1ecbch b\u1ea3n \u0111a ch\u1eef k\u00fd v\u00e0 ph\u1ee9c t\u1ea1p<\/td>\n<\/tr>\n<tr>\n<td>Bech32 (SegWit)<\/td>\n<td>bc1<\/td>\n<td>M\u00e3 h\u00f3a Bech32 v\u1edbi kh\u1ea3 n\u0103ng ph\u00e1t hi\u1ec7n l\u1ed7i c\u1ea3i ti\u1ebfn, s\u1eed d\u1ee5ng ph\u00e9p chia \u0111a th\u1ee9c trong GF(2)<\/td>\n<td>Giao d\u1ecbch Segregated Witness<\/td>\n<\/tr>\n<tr>\n<td>Taproot<\/td>\n<td>bc1p<\/td>\n<td>M\u00e3 h\u00f3a Bech32m v\u1edbi ch\u1eef k\u00fd Schnorr, t\u1eadn d\u1ee5ng C\u00e2y K\u1ecbch b\u1ea3n Thay th\u1ebf Merkleized (MAST)<\/td>\n<td>T\u0103ng c\u01b0\u1eddng quy\u1ec1n ri\u00eang t\u01b0 v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\nM\u1ed7i \u0111\u1ecbnh d\u1ea1ng \u0111\u1ecba ch\u1ec9 n\u00e0y s\u1eed d\u1ee5ng c\u00e1c s\u01a1 \u0111\u1ed3 m\u00e3 h\u00f3a to\u00e1n h\u1ecdc kh\u00e1c nhau \u0111\u1ec3 bi\u1ec3u di\u1ec5n b\u0103m m\u1eadt m\u00e3 c\u01a1 b\u1ea3n. \u0110\u1ecbnh d\u1ea1ng g\u1ed1c s\u1eed d\u1ee5ng m\u00e3 h\u00f3a Base58Check, chuy\u1ec3n \u0111\u1ed5i b\u0103m nh\u1ecb ph\u00e2n th\u00e0nh \u0111\u1ecbnh d\u1ea1ng d\u1ec5 \u0111\u1ecdc h\u01a1n cho con ng\u01b0\u1eddi trong khi lo\u1ea1i b\u1ecf c\u00e1c k\u00fd t\u1ef1 gi\u1ed1ng nhau (nh\u01b0 0, O, I, l) \u0111\u1ec3 gi\u1ea3m l\u1ed7i sao ch\u00e9p.\n\n\u0110\u1ecbnh d\u1ea1ng Bech32 m\u1edbi h\u01a1n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c \u0111\u1ecba ch\u1ec9 SegWit th\u1ef1c hi\u1ec7n m\u1ed9t thu\u1eadt to\u00e1n ph\u00e1t hi\u1ec7n l\u1ed7i tinh vi h\u01a1n b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng m\u1ed9t bi\u1ebfn th\u1ec3 c\u1ee5 th\u1ec3 c\u1ee7a m\u00e3 BCH, cho ph\u00e9p n\u00f3 ph\u00e1t hi\u1ec7n t\u1ea5t c\u1ea3 c\u00e1c l\u1ed7i k\u00fd t\u1ef1 \u0111\u01a1n v\u00e0 g\u1ea7n nh\u01b0 t\u1ea5t c\u1ea3 c\u00e1c ho\u00e1n v\u1ecb c\u1ee7a c\u00e1c k\u00fd t\u1ef1 li\u1ec1n k\u1ec1. C\u1ea3i ti\u1ebfn to\u00e1n h\u1ecdc n\u00e0y gi\u1ea3m \u0111\u00e1ng k\u1ec3 kh\u1ea3 n\u0103ng g\u1eedi ti\u1ec1n \u0111\u1ebfn c\u00e1c \u0111\u1ecba ch\u1ec9 nh\u1eadp sai.\n<h2>X\u00e1c su\u1ea5t v\u00e0 B\u1ea3o m\u1eadt: To\u00e1n h\u1ecdc c\u1ee7a Va ch\u1ea1m \u0110\u1ecba ch\u1ec9 Bitcoin<\/h2>\nM\u1ed9t c\u00e2u h\u1ecfi quan tr\u1ecdng khi th\u1ea3o lu\u1eadn v\u1ec1 \u0111\u1ecba ch\u1ec9 Bitcoin l\u00e0 kh\u1ea3 n\u0103ng l\u00fd thuy\u1ebft c\u1ee7a va ch\u1ea1m \u0111\u1ecba ch\u1ec9 - hai kh\u00f3a ri\u00eang t\u01b0 kh\u00e1c nhau t\u1ea1o ra c\u00f9ng m\u1ed9t \u0111\u1ecba ch\u1ec9 Bitcoin. C\u00e2u h\u1ecfi n\u00e0y li\u00ean quan \u0111\u1ebfn l\u00fd thuy\u1ebft x\u00e1c su\u1ea5t v\u00e0 to\u00e1n h\u1ecdc c\u1ee7a c\u00e1c s\u1ed1 l\u1edbn.\n\nB\u0103m 160-bit RIPEMD-160 t\u1ea1o ra ch\u00ednh x\u00e1c 2\u00b9\u2076\u2070 \u0111\u1ecba ch\u1ec9 Bitcoin c\u00f3 th\u1ec3 c\u00f3 (1,461,501,637,330,902,918,203,684,832,716,283,019,655,932,542,976). \u0110\u1ec3 c\u00f3 c\u00e1i nh\u00ecn v\u1ec1 con s\u1ed1 thi\u00ean v\u0103n n\u00e0y\u2014th\u1ef1c t\u1ebf l\u00e0 1.46 \u00d7 10\u2074\u2078\u2014h\u00e3y xem x\u00e9t c\u00e1c so s\u00e1nh sau:\n<div class=\"table-container\">\n<table>\n<thead>\n<tr>\n<th>\u0110i\u1ec3m Tham chi\u1ebfu<\/th>\n<th>S\u1ed1 l\u01b0\u1ee3ng<\/th>\n<th>So s\u00e1nh v\u1edbi Kh\u00f4ng gian \u0110\u1ecba ch\u1ec9 Bitcoin<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Nguy\u00ean t\u1eed trong v\u0169 tr\u1ee5 quan s\u00e1t \u0111\u01b0\u1ee3c<\/td>\n<td>~10<sup>80<\/sup><\/td>\n<td>V\u1eabn nh\u1ecf h\u01a1n r\u1ea5t nhi\u1ec1u so v\u1edbi 2<sup>256<\/sup> (kh\u00f4ng gian kh\u00f3a ri\u00eang t\u01b0)<\/td>\n<\/tr>\n<tr>\n<td>H\u1ea1t c\u00e1t tr\u00ean Tr\u00e1i \u0110\u1ea5t<\/td>\n<td>~10<sup>20<\/sup><\/td>\n<td>Nh\u1ecf h\u01a1n nhi\u1ec1u so v\u1edbi 2<sup>160<\/sup> (kh\u00f4ng gian \u0111\u1ecba ch\u1ec9)<\/td>\n<\/tr>\n<tr>\n<td>Giao d\u1ecbch Bitcoin h\u00e0ng n\u0103m<\/td>\n<td>~10<sup>8<\/sup><\/td>\n<td>Ph\u1ea7n nh\u1ecf kh\u00f4ng \u0111\u00e1ng k\u1ec3 c\u1ee7a kh\u00f4ng gian \u0111\u1ecba ch\u1ec9<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\nKh\u1ea3 n\u0103ng va ch\u1ea1m c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n t\u00edch b\u1eb1ng nguy\u00ean l\u00fd ngh\u1ecbch l\u00fd sinh nh\u1eadt. Ngay c\u1ea3 v\u1edbi m\u1ed9t t\u1ef7 \u0111\u1ecba ch\u1ec9 Bitcoin \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng, kh\u1ea3 n\u0103ng x\u1ea3y ra va ch\u1ea1m v\u1eabn c\u1ef1c k\u1ef3 nh\u1ecf - kho\u1ea3ng 10<sup>-33<\/sup>, \u0111i\u1ec1u n\u00e0y th\u1ef1c t\u1ebf l\u00e0 kh\u00f4ng c\u00f3 \u0111\u1ed1i v\u1edbi c\u00e1c m\u1ee5c \u0111\u00edch th\u1ef1c t\u1ebf. T\u00ednh ch\u1ea5t to\u00e1n h\u1ecdc n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng khi b\u1ea1n t\u1ea1o m\u1ed9t \u0111\u1ecba ch\u1ec9 Bitcoin m\u1edbi tr\u00ean Pocket Option ho\u1eb7c b\u1ea5t k\u1ef3 n\u1ec1n t\u1ea3ng n\u00e0o kh\u00e1c, b\u1ea1n c\u00f3 th\u1ec3 g\u1ea7n nh\u01b0 ch\u1eafc ch\u1eafn r\u1eb1ng n\u00f3 l\u00e0 duy nh\u1ea5t trong h\u1ec7 sinh th\u00e1i to\u00e0n c\u1ea7u.\n<h2>Ph\u01b0\u01a1ng ph\u00e1p Ph\u00e2n t\u00edch \u0110\u1ecba ch\u1ec9 Bitcoin<\/h2>\n\u0110\u1ecba ch\u1ec9 Bitcoin t\u00edch h\u1ee3p c\u00e1c c\u01a1 ch\u1ebf x\u00e1c th\u1ef1c to\u00e1n h\u1ecdc tinh vi \u0111\u1ec3 ng\u0103n ch\u1eb7n l\u1ed7i ng\u1eabu nhi\u00ean. Hi\u1ec3u c\u00e1c c\u01a1 ch\u1ebf n\u00e0y cung c\u1ea5p c\u00e1i nh\u00ecn s\u00e2u s\u1eafc v\u1ec1 c\u00e1ch h\u1ec7 th\u1ed1ng duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n m\u00e0 kh\u00f4ng c\u1ea7n gi\u00e1m s\u00e1t trung t\u00e2m.\n<h3>To\u00e1n h\u1ecdc Checksum<\/h3>\n\u0110\u1ecba ch\u1ec9 Bitcoin bao g\u1ed3m m\u1ed9t m\u00e3 ki\u1ec3m tra l\u1ed7i t\u00edch h\u1ee3p g\u1ecdi l\u00e0 checksum, \u0111\u01b0\u1ee3c t\u1ea1o ra to\u00e1n h\u1ecdc t\u1eeb ch\u00ednh \u0111\u1ecba ch\u1ec9. Checksum 4 byte n\u00e0y \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1eb1ng c\u00e1ch:\n<ol>\n  <li>L\u1ea5y b\u0103m RIPEMD-160 v\u1edbi byte phi\u00ean b\u1ea3n<\/li>\n  <li>Th\u1ef1c hi\u1ec7n b\u0103m SHA-256 hai l\u1ea7n tr\u00ean gi\u00e1 tr\u1ecb n\u00e0y<\/li>\n  <li>L\u1ea5y 4 byte \u0111\u1ea7u ti\u00ean c\u1ee7a b\u0103m k\u1ebft qu\u1ea3<\/li>\n<\/ol>\nTrong qu\u00e1 tr\u00ecnh x\u00e1c th\u1ef1c \u0111\u1ecba ch\u1ec9, ph\u1ea7n m\u1ec1m t\u00ednh to\u00e1n l\u1ea1i checksum n\u00e0y v\u00e0 so s\u00e1nh v\u1edbi gi\u00e1 tr\u1ecb nh\u00fang. X\u00e1c th\u1ef1c to\u00e1n h\u1ecdc n\u00e0y ngay l\u1eadp t\u1ee9c x\u00e1c \u0111\u1ecbnh 99.9% l\u1ed7i \u0111\u00e1nh m\u00e1y tr\u01b0\u1edbc khi b\u1ea5t k\u1ef3 giao d\u1ecbch n\u00e0o x\u1ea3y ra, ng\u0103n ch\u1eb7n m\u1ea5t bitcoin ng\u1eabu nhi\u00ean. V\u00ed d\u1ee5, ch\u1ec9 c\u1ea7n thay \u0111\u1ed5i m\u1ed9t k\u00fd t\u1ef1 trong \u0111\u1ecba ch\u1ec9 Bitcoin c\u00f3 kh\u1ea3 n\u0103ng 99.9609% t\u1ea1o ra m\u1ed9t checksum kh\u00f4ng h\u1ee3p l\u1ec7.\n<div class=\"table-container\">\n<table>\n<thead>\n<tr>\n<th>Ki\u1ec3m tra X\u00e1c th\u1ef1c<\/th>\n<th>Thao t\u00e1c To\u00e1n h\u1ecdc<\/th>\n<th>Kh\u1ea3 n\u0103ng Ph\u00e1t hi\u1ec7n<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>X\u00e1c minh Checksum<\/td>\n<td>SHA-256 k\u00e9p v\u00e0 so s\u00e1nh<\/td>\n<td>Ph\u00e1t hi\u1ec7n ~99.9% l\u1ed7i ng\u1eabu nhi\u00ean<\/td>\n<\/tr>\n<tr>\n<td>X\u00e1c th\u1ef1c b\u1ed9 k\u00fd t\u1ef1<\/td>\n<td>Ki\u1ec3m tra b\u1ed9 k\u00fd t\u1ef1 Base58<\/td>\n<td>Lo\u1ea1i b\u1ecf c\u00e1c k\u00fd t\u1ef1 d\u1ec5 nh\u1ea7m l\u1eabn (0, O, l, I)<\/td>\n<\/tr>\n<tr>\n<td>X\u00e1c th\u1ef1c \u0111\u1ed9 d\u00e0i<\/td>\n<td>Ki\u1ec3m tra \u0111\u1ed9 d\u00e0i chu\u1ed7i<\/td>\n<td>\u0110\u1ea3m b\u1ea3o \u0111\u1ed9 d\u00e0i m\u00e3 h\u00f3a \u0111\u00fang<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n\u0110\u1ed1i v\u1edbi c\u00e1c \u0111\u1ecba ch\u1ec9 Bech32, to\u00e1n h\u1ecdc x\u00e1c th\u1ef1c tr\u1edf n\u00ean tinh vi h\u01a1n, s\u1eed d\u1ee5ng ph\u00e9p chia \u0111a th\u1ee9c tr\u00ean GF(2), cung c\u1ea5p kh\u1ea3 n\u0103ng ph\u00e1t hi\u1ec7n l\u1ed7i m\u1ea1nh h\u01a1n bao g\u1ed3m kh\u1ea3 n\u0103ng ph\u00e1t hi\u1ec7n b\u1ea5t k\u1ef3 l\u1ed7i \u0111\u01a1n n\u00e0o, t\u1ea5t c\u1ea3 c\u00e1c l\u1ed7i ho\u00e1n v\u1ecb li\u1ec1n k\u1ec1, v\u00e0 h\u1ea7u h\u1ebft c\u00e1c l\u1ed7i nhi\u1ec1u.\n<h2>Ph\u00e2n t\u00edch \u0110\u1ecbnh l\u01b0\u1ee3ng v\u1ec1 M\u1eabu S\u1eed d\u1ee5ng \u0110\u1ecba ch\u1ec9 Bitcoin<\/h2>\nKh\u00e1m ph\u00e1 vi\u1ec7c s\u1eed d\u1ee5ng \u0111\u1ecba ch\u1ec9 Bitcoin th\u00f4ng qua ph\u00e2n t\u00edch d\u1eef li\u1ec7u cung c\u1ea5p c\u00e1i nh\u00ecn s\u00e2u s\u1eafc v\u1ec1 h\u00e0nh vi m\u1ea1ng v\u00e0 th\u1ef1c h\u00e0nh b\u1ea3o m\u1eadt. Khi ph\u00e2n t\u00edch m\u1eabu s\u1eed d\u1ee5ng \u0111\u1ecba ch\u1ec9 Bitcoin, m\u1ed9t s\u1ed1 ch\u1ec9 s\u1ed1 n\u1ed5i b\u1eadt l\u00e0 \u0111\u1eb7c bi\u1ec7t th\u00f4ng tin.\n<div class=\"table-container\">\n<table>\n<thead>\n<tr>\n<th>Ch\u1ec9 s\u1ed1<\/th>\n<th>Ph\u01b0\u01a1ng ph\u00e1p T\u00ednh to\u00e1n<\/th>\n<th>Di\u1ec5n gi\u1ea3i<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>T\u1ef7 l\u1ec7 t\u00e1i s\u1eed d\u1ee5ng \u0111\u1ecba ch\u1ec9<\/td>\n<td>(Giao d\u1ecbch s\u1eed d\u1ee5ng \u0111\u1ecba ch\u1ec9 \u0111\u00e3 s\u1eed d\u1ee5ng tr\u01b0\u1edbc \u0111\u00f3) \u00f7 (T\u1ed5ng s\u1ed1 giao d\u1ecbch)<\/td>\n<td>Th\u1ea5p h\u01a1n l\u00e0 t\u1ed1t h\u01a1n cho quy\u1ec1n ri\u00eang t\u01b0, th\u01b0\u1eddng &lt;15% tr\u00ean c\u00e1c n\u1ec1n t\u1ea3ng hi\u1ec7n \u0111\u1ea1i<\/td>\n<\/tr>\n<tr>\n<td>Ph\u00e2n ph\u1ed1i s\u1ed1 d\u01b0 \u0111\u1ecba ch\u1ec9<\/td>\n<td>Ph\u00e2n t\u00edch ph\u00e2n ph\u1ed1i th\u1ed1ng k\u00ea c\u1ee7a gi\u00e1 tr\u1ecb UTXO<\/td>\n<td>Ch\u1ec9 ra s\u1ef1 t\u1eadp trung c\u1ee7a c\u1ea3i<\/td>\n<\/tr>\n<tr>\n<td>Th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng n\u1eeda \u0111\u1eddi c\u1ee7a \u0111\u1ecba ch\u1ec9<\/td>\n<td>Th\u1eddi gian \u0111\u1ec3 50% \u0111\u1ecba ch\u1ec9 tr\u1edf n\u00ean kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng<\/td>\n<td>\u0110o l\u01b0\u1eddng s\u1ef1 gi\u1eef ch\u00e2n ng\u01b0\u1eddi d\u00f9ng<\/td>\n<\/tr>\n<tr>\n<td>T\u1ef7 l\u1ec7 ch\u1ea5p nh\u1eadn \u0111\u1ecbnh d\u1ea1ng<\/td>\n<td>(\u0110\u1ecba ch\u1ec9 m\u1edbi c\u1ee7a \u0111\u1ecbnh d\u1ea1ng X) \u00f7 (T\u1ea5t c\u1ea3 \u0111\u1ecba ch\u1ec9 m\u1edbi), \u0111o l\u01b0\u1eddng trung b\u00ecnh \u0111\u1ed9ng 7 ng\u00e0y<\/td>\n<td>Ch\u1ec9 ra s\u1ef1 ch\u1ea5p nh\u1eadn c\u00f4ng ngh\u1ec7<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\nC\u00e1c n\u1ec1n t\u1ea3ng giao d\u1ecbch nh\u01b0 Pocket Option tri\u1ec3n khai c\u00e1c h\u1ec7 th\u1ed1ng tinh vi \u0111\u1ec3 gi\u00e1m s\u00e1t c\u00e1c ch\u1ec9 s\u1ed1 n\u00e0y v\u00e0 \u0111\u1ea3m b\u1ea3o th\u1ef1c h\u00e0nh b\u1ea3o m\u1eadt t\u1ed1i \u01b0u khi x\u1eed l\u00fd ti\u1ec1n g\u1eedi v\u00e0 r\u00fat ti\u1ec1n c\u1ee7a kh\u00e1ch h\u00e0ng. B\u1eb1ng c\u00e1ch ph\u00e2n t\u00edch c\u00e1c m\u1eabu n\u00e0y, c\u1ea3 ng\u01b0\u1eddi d\u00f9ng v\u00e0 nh\u00e0 \u0111i\u1ec1u h\u00e0nh n\u1ec1n t\u1ea3ng c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng ng\u1edd v\u00e0 c\u1ea3i thi\u1ec7n c\u00e1c giao th\u1ee9c b\u1ea3o m\u1eadt.\n<ul>\n  <li>C\u00e1c k\u1ef9 thu\u1eadt ph\u00e2n c\u1ee5m \u0111\u1ecba ch\u1ec9 s\u1eed d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p to\u00e1n h\u1ecdc \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c \u0111\u1ecba ch\u1ec9 c\u00f3 kh\u1ea3 n\u0103ng \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t b\u1edfi c\u00f9ng m\u1ed9t th\u1ef1c th\u1ec3<\/li>\n  <li>Ph\u00e2n t\u00edch th\u1eddi gian ki\u1ec3m tra c\u00e1c m\u1eabu th\u1eddi gian c\u1ee7a vi\u1ec7c t\u1ea1o v\u00e0 s\u1eed d\u1ee5ng \u0111\u1ecba ch\u1ec9<\/li>\n  <li>L\u00fd thuy\u1ebft \u0111\u1ed3 th\u1ecb m\u1ea1ng \u00e1p d\u1ee5ng c\u00e1c m\u00f4 h\u00ecnh to\u00e1n h\u1ecdc \u0111\u1ec3 tr\u1ef1c quan h\u00f3a v\u00e0 ph\u00e2n t\u00edch m\u1ed1i quan h\u1ec7 \u0111\u1ecba ch\u1ec9<\/li>\n<\/ul>\n<h2>Th\u1ef1c hi\u1ec7n Ph\u00e2n t\u00edch \u0110\u1ecba ch\u1ec9 Bitcoin cho Nh\u00e0 giao d\u1ecbch<\/h2>\n\u0110\u1ed1i v\u1edbi c\u00e1c nh\u00e0 giao d\u1ecbch s\u1eed d\u1ee5ng c\u00e1c n\u1ec1n t\u1ea3ng nh\u01b0 Pocket Option, hi\u1ec3u bi\u1ebft v\u1ec1 ph\u00e2n t\u00edch \u0111\u1ecba ch\u1ec9 Bitcoin c\u00f3 th\u1ec3 cung c\u1ea5p nh\u1eefng c\u00e1i nh\u00ecn c\u00f3 gi\u00e1 tr\u1ecb cho c\u00e1c quy\u1ebft \u0111\u1ecbnh \u0111\u1ea7u t\u01b0. C\u00e1c k\u1ef9 thu\u1eadt to\u00e1n h\u1ecdc n\u00e0y cho ph\u00e9p c\u00e1c chi\u1ebfn l\u01b0\u1ee3c giao d\u1ecbch th\u00f4ng minh h\u01a1n.\n<div class=\"table-container\">\n<table>\n<thead>\n<tr>\n<th>K\u1ef9 thu\u1eadt Ph\u00e2n t\u00edch<\/th>\n<th>Ph\u01b0\u01a1ng ph\u00e1p To\u00e1n h\u1ecdc<\/th>\n<th>\u1ee8ng d\u1ee5ng Giao d\u1ecbch<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Gi\u00e1m s\u00e1t \u0111\u1ecba ch\u1ec9 c\u00e1 voi<\/td>\n<td>Ph\u00e1t hi\u1ec7n ngo\u1ea1i l\u1ec7 th\u1ed1ng k\u00ea<\/td>\n<td>D\u1ef1 \u0111o\u00e1n c\u00e1c chuy\u1ec3n \u0111\u1ed9ng th\u1ecb tr\u01b0\u1eddng l\u1edbn<\/td>\n<\/tr>\n<tr>\n<td>D\u00f2ng v\u00e0o\/ra c\u1ee7a s\u00e0n giao d\u1ecbch<\/td>\n<td>Ph\u00e2n t\u00edch chu\u1ed7i th\u1eddi gian c\u1ee7a c\u00e1c \u0111\u1ecba ch\u1ec9 \u0111\u01b0\u1ee3c g\u1eafn th\u1ebb s\u00e0n giao d\u1ecbch<\/td>\n<td>\u0110\u00e1nh gi\u00e1 t\u00e2m l\u00fd th\u1ecb tr\u01b0\u1eddng<\/td>\n<\/tr>\n<tr>\n<td>S\u00f3ng HODL<\/td>\n<td>Ph\u00e2n t\u00edch nh\u00f3m tu\u1ed5i c\u1ee7a UTXO<\/td>\n<td>X\u00e1c \u0111\u1ecbnh c\u00e1c giai \u0111o\u1ea1n t\u00edch l\u0169y\/ph\u00e2n ph\u1ed1i<\/td>\n<\/tr>\n<tr>\n<td>Ch\u1ec9 s\u1ed1 gi\u00e1 tr\u1ecb th\u1ef1c hi\u1ec7n<\/td>\n<td>T\u00ednh to\u00e1n c\u00f3 tr\u1ecdng s\u1ed1 d\u1ef1a tr\u00ean gi\u00e1 tr\u1ecb v\u00e0 tu\u1ed5i c\u1ee7a UTXO<\/td>\n<td>X\u00e1c \u0111\u1ecbnh c\u00e1c \u0111\u00e1y\/\u0111\u1ec9nh th\u1ecb tr\u01b0\u1eddng ti\u1ec1m n\u0103ng<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n\u0110\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e2n t\u00edch n\u00e0y, c\u00e1c nh\u00e0 giao d\u1ecbch c\u00f3 th\u1ec3 l\u00e0m theo c\u00e1c b\u01b0\u1edbc sau:\n<ul>\n  <li>Tr\u00edch xu\u1ea5t d\u1eef li\u1ec7u l\u1ecbch s\u1eed t\u1eeb c\u00e1c tr\u00ecnh kh\u00e1m ph\u00e1 blockchain\u2014theo d\u00f5i c\u00e1c \u0111\u1ecba ch\u1ec9 c\u00f3 s\u1ed1 d\u01b0 &gt;100 BTC \u0111\u1ec3 c\u00f3 t\u00edn hi\u1ec7u t\u1ed1i \u01b0u<\/li>\n  <li>\u00c1p d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p th\u1ed1ng k\u00ea \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c sai l\u1ec7ch \u0111\u00e1ng k\u1ec3 so v\u1edbi c\u00e1c m\u1eabu b\u00ecnh th\u01b0\u1eddng<\/li>\n  <li>T\u00ednh to\u00e1n h\u1ec7 s\u1ed1 t\u01b0\u01a1ng quan gi\u1eefa c\u00e1c ch\u1ec9 s\u1ed1 \u0111\u1ecba ch\u1ec9 v\u00e0 bi\u1ebfn \u0111\u1ed9ng gi\u00e1<\/li>\n  <li>Ph\u00e1t tri\u1ec3n c\u00e1c m\u00f4 h\u00ecnh d\u1ef1 \u0111o\u00e1n k\u1ebft h\u1ee3p c\u00e1c ch\u1ec9 s\u1ed1 n\u00e0y nh\u01b0 c\u00e1c ch\u1ec9 b\u00e1o d\u1eabn \u0111\u1ea7u<\/li>\n<\/ul>\nPocket Option cung c\u1ea5p c\u00e1c c\u00f4ng c\u1ee5 t\u00edch h\u1ee3p m\u1ed9t s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch n\u00e0y, gi\u00fap c\u00e1c nh\u00e0 giao d\u1ecbch \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh th\u00f4ng minh h\u01a1n d\u1ef1a tr\u00ean d\u1eef li\u1ec7u blockchain thay v\u00ec ch\u1ec9 d\u1ef1a v\u00e0o bi\u1ec3u \u0111\u1ed3 gi\u00e1. C\u00e1ch ti\u1ebfp c\u1eadn to\u00e1n h\u1ecdc n\u00e0y \u0111\u1ed1i v\u1edbi giao d\u1ecbch \u0111\u1ea1i di\u1ec7n cho m\u1ed9t chi\u1ebfn l\u01b0\u1ee3c tinh vi h\u01a1n so v\u1edbi ph\u00e2n t\u00edch k\u1ef9 thu\u1eadt truy\u1ec1n th\u1ed1ng.\n<h2>C\u00e1c Kh\u00e1i ni\u1ec7m To\u00e1n h\u1ecdc N\u00e2ng cao trong B\u1ea3o m\u1eadt \u0110\u1ecba ch\u1ec9 Bitcoin<\/h2>\nNgo\u00e0i c\u00e1c ch\u1ee9c n\u0103ng m\u1eadt m\u00e3 c\u01a1 b\u1ea3n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ea1o \u0111\u1ecba ch\u1ec9 Bitcoin, m\u1ed9t s\u1ed1 kh\u00e1i ni\u1ec7m to\u00e1n h\u1ecdc n\u00e2ng cao \u0111\u00f3ng g\u00f3p v\u00e0o b\u1ea3o m\u1eadt v\u00e0 ch\u1ee9c n\u0103ng c\u1ee7a ch\u00fang. Hi\u1ec3u c\u00e1c kh\u00e1i ni\u1ec7m n\u00e0y cung c\u1ea5p c\u00e1i nh\u00ecn s\u00e2u s\u1eafc h\u01a1n v\u1ec1 \u0111\u1ecba ch\u1ec9 Bitcoin \u1edf m\u1ee9c c\u01a1 b\u1ea3n nh\u1ea5t.\n<h3>Entropy v\u00e0 T\u1ea1o S\u1ed1 Ng\u1eabu nhi\u00ean<\/h3>\nB\u1ea3o m\u1eadt c\u1ee7a m\u1ed9t \u0111\u1ecba ch\u1ec9 Bitcoin b\u1eaft \u0111\u1ea7u v\u1edbi entropy (t\u00ednh ng\u1eabu nhi\u00ean) c\u1ee7a vi\u1ec7c t\u1ea1o kh\u00f3a ri\u00eang t\u01b0. Entropy kh\u00f4ng \u0111\u1ee7 c\u00f3 th\u1ec3 t\u1ea1o ra c\u00e1c kh\u00f3a c\u00f3 th\u1ec3 d\u1ef1 \u0111o\u00e1n, l\u00e0m cho c\u00e1c \u0111\u1ecba ch\u1ec9 d\u1ec5 b\u1ecb t\u1ea5n c\u00f4ng brute force. \u0110o l\u01b0\u1eddng to\u00e1n h\u1ecdc c\u1ee7a entropy b\u1eb1ng bit x\u00e1c \u0111\u1ecbnh b\u1ea3o m\u1eadt th\u1ef1c t\u1ebf c\u1ee7a h\u1ec7 th\u1ed1ng. \u0110\u1ec3 c\u00f3 c\u00e1i nh\u00ecn, m\u1ed9t kh\u00f3a ri\u00eang t\u01b0 ch\u1ec9 c\u00f3 70 bit entropy (thay v\u00ec \u0111\u1ea7y \u0111\u1ee7 256 bit) c\u00f3 th\u1ec3 b\u1ecb brute force trong kho\u1ea3ng 36 ng\u00e0y s\u1eed d\u1ee5ng ph\u1ea7n c\u1ee9ng chuy\u00ean d\u1ee5ng\u2014nh\u1ea5n m\u1ea1nh t\u1ea1i sao vi\u1ec7c t\u1ea1o s\u1ed1 ng\u1eabu nhi\u00ean \u0111\u00fang l\u00e0 r\u1ea5t quan tr\u1ecdng khi t\u1ea1o \u0111\u1ecba ch\u1ec9 Bitcoin.\n<div class=\"table-container\">\n<table>\n<thead>\n<tr>\n<th>Ngu\u1ed3n Entropy<\/th>\n<th>Bit c\u1ee7a Entropy<\/th>\n<th>B\u1ea3o m\u1eadt T\u01b0\u01a1ng \u0111\u1ed1i<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>B\u1ed9 t\u1ea1o s\u1ed1 ng\u1eabu nhi\u00ean gi\u1ea3<\/td>\n<td>Thay \u0111\u1ed5i (c\u00f3 th\u1ec3 th\u1ea5p)<\/td>\n<td>C\u00f3 th\u1ec3 d\u1ec5 b\u1ecb t\u1ea5n c\u00f4ng<\/td>\n<\/tr>\n<tr>\n<td>B\u1ed9 t\u1ea1o s\u1ed1 ng\u1eabu nhi\u00ean ph\u1ea7n c\u1ee9ng<\/td>\n<td>~256 bit<\/td>\n<td>B\u1ea3o m\u1eadt cao<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ea7u v\u00e0o \"ng\u1eabu nhi\u00ean\" do con ng\u01b0\u1eddi t\u1ea1o ra<\/td>\n<td>~28 bit<\/td>\n<td>R\u1ea5t d\u1ec5 b\u1ecb t\u1ea5n c\u00f4ng<\/td>\n<\/tr>\n<tr>\n<td>Quay x\u00fac x\u1eafc (100 l\u1ea7n)<\/td>\n<td>~166 bit<\/td>\n<td>B\u1ea3o m\u1eadt t\u1ed1t<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\nKhi ng\u01b0\u1eddi d\u00f9ng t\u1ea1o v\u00ed tr\u00ean c\u00e1c n\u1ec1n t\u1ea3ng nh\u01b0 Pocket Option, n\u1ec1n t\u1ea3ng th\u01b0\u1eddng s\u1eed d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p t\u1ea1o s\u1ed1 ng\u1eabu nhi\u00ean an to\u00e0n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o entropy t\u1ed1i \u0111a trong vi\u1ec7c t\u1ea1o \u0111\u1ecba ch\u1ec9. N\u1ec1n t\u1ea3ng to\u00e1n h\u1ecdc n\u00e0y cung c\u1ea5p s\u1ef1 t\u1ef1 tin r\u1eb1ng c\u00e1c \u0111\u1ecba ch\u1ec9 s\u1ebd ch\u1ed1ng l\u1ea1i c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng ph\u00e2n t\u00edch m\u1eadt m\u00e3.\n<h3>B\u1eb1ng ch\u1ee9ng Kh\u00f4ng Ki\u1ebfn th\u1ee9c v\u00e0 X\u00e1c minh \u0110\u1ecba ch\u1ec9 Bitcoin<\/h3>\nB\u1eb1ng ch\u1ee9ng kh\u00f4ng ki\u1ebfn th\u1ee9c \u0111\u1ea1i di\u1ec7n cho m\u1ed9t kh\u00e1i ni\u1ec7m to\u00e1n h\u1ecdc ti\u00ean ti\u1ebfn cho ph\u00e9p m\u1ed9t b\u00ean ch\u1ee9ng minh cho b\u00ean kh\u00e1c r\u1eb1ng m\u1ed9t tuy\u00ean b\u1ed1 l\u00e0 \u0111\u00fang m\u00e0 kh\u00f4ng ti\u1ebft l\u1ed9 b\u1ea5t k\u1ef3 th\u00f4ng tin b\u1ed5 sung n\u00e0o. Trong b\u1ed1i c\u1ea3nh \u0111\u1ecba ch\u1ec9 Bitcoin, \u0111i\u1ec1u n\u00e0y cho ph\u00e9p:\n<ul>\n  <li>Ch\u1ee9ng minh quy\u1ec1n s\u1edf h\u1eefu m\u1ed9t \u0111\u1ecba ch\u1ec9 m\u00e0 kh\u00f4ng ti\u1ebft l\u1ed9 kh\u00f3a ri\u00eang t\u01b0<\/li>\n  <li>X\u00e1c minh t\u00ednh h\u1ee3p l\u1ec7 c\u1ee7a m\u1ed9t giao d\u1ecbch m\u00e0 kh\u00f4ng ti\u1ebft l\u1ed9 chi ti\u1ebft giao d\u1ecbch<\/li>\n  <li>X\u00e1c nh\u1eadn s\u1ed1 d\u01b0 \u0111\u1ecba ch\u1ec9 m\u00e0 kh\u00f4ng ti\u1ebft l\u1ed9 s\u1ed1 ti\u1ec1n ch\u00ednh x\u00e1c<\/li>\n<\/ul>\nC\u00e1c c\u1ea5u tr\u00fac to\u00e1n h\u1ecdc n\u00e0y ng\u00e0y c\u00e0ng tr\u1edf n\u00ean quan tr\u1ecdng trong c\u00e1c \u1ee9ng d\u1ee5ng ti\u1ec1n \u0111i\u1ec7n t\u1eed t\u0103ng c\u01b0\u1eddng quy\u1ec1n ri\u00eang t\u01b0, v\u00e0 c\u00e1c nguy\u00ean t\u1eafc c\u1ee7a ch\u00fang m\u1edf r\u1ed9ng \u0111\u1ebfn nhi\u1ec1u kh\u00eda c\u1ea1nh c\u1ee7a giao d\u1ecbch v\u00e0 \u0111\u1ea7u t\u01b0 ti\u1ec1n \u0111i\u1ec7n t\u1eed tr\u00ean c\u00e1c n\u1ec1n t\u1ea3ng nh\u01b0 Pocket Option, \u0111\u1eb7c bi\u1ec7t khi x\u00e1c minh quy\u1ec1n s\u1edf h\u1eefu trong qu\u00e1 tr\u00ecnh r\u00fat ti\u1ec1n.\n\n[cta_button text=\"B\u1eaft \u0111\u1ea7u Giao d\u1ecbch\"]\n<h2>K\u1ebft lu\u1eadn: S\u1ef1 Thanh l\u1ecbch To\u00e1n h\u1ecdc c\u1ee7a \u0110\u1ecba ch\u1ec9 Bitcoin<\/h2>\nKh\u00e1m ph\u00e1 \u0111\u1ecba ch\u1ec9 bitcoin qua l\u0103ng k\u00ednh to\u00e1n h\u1ecdc ti\u1ebft l\u1ed9 c\u00e1ch m\u1eadt m\u00e3 \u0111\u01b0\u1eddng cong elliptic, c\u00e1c h\u00e0m b\u0103m ch\u00ednh x\u00e1c, v\u00e0 c\u00e1c thu\u1eadt to\u00e1n m\u00e3 h\u00f3a k\u1ebft h\u1ee3p \u0111\u1ec3 t\u1ea1o ra m\u1ed9t h\u1ec7 th\u1ed1ng b\u1ea3o v\u1ec7 h\u01a1n 44 tri\u1ec7u \u0111\u1ecba ch\u1ec9 c\u00f3 gi\u00e1 tr\u1ecb th\u1ef1c. Ki\u1ebfn tr\u00fac m\u1eadt m\u00e3 thanh l\u1ecbch n\u00e0y\u2014\u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng tr\u00ean c\u00e1c nguy\u00ean t\u1eafc t\u1eeb l\u00fd thuy\u1ebft s\u1ed1 ti\u00ean ti\u1ebfn v\u00e0 \u0111\u1ea1i s\u1ed1 tr\u1eebu t\u01b0\u1ee3ng\u2014gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 tr\u01b0\u1edbc \u0111\u00e2y kh\u00f4ng th\u1ec3 gi\u1ea3i quy\u1ebft v\u1ec1 quy\u1ec1n s\u1edf h\u1eefu k\u1ef9 thu\u1eadt s\u1ed1 kh\u00f4ng c\u1ea7n tin c\u1eady tr\u00ean quy m\u00f4 to\u00e0n c\u1ea7u.\n\n\u0110\u1ed1i v\u1edbi c\u00e1c nh\u00e0 giao d\u1ecbch v\u00e0 nh\u00e0 \u0111\u1ea7u t\u01b0 s\u1eed d\u1ee5ng c\u00e1c n\u1ec1n t\u1ea3ng nh\u01b0 Pocket Option, ki\u1ebfn th\u1ee9c n\u00e0y cung c\u1ea5p s\u1ef1 \u0111\u00e1nh gi\u00e1 s\u00e2u s\u1eafc h\u01a1n v\u1ec1 c\u00f4ng ngh\u1ec7 h\u1ed7 tr\u1ee3 c\u00e1c giao d\u1ecbch c\u1ee7a h\u1ecd. C\u00e1c nguy\u00ean t\u1eafc to\u00e1n h\u1ecdc b\u1ea3o v\u1ec7 \u0111\u1ecba ch\u1ec9 Bitcoin \u0111\u1ea3m b\u1ea3o r\u1eb1ng ng\u01b0\u1eddi d\u00f9ng duy tr\u00ec quy\u1ec1n ki\u1ec3m so\u00e1t tuy\u1ec7t \u0111\u1ed1i \u0111\u1ed1i v\u1edbi qu\u1ef9 c\u1ee7a h\u1ecd th\u00f4ng qua b\u1eb1ng ch\u1ee9ng m\u1eadt m\u00e3 thay v\u00ec tin t\u01b0\u1edfng v\u00e0o c\u00e1c b\u00ean th\u1ee9 ba.\n\nKhi c\u00f4ng ngh\u1ec7 blockchain ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n, c\u00e1c n\u1ec1n t\u1ea3ng to\u00e1n h\u1ecdc c\u1ee7a \u0111\u1ecba ch\u1ec9 Bitcoin v\u1eabn l\u00e0 m\u1ed9t minh ch\u1ee9ng cho c\u00e1ch to\u00e1n h\u1ecdc thu\u1ea7n t\u00fay c\u00f3 th\u1ec3 t\u1ea1o ra c\u00e1c h\u1ec7 th\u1ed1ng th\u1ef1c t\u1ebf, an to\u00e0n ho\u1ea1t \u0111\u1ed9ng tr\u00ean c\u00e1c m\u1ea1ng to\u00e0n c\u1ea7u m\u00e0 kh\u00f4ng c\u1ea7n ki\u1ec3m so\u00e1t trung t\u00e2m. L\u1ea7n t\u1edbi khi b\u1ea1n g\u1eedi ho\u1eb7c nh\u1eadn Bitcoin qua t\u00e0i kho\u1ea3n Pocket Option c\u1ee7a m\u00ecnh, b\u1ea1n s\u1ebd c\u00f3 c\u00e1i nh\u00ecn s\u00e2u s\u1eafc h\u01a1n v\u1ec1 to\u00e1n h\u1ecdc tinh vi \u0111ang ho\u1ea1t \u0111\u1ed9ng ph\u00eda sau \u0111\u1ec3 b\u1ea3o v\u1ec7 giao d\u1ecbch c\u1ee7a b\u1ea1n.\n\n<\/div>","body_html_source":{"label":"Body HTML","type":"wysiwyg","formatted_value":"<div class=\"custom-html-container\">\n<h2>N\u1ec1n t\u1ea3ng M\u1eadt m\u00e3 c\u1ee7a \u0110\u1ecba ch\u1ec9 Bitcoin<\/h2>\n<p>M\u1ed9t \u0111\u1ecba ch\u1ec9 Bitcoin ho\u1ea1t \u0111\u1ed9ng nh\u01b0 giao di\u1ec7n ch\u00ednh gi\u1eefa ng\u01b0\u1eddi d\u00f9ng v\u00e0 ki\u1ebfn tr\u00fac to\u00e1n h\u1ecdc ph\u1ee9c t\u1ea1p c\u1ee7a m\u1ea1ng Bitcoin. V\u1ec1 c\u1ed1t l\u00f5i, \u0111\u1ecba ch\u1ec9 Bitcoin l\u00e0 g\u00ec? N\u00f3i \u0111\u01a1n gi\u1ea3n, \u0111\u00f3 l\u00e0 m\u1ed9t \u0111\u1ecbnh danh \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1eb1ng m\u1eadt m\u00e3 (th\u01b0\u1eddng t\u1eeb 26-35 k\u00fd t\u1ef1) cho ph\u00e9p nh\u1eadn Bitcoin. Kh\u00f4ng gi\u1ed1ng nh\u01b0 s\u1ed1 t\u00e0i kho\u1ea3n ng\u00e2n h\u00e0ng do c\u00e1c t\u1ed5 ch\u1ee9c t\u1eadp trung ph\u00e1t h\u00e0nh, \u0111\u1ecba ch\u1ec9 Bitcoin xu\u1ea5t ph\u00e1t t\u1eeb to\u00e1n h\u1ecdc thu\u1ea7n t\u00fay\u2014cho ph\u00e9p b\u1ea5t k\u1ef3 ai t\u1ea1o ra s\u1ed1 l\u01b0\u1ee3ng \u0111\u1ecba ch\u1ec9 kh\u00f4ng gi\u1edbi h\u1ea1n ngay l\u1eadp t\u1ee9c m\u00e0 kh\u00f4ng c\u1ea7n s\u1ef1 cho ph\u00e9p ho\u1eb7c \u0111\u0103ng k\u00fd.<\/p>\n<p>Qu\u00e1 tr\u00ecnh t\u1ea1o \u0111\u1ecba ch\u1ec9 Bitcoin b\u1eaft \u0111\u1ea7u v\u1edbi Thu\u1eadt to\u00e1n Ch\u1eef k\u00fd S\u1ed1 \u0110\u01b0\u1eddng cong Elliptic (ECDSA) t\u1ea1o ra m\u1ed9t c\u1eb7p kh\u00f3a m\u1eadt m\u00e3. Kh\u00f3a ri\u00eang t\u01b0 (m\u1ed9t s\u1ed1 ng\u1eabu nhi\u00ean 256-bit) tr\u1ea3i qua ph\u00e9p nh\u00e2n \u0111\u01b0\u1eddng cong elliptic \u0111\u1ec3 t\u1ea1o ra kh\u00f3a c\u00f4ng khai\u2014m\u1ed9t qu\u00e1 tr\u00ecnh ch\u1ec9 m\u1ea5t v\u00e0i micro gi\u00e2y theo m\u1ed9t h\u01b0\u1edbng nh\u01b0ng c\u1ea7n h\u00e0ng t\u1ef7 n\u0103m \u0111\u1ec3 \u0111\u1ea3o ng\u01b0\u1ee3c b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c si\u00eau m\u00e1y t\u00ednh m\u1ea1nh nh\u1ea5t hi\u1ec7n nay. S\u1ef1 b\u1ea5t \u0111\u1ed1i x\u1ee9ng to\u00e1n h\u1ecdc n\u00e0y t\u1ea1o ra n\u1ec1n t\u1ea3ng b\u1ea3o m\u1eadt b\u1ea3o v\u1ec7 h\u01a1n 800 t\u1ef7 \u0111\u00f4 la t\u00e0i s\u1ea3n tr\u00ean m\u1ea1ng Bitcoin.<\/p>\n<div class=\"table-container\">\n<table>\n<thead>\n<tr>\n<th>Th\u00e0nh ph\u1ea7n<\/th>\n<th>Ch\u1ee9c n\u0103ng To\u00e1n h\u1ecdc<\/th>\n<th>M\u1ee5c \u0111\u00edch<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Kh\u00f3a ri\u00eang t\u01b0<\/td>\n<td>S\u1ed1 nguy\u00ean ng\u1eabu nhi\u00ean 256-bit<\/td>\n<td>Gi\u00e1 tr\u1ecb b\u00ed m\u1eadt d\u00f9ng \u0111\u1ec3 k\u00fd giao d\u1ecbch<\/td>\n<\/tr>\n<tr>\n<td>Kh\u00f3a c\u00f4ng khai<\/td>\n<td>K = k \u00d7 G (trong \u0111\u00f3 k l\u00e0 kh\u00f3a ri\u00eang t\u01b0, G l\u00e0 \u0111i\u1ec3m sinh)<\/td>\n<td>\u0110\u01b0\u1ee3c t\u1ea1o ra t\u1eeb kh\u00f3a ri\u00eang t\u01b0 b\u1eb1ng ECDSA<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ecba ch\u1ec9 Bitcoin<\/td>\n<td>RIPEMD160(SHA256(Kh\u00f3a c\u00f4ng khai))<\/td>\n<td>\u0110\u1ecbnh danh c\u00f4ng khai \u0111\u1ec3 nh\u1eadn ti\u1ec1n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2>Qu\u00e1 tr\u00ecnh Bi\u1ebfn \u0111\u1ed5i To\u00e1n h\u1ecdc<\/h2>\n<p>H\u00e0nh tr\u00ecnh t\u1eeb kh\u00f3a ri\u00eang t\u01b0 \u0111\u1ebfn \u0111\u1ecba ch\u1ec9 Bitcoin bao g\u1ed3m nhi\u1ec1u bi\u1ebfn \u0111\u1ed5i m\u1eadt m\u00e3, m\u1ed7i bi\u1ebfn \u0111\u1ed5i th\u00eam c\u00e1c l\u1edbp b\u1ea3o m\u1eadt v\u00e0 ch\u1ee9c n\u0103ng. Hi\u1ec3u c\u00e1c ph\u00e9p to\u00e1n n\u00e0y cung c\u1ea5p c\u00e1i nh\u00ecn s\u00e2u s\u1eafc v\u1ec1 c\u00e1ch Bitcoin c\u00e2n b\u1eb1ng gi\u1eefa b\u1ea3o m\u1eadt t\u00ednh to\u00e1n v\u00e0 kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng th\u1ef1c t\u1ebf.<\/p>\n<h3>T\u1eeb Kh\u00f3a Ri\u00eang t\u01b0 \u0111\u1ebfn Kh\u00f3a C\u00f4ng khai: To\u00e1n h\u1ecdc \u0110\u01b0\u1eddng cong Elliptic<\/h3>\n<p>Bitcoin th\u1ef1c hi\u1ec7n \u0111\u01b0\u1eddng cong elliptic secp256k1\u2014\u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n to\u00e1n h\u1ecdc l\u00e0 y\u00b2 = x\u00b3 + 7 tr\u00ean m\u1ed9t tr\u01b0\u1eddng h\u1eefu h\u1ea1n c\u00f3 b\u1eadc 2^256 &#8211; 2^32 &#8211; 977. Trong qu\u00e1 tr\u00ecnh t\u1ea1o kh\u00f3a c\u00f4ng khai, kh\u00f3a ri\u00eang t\u01b0 c\u1ee7a b\u1ea1n (m\u1ed9t s\u1ed1 nguy\u00ean 256-bit gi\u1eefa 1 v\u00e0 115792089237316195423570985008687907852837564279074904382605163141518161494337) nh\u00e2n v\u1edbi m\u1ed9t \u0111i\u1ec3m sinh c\u1ed1 \u0111\u1ecbnh G tr\u00ean \u0111\u01b0\u1eddng cong n\u00e0y. Ph\u00e9p to\u00e1n ch\u00ednh x\u00e1c n\u00e0y t\u1ea1o ra m\u1ed9t \u0111i\u1ec3m \u0111\u01b0\u1eddng cong duy nh\u1ea5t kh\u00e1c\u2014kh\u00f3a c\u00f4ng khai c\u1ee7a b\u1ea1n\u2014theo c\u00f4ng th\u1ee9c:<\/p>\n<p>Kh\u00f3a C\u00f4ng khai = Kh\u00f3a Ri\u00eang t\u01b0 \u00d7 \u0110i\u1ec3m Sinh<\/p>\n<p>Ph\u00e9p nh\u00e2n n\u00e0y t\u1eadn d\u1ee5ng thu\u1ed9c t\u00ednh &#8220;c\u1eeda b\u1eaby&#8221; c\u1ee7a \u0111\u01b0\u1eddng cong elliptic, n\u01a1i t\u00ednh to\u00e1n ti\u1ebfn l\u00e0 \u0111\u01a1n gi\u1ea3n nh\u01b0ng ng\u01b0\u1ee3c l\u1ea1i (t\u00ecm kh\u00f3a ri\u00eang t\u01b0 t\u1eeb kh\u00f3a c\u00f4ng khai) s\u1ebd y\u00eau c\u1ea7u gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 logarit r\u1eddi r\u1ea1c &#8211; m\u1ed9t nhi\u1ec7m v\u1ee5 \u0111\u01b0\u1ee3c coi l\u00e0 kh\u00f4ng th\u1ec3 th\u1ef1c hi\u1ec7n \u0111\u01b0\u1ee3c v\u1edbi c\u00f4ng ngh\u1ec7 hi\u1ec7n t\u1ea1i, c\u1ea7n h\u00e0ng t\u1ef7 n\u0103m ngay c\u1ea3 v\u1edbi si\u00eau m\u00e1y t\u00ednh.<\/p>\n<div class=\"table-container\">\n<table>\n<thead>\n<tr>\n<th>B\u01b0\u1edbc Thao t\u00e1c<\/th>\n<th>C\u00f4ng th\u1ee9c To\u00e1n h\u1ecdc<\/th>\n<th>\u0110\u1ed9 d\u00e0i Bit<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>T\u1ea1o Kh\u00f3a Ri\u00eang t\u01b0<\/td>\n<td>L\u1ef1a ch\u1ecdn ng\u1eabu nhi\u00ean t\u1eeb ph\u1ea1m vi [1, n-1]<\/td>\n<td>256 bit<\/td>\n<\/tr>\n<tr>\n<td>T\u00ednh To\u00e1n Kh\u00f3a C\u00f4ng khai<\/td>\n<td>K = k \u00d7 G (ph\u00e9p nh\u00e2n \u0111i\u1ec3m)<\/td>\n<td>512 bit (kh\u00f4ng n\u00e9n)<\/td>\n<\/tr>\n<tr>\n<td>N\u00e9n Kh\u00f3a C\u00f4ng khai<\/td>\n<td>K<sub>n\u00e9n<\/sub> = t\u1ecda \u0111\u1ed9 x + ti\u1ec1n t\u1ed1<\/td>\n<td>257 bit (n\u00e9n)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>N\u1ec1n t\u1ea3ng to\u00e1n h\u1ecdc n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng ng\u01b0\u1eddi d\u00f9ng tr\u00ean c\u00e1c n\u1ec1n t\u1ea3ng nh\u01b0 Pocket Option c\u00f3 th\u1ec3 giao d\u1ecbch v\u1edbi s\u1ef1 t\u1ef1 tin, bi\u1ebft r\u1eb1ng \u0111\u1ecba ch\u1ec9 Bitcoin c\u1ee7a h\u1ecd \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 b\u1edfi c\u00e1c nguy\u00ean t\u1eafc m\u1eadt m\u00e3 m\u1ea1nh m\u1ebd. Khi giao d\u1ecbch ho\u1eb7c \u0111\u1ea7u t\u01b0 qua Pocket Option, ng\u01b0\u1eddi d\u00f9ng g\u1eb7p c\u00e1c \u0111\u1ecba ch\u1ec9 n\u00e0y nh\u01b0 \u0111i\u1ec3m \u0111\u1ebfn cho vi\u1ec7c r\u00fat ti\u1ec1n ho\u1eb7c ngu\u1ed3n g\u1ed1c c\u1ee7a c\u00e1c kho\u1ea3n ti\u1ec1n g\u1eedi.<\/p>\n<h3>T\u1eeb Kh\u00f3a C\u00f4ng khai \u0111\u1ebfn \u0110\u1ecba ch\u1ec9 Bitcoin: C\u00e1c H\u00e0m B\u0103m<\/h3>\n<p>Khi kh\u00f3a c\u00f4ng khai \u0111\u01b0\u1ee3c t\u1ea1o ra, \u0111\u1ecba ch\u1ec9 Bitcoin v\u1eabn c\u1ea7n \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh th\u00f4ng qua c\u00e1c thao t\u00e1c m\u1eadt m\u00e3 b\u1ed5 sung. Kh\u00f3a c\u00f4ng khai tr\u1ea3i qua hai thao t\u00e1c b\u0103m:<\/p>\n<ol>\n<li>\u0110\u1ea7u ti\u00ean, SHA-256 (Thu\u1eadt to\u00e1n B\u0103m B\u1ea3o m\u1eadt 256-bit) bi\u1ebfn \u0111\u1ed5i kh\u00f3a c\u00f4ng khai 512-bit th\u00e0nh m\u1ed9t b\u1ea3n t\u00f3m t\u1eaft 256-bit<\/li>\n<li>Ti\u1ebfp theo, RIPEMD-160 n\u00e9n b\u1ea3n t\u00f3m t\u1eaft 256-bit n\u00e0y th\u00e0nh m\u1ed9t b\u0103m 160-bit d\u1ec5 qu\u1ea3n l\u00fd h\u01a1n (20 byte)<\/li>\n<\/ol>\n<p>Ph\u01b0\u01a1ng ph\u00e1p b\u0103m k\u00e9p n\u00e0y ph\u1ee5c v\u1ee5 nhi\u1ec1u m\u1ee5c \u0111\u00edch: n\u00f3 r\u00fat ng\u1eafn \u0111\u1ed9 d\u00e0i c\u1ee7a \u0111\u1ecbnh danh t\u1eeb 512 bit xu\u1ed1ng 160 bit \u0111\u1ec3 s\u1eed d\u1ee5ng th\u1ef1c t\u1ebf, cung c\u1ea5p m\u1ed9t l\u1edbp b\u1ea3o m\u1eadt b\u1ed5 sung ch\u1ed1ng l\u1ea1i c\u00e1c m\u1ed1i \u0111e d\u1ecda t\u1eeb m\u00e1y t\u00ednh l\u01b0\u1ee3ng t\u1eed ti\u1ec1m n\u0103ng, v\u00e0 t\u1ea1o ra m\u1ed9t \u0111\u1ecbnh danh gi\u1ed1ng nh\u01b0 d\u1ea5u v\u00e2n tay d\u1ec5 l\u00e0m vi\u1ec7c h\u01a1n so v\u1edbi kh\u00f3a c\u00f4ng khai \u0111\u1ea7y \u0111\u1ee7.<\/p>\n<div class=\"table-container\">\n<table>\n<thead>\n<tr>\n<th>B\u01b0\u1edbc B\u0103m<\/th>\n<th>Ch\u1ee9c n\u0103ng<\/th>\n<th>K\u00edch th\u01b0\u1edbc \u0110\u1ea7u ra<\/th>\n<th>M\u1ee5c \u0111\u00edch<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>B\u0103m \u0110\u1ea7u ti\u00ean<\/td>\n<td>SHA-256(Kh\u00f3a C\u00f4ng khai)<\/td>\n<td>256 bit<\/td>\n<td>Bi\u1ebfn \u0111\u1ed5i ban \u0111\u1ea7u<\/td>\n<\/tr>\n<tr>\n<td>B\u0103m Th\u1ee9 hai<\/td>\n<td>RIPEMD-160(K\u1ebft qu\u1ea3 SHA-256)<\/td>\n<td>160 bit<\/td>\n<td>Gi\u1ea3m k\u00edch th\u01b0\u1edbc v\u00e0 b\u1ea3o m\u1eadt b\u1ed5 sung<\/td>\n<\/tr>\n<tr>\n<td>T\u1ea1o Checksum<\/td>\n<td>4 byte \u0111\u1ea7u ti\u00ean c\u1ee7a SHA-256(SHA-256(Phi\u00ean b\u1ea3n + B\u0103m RIPEMD-160))<\/td>\n<td>32 bit<\/td>\n<td>Ph\u00e1t hi\u1ec7n l\u1ed7i<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2>\u0110\u1ecbnh d\u1ea1ng \u0110\u1ecba ch\u1ec9 Bitcoin v\u00e0 S\u1ef1 Kh\u00e1c bi\u1ec7t To\u00e1n h\u1ecdc c\u1ee7a Ch\u00fang<\/h2>\n<p>H\u1ec7 sinh th\u00e1i Bitcoin \u0111\u00e3 ph\u00e1t tri\u1ec3n \u0111\u1ec3 t\u00edch h\u1ee3p c\u00e1c \u0111\u1ecbnh d\u1ea1ng \u0111\u1ecba ch\u1ec9 kh\u00e1c nhau, m\u1ed7i \u0111\u1ecbnh d\u1ea1ng c\u00f3 c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m to\u00e1n h\u1ecdc v\u00e0 m\u1ee5c \u0111\u00edch c\u1ee5 th\u1ec3. Hi\u1ec3u c\u00e1c \u0111\u1ecbnh d\u1ea1ng n\u00e0y l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi b\u1ea5t k\u1ef3 ai giao d\u1ecbch v\u1edbi ti\u1ec1n \u0111i\u1ec7n t\u1eed tr\u00ean c\u00e1c n\u1ec1n t\u1ea3ng giao d\u1ecbch nh\u01b0 Pocket Option.<\/p>\n<div class=\"table-container\">\n<table>\n<thead>\n<tr>\n<th>\u0110\u1ecbnh d\u1ea1ng \u0110\u1ecba ch\u1ec9<\/th>\n<th>Ti\u1ec1n t\u1ed1<\/th>\n<th>\u0110\u1eb7c \u0111i\u1ec3m To\u00e1n h\u1ecdc<\/th>\n<th>Tr\u01b0\u1eddng h\u1ee3p S\u1eed d\u1ee5ng<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>P2PKH (Legacy)<\/td>\n<td>1<\/td>\n<td>M\u00e3 h\u00f3a Base58Check c\u1ee7a RIPEMD160(SHA256(Kh\u00f3a C\u00f4ng khai)), d\u00e0i 25-34 k\u00fd t\u1ef1<\/td>\n<td>Giao d\u1ecbch ti\u00eau chu\u1ea9n<\/td>\n<\/tr>\n<tr>\n<td>P2SH<\/td>\n<td>3<\/td>\n<td>M\u00e3 h\u00f3a Base58Check c\u1ee7a RIPEMD160(SHA256(Script))<\/td>\n<td>K\u1ecbch b\u1ea3n \u0111a ch\u1eef k\u00fd v\u00e0 ph\u1ee9c t\u1ea1p<\/td>\n<\/tr>\n<tr>\n<td>Bech32 (SegWit)<\/td>\n<td>bc1<\/td>\n<td>M\u00e3 h\u00f3a Bech32 v\u1edbi kh\u1ea3 n\u0103ng ph\u00e1t hi\u1ec7n l\u1ed7i c\u1ea3i ti\u1ebfn, s\u1eed d\u1ee5ng ph\u00e9p chia \u0111a th\u1ee9c trong GF(2)<\/td>\n<td>Giao d\u1ecbch Segregated Witness<\/td>\n<\/tr>\n<tr>\n<td>Taproot<\/td>\n<td>bc1p<\/td>\n<td>M\u00e3 h\u00f3a Bech32m v\u1edbi ch\u1eef k\u00fd Schnorr, t\u1eadn d\u1ee5ng C\u00e2y K\u1ecbch b\u1ea3n Thay th\u1ebf Merkleized (MAST)<\/td>\n<td>T\u0103ng c\u01b0\u1eddng quy\u1ec1n ri\u00eang t\u01b0 v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>M\u1ed7i \u0111\u1ecbnh d\u1ea1ng \u0111\u1ecba ch\u1ec9 n\u00e0y s\u1eed d\u1ee5ng c\u00e1c s\u01a1 \u0111\u1ed3 m\u00e3 h\u00f3a to\u00e1n h\u1ecdc kh\u00e1c nhau \u0111\u1ec3 bi\u1ec3u di\u1ec5n b\u0103m m\u1eadt m\u00e3 c\u01a1 b\u1ea3n. \u0110\u1ecbnh d\u1ea1ng g\u1ed1c s\u1eed d\u1ee5ng m\u00e3 h\u00f3a Base58Check, chuy\u1ec3n \u0111\u1ed5i b\u0103m nh\u1ecb ph\u00e2n th\u00e0nh \u0111\u1ecbnh d\u1ea1ng d\u1ec5 \u0111\u1ecdc h\u01a1n cho con ng\u01b0\u1eddi trong khi lo\u1ea1i b\u1ecf c\u00e1c k\u00fd t\u1ef1 gi\u1ed1ng nhau (nh\u01b0 0, O, I, l) \u0111\u1ec3 gi\u1ea3m l\u1ed7i sao ch\u00e9p.<\/p>\n<p>\u0110\u1ecbnh d\u1ea1ng Bech32 m\u1edbi h\u01a1n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c \u0111\u1ecba ch\u1ec9 SegWit th\u1ef1c hi\u1ec7n m\u1ed9t thu\u1eadt to\u00e1n ph\u00e1t hi\u1ec7n l\u1ed7i tinh vi h\u01a1n b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng m\u1ed9t bi\u1ebfn th\u1ec3 c\u1ee5 th\u1ec3 c\u1ee7a m\u00e3 BCH, cho ph\u00e9p n\u00f3 ph\u00e1t hi\u1ec7n t\u1ea5t c\u1ea3 c\u00e1c l\u1ed7i k\u00fd t\u1ef1 \u0111\u01a1n v\u00e0 g\u1ea7n nh\u01b0 t\u1ea5t c\u1ea3 c\u00e1c ho\u00e1n v\u1ecb c\u1ee7a c\u00e1c k\u00fd t\u1ef1 li\u1ec1n k\u1ec1. C\u1ea3i ti\u1ebfn to\u00e1n h\u1ecdc n\u00e0y gi\u1ea3m \u0111\u00e1ng k\u1ec3 kh\u1ea3 n\u0103ng g\u1eedi ti\u1ec1n \u0111\u1ebfn c\u00e1c \u0111\u1ecba ch\u1ec9 nh\u1eadp sai.<\/p>\n<h2>X\u00e1c su\u1ea5t v\u00e0 B\u1ea3o m\u1eadt: To\u00e1n h\u1ecdc c\u1ee7a Va ch\u1ea1m \u0110\u1ecba ch\u1ec9 Bitcoin<\/h2>\n<p>M\u1ed9t c\u00e2u h\u1ecfi quan tr\u1ecdng khi th\u1ea3o lu\u1eadn v\u1ec1 \u0111\u1ecba ch\u1ec9 Bitcoin l\u00e0 kh\u1ea3 n\u0103ng l\u00fd thuy\u1ebft c\u1ee7a va ch\u1ea1m \u0111\u1ecba ch\u1ec9 &#8211; hai kh\u00f3a ri\u00eang t\u01b0 kh\u00e1c nhau t\u1ea1o ra c\u00f9ng m\u1ed9t \u0111\u1ecba ch\u1ec9 Bitcoin. C\u00e2u h\u1ecfi n\u00e0y li\u00ean quan \u0111\u1ebfn l\u00fd thuy\u1ebft x\u00e1c su\u1ea5t v\u00e0 to\u00e1n h\u1ecdc c\u1ee7a c\u00e1c s\u1ed1 l\u1edbn.<\/p>\n<p>B\u0103m 160-bit RIPEMD-160 t\u1ea1o ra ch\u00ednh x\u00e1c 2\u00b9\u2076\u2070 \u0111\u1ecba ch\u1ec9 Bitcoin c\u00f3 th\u1ec3 c\u00f3 (1,461,501,637,330,902,918,203,684,832,716,283,019,655,932,542,976). \u0110\u1ec3 c\u00f3 c\u00e1i nh\u00ecn v\u1ec1 con s\u1ed1 thi\u00ean v\u0103n n\u00e0y\u2014th\u1ef1c t\u1ebf l\u00e0 1.46 \u00d7 10\u2074\u2078\u2014h\u00e3y xem x\u00e9t c\u00e1c so s\u00e1nh sau:<\/p>\n<div class=\"table-container\">\n<table>\n<thead>\n<tr>\n<th>\u0110i\u1ec3m Tham chi\u1ebfu<\/th>\n<th>S\u1ed1 l\u01b0\u1ee3ng<\/th>\n<th>So s\u00e1nh v\u1edbi Kh\u00f4ng gian \u0110\u1ecba ch\u1ec9 Bitcoin<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Nguy\u00ean t\u1eed trong v\u0169 tr\u1ee5 quan s\u00e1t \u0111\u01b0\u1ee3c<\/td>\n<td>~10<sup>80<\/sup><\/td>\n<td>V\u1eabn nh\u1ecf h\u01a1n r\u1ea5t nhi\u1ec1u so v\u1edbi 2<sup>256<\/sup> (kh\u00f4ng gian kh\u00f3a ri\u00eang t\u01b0)<\/td>\n<\/tr>\n<tr>\n<td>H\u1ea1t c\u00e1t tr\u00ean Tr\u00e1i \u0110\u1ea5t<\/td>\n<td>~10<sup>20<\/sup><\/td>\n<td>Nh\u1ecf h\u01a1n nhi\u1ec1u so v\u1edbi 2<sup>160<\/sup> (kh\u00f4ng gian \u0111\u1ecba ch\u1ec9)<\/td>\n<\/tr>\n<tr>\n<td>Giao d\u1ecbch Bitcoin h\u00e0ng n\u0103m<\/td>\n<td>~10<sup>8<\/sup><\/td>\n<td>Ph\u1ea7n nh\u1ecf kh\u00f4ng \u0111\u00e1ng k\u1ec3 c\u1ee7a kh\u00f4ng gian \u0111\u1ecba ch\u1ec9<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>Kh\u1ea3 n\u0103ng va ch\u1ea1m c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n t\u00edch b\u1eb1ng nguy\u00ean l\u00fd ngh\u1ecbch l\u00fd sinh nh\u1eadt. Ngay c\u1ea3 v\u1edbi m\u1ed9t t\u1ef7 \u0111\u1ecba ch\u1ec9 Bitcoin \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng, kh\u1ea3 n\u0103ng x\u1ea3y ra va ch\u1ea1m v\u1eabn c\u1ef1c k\u1ef3 nh\u1ecf &#8211; kho\u1ea3ng 10<sup>-33<\/sup>, \u0111i\u1ec1u n\u00e0y th\u1ef1c t\u1ebf l\u00e0 kh\u00f4ng c\u00f3 \u0111\u1ed1i v\u1edbi c\u00e1c m\u1ee5c \u0111\u00edch th\u1ef1c t\u1ebf. T\u00ednh ch\u1ea5t to\u00e1n h\u1ecdc n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng khi b\u1ea1n t\u1ea1o m\u1ed9t \u0111\u1ecba ch\u1ec9 Bitcoin m\u1edbi tr\u00ean Pocket Option ho\u1eb7c b\u1ea5t k\u1ef3 n\u1ec1n t\u1ea3ng n\u00e0o kh\u00e1c, b\u1ea1n c\u00f3 th\u1ec3 g\u1ea7n nh\u01b0 ch\u1eafc ch\u1eafn r\u1eb1ng n\u00f3 l\u00e0 duy nh\u1ea5t trong h\u1ec7 sinh th\u00e1i to\u00e0n c\u1ea7u.<\/p>\n<h2>Ph\u01b0\u01a1ng ph\u00e1p Ph\u00e2n t\u00edch \u0110\u1ecba ch\u1ec9 Bitcoin<\/h2>\n<p>\u0110\u1ecba ch\u1ec9 Bitcoin t\u00edch h\u1ee3p c\u00e1c c\u01a1 ch\u1ebf x\u00e1c th\u1ef1c to\u00e1n h\u1ecdc tinh vi \u0111\u1ec3 ng\u0103n ch\u1eb7n l\u1ed7i ng\u1eabu nhi\u00ean. Hi\u1ec3u c\u00e1c c\u01a1 ch\u1ebf n\u00e0y cung c\u1ea5p c\u00e1i nh\u00ecn s\u00e2u s\u1eafc v\u1ec1 c\u00e1ch h\u1ec7 th\u1ed1ng duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n m\u00e0 kh\u00f4ng c\u1ea7n gi\u00e1m s\u00e1t trung t\u00e2m.<\/p>\n<h3>To\u00e1n h\u1ecdc Checksum<\/h3>\n<p>\u0110\u1ecba ch\u1ec9 Bitcoin bao g\u1ed3m m\u1ed9t m\u00e3 ki\u1ec3m tra l\u1ed7i t\u00edch h\u1ee3p g\u1ecdi l\u00e0 checksum, \u0111\u01b0\u1ee3c t\u1ea1o ra to\u00e1n h\u1ecdc t\u1eeb ch\u00ednh \u0111\u1ecba ch\u1ec9. Checksum 4 byte n\u00e0y \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1eb1ng c\u00e1ch:<\/p>\n<ol>\n<li>L\u1ea5y b\u0103m RIPEMD-160 v\u1edbi byte phi\u00ean b\u1ea3n<\/li>\n<li>Th\u1ef1c hi\u1ec7n b\u0103m SHA-256 hai l\u1ea7n tr\u00ean gi\u00e1 tr\u1ecb n\u00e0y<\/li>\n<li>L\u1ea5y 4 byte \u0111\u1ea7u ti\u00ean c\u1ee7a b\u0103m k\u1ebft qu\u1ea3<\/li>\n<\/ol>\n<p>Trong qu\u00e1 tr\u00ecnh x\u00e1c th\u1ef1c \u0111\u1ecba ch\u1ec9, ph\u1ea7n m\u1ec1m t\u00ednh to\u00e1n l\u1ea1i checksum n\u00e0y v\u00e0 so s\u00e1nh v\u1edbi gi\u00e1 tr\u1ecb nh\u00fang. X\u00e1c th\u1ef1c to\u00e1n h\u1ecdc n\u00e0y ngay l\u1eadp t\u1ee9c x\u00e1c \u0111\u1ecbnh 99.9% l\u1ed7i \u0111\u00e1nh m\u00e1y tr\u01b0\u1edbc khi b\u1ea5t k\u1ef3 giao d\u1ecbch n\u00e0o x\u1ea3y ra, ng\u0103n ch\u1eb7n m\u1ea5t bitcoin ng\u1eabu nhi\u00ean. V\u00ed d\u1ee5, ch\u1ec9 c\u1ea7n thay \u0111\u1ed5i m\u1ed9t k\u00fd t\u1ef1 trong \u0111\u1ecba ch\u1ec9 Bitcoin c\u00f3 kh\u1ea3 n\u0103ng 99.9609% t\u1ea1o ra m\u1ed9t checksum kh\u00f4ng h\u1ee3p l\u1ec7.<\/p>\n<div class=\"table-container\">\n<table>\n<thead>\n<tr>\n<th>Ki\u1ec3m tra X\u00e1c th\u1ef1c<\/th>\n<th>Thao t\u00e1c To\u00e1n h\u1ecdc<\/th>\n<th>Kh\u1ea3 n\u0103ng Ph\u00e1t hi\u1ec7n<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>X\u00e1c minh Checksum<\/td>\n<td>SHA-256 k\u00e9p v\u00e0 so s\u00e1nh<\/td>\n<td>Ph\u00e1t hi\u1ec7n ~99.9% l\u1ed7i ng\u1eabu nhi\u00ean<\/td>\n<\/tr>\n<tr>\n<td>X\u00e1c th\u1ef1c b\u1ed9 k\u00fd t\u1ef1<\/td>\n<td>Ki\u1ec3m tra b\u1ed9 k\u00fd t\u1ef1 Base58<\/td>\n<td>Lo\u1ea1i b\u1ecf c\u00e1c k\u00fd t\u1ef1 d\u1ec5 nh\u1ea7m l\u1eabn (0, O, l, I)<\/td>\n<\/tr>\n<tr>\n<td>X\u00e1c th\u1ef1c \u0111\u1ed9 d\u00e0i<\/td>\n<td>Ki\u1ec3m tra \u0111\u1ed9 d\u00e0i chu\u1ed7i<\/td>\n<td>\u0110\u1ea3m b\u1ea3o \u0111\u1ed9 d\u00e0i m\u00e3 h\u00f3a \u0111\u00fang<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c \u0111\u1ecba ch\u1ec9 Bech32, to\u00e1n h\u1ecdc x\u00e1c th\u1ef1c tr\u1edf n\u00ean tinh vi h\u01a1n, s\u1eed d\u1ee5ng ph\u00e9p chia \u0111a th\u1ee9c tr\u00ean GF(2), cung c\u1ea5p kh\u1ea3 n\u0103ng ph\u00e1t hi\u1ec7n l\u1ed7i m\u1ea1nh h\u01a1n bao g\u1ed3m kh\u1ea3 n\u0103ng ph\u00e1t hi\u1ec7n b\u1ea5t k\u1ef3 l\u1ed7i \u0111\u01a1n n\u00e0o, t\u1ea5t c\u1ea3 c\u00e1c l\u1ed7i ho\u00e1n v\u1ecb li\u1ec1n k\u1ec1, v\u00e0 h\u1ea7u h\u1ebft c\u00e1c l\u1ed7i nhi\u1ec1u.<\/p>\n<h2>Ph\u00e2n t\u00edch \u0110\u1ecbnh l\u01b0\u1ee3ng v\u1ec1 M\u1eabu S\u1eed d\u1ee5ng \u0110\u1ecba ch\u1ec9 Bitcoin<\/h2>\n<p>Kh\u00e1m ph\u00e1 vi\u1ec7c s\u1eed d\u1ee5ng \u0111\u1ecba ch\u1ec9 Bitcoin th\u00f4ng qua ph\u00e2n t\u00edch d\u1eef li\u1ec7u cung c\u1ea5p c\u00e1i nh\u00ecn s\u00e2u s\u1eafc v\u1ec1 h\u00e0nh vi m\u1ea1ng v\u00e0 th\u1ef1c h\u00e0nh b\u1ea3o m\u1eadt. Khi ph\u00e2n t\u00edch m\u1eabu s\u1eed d\u1ee5ng \u0111\u1ecba ch\u1ec9 Bitcoin, m\u1ed9t s\u1ed1 ch\u1ec9 s\u1ed1 n\u1ed5i b\u1eadt l\u00e0 \u0111\u1eb7c bi\u1ec7t th\u00f4ng tin.<\/p>\n<div class=\"table-container\">\n<table>\n<thead>\n<tr>\n<th>Ch\u1ec9 s\u1ed1<\/th>\n<th>Ph\u01b0\u01a1ng ph\u00e1p T\u00ednh to\u00e1n<\/th>\n<th>Di\u1ec5n gi\u1ea3i<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>T\u1ef7 l\u1ec7 t\u00e1i s\u1eed d\u1ee5ng \u0111\u1ecba ch\u1ec9<\/td>\n<td>(Giao d\u1ecbch s\u1eed d\u1ee5ng \u0111\u1ecba ch\u1ec9 \u0111\u00e3 s\u1eed d\u1ee5ng tr\u01b0\u1edbc \u0111\u00f3) \u00f7 (T\u1ed5ng s\u1ed1 giao d\u1ecbch)<\/td>\n<td>Th\u1ea5p h\u01a1n l\u00e0 t\u1ed1t h\u01a1n cho quy\u1ec1n ri\u00eang t\u01b0, th\u01b0\u1eddng &lt;15% tr\u00ean c\u00e1c n\u1ec1n t\u1ea3ng hi\u1ec7n \u0111\u1ea1i<\/td>\n<\/tr>\n<tr>\n<td>Ph\u00e2n ph\u1ed1i s\u1ed1 d\u01b0 \u0111\u1ecba ch\u1ec9<\/td>\n<td>Ph\u00e2n t\u00edch ph\u00e2n ph\u1ed1i th\u1ed1ng k\u00ea c\u1ee7a gi\u00e1 tr\u1ecb UTXO<\/td>\n<td>Ch\u1ec9 ra s\u1ef1 t\u1eadp trung c\u1ee7a c\u1ea3i<\/td>\n<\/tr>\n<tr>\n<td>Th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng n\u1eeda \u0111\u1eddi c\u1ee7a \u0111\u1ecba ch\u1ec9<\/td>\n<td>Th\u1eddi gian \u0111\u1ec3 50% \u0111\u1ecba ch\u1ec9 tr\u1edf n\u00ean kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng<\/td>\n<td>\u0110o l\u01b0\u1eddng s\u1ef1 gi\u1eef ch\u00e2n ng\u01b0\u1eddi d\u00f9ng<\/td>\n<\/tr>\n<tr>\n<td>T\u1ef7 l\u1ec7 ch\u1ea5p nh\u1eadn \u0111\u1ecbnh d\u1ea1ng<\/td>\n<td>(\u0110\u1ecba ch\u1ec9 m\u1edbi c\u1ee7a \u0111\u1ecbnh d\u1ea1ng X) \u00f7 (T\u1ea5t c\u1ea3 \u0111\u1ecba ch\u1ec9 m\u1edbi), \u0111o l\u01b0\u1eddng trung b\u00ecnh \u0111\u1ed9ng 7 ng\u00e0y<\/td>\n<td>Ch\u1ec9 ra s\u1ef1 ch\u1ea5p nh\u1eadn c\u00f4ng ngh\u1ec7<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>C\u00e1c n\u1ec1n t\u1ea3ng giao d\u1ecbch nh\u01b0 Pocket Option tri\u1ec3n khai c\u00e1c h\u1ec7 th\u1ed1ng tinh vi \u0111\u1ec3 gi\u00e1m s\u00e1t c\u00e1c ch\u1ec9 s\u1ed1 n\u00e0y v\u00e0 \u0111\u1ea3m b\u1ea3o th\u1ef1c h\u00e0nh b\u1ea3o m\u1eadt t\u1ed1i \u01b0u khi x\u1eed l\u00fd ti\u1ec1n g\u1eedi v\u00e0 r\u00fat ti\u1ec1n c\u1ee7a kh\u00e1ch h\u00e0ng. B\u1eb1ng c\u00e1ch ph\u00e2n t\u00edch c\u00e1c m\u1eabu n\u00e0y, c\u1ea3 ng\u01b0\u1eddi d\u00f9ng v\u00e0 nh\u00e0 \u0111i\u1ec1u h\u00e0nh n\u1ec1n t\u1ea3ng c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng ng\u1edd v\u00e0 c\u1ea3i thi\u1ec7n c\u00e1c giao th\u1ee9c b\u1ea3o m\u1eadt.<\/p>\n<ul>\n<li>C\u00e1c k\u1ef9 thu\u1eadt ph\u00e2n c\u1ee5m \u0111\u1ecba ch\u1ec9 s\u1eed d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p to\u00e1n h\u1ecdc \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c \u0111\u1ecba ch\u1ec9 c\u00f3 kh\u1ea3 n\u0103ng \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t b\u1edfi c\u00f9ng m\u1ed9t th\u1ef1c th\u1ec3<\/li>\n<li>Ph\u00e2n t\u00edch th\u1eddi gian ki\u1ec3m tra c\u00e1c m\u1eabu th\u1eddi gian c\u1ee7a vi\u1ec7c t\u1ea1o v\u00e0 s\u1eed d\u1ee5ng \u0111\u1ecba ch\u1ec9<\/li>\n<li>L\u00fd thuy\u1ebft \u0111\u1ed3 th\u1ecb m\u1ea1ng \u00e1p d\u1ee5ng c\u00e1c m\u00f4 h\u00ecnh to\u00e1n h\u1ecdc \u0111\u1ec3 tr\u1ef1c quan h\u00f3a v\u00e0 ph\u00e2n t\u00edch m\u1ed1i quan h\u1ec7 \u0111\u1ecba ch\u1ec9<\/li>\n<\/ul>\n<h2>Th\u1ef1c hi\u1ec7n Ph\u00e2n t\u00edch \u0110\u1ecba ch\u1ec9 Bitcoin cho Nh\u00e0 giao d\u1ecbch<\/h2>\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c nh\u00e0 giao d\u1ecbch s\u1eed d\u1ee5ng c\u00e1c n\u1ec1n t\u1ea3ng nh\u01b0 Pocket Option, hi\u1ec3u bi\u1ebft v\u1ec1 ph\u00e2n t\u00edch \u0111\u1ecba ch\u1ec9 Bitcoin c\u00f3 th\u1ec3 cung c\u1ea5p nh\u1eefng c\u00e1i nh\u00ecn c\u00f3 gi\u00e1 tr\u1ecb cho c\u00e1c quy\u1ebft \u0111\u1ecbnh \u0111\u1ea7u t\u01b0. C\u00e1c k\u1ef9 thu\u1eadt to\u00e1n h\u1ecdc n\u00e0y cho ph\u00e9p c\u00e1c chi\u1ebfn l\u01b0\u1ee3c giao d\u1ecbch th\u00f4ng minh h\u01a1n.<\/p>\n<div class=\"table-container\">\n<table>\n<thead>\n<tr>\n<th>K\u1ef9 thu\u1eadt Ph\u00e2n t\u00edch<\/th>\n<th>Ph\u01b0\u01a1ng ph\u00e1p To\u00e1n h\u1ecdc<\/th>\n<th>\u1ee8ng d\u1ee5ng Giao d\u1ecbch<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Gi\u00e1m s\u00e1t \u0111\u1ecba ch\u1ec9 c\u00e1 voi<\/td>\n<td>Ph\u00e1t hi\u1ec7n ngo\u1ea1i l\u1ec7 th\u1ed1ng k\u00ea<\/td>\n<td>D\u1ef1 \u0111o\u00e1n c\u00e1c chuy\u1ec3n \u0111\u1ed9ng th\u1ecb tr\u01b0\u1eddng l\u1edbn<\/td>\n<\/tr>\n<tr>\n<td>D\u00f2ng v\u00e0o\/ra c\u1ee7a s\u00e0n giao d\u1ecbch<\/td>\n<td>Ph\u00e2n t\u00edch chu\u1ed7i th\u1eddi gian c\u1ee7a c\u00e1c \u0111\u1ecba ch\u1ec9 \u0111\u01b0\u1ee3c g\u1eafn th\u1ebb s\u00e0n giao d\u1ecbch<\/td>\n<td>\u0110\u00e1nh gi\u00e1 t\u00e2m l\u00fd th\u1ecb tr\u01b0\u1eddng<\/td>\n<\/tr>\n<tr>\n<td>S\u00f3ng HODL<\/td>\n<td>Ph\u00e2n t\u00edch nh\u00f3m tu\u1ed5i c\u1ee7a UTXO<\/td>\n<td>X\u00e1c \u0111\u1ecbnh c\u00e1c giai \u0111o\u1ea1n t\u00edch l\u0169y\/ph\u00e2n ph\u1ed1i<\/td>\n<\/tr>\n<tr>\n<td>Ch\u1ec9 s\u1ed1 gi\u00e1 tr\u1ecb th\u1ef1c hi\u1ec7n<\/td>\n<td>T\u00ednh to\u00e1n c\u00f3 tr\u1ecdng s\u1ed1 d\u1ef1a tr\u00ean gi\u00e1 tr\u1ecb v\u00e0 tu\u1ed5i c\u1ee7a UTXO<\/td>\n<td>X\u00e1c \u0111\u1ecbnh c\u00e1c \u0111\u00e1y\/\u0111\u1ec9nh th\u1ecb tr\u01b0\u1eddng ti\u1ec1m n\u0103ng<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>\u0110\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e2n t\u00edch n\u00e0y, c\u00e1c nh\u00e0 giao d\u1ecbch c\u00f3 th\u1ec3 l\u00e0m theo c\u00e1c b\u01b0\u1edbc sau:<\/p>\n<ul>\n<li>Tr\u00edch xu\u1ea5t d\u1eef li\u1ec7u l\u1ecbch s\u1eed t\u1eeb c\u00e1c tr\u00ecnh kh\u00e1m ph\u00e1 blockchain\u2014theo d\u00f5i c\u00e1c \u0111\u1ecba ch\u1ec9 c\u00f3 s\u1ed1 d\u01b0 &gt;100 BTC \u0111\u1ec3 c\u00f3 t\u00edn hi\u1ec7u t\u1ed1i \u01b0u<\/li>\n<li>\u00c1p d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p th\u1ed1ng k\u00ea \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c sai l\u1ec7ch \u0111\u00e1ng k\u1ec3 so v\u1edbi c\u00e1c m\u1eabu b\u00ecnh th\u01b0\u1eddng<\/li>\n<li>T\u00ednh to\u00e1n h\u1ec7 s\u1ed1 t\u01b0\u01a1ng quan gi\u1eefa c\u00e1c ch\u1ec9 s\u1ed1 \u0111\u1ecba ch\u1ec9 v\u00e0 bi\u1ebfn \u0111\u1ed9ng gi\u00e1<\/li>\n<li>Ph\u00e1t tri\u1ec3n c\u00e1c m\u00f4 h\u00ecnh d\u1ef1 \u0111o\u00e1n k\u1ebft h\u1ee3p c\u00e1c ch\u1ec9 s\u1ed1 n\u00e0y nh\u01b0 c\u00e1c ch\u1ec9 b\u00e1o d\u1eabn \u0111\u1ea7u<\/li>\n<\/ul>\n<p>Pocket Option cung c\u1ea5p c\u00e1c c\u00f4ng c\u1ee5 t\u00edch h\u1ee3p m\u1ed9t s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch n\u00e0y, gi\u00fap c\u00e1c nh\u00e0 giao d\u1ecbch \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh th\u00f4ng minh h\u01a1n d\u1ef1a tr\u00ean d\u1eef li\u1ec7u blockchain thay v\u00ec ch\u1ec9 d\u1ef1a v\u00e0o bi\u1ec3u \u0111\u1ed3 gi\u00e1. C\u00e1ch ti\u1ebfp c\u1eadn to\u00e1n h\u1ecdc n\u00e0y \u0111\u1ed1i v\u1edbi giao d\u1ecbch \u0111\u1ea1i di\u1ec7n cho m\u1ed9t chi\u1ebfn l\u01b0\u1ee3c tinh vi h\u01a1n so v\u1edbi ph\u00e2n t\u00edch k\u1ef9 thu\u1eadt truy\u1ec1n th\u1ed1ng.<\/p>\n<h2>C\u00e1c Kh\u00e1i ni\u1ec7m To\u00e1n h\u1ecdc N\u00e2ng cao trong B\u1ea3o m\u1eadt \u0110\u1ecba ch\u1ec9 Bitcoin<\/h2>\n<p>Ngo\u00e0i c\u00e1c ch\u1ee9c n\u0103ng m\u1eadt m\u00e3 c\u01a1 b\u1ea3n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ea1o \u0111\u1ecba ch\u1ec9 Bitcoin, m\u1ed9t s\u1ed1 kh\u00e1i ni\u1ec7m to\u00e1n h\u1ecdc n\u00e2ng cao \u0111\u00f3ng g\u00f3p v\u00e0o b\u1ea3o m\u1eadt v\u00e0 ch\u1ee9c n\u0103ng c\u1ee7a ch\u00fang. Hi\u1ec3u c\u00e1c kh\u00e1i ni\u1ec7m n\u00e0y cung c\u1ea5p c\u00e1i nh\u00ecn s\u00e2u s\u1eafc h\u01a1n v\u1ec1 \u0111\u1ecba ch\u1ec9 Bitcoin \u1edf m\u1ee9c c\u01a1 b\u1ea3n nh\u1ea5t.<\/p>\n<h3>Entropy v\u00e0 T\u1ea1o S\u1ed1 Ng\u1eabu nhi\u00ean<\/h3>\n<p>B\u1ea3o m\u1eadt c\u1ee7a m\u1ed9t \u0111\u1ecba ch\u1ec9 Bitcoin b\u1eaft \u0111\u1ea7u v\u1edbi entropy (t\u00ednh ng\u1eabu nhi\u00ean) c\u1ee7a vi\u1ec7c t\u1ea1o kh\u00f3a ri\u00eang t\u01b0. Entropy kh\u00f4ng \u0111\u1ee7 c\u00f3 th\u1ec3 t\u1ea1o ra c\u00e1c kh\u00f3a c\u00f3 th\u1ec3 d\u1ef1 \u0111o\u00e1n, l\u00e0m cho c\u00e1c \u0111\u1ecba ch\u1ec9 d\u1ec5 b\u1ecb t\u1ea5n c\u00f4ng brute force. \u0110o l\u01b0\u1eddng to\u00e1n h\u1ecdc c\u1ee7a entropy b\u1eb1ng bit x\u00e1c \u0111\u1ecbnh b\u1ea3o m\u1eadt th\u1ef1c t\u1ebf c\u1ee7a h\u1ec7 th\u1ed1ng. \u0110\u1ec3 c\u00f3 c\u00e1i nh\u00ecn, m\u1ed9t kh\u00f3a ri\u00eang t\u01b0 ch\u1ec9 c\u00f3 70 bit entropy (thay v\u00ec \u0111\u1ea7y \u0111\u1ee7 256 bit) c\u00f3 th\u1ec3 b\u1ecb brute force trong kho\u1ea3ng 36 ng\u00e0y s\u1eed d\u1ee5ng ph\u1ea7n c\u1ee9ng chuy\u00ean d\u1ee5ng\u2014nh\u1ea5n m\u1ea1nh t\u1ea1i sao vi\u1ec7c t\u1ea1o s\u1ed1 ng\u1eabu nhi\u00ean \u0111\u00fang l\u00e0 r\u1ea5t quan tr\u1ecdng khi t\u1ea1o \u0111\u1ecba ch\u1ec9 Bitcoin.<\/p>\n<div class=\"table-container\">\n<table>\n<thead>\n<tr>\n<th>Ngu\u1ed3n Entropy<\/th>\n<th>Bit c\u1ee7a Entropy<\/th>\n<th>B\u1ea3o m\u1eadt T\u01b0\u01a1ng \u0111\u1ed1i<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>B\u1ed9 t\u1ea1o s\u1ed1 ng\u1eabu nhi\u00ean gi\u1ea3<\/td>\n<td>Thay \u0111\u1ed5i (c\u00f3 th\u1ec3 th\u1ea5p)<\/td>\n<td>C\u00f3 th\u1ec3 d\u1ec5 b\u1ecb t\u1ea5n c\u00f4ng<\/td>\n<\/tr>\n<tr>\n<td>B\u1ed9 t\u1ea1o s\u1ed1 ng\u1eabu nhi\u00ean ph\u1ea7n c\u1ee9ng<\/td>\n<td>~256 bit<\/td>\n<td>B\u1ea3o m\u1eadt cao<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ea7u v\u00e0o &#8220;ng\u1eabu nhi\u00ean&#8221; do con ng\u01b0\u1eddi t\u1ea1o ra<\/td>\n<td>~28 bit<\/td>\n<td>R\u1ea5t d\u1ec5 b\u1ecb t\u1ea5n c\u00f4ng<\/td>\n<\/tr>\n<tr>\n<td>Quay x\u00fac x\u1eafc (100 l\u1ea7n)<\/td>\n<td>~166 bit<\/td>\n<td>B\u1ea3o m\u1eadt t\u1ed1t<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>Khi ng\u01b0\u1eddi d\u00f9ng t\u1ea1o v\u00ed tr\u00ean c\u00e1c n\u1ec1n t\u1ea3ng nh\u01b0 Pocket Option, n\u1ec1n t\u1ea3ng th\u01b0\u1eddng s\u1eed d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p t\u1ea1o s\u1ed1 ng\u1eabu nhi\u00ean an to\u00e0n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o entropy t\u1ed1i \u0111a trong vi\u1ec7c t\u1ea1o \u0111\u1ecba ch\u1ec9. N\u1ec1n t\u1ea3ng to\u00e1n h\u1ecdc n\u00e0y cung c\u1ea5p s\u1ef1 t\u1ef1 tin r\u1eb1ng c\u00e1c \u0111\u1ecba ch\u1ec9 s\u1ebd ch\u1ed1ng l\u1ea1i c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng ph\u00e2n t\u00edch m\u1eadt m\u00e3.<\/p>\n<h3>B\u1eb1ng ch\u1ee9ng Kh\u00f4ng Ki\u1ebfn th\u1ee9c v\u00e0 X\u00e1c minh \u0110\u1ecba ch\u1ec9 Bitcoin<\/h3>\n<p>B\u1eb1ng ch\u1ee9ng kh\u00f4ng ki\u1ebfn th\u1ee9c \u0111\u1ea1i di\u1ec7n cho m\u1ed9t kh\u00e1i ni\u1ec7m to\u00e1n h\u1ecdc ti\u00ean ti\u1ebfn cho ph\u00e9p m\u1ed9t b\u00ean ch\u1ee9ng minh cho b\u00ean kh\u00e1c r\u1eb1ng m\u1ed9t tuy\u00ean b\u1ed1 l\u00e0 \u0111\u00fang m\u00e0 kh\u00f4ng ti\u1ebft l\u1ed9 b\u1ea5t k\u1ef3 th\u00f4ng tin b\u1ed5 sung n\u00e0o. Trong b\u1ed1i c\u1ea3nh \u0111\u1ecba ch\u1ec9 Bitcoin, \u0111i\u1ec1u n\u00e0y cho ph\u00e9p:<\/p>\n<ul>\n<li>Ch\u1ee9ng minh quy\u1ec1n s\u1edf h\u1eefu m\u1ed9t \u0111\u1ecba ch\u1ec9 m\u00e0 kh\u00f4ng ti\u1ebft l\u1ed9 kh\u00f3a ri\u00eang t\u01b0<\/li>\n<li>X\u00e1c minh t\u00ednh h\u1ee3p l\u1ec7 c\u1ee7a m\u1ed9t giao d\u1ecbch m\u00e0 kh\u00f4ng ti\u1ebft l\u1ed9 chi ti\u1ebft giao d\u1ecbch<\/li>\n<li>X\u00e1c nh\u1eadn s\u1ed1 d\u01b0 \u0111\u1ecba ch\u1ec9 m\u00e0 kh\u00f4ng ti\u1ebft l\u1ed9 s\u1ed1 ti\u1ec1n ch\u00ednh x\u00e1c<\/li>\n<\/ul>\n<p>C\u00e1c c\u1ea5u tr\u00fac to\u00e1n h\u1ecdc n\u00e0y ng\u00e0y c\u00e0ng tr\u1edf n\u00ean quan tr\u1ecdng trong c\u00e1c \u1ee9ng d\u1ee5ng ti\u1ec1n \u0111i\u1ec7n t\u1eed t\u0103ng c\u01b0\u1eddng quy\u1ec1n ri\u00eang t\u01b0, v\u00e0 c\u00e1c nguy\u00ean t\u1eafc c\u1ee7a ch\u00fang m\u1edf r\u1ed9ng \u0111\u1ebfn nhi\u1ec1u kh\u00eda c\u1ea1nh c\u1ee7a giao d\u1ecbch v\u00e0 \u0111\u1ea7u t\u01b0 ti\u1ec1n \u0111i\u1ec7n t\u1eed tr\u00ean c\u00e1c n\u1ec1n t\u1ea3ng nh\u01b0 Pocket Option, \u0111\u1eb7c bi\u1ec7t khi x\u00e1c minh quy\u1ec1n s\u1edf h\u1eefu trong qu\u00e1 tr\u00ecnh r\u00fat ti\u1ec1n.<\/p>\n    <div class=\"po-container po-container_width_article\">\n        <a href=\"\/en\/quick-start\/\" class=\"po-line-banner po-article-page__line-banner\">\n            <svg class=\"svg-image po-line-banner__logo\" fill=\"currentColor\" width=\"auto\" height=\"auto\"\n                 aria-hidden=\"true\">\n                <use href=\"#svg-img-logo-white\"><\/use>\n            <\/svg>\n            <span class=\"po-line-banner__btn\">B\u1eaft \u0111\u1ea7u Giao d\u1ecbch<\/span>\n        <\/a>\n    <\/div>\n    \n<h2>K\u1ebft lu\u1eadn: S\u1ef1 Thanh l\u1ecbch To\u00e1n h\u1ecdc c\u1ee7a \u0110\u1ecba ch\u1ec9 Bitcoin<\/h2>\n<p>Kh\u00e1m ph\u00e1 \u0111\u1ecba ch\u1ec9 bitcoin qua l\u0103ng k\u00ednh to\u00e1n h\u1ecdc ti\u1ebft l\u1ed9 c\u00e1ch m\u1eadt m\u00e3 \u0111\u01b0\u1eddng cong elliptic, c\u00e1c h\u00e0m b\u0103m ch\u00ednh x\u00e1c, v\u00e0 c\u00e1c thu\u1eadt to\u00e1n m\u00e3 h\u00f3a k\u1ebft h\u1ee3p \u0111\u1ec3 t\u1ea1o ra m\u1ed9t h\u1ec7 th\u1ed1ng b\u1ea3o v\u1ec7 h\u01a1n 44 tri\u1ec7u \u0111\u1ecba ch\u1ec9 c\u00f3 gi\u00e1 tr\u1ecb th\u1ef1c. Ki\u1ebfn tr\u00fac m\u1eadt m\u00e3 thanh l\u1ecbch n\u00e0y\u2014\u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng tr\u00ean c\u00e1c nguy\u00ean t\u1eafc t\u1eeb l\u00fd thuy\u1ebft s\u1ed1 ti\u00ean ti\u1ebfn v\u00e0 \u0111\u1ea1i s\u1ed1 tr\u1eebu t\u01b0\u1ee3ng\u2014gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 tr\u01b0\u1edbc \u0111\u00e2y kh\u00f4ng th\u1ec3 gi\u1ea3i quy\u1ebft v\u1ec1 quy\u1ec1n s\u1edf h\u1eefu k\u1ef9 thu\u1eadt s\u1ed1 kh\u00f4ng c\u1ea7n tin c\u1eady tr\u00ean quy m\u00f4 to\u00e0n c\u1ea7u.<\/p>\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c nh\u00e0 giao d\u1ecbch v\u00e0 nh\u00e0 \u0111\u1ea7u t\u01b0 s\u1eed d\u1ee5ng c\u00e1c n\u1ec1n t\u1ea3ng nh\u01b0 Pocket Option, ki\u1ebfn th\u1ee9c n\u00e0y cung c\u1ea5p s\u1ef1 \u0111\u00e1nh gi\u00e1 s\u00e2u s\u1eafc h\u01a1n v\u1ec1 c\u00f4ng ngh\u1ec7 h\u1ed7 tr\u1ee3 c\u00e1c giao d\u1ecbch c\u1ee7a h\u1ecd. C\u00e1c nguy\u00ean t\u1eafc to\u00e1n h\u1ecdc b\u1ea3o v\u1ec7 \u0111\u1ecba ch\u1ec9 Bitcoin \u0111\u1ea3m b\u1ea3o r\u1eb1ng ng\u01b0\u1eddi d\u00f9ng duy tr\u00ec quy\u1ec1n ki\u1ec3m so\u00e1t tuy\u1ec7t \u0111\u1ed1i \u0111\u1ed1i v\u1edbi qu\u1ef9 c\u1ee7a h\u1ecd th\u00f4ng qua b\u1eb1ng ch\u1ee9ng m\u1eadt m\u00e3 thay v\u00ec tin t\u01b0\u1edfng v\u00e0o c\u00e1c b\u00ean th\u1ee9 ba.<\/p>\n<p>Khi c\u00f4ng ngh\u1ec7 blockchain ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n, c\u00e1c n\u1ec1n t\u1ea3ng to\u00e1n h\u1ecdc c\u1ee7a \u0111\u1ecba ch\u1ec9 Bitcoin v\u1eabn l\u00e0 m\u1ed9t minh ch\u1ee9ng cho c\u00e1ch to\u00e1n h\u1ecdc thu\u1ea7n t\u00fay c\u00f3 th\u1ec3 t\u1ea1o ra c\u00e1c h\u1ec7 th\u1ed1ng th\u1ef1c t\u1ebf, an to\u00e0n ho\u1ea1t \u0111\u1ed9ng tr\u00ean c\u00e1c m\u1ea1ng to\u00e0n c\u1ea7u m\u00e0 kh\u00f4ng c\u1ea7n ki\u1ec3m so\u00e1t trung t\u00e2m. L\u1ea7n t\u1edbi khi b\u1ea1n g\u1eedi ho\u1eb7c nh\u1eadn Bitcoin qua t\u00e0i kho\u1ea3n Pocket Option c\u1ee7a m\u00ecnh, b\u1ea1n s\u1ebd c\u00f3 c\u00e1i nh\u00ecn s\u00e2u s\u1eafc h\u01a1n v\u1ec1 to\u00e1n h\u1ecdc tinh vi \u0111ang ho\u1ea1t \u0111\u1ed9ng ph\u00eda sau \u0111\u1ec3 b\u1ea3o v\u1ec7 giao d\u1ecbch c\u1ee7a b\u1ea1n.<\/p>\n<\/div>\n"},"faq":[{"question":"Ch\u00ednh x\u00e1c th\u00ec \u0111\u1ecba ch\u1ec9 Bitcoin l\u00e0 g\u00ec v\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt?","answer":"M\u1ed9t \u0111\u1ecba ch\u1ec9 Bitcoin l\u00e0 m\u1ed9t chu\u1ed7i k\u00fd t\u1ef1 ch\u1eef v\u00e0 s\u1ed1 d\u00e0i t\u1eeb 26-35 k\u00fd t\u1ef1 \u0111\u01b0\u1ee3c t\u1ea1o ra t\u1eeb m\u1ed9t kh\u00f3a c\u00f4ng khai th\u00f4ng qua m\u1ed9t lo\u1ea1t c\u00e1c h\u00e0m b\u0103m m\u1eadt m\u00e3. V\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt, n\u00f3 \u0111\u1ea1i di\u1ec7n cho h\u00e0m b\u0103m c\u1ee7a m\u1ed9t kh\u00f3a c\u00f4ng khai (trong tr\u01b0\u1eddng h\u1ee3p c\u1ee7a c\u00e1c \u0111\u1ecba ch\u1ec9 P2PKH) ho\u1eb7c k\u1ecbch b\u1ea3n (trong tr\u01b0\u1eddng h\u1ee3p c\u1ee7a c\u00e1c \u0111\u1ecba ch\u1ec9 P2SH) \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a theo \u0111\u1ecbnh d\u1ea1ng Base58Check ho\u1eb7c Bech32. N\u00f3 \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t \u0111\u1ecbnh danh \u0111\u00edch cho c\u00e1c giao d\u1ecbch bitcoin, t\u01b0\u01a1ng t\u1ef1 nh\u01b0 c\u00e1ch m\u1ed9t \u0111\u1ecba ch\u1ec9 email ho\u1ea1t \u0111\u1ed9ng \u0111\u1ec3 nh\u1eadn tin nh\u1eafn."},{"question":"C\u00e1c \u0111\u1ecba ch\u1ec9 Bitcoin an to\u00e0n nh\u01b0 th\u1ebf n\u00e0o tr\u01b0\u1edbc c\u00e1c n\u1ed7 l\u1ef1c t\u1ea5n c\u00f4ng?","answer":"C\u00e1c \u0111\u1ecba ch\u1ec9 Bitcoin c\u1ef1c k\u1ef3 an to\u00e0n tr\u01b0\u1edbc c\u00e1c n\u1ed7 l\u1ef1c t\u1ea5n c\u00f4ng tr\u1ef1c ti\u1ebfp nh\u1edd v\u00e0o n\u1ec1n t\u1ea3ng m\u1eadt m\u00e3 c\u1ee7a ch\u00fang. H\u00e0m b\u0103m 160-bit RIPEMD-160 t\u1ea1o ra m\u1ed9t kh\u00f4ng gian \u0111\u1ecba ch\u1ec9 v\u1edbi 2^160 t\u1ed5 h\u1ee3p c\u00f3 th\u1ec3, khi\u1ebfn cho c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng brute force tr\u1edf n\u00ean kh\u00f4ng kh\u1ea3 thi v\u1ec1 m\u1eb7t to\u00e1n h\u1ecdc. \u0110i\u1ec3m y\u1ebfu l\u1edbn h\u01a1n n\u1eb1m \u1edf s\u1ef1 an to\u00e0n c\u1ee7a kh\u00f3a ri\u00eang t\u01b0, kh\u00f4ng ph\u1ea3i b\u1ea3n th\u00e2n \u0111\u1ecba ch\u1ec9. V\u1edbi s\u1ef1 b\u1ea3o m\u1eadt kh\u00f3a ri\u00eang t\u01b0 \u0111\u00fang c\u00e1ch (v\u00ed ph\u1ea7n c\u1ee9ng, m\u00e1y t\u00ednh kh\u00f4ng k\u1ebft n\u1ed1i m\u1ea1ng), c\u00e1c \u0111\u1ecba ch\u1ec9 Bitcoin cung c\u1ea5p s\u1ef1 b\u1ea3o m\u1eadt m\u1eadt m\u00e3 v\u01b0\u1ee3t tr\u1ed9i h\u01a1n h\u1ea7u h\u1ebft c\u00e1c h\u1ec7 th\u1ed1ng k\u1ef9 thu\u1eadt s\u1ed1 kh\u00e1c."},{"question":"T\u00f4i c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00f9ng m\u1ed9t \u0111\u1ecba ch\u1ec9 Bitcoin cho nhi\u1ec1u giao d\u1ecbch kh\u00f4ng?","answer":"M\u1eb7c d\u00f9 v\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt c\u00f3 th\u1ec3, vi\u1ec7c t\u00e1i s\u1eed d\u1ee5ng c\u00f9ng m\u1ed9t \u0111\u1ecba ch\u1ec9 Bitcoin cho nhi\u1ec1u giao d\u1ecbch b\u1ecb khuy\u1ebfn c\u00e1o kh\u00f4ng n\u00ean v\u00ec l\u00fd do b\u1ea3o m\u1eadt v\u00e0 quy\u1ec1n ri\u00eang t\u01b0. M\u1ed7i l\u1ea7n b\u1ea1n nh\u1eadn m\u1ed9t giao d\u1ecbch v\u00e0o m\u1ed9t \u0111\u1ecba ch\u1ec9, b\u1ea1n ti\u1ebft l\u1ed9 kh\u00f3a c\u00f4ng khai c\u1ee7a \u0111\u1ecba ch\u1ec9 \u0111\u00f3, l\u00e0m gi\u1ea3m nh\u1eb9 kh\u1ea3 n\u0103ng ch\u1ed1ng l\u1ea1i l\u01b0\u1ee3ng t\u1eed c\u1ee7a n\u00f3. Ngo\u00e0i ra, vi\u1ec7c t\u00e1i s\u1eed d\u1ee5ng \u0111\u1ecba ch\u1ec9 t\u1ea1o ra m\u1ed9t l\u1ecbch s\u1eed giao d\u1ecbch li\u00ean k\u1ebft t\u1ea5t c\u1ea3 c\u00e1c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ea1n l\u1ea1i v\u1edbi nhau, l\u00e0m suy gi\u1ea3m quy\u1ec1n ri\u00eang t\u01b0. Th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t l\u00e0 t\u1ea1o m\u1ed9t \u0111\u1ecba ch\u1ec9 m\u1edbi cho m\u1ed7i giao d\u1ecbch, \u0111i\u1ec1u m\u00e0 h\u1ea7u h\u1ebft c\u00e1c v\u00ed hi\u1ec7n \u0111\u1ea1i th\u1ef1c hi\u1ec7n t\u1ef1 \u0111\u1ed9ng."},{"question":"L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 \u0111\u1ecba ch\u1ec9 Bitcoin kh\u00e1c v\u1edbi c\u00e1c \u0111\u1ecba ch\u1ec9 ti\u1ec1n \u0111i\u1ec7n t\u1eed kh\u00e1c?","answer":"C\u00e1c \u0111\u1ecba ch\u1ec9 Bitcoin kh\u00e1c v\u1edbi c\u00e1c \u0111\u1ecba ch\u1ec9 ti\u1ec1n \u0111i\u1ec7n t\u1eed kh\u00e1c ch\u1ee7 y\u1ebfu \u1edf c\u00e1c thu\u1eadt to\u00e1n m\u1eadt m\u00e3 c\u01a1 b\u1ea3n v\u00e0 \u0111\u1ecbnh d\u1ea1ng m\u00e3 h\u00f3a c\u1ee7a ch\u00fang. Trong khi Bitcoin truy\u1ec1n th\u1ed1ng s\u1eed d\u1ee5ng b\u0103m RIPEMD-160 v\u00e0 SHA-256 v\u1edbi m\u00e3 h\u00f3a Base58Check ho\u1eb7c Bech32, c\u00e1c lo\u1ea1i ti\u1ec1n \u0111i\u1ec7n t\u1eed kh\u00e1c c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c thu\u1eadt to\u00e1n kh\u00e1c nhau. V\u00ed d\u1ee5, c\u00e1c \u0111\u1ecba ch\u1ec9 Ethereum \u0111\u01b0\u1ee3c t\u1ea1o tr\u1ef1c ti\u1ebfp t\u1eeb kh\u00f3a c\u00f4ng khai b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng Keccak-256 (m\u1ed9t bi\u1ebfn th\u1ec3 c\u1ee7a SHA-3) m\u00e0 kh\u00f4ng c\u1ea7n ph\u01b0\u01a1ng ph\u00e1p b\u0103m k\u00e9p c\u1ee7a Bitcoin. Ngo\u00e0i ra, c\u00e1c \u0111\u1ecbnh d\u1ea1ng \u0111\u1ecba ch\u1ec9 kh\u00e1c nhau v\u1ec1 m\u1eb7t h\u00ecnh th\u1ee9c - c\u00e1c \u0111\u1ecba ch\u1ec9 Bitcoin th\u01b0\u1eddng b\u1eaft \u0111\u1ea7u v\u1edbi 1, 3, ho\u1eb7c bc1, trong khi c\u00e1c \u0111\u1ecba ch\u1ec9 Ethereum b\u1eaft \u0111\u1ea7u v\u1edbi 0x."},{"question":"\u0110i\u1ec1u g\u00ec x\u1ea3y ra n\u1ebfu t\u00f4i g\u1eedi Bitcoin \u0111\u1ebfn m\u1ed9t \u0111\u1ecba ch\u1ec9 kh\u00f4ng ch\u00ednh x\u00e1c?","answer":"G\u1eedi Bitcoin \u0111\u1ebfn m\u1ed9t \u0111\u1ecba ch\u1ec9 kh\u00f4ng ch\u00ednh x\u00e1c th\u01b0\u1eddng d\u1eabn \u0111\u1ebfn m\u1ea5t v\u0129nh vi\u1ec5n s\u1ed1 ti\u1ec1n, v\u00ec c\u00e1c giao d\u1ecbch kh\u00f4ng th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1ea3o ng\u01b0\u1ee3c n\u1ebfu kh\u00f4ng c\u00f3 kh\u00f3a ri\u00eang ki\u1ec3m so\u00e1t \u0111\u1ecba ch\u1ec9 nh\u1eadn. Tuy nhi\u00ean, \u0111\u1ecbnh d\u1ea1ng \u0111\u1ecba ch\u1ec9 c\u1ee7a Bitcoin bao g\u1ed3m x\u00e1c minh t\u1ed5ng ki\u1ec3m tra, \u0111i\u1ec1u n\u00e0y l\u00e0m cho vi\u1ec7c v\u00f4 t\u00ecnh t\u1ea1o ra m\u1ed9t \u0111\u1ecba ch\u1ec9 h\u1ee3p l\u1ec7 nh\u01b0ng kh\u00f4ng ch\u00ednh x\u00e1c th\u00f4ng qua l\u1ed7i \u0111\u00e1nh m\u00e1y l\u00e0 r\u1ea5t kh\u00f3 x\u1ea3y ra. H\u1ea7u h\u1ebft ph\u1ea7n m\u1ec1m v\u00ed v\u00e0 c\u00e1c n\u1ec1n t\u1ea3ng nh\u01b0 Pocket Option x\u00e1c minh t\u00ednh h\u1ee3p l\u1ec7 c\u1ee7a \u0111\u1ecba ch\u1ec9 tr\u01b0\u1edbc khi cho ph\u00e9p giao d\u1ecbch. Trong tr\u01b0\u1eddng h\u1ee3p c\u1ef1c k\u1ef3 hi\u1ebfm g\u1eb7p khi g\u1eedi \u0111\u1ebfn m\u1ed9t \u0111\u1ecba ch\u1ec9 h\u1ee3p l\u1ec7 m\u00e0 kh\u00f4ng ai ki\u1ec3m so\u00e1t, Bitcoin s\u1ebd kh\u00f4ng th\u1ec3 chi ti\u00eau \u0111\u01b0\u1ee3c v\u0129nh vi\u1ec5n - th\u1ef1c t\u1ebf l\u00e0 b\u1ecb lo\u1ea1i b\u1ecf kh\u1ecfi l\u01b0u th\u00f4ng."}],"faq_source":{"label":"FAQ","type":"repeater","formatted_value":[{"question":"Ch\u00ednh x\u00e1c th\u00ec \u0111\u1ecba ch\u1ec9 Bitcoin l\u00e0 g\u00ec v\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt?","answer":"M\u1ed9t \u0111\u1ecba ch\u1ec9 Bitcoin l\u00e0 m\u1ed9t chu\u1ed7i k\u00fd t\u1ef1 ch\u1eef v\u00e0 s\u1ed1 d\u00e0i t\u1eeb 26-35 k\u00fd t\u1ef1 \u0111\u01b0\u1ee3c t\u1ea1o ra t\u1eeb m\u1ed9t kh\u00f3a c\u00f4ng khai th\u00f4ng qua m\u1ed9t lo\u1ea1t c\u00e1c h\u00e0m b\u0103m m\u1eadt m\u00e3. V\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt, n\u00f3 \u0111\u1ea1i di\u1ec7n cho h\u00e0m b\u0103m c\u1ee7a m\u1ed9t kh\u00f3a c\u00f4ng khai (trong tr\u01b0\u1eddng h\u1ee3p c\u1ee7a c\u00e1c \u0111\u1ecba ch\u1ec9 P2PKH) ho\u1eb7c k\u1ecbch b\u1ea3n (trong tr\u01b0\u1eddng h\u1ee3p c\u1ee7a c\u00e1c \u0111\u1ecba ch\u1ec9 P2SH) \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a theo \u0111\u1ecbnh d\u1ea1ng Base58Check ho\u1eb7c Bech32. N\u00f3 \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t \u0111\u1ecbnh danh \u0111\u00edch cho c\u00e1c giao d\u1ecbch bitcoin, t\u01b0\u01a1ng t\u1ef1 nh\u01b0 c\u00e1ch m\u1ed9t \u0111\u1ecba ch\u1ec9 email ho\u1ea1t \u0111\u1ed9ng \u0111\u1ec3 nh\u1eadn tin nh\u1eafn."},{"question":"C\u00e1c \u0111\u1ecba ch\u1ec9 Bitcoin an to\u00e0n nh\u01b0 th\u1ebf n\u00e0o tr\u01b0\u1edbc c\u00e1c n\u1ed7 l\u1ef1c t\u1ea5n c\u00f4ng?","answer":"C\u00e1c \u0111\u1ecba ch\u1ec9 Bitcoin c\u1ef1c k\u1ef3 an to\u00e0n tr\u01b0\u1edbc c\u00e1c n\u1ed7 l\u1ef1c t\u1ea5n c\u00f4ng tr\u1ef1c ti\u1ebfp nh\u1edd v\u00e0o n\u1ec1n t\u1ea3ng m\u1eadt m\u00e3 c\u1ee7a ch\u00fang. H\u00e0m b\u0103m 160-bit RIPEMD-160 t\u1ea1o ra m\u1ed9t kh\u00f4ng gian \u0111\u1ecba ch\u1ec9 v\u1edbi 2^160 t\u1ed5 h\u1ee3p c\u00f3 th\u1ec3, khi\u1ebfn cho c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng brute force tr\u1edf n\u00ean kh\u00f4ng kh\u1ea3 thi v\u1ec1 m\u1eb7t to\u00e1n h\u1ecdc. \u0110i\u1ec3m y\u1ebfu l\u1edbn h\u01a1n n\u1eb1m \u1edf s\u1ef1 an to\u00e0n c\u1ee7a kh\u00f3a ri\u00eang t\u01b0, kh\u00f4ng ph\u1ea3i b\u1ea3n th\u00e2n \u0111\u1ecba ch\u1ec9. V\u1edbi s\u1ef1 b\u1ea3o m\u1eadt kh\u00f3a ri\u00eang t\u01b0 \u0111\u00fang c\u00e1ch (v\u00ed ph\u1ea7n c\u1ee9ng, m\u00e1y t\u00ednh kh\u00f4ng k\u1ebft n\u1ed1i m\u1ea1ng), c\u00e1c \u0111\u1ecba ch\u1ec9 Bitcoin cung c\u1ea5p s\u1ef1 b\u1ea3o m\u1eadt m\u1eadt m\u00e3 v\u01b0\u1ee3t tr\u1ed9i h\u01a1n h\u1ea7u h\u1ebft c\u00e1c h\u1ec7 th\u1ed1ng k\u1ef9 thu\u1eadt s\u1ed1 kh\u00e1c."},{"question":"T\u00f4i c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00f9ng m\u1ed9t \u0111\u1ecba ch\u1ec9 Bitcoin cho nhi\u1ec1u giao d\u1ecbch kh\u00f4ng?","answer":"M\u1eb7c d\u00f9 v\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt c\u00f3 th\u1ec3, vi\u1ec7c t\u00e1i s\u1eed d\u1ee5ng c\u00f9ng m\u1ed9t \u0111\u1ecba ch\u1ec9 Bitcoin cho nhi\u1ec1u giao d\u1ecbch b\u1ecb khuy\u1ebfn c\u00e1o kh\u00f4ng n\u00ean v\u00ec l\u00fd do b\u1ea3o m\u1eadt v\u00e0 quy\u1ec1n ri\u00eang t\u01b0. M\u1ed7i l\u1ea7n b\u1ea1n nh\u1eadn m\u1ed9t giao d\u1ecbch v\u00e0o m\u1ed9t \u0111\u1ecba ch\u1ec9, b\u1ea1n ti\u1ebft l\u1ed9 kh\u00f3a c\u00f4ng khai c\u1ee7a \u0111\u1ecba ch\u1ec9 \u0111\u00f3, l\u00e0m gi\u1ea3m nh\u1eb9 kh\u1ea3 n\u0103ng ch\u1ed1ng l\u1ea1i l\u01b0\u1ee3ng t\u1eed c\u1ee7a n\u00f3. Ngo\u00e0i ra, vi\u1ec7c t\u00e1i s\u1eed d\u1ee5ng \u0111\u1ecba ch\u1ec9 t\u1ea1o ra m\u1ed9t l\u1ecbch s\u1eed giao d\u1ecbch li\u00ean k\u1ebft t\u1ea5t c\u1ea3 c\u00e1c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ea1n l\u1ea1i v\u1edbi nhau, l\u00e0m suy gi\u1ea3m quy\u1ec1n ri\u00eang t\u01b0. Th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t l\u00e0 t\u1ea1o m\u1ed9t \u0111\u1ecba ch\u1ec9 m\u1edbi cho m\u1ed7i giao d\u1ecbch, \u0111i\u1ec1u m\u00e0 h\u1ea7u h\u1ebft c\u00e1c v\u00ed hi\u1ec7n \u0111\u1ea1i th\u1ef1c hi\u1ec7n t\u1ef1 \u0111\u1ed9ng."},{"question":"L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 \u0111\u1ecba ch\u1ec9 Bitcoin kh\u00e1c v\u1edbi c\u00e1c \u0111\u1ecba ch\u1ec9 ti\u1ec1n \u0111i\u1ec7n t\u1eed kh\u00e1c?","answer":"C\u00e1c \u0111\u1ecba ch\u1ec9 Bitcoin kh\u00e1c v\u1edbi c\u00e1c \u0111\u1ecba ch\u1ec9 ti\u1ec1n \u0111i\u1ec7n t\u1eed kh\u00e1c ch\u1ee7 y\u1ebfu \u1edf c\u00e1c thu\u1eadt to\u00e1n m\u1eadt m\u00e3 c\u01a1 b\u1ea3n v\u00e0 \u0111\u1ecbnh d\u1ea1ng m\u00e3 h\u00f3a c\u1ee7a ch\u00fang. Trong khi Bitcoin truy\u1ec1n th\u1ed1ng s\u1eed d\u1ee5ng b\u0103m RIPEMD-160 v\u00e0 SHA-256 v\u1edbi m\u00e3 h\u00f3a Base58Check ho\u1eb7c Bech32, c\u00e1c lo\u1ea1i ti\u1ec1n \u0111i\u1ec7n t\u1eed kh\u00e1c c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c thu\u1eadt to\u00e1n kh\u00e1c nhau. V\u00ed d\u1ee5, c\u00e1c \u0111\u1ecba ch\u1ec9 Ethereum \u0111\u01b0\u1ee3c t\u1ea1o tr\u1ef1c ti\u1ebfp t\u1eeb kh\u00f3a c\u00f4ng khai b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng Keccak-256 (m\u1ed9t bi\u1ebfn th\u1ec3 c\u1ee7a SHA-3) m\u00e0 kh\u00f4ng c\u1ea7n ph\u01b0\u01a1ng ph\u00e1p b\u0103m k\u00e9p c\u1ee7a Bitcoin. Ngo\u00e0i ra, c\u00e1c \u0111\u1ecbnh d\u1ea1ng \u0111\u1ecba ch\u1ec9 kh\u00e1c nhau v\u1ec1 m\u1eb7t h\u00ecnh th\u1ee9c - c\u00e1c \u0111\u1ecba ch\u1ec9 Bitcoin th\u01b0\u1eddng b\u1eaft \u0111\u1ea7u v\u1edbi 1, 3, ho\u1eb7c bc1, trong khi c\u00e1c \u0111\u1ecba ch\u1ec9 Ethereum b\u1eaft \u0111\u1ea7u v\u1edbi 0x."},{"question":"\u0110i\u1ec1u g\u00ec x\u1ea3y ra n\u1ebfu t\u00f4i g\u1eedi Bitcoin \u0111\u1ebfn m\u1ed9t \u0111\u1ecba ch\u1ec9 kh\u00f4ng ch\u00ednh x\u00e1c?","answer":"G\u1eedi Bitcoin \u0111\u1ebfn m\u1ed9t \u0111\u1ecba ch\u1ec9 kh\u00f4ng ch\u00ednh x\u00e1c th\u01b0\u1eddng d\u1eabn \u0111\u1ebfn m\u1ea5t v\u0129nh vi\u1ec5n s\u1ed1 ti\u1ec1n, v\u00ec c\u00e1c giao d\u1ecbch kh\u00f4ng th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1ea3o ng\u01b0\u1ee3c n\u1ebfu kh\u00f4ng c\u00f3 kh\u00f3a ri\u00eang ki\u1ec3m so\u00e1t \u0111\u1ecba ch\u1ec9 nh\u1eadn. Tuy nhi\u00ean, \u0111\u1ecbnh d\u1ea1ng \u0111\u1ecba ch\u1ec9 c\u1ee7a Bitcoin bao g\u1ed3m x\u00e1c minh t\u1ed5ng ki\u1ec3m tra, \u0111i\u1ec1u n\u00e0y l\u00e0m cho vi\u1ec7c v\u00f4 t\u00ecnh t\u1ea1o ra m\u1ed9t \u0111\u1ecba ch\u1ec9 h\u1ee3p l\u1ec7 nh\u01b0ng kh\u00f4ng ch\u00ednh x\u00e1c th\u00f4ng qua l\u1ed7i \u0111\u00e1nh m\u00e1y l\u00e0 r\u1ea5t kh\u00f3 x\u1ea3y ra. H\u1ea7u h\u1ebft ph\u1ea7n m\u1ec1m v\u00ed v\u00e0 c\u00e1c n\u1ec1n t\u1ea3ng nh\u01b0 Pocket Option x\u00e1c minh t\u00ednh h\u1ee3p l\u1ec7 c\u1ee7a \u0111\u1ecba ch\u1ec9 tr\u01b0\u1edbc khi cho ph\u00e9p giao d\u1ecbch. Trong tr\u01b0\u1eddng h\u1ee3p c\u1ef1c k\u1ef3 hi\u1ebfm g\u1eb7p khi g\u1eedi \u0111\u1ebfn m\u1ed9t \u0111\u1ecba ch\u1ec9 h\u1ee3p l\u1ec7 m\u00e0 kh\u00f4ng ai ki\u1ec3m so\u00e1t, Bitcoin s\u1ebd kh\u00f4ng th\u1ec3 chi ti\u00eau \u0111\u01b0\u1ee3c v\u0129nh vi\u1ec5n - th\u1ef1c t\u1ebf l\u00e0 b\u1ecb lo\u1ea1i b\u1ecf kh\u1ecfi l\u01b0u th\u00f4ng."}]}},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.8 (Yoast SEO v27.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>\u0110\u1ecba ch\u1ec9 Bitcoin l\u00e0 g\u00ec: Ki\u1ebfn tr\u00fac M\u1eadt m\u00e3 H\u1ed7 tr\u1ee3 Quy\u1ec1n s\u1edf h\u1eefu Ti\u1ec1n t\u1ec7 K\u1ef9 thu\u1eadt s\u1ed1<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/pocketoption.com\/blog\/vt\/knowledge-base\/learning\/what-is-a-bitcoin-address\/\" \/>\n<meta property=\"og:locale\" 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content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Igor OK\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/pocketoption.com\/blog\/vt\/knowledge-base\/learning\/what-is-a-bitcoin-address\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/pocketoption.com\/blog\/vt\/knowledge-base\/learning\/what-is-a-bitcoin-address\/\"},\"author\":{\"name\":\"Igor OK\",\"@id\":\"https:\/\/pocketoption.com\/blog\/vt\/#\/schema\/person\/05fda70241a3f566579f07d29b86abe1\"},\"headline\":\"\u0110\u1ecba ch\u1ec9 Bitcoin l\u00e0 g\u00ec: Ki\u1ebfn tr\u00fac M\u1eadt m\u00e3 H\u1ed7 tr\u1ee3 Quy\u1ec1n s\u1edf h\u1eefu Ti\u1ec1n t\u1ec7 K\u1ef9 thu\u1eadt 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