{"id":8,"date":"2026-07-25T09:36:21","date_gmt":"2026-07-25T01:36:21","guid":{"rendered":"https:\/\/bitcointoolkit.top\/knowledge\/how-bitcoin-transaction-fees-work\/"},"modified":"2026-08-05T06:56:40","modified_gmt":"2026-08-04T22:56:40","slug":"how-bitcoin-transaction-fees-work","status":"publish","type":"post","link":"https:\/\/bitcointoolkit.top\/vi\/learn\/how-bitcoin-transaction-fees-work\/","title":{"rendered":"C\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a ph\u00ed giao d\u1ecbch Bitcoin"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Hai kho\u1ea3n thanh to\u00e1n Bitcoin c\u00f3 th\u1ec3 g\u1eedi c\u00f9ng m\u1ed9t s\u1ed1 ti\u1ec1n nh\u01b0ng tr\u1ea3 ph\u00ed m\u1ea1ng r\u1ea5t kh\u00e1c nhau. S\u1ef1 kh\u00e1c bi\u1ec7t kh\u00f4ng ph\u1ea3i l\u00e0 gi\u00e1 tr\u1ecb \u0111\u01b0\u1ee3c chuy\u1ec3n. \u0110\u00f3 l\u00e0 giao d\u1ecbch m\u00e0 v\u00ed ph\u1ea3i x\u00e2y d\u1ef1ng: \u0111\u1ea7u ra ch\u01b0a chi ti\u00eau n\u00e0o tr\u1edf th\u00e0nh \u0111\u1ea7u v\u00e0o, bao nhi\u00eau \u0111\u1ea7u ra m\u1edbi \u0111\u01b0\u1ee3c t\u1ea1o, lo\u1ea1i script n\u00e0o li\u00ean quan, bao nhi\u00eau d\u1eef li\u1ec7u n\u1ed1i ti\u1ebfp m\u00e0 giao d\u1ecbch \u0111\u00e3 k\u00fd ch\u1ee9a, v\u00e0 m\u1ee9c ph\u00ed m\u00e0 v\u00ed \u00e1p d\u1ee5ng cho k\u00edch th\u01b0\u1edbc \u1ea3o \u0111\u00f3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 l\u00fd do t\u1ea1i sao v\u00ed c\u00f3 th\u1ec3 hi\u1ec3n th\u1ecb m\u1ed9t m\u1ee9c ph\u00ed tr\u01b0\u1edbc khi ch\u1ecdn coin v\u00e0 m\u1ed9t m\u1ee9c kh\u00e1c sau khi c\u00e1c \u0111\u1ea7u v\u00e0o cu\u1ed1i c\u00f9ng \u0111\u01b0\u1ee3c ch\u1ecdn. \u0110\u00f3 c\u0169ng l\u00e0 l\u00fd do t\u1ea1i sao g\u1eedi 0,01 BTC c\u00f3 th\u1ec3 t\u1ed1n nhi\u1ec1u h\u01a1n g\u1eedi 1 BTC. Bitcoin kh\u00f4ng t\u00ednh ph\u00ed theo ph\u1ea7n tr\u0103m c\u1ee7a kho\u1ea3n thanh to\u00e1n. N\u00f3 \u0111\u1ecbnh gi\u00e1 kh\u00f4ng gian kh\u1ed1i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ph\u00e9p t\u00ednh tu\u00e2n theo m\u1ed9t \u0111\u01b0\u1eddng d\u1eabn li\u00ean t\u1ee5c:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Inputs and outputs\n\u2192 serialized transaction data\n\u2192 transaction Weight\n\u2192 virtual size in vB\n\u2192 fee rate in sat\/vB\n\u2192 total fee in sats<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Hi\u1ec3u \u0111\u01b0\u1eddng d\u1eabn \u0111\u00f3 cho ph\u00e9p b\u1ea1n \u0111\u1ecdc b\u1ea3n xem tr\u01b0\u1edbc ph\u00ed c\u1ee7a v\u00ed m\u00e0 kh\u00f4ng nh\u1ea7m l\u1eabn s\u1ed1 ti\u1ec1n thanh to\u00e1n, m\u1ee9c ph\u00ed v\u00e0 ph\u00ed cu\u1ed1i c\u00f9ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Ph\u00ed Kh\u00f4ng Ph\u1ea3i L\u00e0 Ph\u1ea7n Tr\u0103m<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ph\u00ed giao d\u1ecbch Bitcoin l\u00e0 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa t\u1ed5ng gi\u00e1 tr\u1ecb c\u1ee7a c\u00e1c \u0111\u1ea7u v\u00e0o v\u00e0 t\u1ed5ng gi\u00e1 tr\u1ecb \u0111\u01b0\u1ee3c g\u00e1n cho c\u00e1c \u0111\u1ea7u ra:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Ph\u00ed giao d\u1ecbch\n=\nT\u1ed5ng gi\u00e1 tr\u1ecb \u0111\u1ea7u v\u00e0o\n\u2212\nT\u1ed5ng gi\u00e1 tr\u1ecb \u0111\u1ea7u ra<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Gi\u1ea3 s\u1eed m\u1ed9t v\u00ed chi ti\u00eau m\u1ed9t \u0111\u1ea7u v\u00e0o tr\u1ecb gi\u00e1 120.000 sats. N\u00f3 t\u1ea1o ra m\u1ed9t \u0111\u1ea7u ra thanh to\u00e1n 100.000 sats v\u00e0 m\u1ed9t \u0111\u1ea7u ra ti\u1ec1n th\u1eeba 18.500 sats. 1.500 sats c\u00f2n l\u1ea1i l\u00e0 ph\u00ed giao d\u1ecbch:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>120.000 sats\n\u2212 100.000 sats\n\u2212 18.500 sats\n= 1.500 sats ph\u00ed<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ea1ng l\u01b0\u1edbi kh\u00f4ng r\u00fat ph\u00ed \u0111\u00f3 m\u1ed9t c\u00e1ch ri\u00eang bi\u1ec7t t\u1eeb t\u00e0i kho\u1ea3n. Ph\u00ed l\u00e0 gi\u00e1 tr\u1ecb \u0111\u1ea7u v\u00e0o m\u00e0 giao d\u1ecbch kh\u00f4ng g\u00e1n cho m\u1ed9t \u0111\u1ea7u ra m\u1edbi.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t v\u00ed c\u00f3 th\u1ec3 hi\u1ec3n th\u1ecb m\u1ed9t s\u1ed1 con s\u1ed1 li\u00ean quan tr\u00ean c\u00f9ng m\u1ed9t m\u00e0n h\u00ecnh. Ch\u00fang m\u00f4 t\u1ea3 c\u00e1c ph\u1ea7n kh\u00e1c nhau c\u1ee7a giao d\u1ecbch v\u00e0 kh\u00f4ng n\u00ean so s\u00e1nh n\u1ebfu kh\u00f4ng c\u00f3 \u0111\u01a1n v\u1ecb c\u1ee7a ch\u00fang.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Gi\u00e1 tr\u1ecb hi\u1ec3n th\u1ecb<\/th><th>\u00dd ngh\u0129a c\u1ee7a n\u00f3<\/th><th>V\u00ed d\u1ee5<\/th><\/tr><\/thead><tbody><tr><td>S\u1ed1 ti\u1ec1n ng\u01b0\u1eddi nh\u1eadn<\/td><td>Bitcoin \u0111\u01b0\u1ee3c g\u00e1n cho \u0111\u1ea7u ra d\u00e0nh cho ng\u01b0\u1eddi nh\u1eadn d\u1ef1 ki\u1ebfn<\/td><td>100.000 sats<\/td><\/tr><tr><td>T\u1ed5ng ph\u00ed<\/td><td>Gi\u00e1 tr\u1ecb \u0111\u1ea7u v\u00e0o kh\u00f4ng \u0111\u01b0\u1ee3c g\u00e1n cho b\u1ea5t k\u1ef3 \u0111\u1ea7u ra n\u00e0o<\/td><td>1.500 sats<\/td><\/tr><tr><td>T\u1ef7 l\u1ec7 ph\u00ed<\/td><td>Gi\u00e1 \u00e1p d\u1ee5ng cho m\u1ed7i byte \u1ea3o<\/td><td>10 sat\/vB<\/td><\/tr><tr><td>K\u00edch th\u01b0\u1edbc \u1ea3o<\/td><td>Weight k\u00edch th\u01b0\u1edbc giao d\u1ecbch d\u00f9ng \u0111\u1ec3 so s\u00e1nh ph\u00ed<\/td><td>150 vB<\/td><\/tr><tr><td>T\u1ed5ng s\u1ed1 ti\u1ec1n ghi n\u1ee3 t\u1eeb v\u00ed<\/td><td>S\u1ed1 ti\u1ec1n ng\u01b0\u1eddi nh\u1eadn c\u1ed9ng v\u1edbi ph\u00ed khi ng\u01b0\u1eddi g\u1eedi thanh to\u00e1n ph\u00ed ri\u00eang<\/td><td>101.500 sats<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1ed1 ti\u1ec1n thanh to\u00e1n v\u00e0 t\u1ed5ng ph\u00ed \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng sats ho\u1eb7c BTC. T\u1ef7 l\u1ec7 ph\u00ed \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng sat\/vB. K\u00edch th\u01b0\u1edbc \u1ea3o \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng vB. N\u1ebfu nh\u1eefng nh\u00e3n n\u00e0y kh\u00f4ng quen thu\u1ed9c, tr\u01b0\u1edbc ti\u00ean h\u00e3y \u0111\u1ecdc <a href=\"https:\/\/bitcointoolkit.top\/vi\/learn\/what-is-a-satoshi\/\">\u00fd ngh\u0129a c\u1ee7a satoshi trong v\u00ed v\u00e0 hi\u1ec3n th\u1ecb ph\u00ed<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0110\u1ea7u v\u00e0o v\u00e0 \u0110\u1ea7u ra X\u00e1c \u0111\u1ecbnh K\u00edch th\u01b0\u1edbc<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u0110\u1ea7u v\u00e0o ti\u00eau x\u00e0i UTXO hi\u1ec7n c\u00f3<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ed Bitcoin kh\u00f4ng chi ti\u00eau t\u1eeb m\u1ed9t s\u1ed1 d\u01b0 t\u00e0i kho\u1ea3n. Ch\u00fang chi ti\u00eau c\u00e1c \u0111\u1ea7u ra giao d\u1ecbch ch\u01b0a chi ti\u00eau hi\u1ec7n c\u00f3, th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 UTXO. M\u1ed7i UTXO \u0111\u01b0\u1ee3c ch\u1ecdn tr\u1edf th\u00e0nh m\u1ed9t \u0111\u1ea7u v\u00e0o trong giao d\u1ecbch m\u1edbi.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t \u0111\u1ea7u v\u00e0o x\u00e1c \u0111\u1ecbnh m\u1ed9t \u0111\u1ea7u ra tr\u01b0\u1edbc \u0111\u00f3 v\u00e0 cung c\u1ea5p d\u1eef li\u1ec7u c\u1ea7n thi\u1ebft \u0111\u1ec3 satisfy c\u00e1c \u0111i\u1ec1u ki\u1ec7n chi ti\u00eau c\u1ee7a \u0111\u1ea7u ra \u0111\u00f3. T\u00f9y thu\u1ed9c v\u00e0o lo\u1ea1i script, m\u1ed9t s\u1ed1 d\u1eef li\u1ec7u \u1ee7y quy\u1ec1n xu\u1ea5t hi\u1ec7n trong tu\u1ea7n t\u1ef1 h\u00f3a giao d\u1ecbch c\u01a1 b\u1ea3n v\u00e0 m\u1ed9t s\u1ed1 xu\u1ea5t hi\u1ec7n trong witness.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1ed1 d\u01b0 hi\u1ec3n th\u1ecb c\u00f3 th\u1ec3 che gi\u1ea5u c\u1ea5u tr\u00fac quan tr\u1ecdng \u0111\u1ed1i v\u1edbi ph\u00ed. M\u1ed9t v\u00ed hi\u1ec3n th\u1ecb 500.000 sats c\u00f3 th\u1ec3 ki\u1ec3m so\u00e1t:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>m\u1ed9t UTXO tr\u1ecb gi\u00e1 500.000 sats;<\/li>\n\n\n\n<li>n\u0103m UTXO m\u1ed7i c\u00e1i tr\u1ecb gi\u00e1 100.000 sats;<\/li>\n\n\n\n<li>ho\u1eb7c n\u0103m m\u01b0\u01a1i UTXO m\u1ed7i c\u00e1i tr\u1ecb gi\u00e1 10.000 sats.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u1ea3 ba v\u00ed \u0111\u1ec1u hi\u1ec3n th\u1ecb t\u1ed5ng s\u1ed1 d\u01b0 gi\u1ed1ng nhau. Chi ti\u00eau t\u1eeb ch\u00fang kh\u00f4ng t\u1ea1o ra giao d\u1ecbch gi\u1ed1ng nhau. Nhi\u1ec1u UTXO \u0111\u01b0\u1ee3c ch\u1ecdn th\u01b0\u1eddng c\u00f3 ngh\u0129a l\u00e0 nhi\u1ec1u \u0111\u1ea7u v\u00e0o h\u01a1n, v\u00e0 m\u1ed7i \u0111\u1ea7u v\u00e0o b\u1ed5 sung mang th\u00eam outpoint, tr\u01b0\u1eddng sequence, d\u1eef li\u1ec7u script ho\u1eb7c witness, v\u00e0 ti\u1ec1n t\u1ed1 \u0111\u1ed9 d\u00e0i v\u00e0o giao d\u1ecbch \u0111\u01b0\u1ee3c tu\u1ea7n t\u1ef1 h\u00f3a.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t kho\u1ea3n thanh to\u00e1n 50.000-sat \u0111\u01b0\u1ee3c t\u00e0i tr\u1ee3 b\u1edfi m\u1ed9t UTXO ph\u00f9 h\u1ee3p do \u0111\u00f3 c\u00f3 th\u1ec3 nh\u1ecf h\u01a1n so v\u1edbi c\u00f9ng m\u1ed9t kho\u1ea3n thanh to\u00e1n \u0111\u01b0\u1ee3c t\u00e0i tr\u1ee3 b\u1edfi t\u00e1m UTXO nh\u1ecf. Vi\u1ec7c ch\u1ecdn coin c\u0169ng thay \u0111\u1ed5i quy\u1ec1n ri\u00eang t\u01b0 v\u00e0 t\u1eadp h\u1ee3p UTXO trong t\u01b0\u01a1ng lai c\u1ee7a v\u00ed. \u0110\u1ec3 so s\u00e1nh chi ph\u00ed g\u1ed9p UTXO ngay b\u00e2y gi\u1edd v\u1edbi vi\u1ec7c chi ti\u00eau ch\u00fang ri\u00eang l\u1ebb sau n\u00e0y, h\u00e3y s\u1eed d\u1ee5ng <a href=\"https:\/\/bitcointoolkit.top\/vi\/tools\/bitcoin-utxo-consolidation-calculator\/\">M\u00e1y t\u00ednh g\u1ed9p UTXO Bitcoin<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u0110\u1ea7u ra ng\u01b0\u1eddi nh\u1eadn v\u00e0 ti\u1ec1n thay \u0111\u1ed5i<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t \u0111\u1ea7u ra giao d\u1ecbch ch\u1ee9a gi\u00e1 tr\u1ecb s\u1ed1 nguy\u00ean t\u00ednh b\u1eb1ng satoshi v\u00e0 m\u1ed9t script kh\u00f3a. Kho\u1ea3n thanh to\u00e1n cho ng\u01b0\u1eddi nh\u1eadn l\u00e0 m\u1ed9t \u0111\u1ea7u ra. Ti\u1ec1n th\u1eeba tr\u1ea3 l\u1ea1i cho ng\u01b0\u1eddi g\u1eedi th\u01b0\u1eddng l\u00e0 m\u1ed9t \u0111\u1ea7u ra kh\u00e1c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu m\u1ed9t v\u00ed ch\u1ecdn m\u1ed9t UTXO 120.000-sat \u0111\u1ec3 th\u1ef1c hi\u1ec7n thanh to\u00e1n 100.000-sat, n\u00f3 th\u01b0\u1eddng kh\u00f4ng th\u1ec3 chi ti\u00eau ch\u1ec9 m\u1ed9t ph\u1ea7n c\u1ee7a UTXO \u0111\u00f3. Giao d\u1ecbch m\u1edbi ti\u00eau th\u1ee5 to\u00e0n b\u1ed9 \u0111\u1ea7u ra. Sau khi ph\u00ed \u0111\u01b0\u1ee3c t\u00ednh, gi\u00e1 tr\u1ecb kh\u00f4ng d\u00f9ng \u0111\u1ebfn s\u1ebd tr\u1ea3 v\u1ec1 m\u1ed9t \u0111\u1ea7u ra ti\u1ec1n th\u1eeba do v\u00ed ki\u1ec3m so\u00e1t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Do \u0111\u00f3, m\u1ed9t kho\u1ea3n thanh to\u00e1n \u0111i\u1ec3n h\u00ecnh c\u00f3 th\u1ec3 ch\u1ee9a m\u1ed9t ho\u1eb7c nhi\u1ec1u \u0111\u1ea7u v\u00e0o, m\u1ed9t \u0111\u1ea7u ra ng\u01b0\u1eddi nh\u1eadn, m\u1ed9t \u0111\u1ea7u ra ti\u1ec1n th\u1eeba v\u00e0 c\u00e1c tr\u01b0\u1eddng c\u1ed1 \u0111\u1ecbnh nh\u01b0 version v\u00e0 locktime. N\u00f3 c\u0169ng ch\u1ee9a s\u1ed1 l\u01b0\u1ee3ng \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra, v\u00e0 m\u1ed7i \u0111\u1ea7u v\u00e0o c\u00f3 gi\u00e1 tr\u1ecb sequence ri\u00eang.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Th\u00eam m\u1ed9t ng\u01b0\u1eddi nh\u1eadn kh\u00e1c s\u1ebd th\u00eam m\u1ed9t \u0111\u1ea7u ra. Th\u00eam ti\u1ec1n th\u1eeba c\u0169ng th\u00eam m\u1ed9t \u0111\u1ea7u ra. M\u1ed7i \u0111\u1ea7u ra l\u00e0m t\u0103ng k\u00edch th\u01b0\u1edbc giao d\u1ecbch, m\u1eb7c d\u00f9 m\u1ed9t \u0111\u1ea7u v\u00e0o ch\u1eef k\u00fd \u0111\u01a1n th\u00f4ng th\u01b0\u1eddng th\u01b0\u1eddng th\u00eam k\u00edch th\u01b0\u1edbc \u1ea3o nhi\u1ec1u h\u01a1n m\u1ed9t \u0111\u1ea7u ra th\u00f4ng th\u01b0\u1eddng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t v\u00ed c\u00f3 th\u1ec3 tr\u00e1nh ti\u1ec1n th\u1eeba khi gi\u00e1 tr\u1ecb \u0111\u1ea7u v\u00e0o \u0111\u01b0\u1ee3c ch\u1ecdn kh\u1edbp ch\u1eb7t ch\u1ebd v\u1edbi kho\u1ea3n thanh to\u00e1n c\u1ed9ng ph\u00ed. N\u00f3 c\u0169ng c\u00f3 th\u1ec3 th\u00eam m\u1ed9t ph\u1ea7n d\u01b0 r\u1ea5t nh\u1ecf v\u00e0o ph\u00ed thay v\u00ec t\u1ea1o m\u1ed9t \u0111\u1ea7u ra ti\u1ec1n th\u1eeba kh\u00f4ng kinh t\u1ebf. Quy\u1ebft \u0111\u1ecbnh \u0111\u00f3 ph\u1ee5 thu\u1ed9c v\u00e0o vi\u1ec7c ch\u1ecdn coin v\u00e0 c\u00e1c quy t\u1eafc ch\u00ednh s\u00e1ch c\u1ee7a v\u00ed, \u0111\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao \u201cm\u1ed9t kho\u1ea3n thanh to\u00e1n\u201d kh\u00f4ng \u0111\u1ee7 th\u00f4ng tin \u0111\u1ec3 t\u00e1i t\u1ea1o m\u1ed9t kho\u1ea3n ph\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Bytes, Weight v\u00e0 vSize<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c giao d\u1ecbch Bitcoin \u0111\u01b0\u1ee3c tu\u1ea7n t\u1ef1 h\u00f3a th\u00e0nh bytes. C\u1ea5u tr\u00fac th\u00f4 bao g\u1ed3m version, s\u1ed1 l\u01b0\u1ee3ng \u0111\u1ea7u v\u00e0o, \u0111\u1ea7u v\u00e0o, s\u1ed1 l\u01b0\u1ee3ng \u0111\u1ea7u ra, \u0111\u1ea7u ra v\u00e0 locktime. C\u00e1c giao d\u1ecbch SegWit c\u0169ng bao g\u1ed3m marker, flag v\u00e0 c\u00e1c tr\u01b0\u1eddng witness.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u01b0\u1edbc SegWit, vi\u1ec7c so s\u00e1nh ph\u00ed th\u01b0\u1eddng \u0111\u1ec1 c\u1eadp tr\u1ef1c ti\u1ebfp \u0111\u1ebfn bytes giao d\u1ecbch. BIP 141 \u0111\u00e3 gi\u1edbi thi\u1ec7u transaction Weight \u0111\u1ec3 d\u1eef li\u1ec7u witness c\u00f3 th\u1ec3 \u0111\u00f3ng g\u00f3p kh\u00e1c v\u1edbi d\u1eef li\u1ec7u kh\u00f4ng ph\u1ea3i witness.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">BIP 141 \u0111\u1ecbnh ngh\u0129a Weight nh\u01b0 sau:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Transaction Weight\n=\nK\u00edch th\u01b0\u1edbc giao d\u1ecbch c\u01a1 b\u1ea3n \u00d7 3\n+\nT\u1ed5ng k\u00edch th\u01b0\u1edbc giao d\u1ecbch<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed1i quan h\u1ec7 t\u01b0\u01a1ng t\u1ef1 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c vi\u1ebft l\u00e0:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Transaction Weight\n=\nBytes kh\u00f4ng ph\u1ea3i witness \u00d7 4\n+\nBytes witness<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t byte kh\u00f4ng ph\u1ea3i witness \u0111\u00f3ng g\u00f3p b\u1ed1n \u0111\u01a1n v\u1ecb tr\u1ecdng l\u01b0\u1ee3ng. M\u1ed9t byte witness \u0111\u00f3ng g\u00f3p m\u1ed9t \u0111\u01a1n v\u1ecb. Tr\u1ecdng s\u1ed1 th\u1ea5p h\u01a1n kh\u00f4ng l\u00e0m cho d\u1eef li\u1ec7u witness mi\u1ec5n ph\u00ed; n\u00f3 v\u1eabn ti\u00eau t\u1ed1n block Weight v\u00e0 v\u1eabn l\u00e0m t\u0103ng k\u00edch th\u01b0\u1edbc li\u00ean quan \u0111\u1ebfn ph\u00ed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ed v\u00e0 th\u1ecb tr\u01b0\u1eddng ph\u00ed th\u01b0\u1eddng bi\u1ec3u th\u1ecb k\u1ebft qu\u1ea3 b\u1eb1ng byte \u1ea3o, vi\u1ebft t\u1eaft l\u00e0 vB:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>vSize\n=\nceil(Transaction Weight \u00f7 4)<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Ph\u00e9p chia l\u00e0m tr\u00f2n l\u00ean \u0111\u1ebfn m\u1ed9t byte \u1ea3o nguy\u00ean. K\u00edch th\u01b0\u1edbc c\u01a1 b\u1ea3n, t\u1ed5ng k\u00edch th\u01b0\u1edbc tu\u1ea7n t\u1ef1 h\u00f3a, Weight v\u00e0 vSize l\u00e0 c\u00e1c ph\u00e9p \u0111o li\u00ean quan, nh\u01b0ng ch\u00fang kh\u00f4ng th\u1ec3 ho\u00e1n \u0111\u1ed5i cho nhau. K\u00edch th\u01b0\u1edbc c\u01a1 b\u1ea3n lo\u1ea1i tr\u1eeb d\u1eef li\u1ec7u li\u00ean quan \u0111\u1ebfn witness. T\u1ed5ng k\u00edch th\u01b0\u1edbc bao g\u1ed3m to\u00e0n b\u1ed9 tu\u1ea7n t\u1ef1 h\u00f3a. Weight \u00e1p d\u1ee5ng quy t\u1eafc b\u1ed1n-m\u1ed9t. vSize chuy\u1ec3n Weight \u0111\u00f3 th\u00e0nh k\u00edch th\u01b0\u1edbc s\u1ed1 nguy\u00ean \u0111\u01b0\u1ee3c d\u00f9ng cho c\u00e1c ph\u00e9p t\u00ednh t\u1ef7 l\u1ec7 ph\u00ed th\u00f4ng th\u01b0\u1eddng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">sat\/vB \u0110\u1ecbnh gi\u00e1 Giao d\u1ecbch<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u01a1n v\u1ecb ph\u00ed Bitcoin ph\u1ed5 bi\u1ebfn l\u00e0 satoshi tr\u00ean m\u1ed7i byte \u1ea3o, vi\u1ebft l\u00e0 sat\/vB. Khi c\u1ea5u tr\u00fac giao d\u1ecbch \u0111\u00e3 t\u1ea1o ra vSize, ph\u00e9p t\u00ednh ph\u00ed \u0111\u01a1n gi\u1ea3n l\u00e0:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Ph\u00ed \u01b0\u1edbc t\u00ednh (sats)\n=\nvSize giao d\u1ecbch\n\u00d7\nT\u1ef7 l\u1ec7 ph\u00ed (sat\/vB)<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c \u0111\u01a1n v\u1ecb tri\u1ec7t ti\u00eau m\u1ed9t c\u00e1ch s\u1ea1ch s\u1ebd: byte \u1ea3o nh\u00e2n v\u1edbi satoshi tr\u00ean m\u1ed7i byte \u1ea3o cho ra t\u1ed5ng s\u1ed1 satoshi.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1ef7 l\u1ec7 v\u00e0 t\u1ed5ng ph\u00ed tr\u1ea3 l\u1eddi c\u00e1c c\u00e2u h\u1ecfi kh\u00e1c nhau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>T\u1ef7 l\u1ec7 ph\u00ed:<\/strong> m\u1ee9c ph\u00ed giao d\u1ecbch tr\u1ea3 cho m\u1ed7i \u0111\u01a1n v\u1ecb k\u00edch th\u01b0\u1edbc \u1ea3o.<\/li>\n\n\n\n<li><strong>T\u1ed5ng ph\u00ed:<\/strong> s\u1ed1 satoshi m\u00e0 to\u00e0n b\u1ed9 giao d\u1ecbch ph\u1ea3i tr\u1ea3.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t giao d\u1ecbch l\u1edbn c\u00f3 th\u1ec3 tr\u1ea3 t\u1ed5ng ph\u00ed cao v\u1edbi t\u1ef7 l\u1ec7 v\u1eeba ph\u1ea3i. M\u1ed9t giao d\u1ecbch nh\u1ecf g\u1ecdn c\u00f3 th\u1ec3 tr\u1ea3 t\u1ed5ng ph\u00ed th\u1ea5p h\u01a1n ngay c\u1ea3 v\u1edbi t\u1ef7 l\u1ec7 cao h\u01a1n. Ch\u1ec9 so s\u00e1nh t\u1ed5ng ph\u00ed s\u1ebd che gi\u1ea5u s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa k\u00edch th\u01b0\u1edbc giao d\u1ecbch v\u00e0 m\u1ee9c \u0111\u1ed9 kh\u1ea9n c\u1ea5p c\u1ee7a th\u1ecb tr\u01b0\u1eddng ph\u00ed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Khi giao d\u1ecbch \u0111\u00e3 k\u00fd cu\u1ed1i c\u00f9ng \u0111\u01b0\u1ee3c bi\u1ebft, t\u1ef7 l\u1ec7 ph\u00ed hi\u1ec7u qu\u1ea3 c\u1ee7a n\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00ednh t\u1eeb ph\u00ed th\u1ef1c t\u1ebf v\u00e0 vSize th\u1ef1c t\u1ebf:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>T\u1ef7 l\u1ec7 ph\u00ed hi\u1ec7u qu\u1ea3\n=\nPh\u00ed th\u1ef1c t\u1ebf (sats)\n\u00f7\nvSize th\u1ef1c t\u1ebf (vB)<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1ef7 l\u1ec7 hi\u1ec7u qu\u1ea3 c\u00f3 th\u1ec3 ch\u1ee9a s\u1ed1 th\u1eadp ph\u00e2n m\u1eb7c d\u00f9 ph\u00ed giao d\u1ecbch t\u1ef1 n\u00f3 l\u00e0 m\u1ed9t s\u1ed1 nguy\u00ean satoshi.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ed ho\u1eb7c m\u00e1y t\u00ednh c\u0169ng c\u00f3 th\u1ec3 ch\u1ea5p nh\u1eadn m\u1ee5c ti\u00eau t\u1ef7 l\u1ec7 ph\u00ed th\u1eadp ph\u00e2n. Ph\u00ed giao d\u1ecbch t\u1ef1 n\u00f3 v\u1eabn quy v\u1ec1 m\u1ed9t s\u1ed1 nguy\u00ean sats v\u00ec gi\u00e1 tr\u1ecb \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra l\u00e0 s\u1ed1 nguy\u00ean. Khi ph\u00e9p nh\u00e2n t\u1ea1o ra m\u1ed9t ph\u1ea7n satoshi, vi\u1ec7c tri\u1ec3n khai ph\u1ea3i ch\u1ecdn m\u1ed9t m\u1ee9c ph\u00ed nguy\u00ean satoshi. L\u00e0m tr\u00f2n l\u00ean tr\u00e1nh vi\u1ec7c gi\u1ea3m xu\u1ed1ng d\u01b0\u1edbi t\u1ef7 l\u1ec7 m\u1ee5c ti\u00eau y\u00eau c\u1ea7u, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 l\u00e0m cho t\u1ef7 l\u1ec7 hi\u1ec7u qu\u1ea3 cu\u1ed1i c\u00f9ng cao h\u01a1n m\u1ed9t ch\u00fat so v\u1edbi gi\u00e1 tr\u1ecb \u0111\u00e3 nh\u1eadp.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">M\u1ed9t Ph\u00e9p T\u00ednh Ph\u00ed C\u00f3 Th\u1ec3 T\u00e1i T\u1ea1o<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ed d\u1ee5 sau \u0111\u00e2y m\u00f4 h\u00ecnh h\u00f3a m\u1ed9t c\u1ea5u tr\u00fac giao d\u1ecbch \u0111\u00e3 k\u00fd ph\u1ed5 bi\u1ebfn:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>2 \u0111\u1ea7u v\u00e0o Native SegWit P2WPKH;<\/li>\n\n\n\n<li>1 \u0111\u1ea7u ra ng\u01b0\u1eddi nh\u1eadn P2WPKH;<\/li>\n\n\n\n<li>1 \u0111\u1ea7u ra ti\u1ec1n th\u1eeba P2WPKH;<\/li>\n\n\n\n<li>S\u1ed1 \u0111\u1ebfm CompactSize m\u1ed7i c\u00e1i v\u1eeba trong m\u1ed9t byte;<\/li>\n\n\n\n<li>Ch\u1eef k\u00fd ECDSA \u0111\u01b0\u1ee3c tu\u1ea7n t\u1ef1 h\u00f3a 72 byte trong witness;<\/li>\n\n\n\n<li>v\u00e0 m\u1ee9c ph\u00ed \u0111\u00e3 ch\u1ecdn l\u00e0 12 sat\/vB.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 m\u1ed9t m\u00f4 h\u00ecnh k\u1ef9 thu\u1eadt minh h\u1ecda, kh\u00f4ng ph\u1ea3i b\u1ea3n ghi giao d\u1ecbch c\u1ee7a ng\u01b0\u1eddi d\u00f9ng hay tuy\u00ean b\u1ed1 v\u1ec1 m\u1ed9t v\u00ed c\u1ee5 th\u1ec3. \u0110\u1ed9 d\u00e0i ch\u1eef k\u00fd ECDSA cu\u1ed1i c\u00f9ng c\u00f3 th\u1ec3 thay \u0111\u1ed5i, v\u00ec v\u1eady v\u00ed c\u00f3 th\u1ec3 d\u1ef1 tr\u1eef m\u1ed9t k\u00edch th\u01b0\u1edbc \u0111\u1ea7u v\u00e0o t\u1ed1i \u0111a Weight h\u01a1i kh\u00e1c tr\u01b0\u1edbc khi k\u00fd.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">T\u1eeb tu\u1ea7n t\u1ef1 h\u00f3a \u0111\u1ebfn ph\u00ed cu\u1ed1i c\u00f9ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Hai \u0111\u1ea7u v\u00e0o P2WPKH \u0111\u00f3ng g\u00f3p 41 byte c\u01a1 s\u1edf m\u1ed7i \u0111\u1ea7u v\u00e0o. Hai \u0111\u1ea7u ra P2WPKH \u0111\u00f3ng g\u00f3p 31 byte m\u1ed7i \u0111\u1ea7u ra. C\u00e1c tr\u01b0\u1eddng c\u1ed1 \u0111\u1ecbnh v\u00e0 s\u1ed1 l\u01b0\u1ee3ng \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra m\u1ed9t byte \u0111\u00f3ng g\u00f3p th\u00eam 10 byte c\u01a1 s\u1edf. M\u1ed7i \u0111\u1ea7u v\u00e0o \u0111\u01b0\u1ee3c m\u00f4 h\u00ecnh h\u00f3a mang 108 byte witness: m\u1ed9t byte \u0111\u1ebfm m\u1ee5c ng\u0103n x\u1ebfp, m\u1ed9t byte \u0111\u1ed9 d\u00e0i ch\u1eef k\u00fd, m\u1ed9t ch\u1eef k\u00fd tu\u1ea7n t\u1ef1 h\u00f3a 72 byte, m\u1ed9t byte \u0111\u1ed9 d\u00e0i kh\u00f3a c\u00f4ng khai v\u00e0 m\u1ed9t kh\u00f3a c\u00f4ng khai n\u00e9n 33 byte.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Th\u00e0nh ph\u1ea7n<\/th><th>Byte c\u01a1 s\u1edf<\/th><th>Byte witness<\/th><th>\u0110\u00f3ng g\u00f3p Weight<\/th><\/tr><\/thead><tbody><tr><td>Phi\u00ean b\u1ea3n, s\u1ed1 l\u01b0\u1ee3ng v\u00e0 locktime<\/td><td>10<\/td><td>0<\/td><td>40 WU<\/td><\/tr><tr><td>Hai \u0111\u1ea7u v\u00e0o P2WPKH<\/td><td>82<\/td><td>216<\/td><td>544 WU<\/td><\/tr><tr><td>Hai \u0111\u1ea7u ra P2WPKH<\/td><td>62<\/td><td>0<\/td><td>248 WU<\/td><\/tr><tr><td>C\u1edd v\u00e0 \u0111i\u1ec3m \u0111\u00e1nh d\u1ea5u SegWit<\/td><td>0<\/td><td>2<\/td><td>2 WU<\/td><\/tr><tr><td><strong>T\u1ed5ng c\u1ed9ng<\/strong><\/td><td><strong>154<\/strong><\/td><td><strong>218<\/strong><\/td><td><strong>834 WU<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>Weight\n= (154 base bytes \u00d7 4) + 218 witness bytes\n= 834 WU\n\nvSize\n= ceil(834 \u00f7 4)\n= 209 vB\n\nFee\n= 209 vB \u00d7 12 sat\/vB\n= 2,508 sats<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ecdi gi\u1ea3 \u0111\u1ecbnh \u0111\u1ec1u hi\u1ec3n th\u1ecb. Thay \u0111\u1ed5i s\u1ed1 l\u01b0\u1ee3ng \u0111\u1ea7u v\u00e0o, s\u1ed1 l\u01b0\u1ee3ng \u0111\u1ea7u ra, lo\u1ea1i script, k\u00edch th\u01b0\u1edbc witness ho\u1eb7c t\u1ef7 l\u1ec7 ph\u00ed, v\u00e0 k\u1ebft qu\u1ea3 s\u1ebd thay \u0111\u1ed5i. \u0110\u1ec3 m\u00f4 h\u00ecnh h\u00f3a c\u00e1c lo\u1ea1i \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra h\u1ed7n h\u1ee3p, h\u00e3y m\u1edf <a href=\"https:\/\/bitcointoolkit.top\/vi\/tools\/bitcoin-transaction-fee-calculator\/\">Bitcoin M\u00e1y t\u00ednh ph\u00ed giao d\u1ecbch<\/a>, nh\u1eadp c\u1ea5u tr\u00fac \u0111\u01b0\u1ee3c v\u00ed hi\u1ec3n th\u1ecb v\u00e0 so s\u00e1nh \u01b0\u1edbc t\u00ednh v\u1edbi b\u1ea3n xem tr\u01b0\u1edbc giao d\u1ecbch cu\u1ed1i c\u00f9ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00f9ng kho\u1ea3n thanh to\u00e1n, ph\u00ed kh\u00e1c nhau<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Xem x\u00e9t hai v\u00ed m\u1ed7i v\u00ed g\u1eedi c\u00f9ng m\u1ed9t kho\u1ea3n thanh to\u00e1n 100.000-sat, t\u1ea1o m\u1ed9t \u0111\u1ea7u ra ti\u1ec1n th\u1eeba P2WPKH v\u00e0 s\u1eed d\u1ee5ng t\u1ef7 l\u1ec7 ph\u00ed 12 sat\/vB. S\u1ef1 kh\u00e1c bi\u1ec7t duy nh\u1ea5t l\u00e0 s\u1ed1 l\u01b0\u1ee3ng \u0111\u1ea7u v\u00e0o P2WPKH.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1eed d\u1ee5ng c\u00f9ng m\u00f4 h\u00ecnh ch\u1eef k\u00fd 72 byte nh\u01b0 v\u00ed d\u1ee5 \u0111\u00e3 t\u00ednh:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Giao d\u1ecbch \u0111\u01b0\u1ee3c m\u00f4 h\u00ecnh h\u00f3a<\/th><th>\u0110\u1ea7u v\u00e0o<\/th><th>\u0110\u1ea7u ra<\/th><th>Weight<\/th><th>vSize<\/th><th>Ph\u00ed t\u1ea1i 12 sat\/vB<\/th><\/tr><\/thead><tbody><tr><td>V\u00ed A<\/td><td>1 P2WPKH<\/td><td>2 P2WPKH<\/td><td>562 WU<\/td><td>141 vB<\/td><td>1.692 sats<\/td><\/tr><tr><td>V\u00ed B<\/td><td>8 P2WPKH<\/td><td>2 P2WPKH<\/td><td>2.466 WU<\/td><td>617 vB<\/td><td>7.404 sats<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Ng\u01b0\u1eddi nh\u1eadn nh\u1eadn c\u00f9ng m\u1ed9t s\u1ed1 ti\u1ec1n. T\u1ef7 l\u1ec7 ph\u00ed l\u00e0 nh\u01b0 nhau. V\u00ed B tr\u1ea3 nhi\u1ec1u h\u01a1n v\u00ec chi ti\u00eau nhi\u1ec1u \u0111\u1ea7u v\u00e0o h\u01a1n v\u00e0 t\u1ea1o ra giao d\u1ecbch l\u1edbn h\u01a1n.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">S\u1ed1 ti\u1ec1n c\u00f3 th\u1ec3 kh\u00f4ng \u0111\u1ed5i. C\u1ea5u tr\u00fac giao d\u1ecbch th\u00ec kh\u00f4ng.<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Do \u0111\u00f3, \u01b0\u1edbc t\u00ednh ph\u00ed kh\u00f4ng bi\u1ebft UTXO th\u1ef1c t\u1ebf c\u1ee7a v\u00ed ch\u1ec9 l\u00e0 m\u1ed9t k\u1ecbch b\u1ea3n, kh\u00f4ng ph\u1ea3i giao d\u1ecbch cu\u1ed1i c\u00f9ng. V\u00ed ph\u1ea3i ch\u1ecdn \u0111\u1ea7u v\u00e0o th\u1ef1c tr\u01b0\u1edbc khi c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc v\u00e0 ph\u00ed c\u00f3 kh\u1ea3 n\u0103ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Lo\u1ea1i \u0111\u1ea7u v\u00e0o thay \u0111\u1ed5i chi ph\u00ed<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1ed1 l\u01b0\u1ee3ng \u0111\u1ea7u v\u00e0o kh\u00f4ng ph\u1ea3i l\u00e0 bi\u1ebfn c\u1ea5u tr\u00fac duy nh\u1ea5t. C\u00e1c \u0111i\u1ec1u ki\u1ec7n chi ti\u00eau c\u1ee7a c\u00e1c \u0111\u1ea7u ra \u0111\u01b0\u1ee3c ch\u1ecdn x\u00e1c \u0111\u1ecbnh nh\u1eefng g\u00ec m\u1ed7i \u0111\u1ea7u v\u00e0o ph\u1ea3i tu\u1ea7n t\u1ef1 h\u00f3a.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c h\u1ed3 s\u01a1 ch\u1eef k\u00fd \u0111\u01a1n ph\u1ed5 bi\u1ebfn bao g\u1ed3m Legacy P2PKH, nested SegWit P2SH-P2WPKH, Native SegWit P2WPKH v\u00e0 Taproot key-path P2TR. Ch\u00fang kh\u00f4ng th\u00eam c\u00f9ng m\u1ed9t Weight.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>H\u1ed3 s\u01a1 \u0111\u1ea7u v\u00e0o ph\u1ed5 bi\u1ebfn<\/th><th>N\u01a1i d\u1eef li\u1ec7u \u1ee7y quy\u1ec1n xu\u1ea5t hi\u1ec7n<\/th><th>K\u00edch th\u01b0\u1edbc bi\u00ean minh h\u1ecda<\/th><th>Ranh gi\u1edbi quan tr\u1ecdng<\/th><\/tr><\/thead><tbody><tr><td>P2PKH<\/td><td>scriptSig giao d\u1ecbch c\u01a1 b\u1ea3n<\/td><td>Kho\u1ea3ng 148 vB<\/td><td>\u0110\u1ed9 d\u00e0i ch\u1eef k\u00fd ECDSA c\u00f3 th\u1ec3 thay \u0111\u1ed5i<\/td><\/tr><tr><td>P2SH-P2WPKH<\/td><td>Ch\u01b0\u01a1ng tr\u00ecnh redeem trong scriptSig c\u1ed9ng witness<\/td><td>Kho\u1ea3ng 91 vB<\/td><td>Nested SegWit bao g\u1ed3m d\u1eef li\u1ec7u b\u1ecdc<\/td><\/tr><tr><td>P2WPKH<\/td><td>Witness<\/td><td>Kho\u1ea3ng 68 vB<\/td><td>\u0110\u1ed9 d\u00e0i ch\u1eef k\u00fd ECDSA c\u00f3 th\u1ec3 thay \u0111\u1ed5i<\/td><\/tr><tr><td>P2TR \u0111\u01b0\u1eddng d\u1eabn kh\u00f3a<\/td><td>Ch\u1eef k\u00fd Schnorr \u0111\u01a1n trong witness<\/td><td>Kho\u1ea3ng 58 vB<\/td><td>M\u1ed9t byte sighash kh\u00f4ng m\u1eb7c \u0111\u1ecbnh th\u00eam m\u1ed9t byte<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u1eefng con s\u1ed1 n\u00e0y m\u00f4 t\u1ea3 c\u00e1c \u0111\u01b0\u1eddng chi ti\u00eau ch\u1eef k\u00fd \u0111\u01a1n ph\u1ed5 bi\u1ebfn, kh\u00f4ng ph\u1ea3i m\u1ecdi giao d\u1ecbch c\u00f3 th\u1ec3 x\u1ea3y ra. Multisig, P2WSH, Taproot \u0111\u01b0\u1eddng script, inscriptions, script ph\u1ee9c t\u1ea1p v\u00e0 c\u00e1c c\u1ea5u tr\u00fac kh\u00f4ng chu\u1ea9n c\u00f3 th\u1ec3 mang d\u1eef li\u1ec7u witness r\u1ea5t kh\u00e1c nhau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Lo\u1ea1i \u0111\u1ea7u ra c\u0169ng quan tr\u1ecdng, m\u1eb7c d\u00f9 \u0111\u1ecba ch\u1ec9 nh\u1eadn kh\u00f4ng ti\u1ebft l\u1ed9 chi ph\u00ed \u0111\u1ea7u v\u00e0o t\u01b0\u01a1ng lai ch\u00ednh x\u00e1c trong m\u1ecdi tr\u01b0\u1eddng h\u1ee3p. \u0110\u1ec3 so s\u00e1nh t\u1eadp trung v\u1ec1 m\u00e3 h\u00f3a \u0111\u1ecba ch\u1ec9, kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u00e0 c\u00e1c h\u1ecd script ph\u1ed5 bi\u1ebfn, h\u00e3y \u0111\u1ecdc <a href=\"https:\/\/bitcointoolkit.top\/vi\/learn\/bitcoin-address-types-explained\/\">Bitcoin c\u00e1c lo\u1ea1i \u0111\u1ecba ch\u1ec9 v\u00e0 \u00fd ngh\u0129a v\u00ed c\u1ee7a ch\u00fang<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">T\u1ea1i sao \u01b0\u1edbc t\u00ednh ph\u00ed v\u00ed thay \u0111\u1ed5i<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u01af\u1edbc t\u00ednh ph\u00ed v\u00ed c\u00f3 th\u1ec3 thay \u0111\u1ed5i gi\u1eefa bi\u1ec3u m\u1eabu thanh to\u00e1n v\u00e0 m\u00e0n h\u00ecnh k\u00fd ngay c\u1ea3 khi s\u1ed1 ti\u1ec1n ng\u01b0\u1eddi nh\u1eadn v\u1eabn gi\u1eef nguy\u00ean. M\u1ed9t s\u1ed1 quy\u1ebft \u0111\u1ecbnh x\u00e2y d\u1ef1ng giao d\u1ecbch v\u1eabn c\u00f3 th\u1ec3 ch\u01b0a \u0111\u01b0\u1ee3c gi\u1ea3i quy\u1ebft khi \u01b0\u1edbc t\u00ednh \u0111\u1ea7u ti\u00ean xu\u1ea5t hi\u1ec7n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">L\u1ef1a ch\u1ecdn coin v\u00e0 ti\u1ec1n th\u1eeba ch\u1ec9 l\u00e0 t\u1ea1m th\u1eddi<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ed ban \u0111\u1ea7u c\u00f3 th\u1ec3 m\u00f4 h\u00ecnh h\u00f3a m\u1ed9t s\u1ed1 l\u01b0\u1ee3ng \u0111\u1ea7u v\u00e0o, sau \u0111\u00f3 ch\u1ecdn m\u1ed9t t\u1eadp h\u1ee3p kh\u00e1c sau khi xem x\u00e9t tr\u1ea1ng th\u00e1i x\u00e1c nh\u1eadn, c\u00e0i \u0111\u1eb7t ki\u1ec3m so\u00e1t coin, quy t\u1eafc ri\u00eang t\u01b0, tr\u00e1nh ti\u1ec1n th\u1eeba ho\u1eb7c nhu c\u1ea7u trang tr\u1ea3i ph\u00ed. Khi c\u00e1c \u0111\u1ea7u v\u00e0o \u0111\u01b0\u1ee3c bi\u1ebft, n\u00f3 c\u00f3 th\u1ec3 th\u00eam, x\u00f3a ho\u1eb7c thay \u0111\u1ed5i lo\u1ea1i \u0111\u1ea7u ra ti\u1ec1n th\u1eeba.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bitcoin Core's <code>fundrawtransaction<\/code> t\u00e0i li\u1ec7u ph\u1ea3n \u00e1nh c\u00e1c l\u1ef1a ch\u1ecdn n\u00e0y: m\u1ed9t v\u00ed c\u00f3 th\u1ec3 th\u00eam \u0111\u1ea7u v\u00e0o, t\u1ea1o t\u1ed1i \u0111a m\u1ed9t \u0111\u1ea7u ra thay \u0111\u1ed5i, ch\u1ecdn lo\u1ea1i thay \u0111\u1ed5i, s\u1eed d\u1ee5ng t\u1ef7 l\u1ec7 ph\u00ed trong sat\/vB, ho\u1eb7c tr\u1eeb ph\u00ed t\u1eeb c\u00e1c \u0111\u1ea7u ra \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh. Th\u00eam \u0111\u1ea7u v\u00e0o l\u00e0m t\u0103ng Weight. Th\u00eam thay \u0111\u1ed5i l\u00e0m t\u0103ng k\u00edch th\u01b0\u1edbc \u0111\u1ea7u ra. Tr\u1eeb ph\u00ed l\u00e0m thay \u0111\u1ed5i s\u1ed1 ti\u1ec1n ng\u01b0\u1eddi nh\u1eadn. Tr\u00e1nh m\u1ed9t \u0111\u1ea7u ra thay \u0111\u1ed5i nh\u1ecf c\u00f3 th\u1ec3 chuy\u1ec3n ph\u1ea7n c\u00f2n l\u1ea1i v\u00e0o ph\u00ed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ch\u1eef k\u00fd v\u00e0 t\u1ef7 l\u1ec7 ph\u00ed \u0111\u01b0\u1ee3c \u01b0\u1edbc t\u00ednh<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u1eef k\u00fd ECDSA kh\u00f4ng \u0111\u01b0\u1ee3c \u0111\u1ea3m b\u1ea3o c\u00f3 \u0111\u1ed9 d\u00e0i tu\u1ea7n t\u1ef1 gi\u1ed1ng h\u1ec7t nhau. T\u00e0i li\u1ec7u t\u00e0i tr\u1ee3 giao d\u1ecbch c\u1ee7a Bitcoin Core khuy\u00ean n\u00ean s\u1eed d\u1ee5ng k\u00edch th\u01b0\u1edbc tu\u1ea7n t\u1ef1 t\u1ed1i \u0111a c\u1ee7a ch\u1eef k\u00fd DER khi \u01b0\u1edbc t\u00ednh Weight \u0111\u1ea7u v\u00e0o b\u00ean ngo\u00e0i \u0111\u01b0\u1ee3c cung c\u1ea5p. Do \u0111\u00f3, m\u1ed9t v\u00ed c\u00f3 th\u1ec3 d\u1ef1 tr\u1eef m\u1ee9c t\u1ed1i \u0111a an to\u00e0n tr\u01b0\u1edbc khi ch\u1eef k\u00fd th\u1ef1c t\u1ebf t\u1ed3n t\u1ea1i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1ef7 l\u1ec7 ph\u00ed c\u0169ng c\u00f3 th\u1ec3 l\u00e0m m\u1edbi tr\u01b0\u1edbc khi k\u00fd. N\u1ebfu v\u00ed nh\u1eadn \u0111\u01b0\u1ee3c \u01b0\u1edbc t\u00ednh m\u1edbi h\u01a1n ho\u1eb7c ng\u01b0\u1eddi d\u00f9ng thay \u0111\u1ed5i m\u1ee5c ti\u00eau x\u00e1c nh\u1eadn, t\u1ef7 l\u1ec7 sat\/vB \u0111\u01b0\u1ee3c ch\u1ecdn s\u1ebd thay \u0111\u1ed5i ngay c\u1ea3 khi c\u1ea5u tr\u00fac giao d\u1ecbch kh\u00f4ng thay \u0111\u1ed5i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 s\u1ef1 kh\u00e1c bi\u1ec7t ng\u1eabu nhi\u00ean. M\u1ed9t kho\u1ea3n ph\u00ed thay \u0111\u1ed5i n\u00ean \u00e1nh x\u1ea1 \u0111\u1ebfn m\u1ed9t t\u1eadp h\u1ee3p \u0111\u1ea7u v\u00e0o, c\u1ea5u tr\u00fac \u0111\u1ea7u ra, gi\u1ea3 \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc ch\u1eef k\u00fd, \u01b0\u1edbc t\u00ednh t\u1ef7 l\u1ec7 ph\u00ed ho\u1eb7c s\u1ef1 k\u1ebft h\u1ee3p c\u1ee7a ch\u00fang \u0111\u00e3 thay \u0111\u1ed5i.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Nhu c\u1ea7u m\u1ea1ng x\u00e1c \u0111\u1ecbnh t\u1ef7 l\u1ec7<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u1ea5u tr\u00fac giao d\u1ecbch x\u00e1c \u0111\u1ecbnh vSize. \u0110i\u1ec1u ki\u1ec7n m\u1ea1ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ef7 l\u1ec7 m\u00e0 v\u00ed ch\u1ecdn cho m\u1ed9t m\u1ee5c ti\u00eau x\u00e1c nh\u1eadn.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00f4ng gian kh\u1ed1i Bitcoin b\u1ecb gi\u1edbi h\u1ea1n. C\u00e1c giao d\u1ecbch ch\u01b0a \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn c\u1ea1nh tranh \u0111\u1ec3 \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o, v\u00e0 t\u1ef7 l\u1ec7 ph\u00ed l\u00e0 m\u1ed9t trong nh\u1eefng t\u00edn hi\u1ec7u ch\u00ednh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 so s\u00e1nh m\u1ed7i giao d\u1ecbch tr\u1ea3 bao nhi\u00eau so v\u1edbi k\u00edch th\u01b0\u1edbc \u1ea3o c\u1ee7a n\u00f3. M\u1ed9t v\u00ed c\u00f3 th\u1ec3 ch\u1ecdn t\u1ef7 l\u1ec7 cao h\u01a1n cho m\u1ee5c ti\u00eau t\u00edch c\u1ef1c h\u01a1n ho\u1eb7c t\u1ef7 l\u1ec7 th\u1ea5p h\u01a1n khi ng\u01b0\u1eddi d\u00f9ng ch\u1ea5p nh\u1eadn nhi\u1ec1u \u0111\u1ed9 tr\u1ec5 h\u01a1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bitcoin Core's <code>estimatesmartfee<\/code> RPC tr\u1ea3 v\u1ec1 t\u1ef7 l\u1ec7 ph\u00ed g\u1ea7n \u0111\u00fang \u0111\u1ec3 m\u1ed9t giao d\u1ecbch b\u1eaft \u0111\u1ea7u x\u00e1c nh\u1eadn trong m\u1ed9t s\u1ed1 kh\u1ed1i \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u khi c\u00f3 \u0111\u1ee7 d\u1eef li\u1ec7u. N\u00f3 s\u1eed d\u1ee5ng k\u00edch th\u01b0\u1edbc giao d\u1ecbch \u1ea3o v\u00e0 cung c\u1ea5p hai ch\u1ebf \u0111\u1ed9 \u01b0\u1edbc t\u00ednh:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ti\u1ebft ki\u1ec7m<\/strong> ph\u1ea3n h\u1ed3i nhanh h\u01a1n v\u1edbi c\u00e1c \u0111\u1ee3t gi\u1ea3m ph\u00ed ng\u1eafn h\u1ea1n v\u00e0 c\u00f3 th\u1ec3 tr\u1ea3 v\u1ec1 m\u1ee9c \u01b0\u1edbc t\u00ednh th\u1ea5p h\u01a1n.<\/li>\n\n\n\n<li><strong>Th\u1eadn tr\u1ecdng<\/strong> s\u1eed d\u1ee5ng l\u1ecbch s\u1eed d\u00e0i h\u01a1n, ph\u1ea3n h\u1ed3i ch\u1eadm h\u01a1n v\u1edbi c\u00e1c \u0111\u1ee3t gi\u1ea3m ng\u1eafn h\u1ea1n v\u00e0 c\u00f3 th\u1ec3 tr\u1ea3 v\u1ec1 m\u1ee9c \u01b0\u1edbc t\u00ednh cao h\u01a1n.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00f4ng ch\u1ebf \u0111\u1ed9 n\u00e0o d\u00e0nh ri\u00eang kh\u00f4ng gian kh\u1ed1i. M\u1ee9c \u01b0\u1edbc t\u00ednh d\u1ef1a tr\u00ean h\u00e0nh vi quan s\u00e1t \u0111\u01b0\u1ee3c, kh\u00f4ng ph\u1ea3i l\u00e0 l\u1eddi h\u1ee9a r\u1eb1ng th\u1ee3 \u0111\u00e0o s\u1ebd \u0111\u01b0a giao d\u1ecbch v\u00e0o m\u1ed9t kh\u1ed1i c\u1ee5 th\u1ec3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ed, tr\u00ecnh kh\u00e1m ph\u00e1 v\u00e0 d\u1ecbch v\u1ee5 c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c c\u1eeda s\u1ed5 th\u1eddi gian, ch\u1ebf \u0111\u1ed9 xem mempool, bi\u00ean \u0111\u1ed9 an to\u00e0n v\u00e0 nh\u00e3n m\u1ee5c ti\u00eau kh\u00e1c nhau. Do \u0111\u00f3, hai giao di\u1ec7n c\u00f3 th\u1ec3 \u0111\u1ec1 xu\u1ea5t m\u1ee9c ph\u00ed kh\u00e1c nhau t\u1ea1i c\u00f9ng m\u1ed9t th\u1eddi \u0111i\u1ec3m m\u00e0 kh\u00f4ng \u00e1p d\u1ee5ng c\u00e1c quy t\u1eafc \u0111\u1ed3ng thu\u1eadn Bitcoin kh\u00e1c nhau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00f4ng c\u00f3 m\u1ed9t h\u00e0ng \u0111\u1ee3i mempool to\u00e0n c\u1ea7u duy nh\u1ea5t m\u00e0 m\u1ecdi n\u00fat \u0111\u1ec1u th\u1ea5y theo \u0111\u00fang c\u00f9ng m\u1ed9t th\u1ee9 t\u1ef1. C\u00e1c n\u00fat nh\u1eadn giao d\u1ecbch t\u1ea1i c\u00e1c th\u1eddi \u0111i\u1ec3m kh\u00e1c nhau v\u00e0 \u00e1p d\u1ee5ng c\u00e1c c\u00e0i \u0111\u1eb7t ch\u00ednh s\u00e1ch ri\u00eang c\u1ee7a ch\u00fang. \u01af\u1edbc t\u00ednh c\u1ee7a v\u00ed m\u00f4 t\u1ea3 d\u1eef li\u1ec7u c\u00f3 s\u1eb5n cho ngu\u1ed3n ph\u00ed c\u1ee7a n\u00f3; th\u1ee3 \u0111\u00e0o cu\u1ed1i c\u00f9ng ch\u1ecdn t\u1eeb c\u00e1c giao d\u1ecbch v\u00e0 ch\u00ednh s\u00e1ch c\u00f3 s\u1eb5n cho ho\u1ea1t \u0111\u1ed9ng khai th\u00e1c \u0111\u00f3.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Giao d\u1ecbch \u0111\u00e3 k\u00fd cu\u1ed1i c\u00f9ng<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u01b0\u1edbc khi k\u00fd, v\u00ed \u01b0\u1edbc t\u00ednh d\u1eef li\u1ec7u \u1ee7y quy\u1ec1n c\u1ea7n thi\u1ebft cho m\u1ed7i \u0111\u1ea7u v\u00e0o. Sau khi k\u00fd, giao d\u1ecbch ch\u1ee9a ch\u1eef k\u00fd th\u1ef1c t\u1ebf v\u00e0 c\u00e1c ng\u0103n x\u1ebfp witness. Tu\u1ea7n t\u1ef1 h\u00f3a cu\u1ed1i c\u00f9ng ti\u1ebft l\u1ed9 Weight th\u1ef1c, vSize, t\u1ed5ng ph\u00ed v\u00e0 m\u1ee9c ph\u00ed hi\u1ec7u qu\u1ea3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Do \u0111\u00f3, m\u00e0n h\u00ecnh k\u00fd n\u00ean \u0111\u01b0\u1ee3c coi l\u00e0 c\u00f3 th\u1ea9m quy\u1ec1n h\u01a1n so v\u1edbi \u01b0\u1edbc t\u00ednh nh\u1eadp s\u1ed1 ti\u1ec1n ban \u0111\u1ea7u. N\u00f3 c\u00f3 th\u1ec3 ti\u1ebft l\u1ed9 r\u1eb1ng v\u00ed \u0111\u00e3 ch\u1ecdn nhi\u1ec1u \u0111\u1ea7u v\u00e0o h\u01a1n d\u1ef1 ki\u1ebfn, th\u00eam ti\u1ec1n th\u1eeba, s\u1eed d\u1ee5ng lo\u1ea1i \u0111\u1ea7u ra kh\u00e1c, t\u1ea1o ra k\u00edch th\u01b0\u1edbc ch\u1eef k\u00fd kh\u00e1c ho\u1eb7c l\u00e0m m\u1edbi m\u1ee9c ph\u00ed tr\u01b0\u1edbc khi \u1ee7y quy\u1ec1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Chi ti\u1ebft thanh to\u00e1n c\u00f3 th\u1ec3 ch\u00ednh x\u00e1c trong khi c\u1ea5u tr\u00fac giao d\u1ecbch v\u1eabn \u0111\u00e1ng \u0111\u01b0\u1ee3c xem x\u00e9t l\u1ea1i. Ki\u1ec3m tra c\u1ea3 hai tr\u01b0\u1edbc khi ph\u00e1t s\u00f3ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Thay \u0111\u1ed5i ph\u00ed sau khi ph\u00e1t s\u00f3ng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ph\u00e1t s\u00f3ng s\u1ebd g\u1eedi giao d\u1ecbch \u0111\u1ebfn c\u00e1c n\u00fat ngang h\u00e0ng. N\u00f3 kh\u00f4ng \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u1ecdi n\u00fat s\u1ebd ch\u1ea5p nh\u1eadn v\u00e0 gi\u1eef l\u1ea1i giao d\u1ecbch ho\u1eb7c r\u1eb1ng n\u00f3 s\u1ebd xu\u1ea5t hi\u1ec7n trong kh\u1ed1i ti\u1ebfp theo. C\u00e1c giao d\u1ecbch m\u1edbi c\u00f3 th\u1ec3 tham gia th\u1ecb tr\u01b0\u1eddng ph\u00ed sau giao d\u1ecbch c\u1ee7a b\u1ea1n, l\u00e0m cho m\u1ee9c ph\u00ed ban \u0111\u1ea7u k\u00e9m c\u1ea1nh tranh h\u01a1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t s\u1ed1 v\u00ed c\u00f3 th\u1ec3 t\u1ea1o giao d\u1ecbch thay th\u1ebf v\u1edbi ph\u00ed cao h\u01a1n khi giao d\u1ecbch ch\u01b0a \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn \u0111\u1ee7 \u0111i\u1ec1u ki\u1ec7n \u0111\u1ec3 t\u0103ng ph\u00ed. Quy tr\u00ecnh l\u00e0m vi\u1ec7c c\u1ee7a Bitcoin Core <code>bumpfee<\/code> c\u00f3 th\u1ec3 gi\u1ea3m ti\u1ec1n th\u1eeba ho\u1eb7c th\u00eam \u0111\u1ea7u v\u00e0o khi c\u1ea7n thi\u1ebft, \u0111i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 k\u00edch th\u01b0\u1edbc v\u00e0 t\u1ed5ng ph\u00ed c\u1ee7a giao d\u1ecbch thay th\u1ebf c\u00f3 th\u1ec3 kh\u00e1c so v\u1edbi b\u1ea3n g\u1ed1c.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0110\u1ecdc b\u1ea3n xem tr\u01b0\u1edbc cu\u1ed1i c\u00f9ng c\u1ee7a v\u00ed<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u01b0\u1edbc khi k\u00fd, h\u00e3y ki\u1ec3m tra c\u00e1c con s\u1ed1 x\u00e1c l\u1eadp ph\u00ed thay v\u00ec ch\u1ec9 d\u1ef1a v\u00e0o m\u1ed9t d\u00f2ng \u201cph\u00ed m\u1ea1ng\u201d duy nh\u1ea5t.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>S\u1ed1 ti\u1ec1n ng\u01b0\u1eddi nh\u1eadn:<\/strong> X\u00e1c nh\u1eadn s\u1ed1 ti\u1ec1n \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh cho ng\u01b0\u1eddi nh\u1eadn d\u1ef1 ki\u1ebfn v\u00e0 li\u1ec7u ph\u00ed c\u00f3 \u0111\u01b0\u1ee3c kh\u1ea5u tr\u1eeb t\u1eeb \u0111\u1ea7u ra \u0111\u00f3 hay kh\u00f4ng.<\/li>\n\n\n\n<li><strong>C\u00e1c \u0111\u1ea7u v\u00e0o \u0111\u00e3 ch\u1ecdn:<\/strong> S\u1ed1 l\u01b0\u1ee3ng \u0111\u1ea7u v\u00e0o l\u1edbn h\u01a1n d\u1ef1 ki\u1ebfn gi\u1ea3i th\u00edch cho nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p t\u0103ng ph\u00ed.<\/li>\n\n\n\n<li><strong>\u0110\u1ea7u ra v\u00e0 thay \u0111\u1ed5i:<\/strong> X\u00e1c nh\u1eadn \u0111\u1ea7u ra c\u1ee7a ng\u01b0\u1eddi nh\u1eadn, thay \u0111\u1ed5i \u0111\u1ea7u ra v\u00e0 thay \u0111\u1ed5i \u0111\u00edch.<\/li>\n\n\n\n<li><strong>K\u00edch th\u01b0\u1edbc \u1ea3o:<\/strong> Xem l\u1ea1i con s\u1ed1 vB khi v\u00ed hi\u1ec3n th\u1ecb n\u00f3.<\/li>\n\n\n\n<li><strong>T\u1ef7 l\u1ec7 ph\u00ed:<\/strong> Ph\u00e2n bi\u1ec7t t\u1ef7 l\u1ec7 trong sat\/vB v\u1edbi ph\u00ed tuy\u1ec7t \u0111\u1ed1i trong sats.<\/li>\n\n\n\n<li><strong>T\u1ed5ng ph\u00ed:<\/strong> X\u00e1c nh\u1eadn t\u1ed5ng s\u1ed1 satoshi m\u00e0 giao d\u1ecbch ho\u00e0n ch\u1ec9nh ph\u1ea3i tr\u1ea3.<\/li>\n\n\n\n<li><strong>M\u1ee5c ti\u00eau x\u00e1c nh\u1eadn:<\/strong> Coi n\u00f3 nh\u01b0 m\u1ed9t \u01b0\u1edbc t\u00ednh v\u00e0 l\u01b0u \u00fd li\u1ec7u v\u00ed c\u00f3 th\u1ec3 t\u0103ng ph\u00ed sau n\u00e0y hay kh\u00f4ng.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Ki\u1ec3m tra ch\u00e9o h\u1eefu \u00edch nh\u1ea5t l\u00e0 s\u1ed1 h\u1ecdc:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>vSize hi\u1ec3n th\u1ecb \u00d7 sat\/vB hi\u1ec3n th\u1ecb c\u00f3 x\u1ea5p x\u1ec9 kh\u1edbp v\u1edbi ph\u00ed hi\u1ec3n th\u1ecb b\u1eb1ng sats kh\u00f4ng?<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t kh\u00e1c bi\u1ec7t nh\u1ecf c\u00f3 th\u1ec3 \u0111\u1ebfn t\u1eeb t\u1ef7 l\u1ec7 ph\u00ed th\u1eadp ph\u00e2n, l\u00e0m tr\u00f2n to\u00e0n b\u1ed9 satoshi, ho\u1eb7c gi\u00e1 tr\u1ecb hi\u1ec3n th\u1ecb \u0111\u01b0\u1ee3c l\u00e0m tr\u00f2n. M\u1ed9t kh\u00e1c bi\u1ec7t l\u1edbn kh\u00f4ng gi\u1ea3i th\u00edch \u0111\u01b0\u1ee3c \u0111\u00e1ng \u0111\u01b0\u1ee3c xem x\u00e9t l\u1ea1i tr\u01b0\u1edbc khi k\u00fd.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 c\u00f3 b\u1ed1i c\u1ea3nh r\u1ed9ng h\u01a1n v\u1ec1 UTXO, x\u00e1c nh\u1eadn, th\u1ee3 \u0111\u00e0o v\u00e0 x\u00e1c th\u1ef1c, h\u00e3y ti\u1ebfp t\u1ee5c \u0111\u1ebfn <a href=\"https:\/\/bitcointoolkit.top\/vi\/coins\/bitcoin\/\">T\u00e0i li\u1ec7u tham kh\u1ea3o m\u1ea1ng v\u00e0 giao d\u1ecbch Bitcoin<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Nh\u1eefng g\u00ec \u01b0\u1edbc t\u00ednh kh\u00f4ng th\u1ec3 \u0111\u1ea3m b\u1ea3o<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t \u01b0\u1edbc t\u00ednh ph\u00ed ho\u00e0n ch\u1ec9nh c\u00f3 th\u1ec3 m\u00f4 t\u1ea3 giao d\u1ecbch v\u00e0 t\u1ef7 l\u1ec7 \u0111\u00e3 ch\u1ecdn. N\u00f3 kh\u00f4ng th\u1ec3 \u0111\u1ea3m b\u1ea3o:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>x\u00e1c nh\u1eadn trong kh\u1ed1i ti\u1ebfp theo ho\u1eb7c t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m ch\u00ednh x\u00e1c;<\/li>\n\n\n\n<li>s\u1ef1 ch\u1ea5p nh\u1eadn v\u00e0 duy tr\u00ec li\u00ean t\u1ee5c b\u1edfi m\u1ecdi n\u00fat;<\/li>\n\n\n\n<li>nhu c\u1ea7u m\u1ea1ng kh\u00f4ng thay \u0111\u1ed5i sau khi giao d\u1ecbch \u0111\u01b0\u1ee3c k\u00fd;<\/li>\n\n\n\n<li>ho\u1eb7c r\u1eb1ng v\u00ed \u0111\u00e3 ch\u1ecdn \u0111\u1ea7u v\u00e0o ri\u00eang t\u01b0 v\u00e0 kinh t\u1ebf nh\u1ea5t ho\u1eb7c s\u1ebd kh\u00f4ng bao gi\u1edd c\u1ea7n t\u0103ng ph\u00ed.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e2u h\u1ecfi c\u00f3 th\u1ec3 t\u00e1i t\u1ea1o l\u00e0 h\u1eb9p h\u01a1n: v\u1edbi c\u1ea5u tr\u00fac giao d\u1ecbch n\u00e0y v\u00e0 t\u1ef7 l\u1ec7 ph\u00ed n\u00e0y, giao d\u1ecbch tr\u1ea3 bao nhi\u00eau satoshi? Th\u1eddi gian x\u00e1c nh\u1eadn v\u1eabn mang t\u00ednh x\u00e1c su\u1ea5t.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 ph\u00ed giao d\u1ecbch Bitcoin<\/h2>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>Ph\u00ed giao d\u1ecbch Bitcoin c\u00f3 d\u1ef1a tr\u00ean s\u1ed1 ti\u1ec1n g\u1eedi kh\u00f4ng?<\/summary>\n<p class=\"wp-block-paragraph\">Kh\u00f4ng. Ph\u00ed giao d\u1ecbch Bitcoin ch\u1ee7 y\u1ebfu d\u1ef1a tr\u00ean k\u00edch th\u01b0\u1edbc \u1ea3o c\u1ee7a giao d\u1ecbch v\u00e0 t\u1ef7 l\u1ec7 ph\u00ed \u0111\u00e3 ch\u1ecdn. S\u1ed1 ti\u1ec1n g\u1eedi c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn UTXO m\u00e0 v\u00ed c\u1ea7n, nh\u01b0ng m\u1ed9t kho\u1ea3n thanh to\u00e1n l\u1edbn h\u01a1n kh\u00f4ng t\u1ef1 \u0111\u1ed9ng t\u1ea1o ra ph\u00ed l\u1edbn h\u01a1n.<\/p>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>sat\/vB ngh\u0129a l\u00e0 g\u00ec?<\/summary>\n<p class=\"wp-block-paragraph\">Sat\/vB c\u00f3 ngh\u0129a l\u00e0 satoshi tr\u00ean m\u1ed7i byte \u1ea3o. \u0110\u00e2y l\u00e0 t\u1ef7 l\u1ec7 ph\u00ed \u00e1p d\u1ee5ng cho k\u00edch th\u01b0\u1edbc \u1ea3o c\u1ee7a giao d\u1ecbch. Nh\u00e2n vSize v\u1edbi t\u1ef7 l\u1ec7 ph\u00ed s\u1ebd cho t\u1ed5ng ph\u00ed m\u00f4 h\u00ecnh h\u00f3a b\u1eb1ng satoshi.<\/p>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>T\u1ea1i sao ph\u00ed v\u00ed Bitcoin c\u1ee7a t\u00f4i thay \u0111\u1ed5i tr\u01b0\u1edbc khi t\u00f4i k\u00fd?<\/summary>\n<p class=\"wp-block-paragraph\">V\u00ed c\u00f3 th\u1ec3 ch\u1ecdn c\u00e1c \u0111\u1ea7u v\u00e0o kh\u00e1c nhau, th\u00eam ho\u1eb7c x\u00f3a ti\u1ec1n th\u1eeba, c\u1eadp nh\u1eadt lo\u1ea1i ti\u1ec1n th\u1eeba, d\u1ef1 tr\u1eef k\u00edch th\u01b0\u1edbc ch\u1eef k\u00fd kh\u00e1c ho\u1eb7c l\u00e0m m\u1edbi t\u1ef7 l\u1ec7 ph\u00ed. B\u1ea5t k\u1ef3 thay \u0111\u1ed5i n\u00e0o trong s\u1ed1 \u0111\u00f3 c\u00f3 th\u1ec3 l\u00e0m thay \u0111\u1ed5i ph\u00ed cu\u1ed1i c\u00f9ng.<\/p>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>T\u1ea1i sao hai v\u00ed c\u00f3 th\u1ec3 t\u00ednh ph\u00ed kh\u00e1c nhau cho c\u00f9ng m\u1ed9t kho\u1ea3n thanh to\u00e1n?<\/summary>\n<p class=\"wp-block-paragraph\">C\u00e1c v\u00ed c\u00f3 th\u1ec3 ki\u1ec3m so\u00e1t c\u00e1c UTXO kh\u00e1c nhau, ch\u1ecdn \u0111\u1ea7u v\u00e0o kh\u00e1c nhau, t\u1ea1o \u0111\u1ea7u ra ti\u1ec1n th\u1eeba kh\u00e1c nhau, s\u1eed d\u1ee5ng \u01b0\u1edbc t\u00ednh t\u1ef7 l\u1ec7 ph\u00ed kh\u00e1c nhau ho\u1eb7c \u00e1p d\u1ee5ng bi\u00ean \u0111\u1ed9 an to\u00e0n kh\u00e1c nhau. S\u1ed1 ti\u1ec1n ng\u01b0\u1eddi nh\u1eadn c\u00f3 th\u1ec3 gi\u1ed1ng nhau trong khi c\u1ea5u tr\u00fac giao d\u1ecbch kh\u00e1c nhau.<\/p>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>Ph\u00ed Bitcoin cao h\u01a1n c\u00f3 \u0111\u1ea3m b\u1ea3o x\u00e1c nh\u1eadn nhanh h\u01a1n kh\u00f4ng?<\/summary>\n<p class=\"wp-block-paragraph\">Kh\u00f4ng. T\u1ef7 l\u1ec7 ph\u00ed cao h\u01a1n c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n \u01b0u ti\u00ean t\u01b0\u01a1ng \u0111\u1ed1i c\u1ee7a giao d\u1ecbch, nh\u01b0ng kh\u00f4ng th\u1ec3 \u0111\u1ea3m b\u1ea3o m\u1ed9t kh\u1ed1i c\u1ee5 th\u1ec3. Nhu c\u1ea7u trong t\u01b0\u01a1ng lai, l\u1ef1a ch\u1ecdn th\u1ee3 \u0111\u00e0o, ch\u00ednh s\u00e1ch mempool v\u00e0 kh\u00e1m ph\u00e1 kh\u1ed1i v\u1eabn n\u1eb1m ngo\u00e0i t\u1ea7m ki\u1ec3m so\u00e1t c\u1ee7a v\u00ed.<\/p>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary>C\u00f3 th\u1ec3 t\u0103ng ph\u00ed Bitcoin sau khi ph\u00e1t s\u00f3ng kh\u00f4ng?<\/summary>\n<p class=\"wp-block-paragraph\">M\u1ed9t s\u1ed1 v\u00ed c\u00f3 th\u1ec3 t\u1ea1o giao d\u1ecbch thay th\u1ebf v\u1edbi ph\u00ed cao h\u01a1n khi giao d\u1ecbch g\u1ed1c \u0111\u1ee7 \u0111i\u1ec1u ki\u1ec7n \u0111\u1ec3 t\u0103ng ph\u00ed. Giao d\u1ecbch thay th\u1ebf c\u00f3 th\u1ec3 gi\u1ea3m ti\u1ec1n th\u1eeba ho\u1eb7c th\u00eam \u0111\u1ea7u v\u00e0o, do \u0111\u00f3 k\u00edch th\u01b0\u1edbc giao d\u1ecbch v\u00e0 t\u1ed5ng ph\u00ed c\u00f3 th\u1ec3 thay \u0111\u1ed5i.<\/p>\n<\/details>\n\n\n\n<h2 class=\"wp-block-heading\">Ngu\u1ed3n K\u1ef9 Thu\u1eadt<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c c\u00f4ng th\u1ee9c v\u00e0 ranh gi\u1edbi x\u00e2y d\u1ef1ng giao d\u1ecbch trong h\u01b0\u1edbng d\u1eabn n\u00e0y d\u1ef1a tr\u00ean \u0111\u1eb7c t\u1ea3 Bitcoin ch\u00ednh v\u00e0 t\u00e0i li\u1ec7u Bitcoin Core.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/github.com\/bitcoin\/bips\/blob\/master\/bip-0141.mediawiki\" target=\"_blank\" rel=\"noopener noreferrer\">BIP 141: Segregated Witness<\/a> \u2014 \u0111\u1ecbnh ngh\u0129a Weight giao d\u1ecbch, k\u00edch th\u01b0\u1edbc c\u01a1 s\u1edf, t\u1ed5ng k\u00edch th\u01b0\u1edbc v\u00e0 k\u00edch th\u01b0\u1edbc giao d\u1ecbch \u1ea3o.<\/li>\n\n\n\n<li><a href=\"https:\/\/developer.bitcoin.org\/reference\/transactions.html\" target=\"_blank\" rel=\"noopener noreferrer\">T\u00e0i li\u1ec7u tham kh\u1ea3o giao d\u1ecbch nh\u00e0 ph\u00e1t tri\u1ec3n Bitcoin<\/a> \u2014 ghi l\u1ea1i c\u00e1c \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra \u0111\u01b0\u1ee3c tu\u1ea7n t\u1ef1 h\u00f3a v\u00e0 gi\u1ea3i th\u00edch r\u1eb1ng gi\u00e1 tr\u1ecb \u0111\u1ea7u ra \u0111\u01b0\u1ee3c ghi b\u1eb1ng satoshi.<\/li>\n\n\n\n<li><a href=\"https:\/\/bitcoincore.org\/en\/doc\/31.0.0\/rpc\/util\/estimatesmartfee\/\" target=\"_blank\" rel=\"noopener noreferrer\">Bitcoin Core 31.0 estimatesmartfee RPC<\/a> \u2014 ghi l\u1ea1i \u01b0\u1edbc t\u00ednh t\u1ef7 l\u1ec7 ph\u00ed theo m\u1ee5c ti\u00eau x\u00e1c nh\u1eadn, s\u1eed d\u1ee5ng k\u00edch th\u01b0\u1edbc \u1ea3o v\u00e0 c\u00e1c ch\u1ebf \u0111\u1ed9 kinh t\u1ebf v\u00e0 th\u1eadn tr\u1ecdng.<\/li>\n\n\n\n<li><a href=\"https:\/\/bitcoincore.org\/en\/doc\/31.0.0\/rpc\/rawtransactions\/fundrawtransaction\/\" target=\"_blank\" rel=\"noopener noreferrer\">Bitcoin Core 31.0 fundrawtransaction RPC<\/a> \u2014 t\u00e0i li\u1ec7u t\u1ef1 \u0111\u1ed9ng ch\u1ecdn \u0111\u1ea7u v\u00e0o, thay \u0111\u1ed5i t\u1ea1o, c\u00e0i \u0111\u1eb7t ph\u00ed, kh\u1ea5u tr\u1eeb ph\u00ed v\u00e0 gi\u1ea3 \u0111\u1ecbnh \u0111\u1ea7u v\u00e0o-Weight.<\/li>\n\n\n\n<li><a href=\"https:\/\/bitcoincore.org\/en\/doc\/31.0.0\/rpc\/wallet\/bumpfee\/\" target=\"_blank\" rel=\"noopener noreferrer\">Bitcoin Core 31.0 bumpfee RPC<\/a> \u2014 t\u00e0i li\u1ec7u thay th\u1ebf ph\u00ed v\u00ed v\u00e0 c\u00e1ch giao d\u1ecbch ph\u00ed cao h\u01a1n c\u00f3 th\u1ec3 gi\u1ea3m ti\u1ec1n th\u1eeba ho\u1eb7c th\u00eam \u0111\u1ea7u v\u00e0o.<\/li>\n\n\n\n<li><a href=\"https:\/\/github.com\/bitcoin\/bips\/blob\/master\/bip-0341.mediawiki\" target=\"_blank\" rel=\"noopener noreferrer\">BIP 341: Taproot<\/a> \u2014 \u0111\u1ecbnh ngh\u0129a ch\u1eef k\u00fd \u0111\u01b0\u1eddng d\u1eabn kh\u00f3a Taproot v\u00e0 h\u00e0nh vi witness \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u00f4 h\u00ecnh k\u00edch th\u01b0\u1edbc \u0111\u1ea7u v\u00e0o P2TR ph\u1ed5 bi\u1ebfn.<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Ph\u00ed Bitcoin ph\u1ee5 thu\u1ed9c v\u00e0o k\u00edch th\u01b0\u1edbc \u1ea3o c\u1ee7a giao d\u1ecbch, t\u1ef7 l\u1ec7 ph\u00ed v\u00e0 nhu c\u1ea7u thay \u0111\u1ed5i v\u1ec1 kh\u00f4ng gian kh\u1ed1i\u2014kh\u00f4ng ch\u1ec9 \u0111\u01a1n gi\u1ea3n l\u00e0 s\u1ed1 ti\u1ec1n \u0111\u01b0\u1ee3c g\u1eedi.<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-8","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How Bitcoin Transaction Fees Work | BitcoinToolkit<\/title>\n<meta name=\"description\" content=\"Bitcoin fees depend on transaction virtual size, fee rate and changing demand for block space\u2014not simply the amount sent.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/bitcointoolkit.top\/vi\/learn\/how-bitcoin-transaction-fees-work\/\" \/>\n<meta property=\"og:locale\" content=\"vi\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How Bitcoin Transaction Fees Work | BitcoinToolkit\" \/>\n<meta property=\"og:description\" content=\"Bitcoin fees depend on transaction virtual size, fee rate and changing demand for block space\u2014not simply the amount sent.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/bitcointoolkit.top\/vi\/learn\/how-bitcoin-transaction-fees-work\/\" \/>\n<meta property=\"og:site_name\" content=\"BitcoinToolkit\" \/>\n<meta property=\"article:published_time\" content=\"2026-07-25T01:36:21+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-08-04T22:56:40+00:00\" \/>\n<meta name=\"author\" content=\"BitcoinToolkit Editorial Team\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"How Bitcoin Transaction Fees Work | BitcoinToolkit\" \/>\n<meta name=\"twitter:description\" content=\"Bitcoin fees depend on transaction virtual size, fee rate and changing demand for block space\u2014not simply the amount sent.\" \/>\n<meta name=\"twitter:label1\" content=\"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi\" \/>\n\t<meta name=\"twitter:data1\" content=\"BitcoinToolkit Editorial Team\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc\" \/>\n\t<meta name=\"twitter:data2\" content=\"17 ph\u00fat\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/bitcointoolkit.top\\\/learn\\\/how-bitcoin-transaction-fees-work\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/bitcointoolkit.top\\\/learn\\\/how-bitcoin-transaction-fees-work\\\/\"},\"author\":{\"name\":\"BitcoinToolkit Editorial Team\",\"@id\":\"https:\\\/\\\/bitcointoolkit.top\\\/#\\\/schema\\\/person\\\/3a6edd68bc83acbe391e282c465316b0\"},\"headline\":\"How Bitcoin Transaction Fees Work\",\"datePublished\":\"2026-07-25T01:36:21+00:00\",\"dateModified\":\"2026-08-04T22:56:40+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/bitcointoolkit.top\\\/learn\\\/how-bitcoin-transaction-fees-work\\\/\"},\"wordCount\":3058,\"articleSection\":[\"\u672a\u5206\u7c7b\"],\"inLanguage\":\"vi\",\"publisher\":{\"@id\":\"https:\\\/\\\/bitcointoolkit.top\\\/vi\\\/#organization\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/bitcointoolkit.top\\\/learn\\\/how-bitcoin-transaction-fees-work\\\/\",\"url\":\"https:\\\/\\\/bitcointoolkit.top\\\/learn\\\/how-bitcoin-transaction-fees-work\\\/\",\"name\":\"How Bitcoin Transaction Fees Work | BitcoinToolkit\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/bitcointoolkit.top\\\/#website\"},\"datePublished\":\"2026-07-25T01:36:21+00:00\",\"dateModified\":\"2026-08-04T22:56:40+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/bitcointoolkit.top\\\/#\\\/schema\\\/person\\\/3a6edd68bc83acbe391e282c465316b0\"},\"description\":\"Bitcoin fees depend on transaction virtual size, fee rate and changing demand for block space\u2014not simply the amount sent.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/bitcointoolkit.top\\\/learn\\\/how-bitcoin-transaction-fees-work\\\/#breadcrumb\"},\"inLanguage\":\"vi\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/bitcointoolkit.top\\\/learn\\\/how-bitcoin-transaction-fees-work\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/bitcointoolkit.top\\\/learn\\\/how-bitcoin-transaction-fees-work\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/bitcointoolkit.top\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"How Bitcoin Transaction Fees Work\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/bitcointoolkit.top\\\/#website\",\"url\":\"https:\\\/\\\/bitcointoolkit.top\\\/\",\"name\":\"BitcoinToolkit\",\"description\":\"Crypto tools, coin guides and practical blockchain knowledge.\",\"alternateName\":\"Bitcoin Toolkit\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/bitcointoolkit.top\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"vi\",\"publisher\":{\"@id\":\"https:\\\/\\\/bitcointoolkit.top\\\/vi\\\/#organization\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/bitcointoolkit.top\\\/#\\\/schema\\\/person\\\/3a6edd68bc83acbe391e282c465316b0\",\"name\":\"BitcoinToolkit Editorial Team\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"vi\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/09bb340fde5ded6d5007f57c9d8bb0b6ffce10c727945a5445ee820491c5aead?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/09bb340fde5ded6d5007f57c9d8bb0b6ffce10c727945a5445ee820491c5aead?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/09bb340fde5ded6d5007f57c9d8bb0b6ffce10c727945a5445ee820491c5aead?s=96&d=mm&r=g\",\"caption\":\"BitcoinToolkit Editorial Team\"},\"description\":\"The publishing identity used for BitcoinToolkit material reviewed and released by the site owner. It is not presented as a named external expert. The team is responsible for source selection, technical checks, updates and corrections.\",\"sameAs\":[\"https:\\\/\\\/bitcointoolkit.top\"],\"url\":\"https:\\\/\\\/bitcointoolkit.top\\\/vi\\\/learn\\\/author\\\/bitcointoolkit-editorial-team\\\/\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/bitcointoolkit.top\\\/vi\\\/#organization\",\"name\":\"BitcoinToolkit\",\"alternateName\":\"Bitcoin Toolkit\",\"url\":\"https:\\\/\\\/bitcointoolkit.top\\\/vi\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Ph\u00ed Giao D\u1ecbch Bitcoin Ho\u1ea1t \u0110\u1ed9ng Nh\u01b0 Th\u1ebf N\u00e0o | BitcoinToolkit","description":"Ph\u00ed Bitcoin ph\u1ee5 thu\u1ed9c v\u00e0o k\u00edch th\u01b0\u1edbc \u1ea3o c\u1ee7a giao d\u1ecbch, t\u1ef7 l\u1ec7 ph\u00ed v\u00e0 nhu c\u1ea7u thay \u0111\u1ed5i v\u1ec1 kh\u00f4ng gian kh\u1ed1i\u2014kh\u00f4ng ch\u1ec9 \u0111\u01a1n gi\u1ea3n l\u00e0 s\u1ed1 ti\u1ec1n \u0111\u01b0\u1ee3c g\u1eedi.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/bitcointoolkit.top\/vi\/learn\/how-bitcoin-transaction-fees-work\/","og_locale":"vi","og_type":"article","og_title":"How Bitcoin Transaction Fees Work | BitcoinToolkit","og_description":"Bitcoin fees depend on transaction virtual size, fee rate and changing demand for block space\u2014not simply the amount sent.","og_url":"https:\/\/bitcointoolkit.top\/vi\/learn\/how-bitcoin-transaction-fees-work\/","og_site_name":"BitcoinToolkit","article_published_time":"2026-07-25T01:36:21+00:00","article_modified_time":"2026-08-04T22:56:40+00:00","author":"BitcoinToolkit Editorial Team","twitter_card":"summary_large_image","twitter_title":"How Bitcoin Transaction Fees Work | BitcoinToolkit","twitter_description":"Bitcoin fees depend on transaction virtual size, fee rate and changing demand for block space\u2014not simply the amount sent.","twitter_misc":{"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi":"BitcoinToolkit Editorial Team","\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc":"17 ph\u00fat"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/bitcointoolkit.top\/learn\/how-bitcoin-transaction-fees-work\/#article","isPartOf":{"@id":"https:\/\/bitcointoolkit.top\/learn\/how-bitcoin-transaction-fees-work\/"},"author":{"name":"BitcoinToolkit Editorial Team","@id":"https:\/\/bitcointoolkit.top\/#\/schema\/person\/3a6edd68bc83acbe391e282c465316b0"},"headline":"How Bitcoin Transaction Fees Work","datePublished":"2026-07-25T01:36:21+00:00","dateModified":"2026-08-04T22:56:40+00:00","mainEntityOfPage":{"@id":"https:\/\/bitcointoolkit.top\/learn\/how-bitcoin-transaction-fees-work\/"},"wordCount":3058,"articleSection":["\u672a\u5206\u7c7b"],"inLanguage":"vi","publisher":{"@id":"https:\/\/bitcointoolkit.top\/vi\/#organization"}},{"@type":"WebPage","@id":"https:\/\/bitcointoolkit.top\/learn\/how-bitcoin-transaction-fees-work\/","url":"https:\/\/bitcointoolkit.top\/learn\/how-bitcoin-transaction-fees-work\/","name":"Ph\u00ed Giao D\u1ecbch Bitcoin Ho\u1ea1t \u0110\u1ed9ng Nh\u01b0 Th\u1ebf N\u00e0o | BitcoinToolkit","isPartOf":{"@id":"https:\/\/bitcointoolkit.top\/#website"},"datePublished":"2026-07-25T01:36:21+00:00","dateModified":"2026-08-04T22:56:40+00:00","author":{"@id":"https:\/\/bitcointoolkit.top\/#\/schema\/person\/3a6edd68bc83acbe391e282c465316b0"},"description":"Ph\u00ed Bitcoin ph\u1ee5 thu\u1ed9c v\u00e0o k\u00edch th\u01b0\u1edbc \u1ea3o c\u1ee7a giao d\u1ecbch, t\u1ef7 l\u1ec7 ph\u00ed v\u00e0 nhu c\u1ea7u thay \u0111\u1ed5i v\u1ec1 kh\u00f4ng gian kh\u1ed1i\u2014kh\u00f4ng ch\u1ec9 \u0111\u01a1n gi\u1ea3n l\u00e0 s\u1ed1 ti\u1ec1n \u0111\u01b0\u1ee3c g\u1eedi.","breadcrumb":{"@id":"https:\/\/bitcointoolkit.top\/learn\/how-bitcoin-transaction-fees-work\/#breadcrumb"},"inLanguage":"vi","potentialAction":[{"@type":"ReadAction","target":["https:\/\/bitcointoolkit.top\/learn\/how-bitcoin-transaction-fees-work\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/bitcointoolkit.top\/learn\/how-bitcoin-transaction-fees-work\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/bitcointoolkit.top\/"},{"@type":"ListItem","position":2,"name":"How Bitcoin Transaction Fees Work"}]},{"@type":"WebSite","@id":"https:\/\/bitcointoolkit.top\/#website","url":"https:\/\/bitcointoolkit.top\/","name":"BitcoinToolkit","description":"C\u00f4ng c\u1ee5 ti\u1ec1n \u0111i\u1ec7n t\u1eed, h\u01b0\u1edbng d\u1eabn v\u1ec1 coin v\u00e0 ki\u1ebfn th\u1ee9c blockchain th\u1ef1c t\u1ebf.","alternateName":"Bitcoin Toolkit","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/bitcointoolkit.top\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"vi","publisher":{"@id":"https:\/\/bitcointoolkit.top\/vi\/#organization"}},{"@type":"Person","@id":"https:\/\/bitcointoolkit.top\/#\/schema\/person\/3a6edd68bc83acbe391e282c465316b0","name":"Nh\u00f3m Bi\u00ean T\u1eadp BitcoinToolkit","image":{"@type":"ImageObject","inLanguage":"vi","@id":"https:\/\/secure.gravatar.com\/avatar\/09bb340fde5ded6d5007f57c9d8bb0b6ffce10c727945a5445ee820491c5aead?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/09bb340fde5ded6d5007f57c9d8bb0b6ffce10c727945a5445ee820491c5aead?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/09bb340fde5ded6d5007f57c9d8bb0b6ffce10c727945a5445ee820491c5aead?s=96&d=mm&r=g","caption":"BitcoinToolkit Editorial Team"},"description":"Danh t\u00ednh xu\u1ea5t b\u1ea3n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho t\u00e0i li\u1ec7u BitcoinToolkit \u0111\u01b0\u1ee3c ch\u1ee7 s\u1edf h\u1eefu trang web xem x\u00e9t v\u00e0 ph\u00e1t h\u00e0nh. N\u00f3 kh\u00f4ng \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y nh\u01b0 m\u1ed9t chuy\u00ean gia b\u00ean ngo\u00e0i c\u00f3 t\u00ean tu\u1ed5i. Nh\u00f3m ch\u1ecbu tr\u00e1ch nhi\u1ec7m l\u1ef1a ch\u1ecdn ngu\u1ed3n, ki\u1ec3m tra k\u1ef9 thu\u1eadt, c\u1eadp nh\u1eadt v\u00e0 s\u1eeda ch\u1eefa.","sameAs":["https:\/\/bitcointoolkit.top"],"url":"https:\/\/bitcointoolkit.top\/vi\/learn\/author\/bitcointoolkit-editorial-team\/"},{"@type":"Organization","@id":"https:\/\/bitcointoolkit.top\/vi\/#organization","name":"BitcoinToolkit","alternateName":"Bitcoin Toolkit","url":"https:\/\/bitcointoolkit.top\/vi\/"}]}},"_links":{"self":[{"href":"https:\/\/bitcointoolkit.top\/vi\/wp-json\/wp\/v2\/posts\/8","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bitcointoolkit.top\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bitcointoolkit.top\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bitcointoolkit.top\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bitcointoolkit.top\/vi\/wp-json\/wp\/v2\/comments?post=8"}],"version-history":[{"count":1,"href":"https:\/\/bitcointoolkit.top\/vi\/wp-json\/wp\/v2\/posts\/8\/revisions"}],"predecessor-version":[{"id":738,"href":"https:\/\/bitcointoolkit.top\/vi\/wp-json\/wp\/v2\/posts\/8\/revisions\/738"}],"wp:attachment":[{"href":"https:\/\/bitcointoolkit.top\/vi\/wp-json\/wp\/v2\/media?parent=8"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bitcointoolkit.top\/vi\/wp-json\/wp\/v2\/categories?post=8"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bitcointoolkit.top\/vi\/wp-json\/wp\/v2\/tags?post=8"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}