<\/span><\/h3>\r\n\r\n\r\n\r\nHi\u1ec3u \u0111\u01a1n gi\u1ea3n th\u00ec Chainlink l\u00e0 m\u1ed9t gi\u1ea3i ph\u00e1p k\u1ebft n\u1ed1i tr\u00ean n\u1ec1n t\u1ea3ng blockchain hi\u1ec7n nay. M\u1ee5c \u0111\u00edch c\u1ee7a Chainlink l\u00e0 k\u1ebft n\u1ed1i c\u00e1c ngu\u1ed3n d\u1eef li\u1ec7u b\u00ean ngo\u00e0i v\u00e0o b\u00ean trong smart contract v\u00e0 ng\u01b0\u1ee3c l\u1ea1i. T\u1ea1i sao l\u1ea1i c\u1ea7n ph\u1ea3i c\u00f3 s\u1ef1 k\u1ebft n\u1ed1i v\u1edbi c\u00e1c ngu\u1ed3n d\u1eef li\u1ec7u nh\u01b0 v\u1eady?<\/p>\r\n\r\n\r\n\r\n
Ch\u00fang ta c\u00f3 th\u1ec3 hi\u1ec3u r\u1eb1ng v\u1edbi m\u1ed7i m\u1ed9t n\u1ec1n t\u1ea3ng v\u1ec1 blockchain nh\u01b0 hi\u1ec7n nay (k\u1ec3 c\u1ea3 l\u00e0 Bitcoin, Ethereum hay b\u1ea5t c\u1ee9 m\u1ed9t blockchain n\u00e0o kh\u00e1c) hi\u1ec7n t\u1ea1i m\u1edbi ch\u1ec9 d\u1eebng \u1edf vi\u1ec7c k\u1ebft n\u1ed1i d\u1eef li\u1ec7u n\u1ed9i b\u1ed9. T\u1ee9c l\u00e0 c\u00e1c d\u1eef li\u1ec7u b\u00ean trong ch\u00ednh blockchain \u0111\u00f3 c\u00f3 th\u1ec3 l\u00e0m vi\u1ec7c \u0111\u01b0\u1ee3c v\u1edbi nhau. \u0110i\u1ec1u n\u00e0y s\u1ebd g\u1eb7p tr\u1edf ng\u1ea1i \u0111\u00f3 l\u00e0 khi n\u1ec1n t\u1ea3ng blockchain \u0111\u00f3 ch\u01b0a \u0111\u1ee7 l\u1edbn, \u0111\u1ed9 ph\u1ee7 ch\u01b0a \u0111\u1ee7 r\u1ed9ng th\u00ec vi\u1ec7c ch\u1ec9 s\u1eed d\u1ee5ng c\u00e1c ngu\u1ed3n d\u1eef li\u1ec7u b\u00ean trong blockchain \u0111\u00f3 l\u00e0 kh\u00f4ng \u0111\u1ee7.\u00a0<\/p>\r\n\r\n\r\n\r\n
V\u1edbi m\u1ed7i m\u1ed9t \u1ee9ng d\u1ee5ng \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n tr\u00ean blockchain th\u00ec n\u00f3 c\u1ea7n th\u00eam c\u00e1c ngu\u1ed3n d\u1eef li\u1ec7u t\u1eeb b\u00ean ngo\u00e0i kh\u00e1c n\u1eefa. V\u00ed d\u1ee5 b\u1ea1n c\u00f3 d\u1ef1 \u0111\u1ecbnh l\u1eadp m\u1ed9t s\u00e0n DEX v\u00e0 \u1edf \u0111\u00f3 b\u1ea1n s\u1ebd cho ph\u00e9p mua b\u00e1n c\u00e1c \u0111\u1ed3ng crypto nh\u01b0 USDT ch\u1eb3ng h\u1ea1n. V\u1eady b\u1ea1n l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 bi\u1ebft \u0111\u01b0\u1ee3c t\u1ef7 gi\u00e1 USD\/VND nh\u01b0 th\u1ebf n\u00e0o l\u00e0 ph\u00f9 h\u1ee3p? B\u1ea1n kh\u00f4ng th\u1ec3 c\u1eadp nh\u1eadt b\u1eb1ng tay \u0111\u01b0\u1ee3c \u0111\u00fang kh\u00f4ng? Ch\u1eafc ch\u1eafn l\u00e0 kh\u00f4ng r\u1ed3i v\u00ec t\u1ef7 gi\u00e1 n\u00f3 bi\u1ebfn \u0111\u1ed9ng li\u00ean t\u1ee5c theo t\u1eebng gi\u00e2y m\u1ed9t.<\/p>\r\n\r\n\r\n\r\n
May m\u1eafn thay l\u00e0 c\u00e1c h\u1ec7 th\u1ed1ng t\u00e0i truy\u1ec1n th\u1ed1ng c\u00f3 th\u1ec3 cung c\u1ea5p \u0111\u01b0\u1ee3c nh\u1eefng d\u1eef li\u1ec7u n\u00e0y. V\u00e0 \u0111\u01b0\u01a1ng nhi\u00ean d\u1eef li\u1ec7u \u0111\u00f3 s\u1ebd \u0111\u01b0\u1ee3c cung c\u1ea5p t\u1ef1 \u0111\u1ed9ng v\u00e0 li\u00ean t\u1ee5c th\u00f4ng qua m\u1ed9t c\u1ed5ng k\u1ebft n\u1ed1i m\u00e0 ch\u00fang ta t\u1ea1m g\u1ecdi l\u00e0 API. V\u00ed d\u1ee5 khi b\u1ea1n c\u1ea7n l\u1ea5y m\u1ed9t d\u1eef li\u1ec7u n\u00e0o \u0111\u00f3 t\u1eeb ng\u00e2n h\u00e0ng th\u00ec b\u1ea3n th\u00e2n ng\u00e2n h\u00e0ng s\u1ebd m\u1edf API n\u00e0y cho b\u1ea1n \u0111\u1ec3 b\u1ea1n vi\u1ebft tr\u00ecnh thu th\u1eadp (crawl) th\u00f4ng tin \u0111\u00f3 v\u1ec1 h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n.<\/p>\r\n\r\n\r\n\r\n
Nh\u01b0ng l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 nh\u1eefng d\u1eef li\u1ec7u b\u1ea1n thu th\u1eadp \u0111\u01b0\u1ee3c t\u1eeb h\u1ec7 th\u1ed1ng t\u00e0i ch\u00ednh truy\u1ec1n th\u1ed1ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c tr\u00ean n\u1ec1n t\u1ea3ng blockchain? \u0110\u00f3 ch\u00ednh l\u00e0 t\u00e1c d\u1ee5ng c\u1ee7a Chainlink. N\u00f3 l\u00e0 c\u1ea7u n\u1ed1i gi\u1eefa c\u00e1c ngu\u1ed3n d\u1eef li\u1ec7u n\u00e0y v\u1edbi smart contract b\u00ean trong blockchain.<\/p>\r\n\r\n\r\n\r\n![\"Chainlink](\"https:\/\/lh6.googleusercontent.com\/pYfjyHPMIPWItX7hkahm8qZqLqyjXRpg3J-8gbHEX2xJ2Hr0193PgEmzY_RJynckyDsNFsuHxiTiszOES9Fz99X87z2kURh8UiE4aQye5yFTyJeEVpU1J2qRz79Qgglv9NL78WJY\")
<\/figure>\r\n\r\n\r\n\r\nChainlink gi\u00fap k\u1ebft n\u1ed1i c\u00e1c ngu\u1ed3n d\u1eef li\u1ec7u b\u00ean ngo\u00e0i blockchain.<\/em><\/p>\r\n\r\n\r\n\r\n<\/span>C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Chainlink<\/strong><\/span><\/h2>\r\n\r\n\r\n\r\n\u0110\u1ec3 ho\u00e0n th\u00e0nh qu\u00e1 tr\u00ecnh k\u1ebft n\u1ed1i c\u00e1c ngu\u1ed3n d\u1eef li\u1ec7u b\u00ean ngo\u00e0i v\u00e0o chu\u1ed7i, Chainlink s\u1ebd x\u1eed l\u00fd theo hai pha d\u01b0\u1edbi \u0111\u00e2y:<\/p>\r\n\r\n\r\n\r\n
<\/span>On-chain<\/strong><\/span><\/h3>\r\n\r\n\r\n\r\nOn-chain l\u00e0 ch\u1ee9c n\u0103ng x\u1eed l\u00fd tr\u00ean chu\u1ed7i blockchain c\u1ee7a Chainlink. V\u00ed d\u1ee5 b\u1ea1n \u0111ang ph\u00e1t tri\u1ec3n m\u1ed9t \u1ee9ng d\u1ee5ng tr\u00ean n\u1ec1n t\u1ea3ng blockchain v\u00e0 b\u00e2y gi\u1edd b\u1ea1n c\u1ea7n m\u1ed9t ngu\u1ed3n d\u1eef li\u1ec7u kh\u00e1c t\u1eeb b\u00ean ngo\u00e0i (gi\u1ea3 d\u1ee5 ng\u00e2n h\u00e0ng Vietcombank \u0111i ch\u1eb3ng h\u1ea1n). L\u00fac n\u00e0y b\u1ea1n s\u1ebd th\u1ef1c hi\u1ec7n c\u00e1c b\u01b0\u1edbc sau:<\/p>\r\n\r\n\r\n\r\n
\r\n- B\u01b0\u1edbc 1: B\u1ea1n g\u1eedi m\u1ed9t y\u00eau c\u1ea7u tr\u00ean chu\u1ed7i t\u1edbi m\u1ea1ng l\u01b0\u1edbi c\u1ee7a Chainlink v\u00e0 n\u00f3i r\u00f5 y\u00eau c\u1ea7u c\u1ee7a b\u1ea1n l\u00e0 g\u00ec, b\u1ea1n c\u1ea7n ngu\u1ed3n d\u1eef li\u1ec7u n\u00e0o \u2026<\/li>\r\n
- B\u01b0\u1edbc 2: Khi m\u1ea1ng l\u01b0\u1edbi c\u1ee7a Chainlink nh\u1eadn \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u c\u1ee7a b\u1ea1n, n\u00f3 s\u1ebd t\u1ea1o ra m\u1ed9t d\u1ea1ng h\u1ee3p \u0111\u1ed3ng ri\u00eang \u0111\u1ec3 x\u1eed l\u00fd y\u00eau c\u1ea7u \u0111\u00f3 c\u1ee7a b\u1ea1n. V\u1edbi nh\u1eefng h\u1ee3p \u0111\u1ed3ng n\u00e0y m\u1ea1ng l\u01b0\u1edbi c\u1ee7a Chainlink s\u1ebd tr\u1ea3i qua ba b\u01b0\u1edbc bao g\u1ed3m: l\u1ef1a ch\u1ecdn Oracle, t\u1ed5ng h\u1ee3p d\u1eef li\u1ec7u v\u00e0 tr\u1ea3 v\u1ec1 d\u1eef li\u1ec7u cho b\u1ea1n.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n
![\"Ch\u1ee9c](\"https:\/\/lh3.googleusercontent.com\/iNTGrclSsJThKey0IlTmoUZHZ_4hBaO_1MGFUrc48-mWn6TJADs5_ixEAj1SJOWtQezpFm2lbQ3Suu5ltfo47k8mfL6EyPwYVggF4CjpuRbozP9Zcx-ede6welo9Yo9skG1Cs_mp\")
<\/figure>\r\n\r\n\r\n\r\nCh\u1ee9c n\u0103ng on-chain c\u1ee7a Chainlink.<\/em><\/p>\r\n\r\n\r\n\r\n<\/span>Off-chain<\/strong><\/span><\/h3>\r\n\r\n\r\n\r\nOff-chain l\u00e0 ch\u1ee9c n\u0103ng x\u1eed l\u00fd ngo\u00e0i chu\u1ed7i. T\u1ee9c l\u00e0 c\u00e1ch \u0111\u1ec3 Chainlink thu th\u1eadp c\u00e1c ngu\u1ed3n d\u1eef li\u1ec7u t\u1eeb b\u00ean ngo\u00e0i m\u00e0 b\u1ea1n c\u1ea7n v\u00e0 y\u00eau c\u1ea7u. \u0110\u1ec3 l\u00e0m \u0111\u01b0\u1ee3c \u0111i\u1ec1u \u0111\u00f3 th\u00ec Chainlink t\u1ea1o ra c\u00e1c node off-chain. Node n\u00e0y v\u1eeba l\u00e0m nhi\u1ec7m v\u1ee5 k\u1ebft n\u1ed1i thu th\u1eadp d\u1eef li\u1ec7u off-chain, v\u1eeba k\u1ebft n\u1ed1i v\u1edbi m\u1ea1ng l\u01b0\u1edbi.\u00a0<\/p>\r\n\r\n\r\n\r\n
D\u1eef li\u1ec7u sau khi thu th\u1eadp \u0111\u01b0\u1ee3c qua c\u00e1c node s\u1ebd \u0111\u01b0\u1ee3c \u0111\u1ea9y \u0111\u1ebfn Chainlink Core. L\u00fac n\u00e0y vi\u1ec7c thu th\u1eadp v\u00e0 g\u1eedi d\u1eef li\u1ec7u \u0111\u00e3 th\u00e0nh c\u00f4ng v\u00e0 nh\u1eefng node n\u00e0y s\u1ebd \u0111\u01b0\u1ee3c nh\u1eadn ph\u1ea7n th\u01b0\u1edfng l\u00e0 \u0111\u1ed3ng LINK. T\u1ea1i \u0111\u00e2y Chainlink Core s\u1ebd x\u1eed l\u00fd r\u1ed3i chuy\u1ec3n tr\u1ea3 ch\u00fang t\u1edbi h\u1ee3p \u0111\u1ed3ng qu\u1ea3n tr\u1ecb on-chain \u0111\u1ec3 k\u1ebft h\u1ee3p l\u1ea1i k\u1ebft qu\u1ea3 tr\u01b0\u1edbc khi tr\u1ea3 v\u1ec1 k\u1ebft qu\u1ea3 cu\u1ed1i c\u00f9ng cho b\u1ea1n.<\/p>\r\n\r\n\r\n\r\n![\"Ch\u1ee9c](\"https:\/\/lh6.googleusercontent.com\/bD35YZ1kwFv26mYtI1LT5--mtTKaskAuO7EwXc1JkE2UylXpKq93USoJU32hc1lJEbUXv_5TgMIMpKmkuv1c-8IBdY-PK7NyFklThnMrySKGKvK9GxEs8Ylic8sf8-IP1sNzL6fe\")
<\/figure>\r\n\r\n\r\n\r\nCh\u1ee9c n\u0103ng off-chain c\u1ee7a Chainlink.<\/em><\/p>\r\n\r\n\r\n\r\n<\/span>\u0110\u1ed3ng coin LINK<\/strong><\/span><\/h2>\r\n\r\n\r\n\r\n<\/span>Token LINK \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho vi\u1ec7c g\u00ec?<\/strong><\/span><\/h3>\r\n\r\n\r\n\r\nTheo th\u00f4ng b\u00e1o m\u1edbi nh\u1ea5t t\u1eeb Chainlink token LINK l\u00e0 thu\u1ed9c lo\u1ea1i ERC677. Tuy nhi\u00ean n\u00f3 \u0111\u01b0\u1ee3c k\u1ebf th\u1eeba ch\u1ee9c n\u0103ng t\u1eeb ti\u00eau chu\u1ea9n token ERC20. N\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 thanh to\u00e1n cho c\u00e1c node operator \u0111\u1ec3 truy xu\u1ea5t d\u1eef li\u1ec7u cho c\u00e1c h\u1ee3p \u0111\u1ed3ng th\u00f4ng minh. \u0110\u1ed3ng th\u1eddi n\u00f3 c\u0169ng \u0111\u01b0\u1ee3c d\u00f9ng cho c\u00e1c kho\u1ea3n \u0111\u1eb7t c\u1ecdc b\u1edfi c\u00e1c node operator \u0111\u1eb7t theo y\u00eau c\u1ea7u c\u1ee7a ng\u01b0\u1eddi t\u1ea1o h\u1ee3p \u0111\u1ed3ng.<\/p>\r\n\r\n\r\n\r\n
<\/span>Lo\u1ea1i v\u00ed \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u01b0u tr\u1eef LINK<\/strong><\/span><\/h3>\r\n\r\n\r\n\r\nNh\u01b0 v\u1eady c\u00f3 ngh\u0129a l\u00e0 b\u1ea5t k\u1ef3 v\u00ed n\u00e0o ch\u1ea5p nh\u1eadn d\u1ea1ng token ERC20 s\u1ebd c\u00f3 th\u1ec3 d\u00f9ng \u0111\u1ec3 l\u01b0u tr\u1eef \u0111\u1ed3ng LINK. Ti\u00eau chu\u1ea9n ERC677 m\u00e0 LINK tri\u1ec3n khai v\u1eabn gi\u1eef t\u1ea5t c\u1ea3 c\u00e1c ch\u1ee9c n\u0103ng theo ti\u00eau chu\u1ea9n ERC20.<\/p>\r\n\r\n\r\n\r\n
<\/span>Bi\u1ebfn \u0111\u1ed9ng t\u1ef7 gi\u00e1<\/strong><\/span><\/h3>\r\n\r\n\r\n\r\n![\"Bi\u1ebfn](\"https:\/\/lh5.googleusercontent.com\/yZewQKdzUToP7uO_4TnOaPdaoFtSywxsj-WU7OJt9I8gEKeyTEtmrsLLAH0luYQEZvhGiAh7kULtmtgKTtC_cERPtOFU-O2u_k4G-IsXz3Beei-1D7u1VcXBpyTAoqjcC9OXOYhx\")
<\/figure>\r\n\r\n\r\n\r\nBi\u1ebfn \u0111\u1ed9ng t\u1ef7 gi\u00e1 \u0111\u1ed3ng LINK.<\/em><\/p>\r\n\r\n\r\n\r\nTrong th\u1eddi \u0111i\u1ec3m t\u1eeb th\u00e1ng 7 \u0111\u1ebfn th\u00e1ng 8 v\u1eeba qua, \u0111\u1ed3ng LINK c\u00f3 m\u1ed9t c\u00fa v\u01b0\u1ee3t r\u00e0o ngo\u1ea1n m\u1ee5c. Th\u1eddi \u0111i\u1ec3m cao nh\u1ea5t 1 \u0111\u1ed3ng LINK c\u00f3 gi\u00e1 tr\u1ecb ~ $19. C\u00f3 l\u1ebd LINK \u0111ang c\u00f3 tham v\u1ecdng so\u00e1n ng\u00f4i XRP trong th\u1eddi gian t\u1edbi khi m\u00e0 d\u1ef1a theo v\u1ed1n ho\u00e1 th\u1ecb tr\u01b0\u01a1ng LINK ch\u1ec9 \u0111\u1ee9ng sau XRP c\u00f3 hai b\u1eadc m\u00e0 th\u00f4i.<\/p>\r\n\r\n\r\n\r\n
<\/span>K\u1ebft lu\u1eadn<\/strong><\/span><\/h2>\r\n\r\n\r\n\r\nChainlink theo quan \u0111i\u1ec3m c\u00e1 nh\u00e2n m\u00ecnh l\u00e0 m\u1ed9t d\u1ef1 \u00e1n kh\u00e1 th\u00fa v\u1ecb. T\u00ednh \u0111\u1ebfn th\u1eddi \u0111i\u1ec3m hi\u1ec7n t\u1ea1i th\u00ec theo nh\u01b0 c\u00f4ng b\u1ed1 Chainlink \u0111\u00e3 c\u00f3 th\u1ec3 k\u1ebft n\u1ed1i \u0111\u01b0\u1ee3c v\u1edbi Ethereum, Bitcoin hay Hyperledger smart contract. Trong t\u01b0\u01a1ng lai m\u00ecnh tin l\u00e0 s\u1ed1 l\u01b0\u1ee3ng n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c m\u1edf r\u1ed9ng th\u00eam n\u1eefa.<\/p>\r\n\r\n\r\n\r\n
Khi m\u00e0 blockchain ng\u00e0y c\u00e0ng ph\u00e1t tri\u1ec3n vi\u1ec7c \u0111\u1ed3ng b\u1ed9 v\u1edbi nh\u1eefng ngu\u1ed3n d\u1eef li\u1ec7u hi\u1ec7n c\u00f3 t\u1eeb b\u00ean ngo\u00e0i l\u00e0 m\u1ed9t \u0111i\u1ec1u c\u1ea7n thi\u1ebft. L\u00fac n\u00e0y v\u1edbi vai tr\u00f2 c\u1ea7u n\u1ed1i Chainlink s\u1ebd chi\u1ebfm \u0111\u01b0\u1ee3c \u01b0u th\u1ebf l\u1edbn trong th\u1ebf gi\u1edbi ti\u1ec1n \u0111i\u1ec7n t\u1eed.<\/p>\r\n\r\n\r\n\r\n
Tuy nhi\u00ean th\u1ecb tr\u01b0\u1eddng n\u00e0o r\u1ed3i c\u0169ng s\u1ebd c\u00f3 c\u1ea1nh tranh v\u00e0 \u0111\u01b0\u01a1ng nhi\u00ean b\u1ea3n th\u00e2n Chainlink kh\u00f4ng th\u1ec3 m\u1ed9t tay che tr\u1eddi nh\u01b0 th\u1ebf \u0111\u01b0\u1ee3c. \u0110\u1eb1ng sau n\u00f3 c\u00f2n c\u00f3 Ripple v\u00e0 nh\u1eefng d\u1ef1 \u00e1n ti\u1ec1n \u0111i\u1ec7n t\u1eed kh\u00e1c. Nh\u01b0ng v\u1edbi v\u1ecb th\u1ebf c\u1ee7a m\u1ed9t trong nh\u1eefng ng\u01b0\u1eddi \u0111i \u0111\u1ea7u th\u00ec h\u1eb3n r\u1eb1ng n\u00f3 s\u1ebd s\u1edbm g\u1eb7t h\u00e1i \u0111\u01b0\u1ee3c nhi\u1ec1u th\u00e0nh qu\u1ea3 h\u01a1n.<\/p>\r\n\r\n\r\n","protected":false},"excerpt":{"rendered":"
Chainlink l\u00e0 m\u1ed9t d\u1ef1 \u00e1n \u0111\u01b0\u1ee3c ICO t\u1eeb n\u0103m 2017. Th\u1eddi gian g\u1ea7n \u0111\u00e2y n\u00f3 \u0111\u01b0\u1ee3c c\u1ed9ng \u0111\u1ed3ng ti\u1ec1n \u0111i\u1ec7n t\u1eed ch\u00fa \u00fd h\u01a1n khi tham gia v\u00e0o DeFi v\u00e0 l\u00e0 n\u1ec1n t\u1ea3ng h\u1ed7 tr\u1ee3 k\u1ebft n\u1ed1i d\u1eef li\u1ec7u cho nhi\u1ec1u \u1ee9ng d\u1ee5ng kh\u00e1c. Trong b\u00e0i n\u00e0y ch\u00fang ta s\u1ebd c\u00f9ng t\u00ecm hi\u1ec3u xem ti\u1ec1m<\/p>\n","protected":false},"author":10,"featured_media":4238,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"elementor_theme","format":"standard","meta":{"footnotes":""},"categories":[21846,1],"tags":[7651,8101,8100,8098,8097],"class_list":{"0":"post-4237","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-tien-dien-tu","8":"category-uncategorized","9":"tag-chainlink","10":"tag-mua-chainlink","11":"tag-mua-link","12":"tag-off-chain","13":"tag-on-chain"},"yoast_head":"\n
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