{"id":6174,"date":"2021-06-21T10:43:03","date_gmt":"2021-06-21T03:43:03","guid":{"rendered":"https:\/\/news.bitcoinvn.io\/?p=6174"},"modified":"2021-06-21T10:43:03","modified_gmt":"2021-06-21T03:43:03","slug":"uu-nhuoc-diem-he-thong-ethereum","status":"publish","type":"post","link":"https:\/\/bitcoinvn.io\/news\/vi\/uu-nhuoc-diem-he-thong-ethereum\/","title":{"rendered":"\u01afu v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a h\u1ec7 th\u1ed1ng Ethereum"},"content":{"rendered":"

L\u1eddi t\u1ef1a c\u1ee7a BVNews: <\/em><\/strong>B\u00e0i vi\u1ebft g\u1ed1c<\/a> c\u1ee7a t\u00e1c gi\u1ea3 Hugo Nguyen<\/a> \u0111\u01b0\u1ee3c \u0111\u0103ng tr\u00ean Group Facebook Ph\u1ed5 c\u1eadp blockchain. BVNews \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1ef1 cho ph\u00e9p c\u1ee7a t\u00e1c gi\u1ea3 \u0111\u1ec3 \u0111\u0103ng t\u1ea3i l\u1ea1i, mang b\u00e0i vi\u1ebft n\u00e0y \u0111\u1ebfn \u0111\u00f4ng \u0111\u1ea3o \u0111\u1ed9c gi\u1ea3 h\u01a1n.<\/em><\/p>\n

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Anh \u0110\u1eb7ng Minh Tu\u1ea5n Vietkey<\/span> c\u00f3 comment trong b\u00e0i tr\u01b0\u1edbc c\u1ee7a m\u00ecnh, h\u1ecfi \u0111\u00e2u l\u00e0 minh ch\u1ee9ng cho s\u1ef1 thi\u1ebfu an to\u00e0n\/\u1ed5n \u0111\u1ecbnh, thi\u1ebfu ph\u00e2n t\u00e1n\/trung l\u1eadp c\u1ee7a Ethereum? \u0110\u00e2u l\u00e0 minh ch\u1ee9ng l\u00e0 \u0111\u00e1nh \u0111\u1ed5i s\u1ef1 an to\u00e0n v\u00e0 trung l\u1eadp (trade-off) \u0111\u1ec3 l\u1ea5y th\u00eam nhi\u1ec1u t\u00ednh n\u0103ng l\u00e0 l\u1ef1a ch\u1ecdn sai l\u1ea7m?<\/p>\n

B\u00ecnh th\u01b0\u1eddng m\u00ecnh kh\u00f4ng qu\u00e1 quan t\u00e2m t\u1edbi c\u00e1c d\u1ef1 \u00e1n blockchain ngo\u00e0i Bitcoin (xem b\u00e0i “Bitcoin v\u00e0 ng\u01b0\u1ee1ng s\u1ed1 Dunbar”<\/a> c\u1ee7a m\u00ecnh \u0111\u1ec3 hi\u1ec3u th\u00eam t\u1ea1i sao m\u00ecnh c\u00f3 quan \u0111i\u1ec3m n\u00e0y). 90% th\u1eddi gian m\u00ecnh b\u1ecf ra hi\u1ec7n t\u1ea1i l\u00e0 v\u00e0o Bitcoin. Nh\u01b0ng anh Tu\u1ea5n \u0111\u00e3 h\u1ecfi th\u00ec m\u00ecnh c\u0169ng chia s\u1ebb m\u1ed9t v\u00e0i v\u00ed d\u1ee5 cho m\u1ecdi ng\u01b0\u1eddi tham kh\u1ea3o. Danh s\u00e1ch d\u01b0\u1edbi \u0111\u00e2y l\u00e0 th\u00f4ng tin ho\u00e0n to\u00e0n public, m\u1ecdi ng\u01b0\u1eddi c\u00f3 th\u1ec3 t\u1ef1 Google ki\u1ec3m ch\u1ee9ng.<\/p>\n<\/div>\n

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S\u1ef0 THI\u1ebeU AN TO\u00c0N: Nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a Ethereum?<\/strong><\/h2>\n

1) DAO hack (2016)<\/strong><\/h2>\n

Reentrancy bug: $50 mil hacked (t\u1ea5t c\u1ea3 tr\u1ecb gi\u00e1 c\u00e1c v\u1ee5 hack trong b\u00e0i n\u00e0y \u0111\u1ec1u t\u00ednh theo th\u1eddi \u0111i\u1ec3m l\u00fac \u0111\u00f3, b\u00e2y gi\u1edd th\u00ec \u0111\u00e3 h\u01a1n r\u1ea5t nhi\u1ec1u).<\/p>\n<\/div>\n

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DAO hack c\u00f3 l\u1ebd l\u00e0 v\u1ee5 hack n\u1ed5i ti\u1ebfng nh\u1ea5t c\u1ee7a Ethereum. \bL\u1ed7 h\u1ed5ng v\u00e0 v\u1ee5 hack n\u00e0y x\u1ea3y ra ngay t\u1eeb thu\u1edf s\u01a1 khai c\u1ee7a Ethereum. L\u1eddi tho\u1ea1i “ok can you guys stop trading” c\u1ee7a Vitalk b\u00e2y gi\u1edd \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t c\u00e2u b\u1ea5t h\u1ee7 (nhi\u1ec1u ph\u1ea7n ch\u00e2m bi\u1ebfm) v\u00ec n\u00f3 \u0111\u1eb7t ra m\u1ed9t ti\u1ec1n l\u1ec7 nguy hi\u1ec3m: m\u1ed9t c\u00e1 nh\u00e2n c\u00f3 th\u1ec3 \u0111\u01a1n ph\u01b0\u01a1ng xo\u00e1 s\u1ed5 d\u1eef li\u1ec7u (“roll back\u201d) m\u1ed9t blockchain c\u00f4ng c\u1ed9ng mang t\u00ednh \u201cqu\u1ed1c t\u1ebf\u201d (\u201cworld computer\u201d) \u0111\u1ec3 vi\u1ebft l\u1ea1i l\u1ecbch s\u1eed, th\u1eadm ch\u00ed l\u00e0 d\u1eebng m\u1ecdi ho\u1ea1t \u0111\u1ed9ng mua b\u00e1n c\u1ee7a Ether tr\u00ean c\u00e1c s\u00e0n trong th\u1eddi \u0111i\u1ec3m \u0111\u00f3 \u0111\u1ec3 thu\u1eadn ti\u1ec7n h\u01a1n cho vi\u1ec7c ng\u01b0\u1eddi \u0111\u00f3 vi\u1ebft l\u1ea1i l\u1ecbch s\u1eed. Vi\u1ec7c n\u00e0y c\u00f3 li\u00ean quan m\u1eadt thi\u1ebft \u0111\u1ebfn chuy\u1ec7n g\u1ea7n 70% c\u00e1c \u0111\u1ed3ng ether \u0111\u00e3 \u0111\u01b0\u1ee3c “\u0111\u00e0o tr\u01b0\u1edbc” v\u00e0 chia \u0111\u1ec1u cho Vitalik, b\u1ea1n b\u00e8 v\u00e0 c\u1ed9ng s\u1ef1. Vi\u1ec7c vi\u1ebft l\u1ea1i l\u1ecbch s\u1eed Ethereum blockchain ch\u00ednh l\u00e0 \u0111\u1ec3 b\u1ea3o v\u1ec7 70% s\u1ed1 l\u01b0\u1ee3ng ether \u0111\u00f3, b\u1ea3o v\u1ec7 l\u1ee3i \u00edch nh\u00f3m c\u1ee7a Vitalik v\u00e0 b\u1ea1n b\u00e8. \u0110\u00e2y l\u00e0 v\u1ebft nh\u01a1 l\u1edbn nh\u1ea5t trong l\u1ecbch s\u1eed Ethereum.<\/p>\n<\/div>\n

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2) Parity hack (2017)<\/strong><\/h2>\n

Poor Solidity visibility rule: x\u1ea5p x\u1ec9 $30mil hacked, $280mil \u0111\u00f3ng b\u0103ng.<\/p>\n<\/div>\n

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M\u1ed9t trong nh\u1eefng v\u00ed \u0111i\u1ec7n t\u1eed ph\u1ed5 bi\u1ebfn nh\u1ea5t c\u1ee7a Ethereum, Parity, \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n b\u1edfi m\u1ed9t trong nh\u1eefng Ethereum co-founders, Gavin Wood, c\u0169ng ch\u00ednh l\u00e0 ng\u01b0\u1eddi \u0111\u1ec1 xu\u1ea5t ra ng\u00f4n ng\u1eef l\u1eadp tr\u00ecnh Solidity v\u00e0 gi\u00fap tri\u1ec3n khai n\u00f3, \u0111\u00e3 b\u1ecb hacker t\u1eadn d\u1ee5ng m\u1ed9t l\u1ed7 h\u1ed5ng trong v\u00ed multisig, l\u00e0m cho $280mil \u201c\u0111\u00f3ng b\u0103ng\u201d, t\u1eafc kh\u00f4ng l\u1ea5y ra \u0111\u01b0\u1ee3c. Ngo\u00e0i ra c\u00f2n chi\u1ebfm \u0111o\u1ea1t $30mil c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.\u2028\u2028V\u1ee5 n\u00e0y c\u00f2n minh ch\u1ee9ng cho th\u1ea5y, m\u1ed9t blockchain c\u00f3 th\u1ec3 qu\u1ea3ng b\u00e1 nhi\u1ec1u t\u00ednh n\u0103ng h\u1ee3p \u0111\u1ed3ng th\u00f4ng minh (smart contract), ch\u1ea1y nhanh g\u1ea5p 10 Bitcoin n\u00e0y kia. Nh\u01b0ng c\u00e1i h\u1ee3p \u0111\u1ed3ng th\u00f4ng minh \u0111\u01a1n gi\u1ea3n nh\u1ea5t l\u00e0 v\u00ed multisig c\u00f2n kh\u00f4ng \u0111\u1ea3m b\u1ea3o \u0111\u01b0\u1ee3c \u0111\u1ed9 an to\u00e0n, th\u00ec c\u00f3 l\u1ebd c\u0169ng kh\u00f4ng n\u00ean b\u00e0n \u0111\u1ebfn nh\u1eefng chuy\u1ec7n qu\u00e1 cao si\u00eau. Turing-completeness th\u1ebf n\u00e0y, ch\u1eef k\u00fd thu\u1eadt to\u00e1n BLS th\u1ebf kia.<\/p>\n<\/div>\n

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3) \u201dUnannounced hard fork\u201d (2020) (hark fork<\/a> b\u1ea5t th\u00ecnh l\u00ecnh)<\/strong><\/h2>\n<\/div>\n
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Ng\u00e0y 11 th\u00e1ng 11 n\u0103m 2020, h\u1ec7 th\u1ed1ng Ethereum s\u1eadp ho\u00e0n to\u00e0n. C\u00e1c \u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t Ethereum nh\u01b0 Metamask, MakerDAO, Uniswap, Compound v\u00e0 MyCrypto \u0111\u1ec1u ng\u1ecfm c\u1ee7 t\u1ecfi. Binance ng\u1eebng giao d\u1ecbch Ether v\u00ec ph\u00e1t hi\u1ec7n m\u00e2u thu\u1eabn th\u00f4ng tin h\u1ec7 th\u1ed1ng.<\/p>\n<\/div>\n

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Ho\u00e1 ra l\u00e0 chi\u1ebfc v\u00ed ph\u1ed5 bi\u1ebfn nh\u1ea5t Ethereum, geth (80% th\u1ecb ph\u1ea7n), \u0111\u00e3\u2026 v\u00f4 t\u00ecnh t\u00e1ch Ethereum blockchain ra l\u00e0m hai. Vi\u1ec7c n\u00e0y l\u00e0m cho m\u1ed9t \u0111\u1ed3ng ti\u1ec1n Ether c\u00f3 th\u1ec3 ti\u00eau \u0111\u01b0\u1ee3c 2 n\u01a1i kh\u00e1c nhau trong th\u1eddi \u0111i\u1ec3m \u0111\u00f3 (double-spent), m\u1ed9t trong nh\u1eefng \u0111i\u1ec1u m\u00e0 blockchain sinh ra \u0111\u1ec3 gi\u1ea3i quy\u1ebft.<\/p>\n<\/div>\n

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L\u00fd do c\u1ee7a vi\u1ec7c blockchain b\u1ecb t\u00e1ch \u0111\u00f4i n\u00e0y, l\u00e0 v\u00ec c\u00e1c l\u1eadp tr\u00ecnh vi\u00ean Ethereum, tr\u01b0\u1edbc \u0111\u00f3 v\u00e0i th\u00e1ng ph\u00e1t hi\u1ec7n m\u1ed9t l\u1ed7i b\u1ea3o m\u1eadt v\u00f4 c\u00f9ng nghi\u00eam tr\u1ecdng (l\u1ed7 h\u1ed5ng n\u00e0y \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh t\u1eeb m\u1ed9t n\u00e2ng c\u1ea5p Ethereum t\u1eeb n\u0103m 2019), \u0111\u00e3 \u201cl\u1eb3ng l\u1eb7ng\u201d v\u00e1 l\u1ed7 h\u1ed5ng n\u00e0y trong phi\u00ean b\u1ea3n m\u1edbi c\u1ee7a v\u00ed geth m\u00e0 kh\u00f4ng th\u00f4ng b\u00e1o cho c\u00e1c \u0111\u01a1n v\u1ecb t\u1ed5 ch\u1ee9c li\u00ean quan. V\u00ec h\u1ecd l\u1eb3ng l\u1eb7ng s\u1eeda l\u1ed7i n\u00e2ng c\u1ea5p kh\u00f4ng th\u00f4ng b\u00e1o, c\u00e1c th\u00e0nh vi\u00ean kh\u00e1c trong c\u1ed9ng \u0111\u1ed3ng kh\u00f4ng bi\u1ebft v\u1eabn ch\u1ea1y nh\u1eefng phi\u00ean b\u1ea3n c\u0169 c\u1ee7a geth. Hai phi\u00ean b\u1ea3n geth kh\u00e1c nhau \u0111\u00e3 g\u00e2y m\u00e2u thu\u1eabn th\u00f4ng tin giao d\u1ecbch, d\u1eabn \u0111\u1ebfn vi\u1ec7c blockchain c\u1ee7a Ethereum b\u1ecb t\u00e1ch ra l\u00e0m \u0111\u00f4i.<\/p>\n<\/div>\n

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V\u00e2ng, qu\u00e1 nhi\u1ec1u \u0111i\u1ec1u nguy hi\u1ec3m v\u00e0 \u0111\u00e1ng n\u00f3i \u1edf \u0111\u00e2y. T\u1ea1i sao l\u1ed7 h\u1ed5ng nghi\u00eam tr\u1ecdng l\u1ea1i l\u1ecdt \u0111\u01b0\u1ee3c v\u00e0o ph\u1ea7n m\u1ec1m tr\u1ecdng y\u1ebfu nh\u1ea5t c\u1ee7a Ethereum (consensus layer) n\u0103m 2019? T\u1ea1i sao g\u1ea7n 2 n\u0103m tr\u1eddi m\u1edbi ph\u00e1t hi\u1ec7n ra l\u1ed7i nghi\u00eam tr\u1ecdng \u0111\u00f3? T\u1ea1i sao khi ph\u00e1t hi\u1ec7n ra l\u1ea1i l\u1eb3ng l\u1eb7ng v\u00e1 l\u1ed7i, kh\u00f4ng th\u00f4ng b\u00e1o cho c\u1ed9ng \u0111\u1ed3ng? Ai l\u00e0 ng\u01b0\u1eddi \u0111\u00e3 quy\u1ebft \u0111\u1ecbnh \u0111\u01a1n ph\u01b0\u01a1ng \u0111i v\u00e1 c\u00e1i l\u1ed7i theo phong c\u00e1ch \u0111\u00f3? M\u1ed9t h\u1ec7 th\u1ed1ng blockchain to\u00e0n c\u1ea7u m\u00e0 m\u1ed9t nh\u00f3m nh\u1ecf c\u00f3 th\u1ec3 l\u1eb3ng l\u1eb7ng mu\u1ed1n thay \u0111\u1ed5i l\u00e0 thay \u0111\u1ed5i v\u1eady sao? C\u00f3 ai c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o FBI (v\u00ed d\u1ee5) kh\u00f4ng c\u00e0i ng\u01b0\u1eddi v\u00e0o Ethereum \u0111\u1ec3 c\u1ed1 t\u00ednh \u0111\u1ea9y l\u1ed7i nghi\u00eam tr\u1ecdng h\u01a1n hay t\u1ea1o backdoor?<\/p>\n<\/div>\n

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Hi\u1ec7n s\u1ed1 l\u01b0\u1ee3ng ng\u01b0\u1eddi s\u1eed d\u1ee5ng Ethereum v\u1eabn ch\u1ec9 t\u00ednh h\u00e0ng tri\u1ec7u, nh\u01b0ng b\u1ea1n c\u1ee9 th\u1eed t\u01b0\u1edfng t\u01b0\u1ee3ng, n\u1ebfu th\u1ef1c s\u1ef1 c\u1ea3 th\u1ebf gi\u1edbi n\u00e0y d\u00f9ng Ethereum (\u201cm\u00e1y t\u00ednh th\u1ebf gi\u1edbi\u201d m\u00e0), th\u00ec c\u00f3 th\u1ec3 \u0111\u00e3 c\u00f3 bao nhi\u00eau ng\u01b0\u1eddi, doanh nghi\u1ec7p m\u1ea5t t\u00e0i s\u1ea3n, gi\u00e1n \u0111o\u1ea1n c\u00f4ng vi\u1ec7c, x\u1eed l\u00fd h\u1eadu qu\u1ea3 ch\u1ed3ng ch\u1ea5t nh\u01b0 th\u1ebf n\u00e0o. (Ngh\u1ecbch l\u00fd thay, sau khi l\u00fd do Ethereum b\u1ecb s\u1eadp h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1, gi\u00e1 c\u1ee7a Ether kh\u00f4ng nh\u1eefng kh\u00f4ng b\u1ecb \u1ea3nh h\u01b0\u1edfng m\u00e0 l\u1ea1i c\u00f2n t\u0103ng, ch\u1ee9ng t\u1ecf vi\u1ec7c th\u1ecb tr\u01b0\u1eddng b\u1ecb bi\u1ebfn ch\u1ea5t v\u00e0 \u0111\u00e1nh gi\u00e1 \u0111ang b\u1ecb m\u00e9o m\u00f3 nh\u01b0 th\u1ebf n\u00e0o).<\/p>\n<\/div>\n

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4) Berlin bug (2021)<\/strong><\/h2>\n

G\u1ea7n \u0111\u00e2y nh\u1ea5t, th\u00e1ng 4 n\u0103m 2021, n\u00e2ng c\u1ea5p \u201cBerlin\u201d c\u1ee7a Ethereum \u0111\u00e3 \u0111\u00e1nh s\u1eadp 12% h\u1ec7 th\u1ed1ng. L\u00fd do l\u1ea7n n\u00e0y l\u1ea1i li\u00ean quan \u0111\u1ebfn m\u1ed9t v\u00ed ph\u1ed5 bi\u1ebfn kh\u00e1c c\u1ee7a Ethereum, Open Ethereum. Open Ethereum t\u00ednh sai gi\u00e1 giao d\u1ecbch v\u00e0 \u0111\u00e3 coi m\u1ed9t s\u1ed1 block c\u1ee7a Ethereum l\u00e0 \u201csai lu\u1eadt\u201d (invalid). Blockchain c\u1ee7a c\u00e1c \u0111\u01a1n v\u1ecb s\u1eed d\u1ee5ng Open Ethereum (12% h\u1ec7 th\u1ed1ng) b\u1ecb \u201ct\u1eafc\u201d, ch\u00f4n ch\u00e2n t\u1ea1i ch\u1ed7. C\u0169ng gi\u1ed1ng nh\u01b0 Binance \u1edf s\u1ef1 c\u1ed1 tr\u01b0\u1edbc, Coinbase ph\u1ea3i t\u1ea1m th\u1eddi d\u1eebng giao d\u1ecbch Ether.<\/p>\n<\/div>\n

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Tr\u00ean \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 v\u00ed d\u1ee5 ti\u00eau bi\u1ec3u cho s\u1ef1 thi\u1ebfu an to\u00e0n c\u1ee7a Ethereum. C\u00f2n r\u1ea5t nhi\u1ec1u c\u00e1c l\u1ed7 h\u1ed5ng kh\u00e1c li\u00ean quan \u0111\u1ebfn ng\u00f4n ng\u1eef Solidity, vi\u1ebft ra qu\u00e1 d\u00e0i.<\/p>\n<\/div>\n

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Nh\u1eefng v\u1ee5 tai n\u1ea1n tr\u00ean c\u1ee7a Ethereum ch\u1eafc ch\u1eafn m\u1edbi ch\u1ec9 l\u00e0 b\u1ec1 n\u1ed5i c\u1ee7a t\u1ea3ng b\u0103ng l\u1edbn. C\u0169ng gi\u1ed1ng nh\u01b0 vi\u1ec7c Windows hay Macintosh qua h\u00e0ng ch\u1ee5c n\u0103m ph\u00e1t tri\u1ec3n v\u1eabn c\u00f3 nh\u1eefng l\u1ed7 h\u1ed5ng nguy hi\u1ec3m. Kh\u00e1c bi\u1ec7t \u1edf \u0111\u00e2y l\u00e0, l\u1ed7 h\u1ed5ng Windows\/Mac \u0111a s\u1ed1 th\u01b0\u1eddng ch\u1ec9 l\u00e0m ng\u01b0\u1eddi d\u00f9ng m\u1ea5t d\u1eef li\u1ec7u. C\u00f2n l\u1ed7 h\u1ed5ng blockchain \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn t\u00e0i s\u1ea3n c\u1ee7a r\u1ea5t nhi\u1ec1u ng\u01b0\u1eddi. C\u00f3 l\u1ebd kh\u00f4ng ai c\u00f3 th\u1ec3 ph\u1ee7 nh\u1eadn r\u1eb1ng: t\u00ednh an to\u00e0n khi tri\u1ec3n khai h\u1ec7 th\u1ed1ng blockchain l\u00e0 ph\u1ea3i lu\u00f4n \u0111\u01b0\u1ee3c \u0111\u1eb7t l\u00ean h\u00e0ng \u0111\u1ea7u (sau v\u1ea5n \u0111\u1ec1 th\u00e0nh c\u00f4ng v\u1ec1 m\u1eb7t TI\u1ec0N T\u1ec6 – m\u1ed9t ch\u1ee7 \u0111\u1ec1 hay g\u00e2y hi\u1ec3u l\u1ea7m kh\u00e1c).<\/p>\n<\/div>\n

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Ngo\u00e0i ra, m\u1ed9t s\u1ed1 l\u1ed7 h\u1ed5ng s\u1ebd ch\u1ec9 hi\u1ec7n h\u00ecnh trong t\u00ecnh hu\u1ed1ng hi\u1ebfm c\u00f3, nh\u1eefng s\u1ef1 ki\u1ec7n \u201cthi\u00ean nga \u0111en\u201d (black swan events). Trong th\u1ebf gi\u1edbi v\u1eadt ch\u1ea5t, c\u00e1c d\u1ef1 \u00e1n m\u00e1y bay Concorde, t\u00e0u bay Challenger, v\u00e0 nh\u00e0 m\u00e1y \u0111i\u1ec7n Fukushima trong th\u1eddi \u0111i\u1ec3m tr\u01b0\u1edbc khi x\u1ea3y ra tai n\u1ea1n th\u1ea3m kh\u1ed1c \u0111\u1ec1u \u0111\u1ea1t \u0111\u01b0\u1ee3c nh\u1eefng ti\u00eau chu\u1ea9n an to\u00e0n v\u00e0 th\u1eadm ch\u00ed \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 l\u00e0 b\u1eadc nh\u1ea5t trong s\u1ef1 an to\u00e0n, nh\u01b0ng khi s\u1ef1 c\u1ed1 kh\u00f4ng ng\u1edd x\u1ea3y ra, th\u00ec m\u1edbi bi\u1ebft m\u00e8o tr\u1eafng m\u00e8o \u0111en nh\u01b0 th\u1ebf n\u00e0o. Vi\u1ec7c tr\u00e0o l\u01b0u c\u00e1c blockchain chuy\u1ec3n sang s\u1eed d\u1ee5ng Proof-of-Stake c\u0169ng v\u1eady. M\u1ecdi chuy\u1ec7n s\u1ebd c\u00f3 v\u1ebb \u00eam \u0111\u1eb9p, cho \u0111\u1ebfn khi t\u1ea5t c\u1ea3 \u0111\u1ec1u s\u1eadp xu\u1ed1ng. C\u00e1i \u0111\u00e1ng n\u00f3i \u1edf \u0111\u00e2y l\u00e0, th\u00e1i \u0111\u1ed9 ch\u1ee7 quan trong x\u00e2y d\u1ef1ng v\u00e0 thi\u1ebft k\u1ebf s\u1ebd g\u00e2y ra nh\u1eefng tai n\u1ea1n kh\u00f4n l\u01b0\u1eddng.<\/p>\n<\/div>\n

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\u0110\u1eb1ng sau nh\u1eefng l\u1ed7 h\u1ed5ng c\u1ee7a Ethereum l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 mang t\u00ednh h\u1ec7 th\u1ed1ng, t\u01b0 t\u01b0\u1edfng (systemic): ng\u00f4n ng\u1eef l\u1eadp tr\u00ecnh blockchain qu\u00e1 nhi\u1ec1u t\u00ednh n\u0103ng r\u1ea5t kh\u00f3 \u0111\u1ea3m b\u1ea3o cho s\u1ef1 an to\u00e0n. \u0110i\u1ec1u n\u00e0y ai c\u00f3 kinh nghi\u1ec7m l\u00e0m b\u1ea3o m\u1eadt s\u1ebd hi\u1ec3u ngay. T\u1ea5t c\u1ea3 c\u00e1c ph\u1ea7m m\u1ec1m, ph\u1ea7n c\u1ee9ng v\u1ec1 b\u1ea3n ch\u1ea5t \u0111\u1ec1u c\u00f3 l\u1ed7 h\u1ed5ng (Bitcoin kh\u00f4ng ph\u1ea3i l\u00e0 ngo\u1ea1i l\u1ec7 v\u00e0 c\u0169ng \u0111\u00e3 t\u1eebng c\u00f3 bugs, nh\u01b0ng h\u1ea1n ch\u1ebf h\u01a1n Ethereum r\u1ea5t nhi\u1ec1u).<\/p>\n

H\u00e3y tham kh\u1ea3o s\u1ef1 ki\u1ec7n M\u1ef9 hack h\u1ec7 th\u1ed1ng h\u1ea1t nh\u00e2n v\u00e0 \u0111\u00e1nh s\u1eadp 1\/5 s\u1ed1 l\u01b0\u1ee3ng m\u00e1y ly t\u00e2m h\u1ea1t nh\u00e2n c\u1ee7a Iran (Stuxnet), m\u1ed9t h\u1ec7 th\u1ed1ng t\u01b0\u1edfng ch\u1eebng kh\u00f4ng c\u00f3 k\u1ebd h\u1edf, kh\u00f4ng c\u00f3 k\u1ebft n\u1ed1i v\u1edbi th\u1ebf gi\u1edbi b\u00ean ngo\u00e0i (air-gapped), “con ki\u1ebfn c\u0169ng kh\u00f4ng th\u1ec3 l\u1ecdt qua”, \u0111\u1ec3 hi\u1ec3u v\u1ea5n \u0111\u1ec1 b\u1ea3o m\u1eadt kh\u00f3 nh\u01b0 th\u1ebf n\u00e0o. C\u00e0ng nhi\u1ec1u t\u00ednh n\u0103ng, l\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt c\u00e0ng l\u1edbn (large attack surface). Vi\u1ec7c Ethereum ch\u00fa tr\u1ecdng c\u00e1c t\u00ednh n\u0103ng \u1edf base layer m\u00e0 xem nh\u1eb9 nh\u1eefng v\u1ea5n \u0111\u1ec1 b\u1ea3o m\u1eadt \u0111\u00e3 g\u00e2y ra nh\u1eefng h\u1eadu qu\u1ea3 nghi\u00eam tr\u1ecdng nh\u01b0 tr\u00ean. Ch\u1ec9 \u0111\u01a1n c\u1eed vi\u1ec7c s\u1ed1 l\u01b0\u1ee3ng d\u00f2ng code c\u1ee7a EVM v\u00e0 c\u00e1c v\u00ed Ethereum l\u00e0 qu\u00e1 nhi\u1ec1u, l\u00e0 \u0111\u00e3 kh\u00f3 ph\u00e1t hi\u1ec7n ra c\u00e1c l\u1ed7i nghi\u00eam tr\u1ecdng h\u01a1n nhi\u1ec1u r\u1ed3i (\u0111\u1ec3 \u00fd 3 v\u00ed d\u1ee5 s\u1ef1 c\u1ed1 \u1edf tr\u00ean li\u00ean quan \u0111\u1ebfn 3 v\u00ed ph\u1ed5 bi\u1ebfn kh\u00e1c nhau c\u1ee7a Ethereum).<\/p>\n<\/div>\n

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C\u00f3 m\u1ed9t s\u1ed1 ng\u01b0\u1eddi s\u1ebd n\u00f3i: \u1eeb, c\u0169ng \u0111\u00fang, \u0111i nhanh h\u01a1n, m\u1ea1o hi\u1ec3m h\u01a1n s\u1ebd r\u1ee7i ro h\u01a1n, thi\u1ebfu an to\u00e0n h\u01a1n, nh\u01b0ng b\u00f9 l\u1ea1i s\u1ebd l\u00e0m \u0111\u01b0\u1ee3c nh\u1eefng th\u1ee9 \u201chay ho\u201d h\u01a1n. Nh\u01b0ng ngo\u00e0i nh\u1eefng h\u1eadu qu\u1ea3 g\u00e2y thi\u1ebfu an to\u00e0n, vi\u1ec7c \u0111i nhanh \u0111i t\u1eaft c\u00f2n s\u1ebd d\u1ec5 d\u00e0ng l\u00e0m m\u1ea5t \u0111i th\u1ee9 \u00fd ngh\u0129a nh\u1ea5t c\u1ee7a c\u00f4ng ngh\u1ec7 blockchain: t\u00ednh ph\u00e2n t\u00e1n \/ trung l\u1eadp (decentralization \/ apoliticism).<\/p>\n

N\u1ebfu m\u1ed9t d\u1ef1 \u00e1n blockchain kh\u00f4ng duy tr\u00ec \u0111\u01b0\u1ee3c t\u00ednh trung l\u1eadp, th\u1ee9 nh\u1ea5t l\u00e0 kh\u00f4ng c\u00f3 \u0111\u1ed9t ph\u00e1 v\u1ec1 g\u00f3c \u0111\u1ed9 ti\u1ec1n t\u1ec7. Th\u1ee9 hai l\u00e0 blockchain, nghe c\u00f3 v\u1ebb cao si\u00eau, nh\u01b0ng th\u1ef1c ra l\u00e0 m\u1ed9t lo\u1ea1i c\u1ea5u tr\u00fac d\u1eef li\u1ec7u (data structure) t\u1ed3i t\u1ec7 nh\u1ea5t b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng khi vi\u1ebft ph\u1ea7n m\u1ec1m. 99% c\u00e1c d\u1ef1 \u00e1n blockchain n\u00ean s\u1eed d\u1ee5ng c\u00e1c c\u1ea5u tr\u00fac d\u1eef li\u1ec7u v\u00e0 database truy\u1ec1n th\u1ed1ng nh\u01b0 MySql, ch\u1ee9 kh\u00f4ng n\u00ean \u0111\u1ed9i m\u0169 blockchain, v\u00ec th\u1ef1c s\u1ef1 l\u00e0 n\u1ebfu kh\u00f4ng duy tr\u00ec \u0111\u01b0\u1ee3c t\u00ednh ph\u00e2n t\u00e1n, s\u1eed d\u1ee5ng c\u1ea5u tr\u00fac blockchain l\u00e0 m\u1ed9t \u0111i\u1ec1u c\u1ed3ng k\u1ec1nh, ph\u00ed ph\u1ea1m.<\/p>\n<\/div>\n

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S\u1ef0 THI\u1ebeU PH\u00c2N T\u00c1N\/TRUNG L\u1eacP: C\u0169ng l\u00e0 m\u1ed9t nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a h\u1ec7 th\u1ed1ng Ethereum?<\/strong><\/h2>\n

5) DAO Hack, t\u1eadp 2<\/strong><\/h2>\n<\/div>\n
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N\u00f3i v\u1ec1 t\u00ednh thi\u1ebfu trung l\u1eadp th\u00ec l\u1ea1i ph\u1ea3i nh\u1eafc l\u1ea1i v\u1ee5 DAO hack tr\u00ean, v\u00ec n\u00f3 qu\u00e1 kinh \u0111i\u1ec3n.<\/p>\n<\/div>\n

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So s\u00e1nh vi\u1ec7c Vitalik vi\u1ebft l\u1ea1i l\u1ecbch s\u1eed trong v\u1ee5 DAO hack v\u00e0 vi\u1ec7c Satoshi kh\u00f4ng \u201c\u0111\u00e0o tr\u01b0\u1edbc\u201d Bitcoin, kh\u00f4ng tham s\u00e2n si m\u01b0u l\u1ee3i c\u00e1 nh\u00e2n, hay vi\u1ec7c \u00f4ng ta t\u1ef1 \u0111\u1ed9ng r\u00fat lui, bi\u1ebfn m\u1ea5t \u0111\u1ec3 b\u1ea3o \u0111\u1ea3m t\u00ednh trung l\u1eadp cho Bitcoin, s\u1ebd th\u1ea5y s\u1ef1 kh\u00e1c nhau m\u1ed9t tr\u1eddi m\u1ed9t v\u1ef1c trong t\u01b0 t\u01b0\u1edfng. Trong genesis block c\u1ee7a Bitcoin, Satoshi \u0111\u00e3 \u00e1m ch\u1ec9 r\u00f5 s\u1ee9 m\u1ec7nh c\u1ee7a Bitcoin: “The Times 03\/Jan\/2009 Chancellor on brink of second bailout for banks\u201d. H\u1ec7 th\u1ed1ng ng\u00e2n h\u00e0ng trung \u01b0\u01a1ng, h\u1ec7 th\u1ed1ng ti\u1ec1n t\u1ec7 th\u1ebf gi\u1edbi qu\u00e1 th\u1ed1i n\u00e1t, Bitcoin sinh ra \u0111\u1ec3 ch\u1ed1ng l\u1ea1i v\u00e0 thay \u0111\u1ed5i nh\u1eefng \u0111i\u1ec1u b\u1ea5t c\u00f4ng v\u00f4 l\u00fd \u0111\u00f3.<\/p>\n

C\u00f2n s\u1ee9 m\u1ec7nh Ethereum l\u00e0 g\u00ec? m\u00e1y t\u00ednh chung c\u1ee7a th\u1ebf gi\u1edbi? kh\u00f4ng \u0111\u1ec1 c\u1eadp g\u00ec \u0111\u1ebfn v\u1ea5n \u0111\u1ec1 ti\u1ec1n t\u1ec7, l\u00e0 tr\u1ecdng y\u1ebfu c\u1ee7a cu\u1ed9c c\u00e1ch m\u1ea1ng blockchain. T\u1eeb c\u00e1i t\u01b0 t\u01b0\u1edfng sai l\u1ea7m ngay t\u1eeb l\u00fac h\u00ecnh th\u00e0nh, Ethereum \u0111\u00e3 li\u00ean t\u1ee5c m\u1eafc l\u1ed7i trong thi\u1ebft k\u1ebf v\u00e0 nh\u1eefng quy\u1ebft \u0111\u1ecbnh quan tr\u1ecdng. Gi\u1edd \u0111\u00e2y, ngay c\u1ea3 khi Vitalik n\u00f3i kh\u00f4ng c\u00f2n quy\u1ec1n l\u1ef1c thao t\u00fang Ethereum nh\u01b0 tr\u01b0\u1edbc n\u1eefa (\u0111\u00e3 \u0103n no ki\u1ebfm ti\u1ec1n \u0111\u1ee7 t\u1eeb nh\u1eefng phi v\u1ee5 tr\u01b0\u1edbc, ha!), th\u00ec s\u1ee9c \u1ea3nh h\u01b0\u1edfng c\u1ee7a Vitalik v\u00e0 Ethereum Foundation trong s\u1ef1 ch\u00e8o l\u00e1i Ethereum tr\u00ean th\u1ef1c t\u1ebf l\u00e0 kh\u00f4ng bao gi\u1edd m\u1ea5t (s\u1ebd n\u00f3i th\u00eam \u1edf d\u01b0\u1edbi).<\/p>\n<\/div>\n

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\u0110\u00e2y c\u0169ng l\u00e0 c\u00e2u h\u1ecfi l\u1edbn \u0111\u1eb7t ra cho nh\u1eefng d\u1ef1 \u00e1n blockchain kh\u00e1c: c\u00e1c founders c\u00f3 s\u1eb5n s\u00e0ng \u201clui v\u00e0o b\u00f3ng t\u1ed1i\u201d nh\u01b0 Satoshi, \u0111\u1ec3 v\u1eadn m\u1ec7nh c\u1ee7a \u0111\u1ee9a con tinh th\u1ea7n c\u1ee7a m\u00ecnh ho\u00e0n to\u00e0n tr\u00f4i l\u1ea1c theo c\u1ed9ng \u0111\u1ed3ng hay kh\u00f4ng? Hay l\u00e0 mang m\u00e1c ph\u00e2n t\u00e1n nh\u01b0ng th\u1ef1c ra v\u1eabn gi\u1eef nh\u1eefng ch\u00eca kho\u00e1 ch\u1ee7 ch\u1ed1t, \u0111\u1ec3 l\u00fac n\u00e0o mu\u1ed1n b\u1eadt\/t\u1eaft blockchain l\u00e0 b\u1eadt\/t\u1eaft nh\u01b0 c\u00e1i qu\u1ea1t tr\u1ea7n, mu\u1ed1n s\u1eeda blockchain theo \u00fd m\u00ecnh l\u00e0 s\u1eeda (c\u00f3 th\u1ec3 b\u1ecb t\u1ed5 ch\u1ee9c kh\u00e1c \u0111e do\u1ea1, thao t\u00fang), nh\u01b0 Vitalik \u0111\u00e3 t\u1eebng l\u00e0m \u0111\u1ec3 b\u1ea3o v\u1ec7 l\u1ee3i \u00edch nh\u00f3m? R\u1ea5t \u00edt d\u1ef1 \u00e1n blockchain n\u00e0o l\u00e0m \u0111\u01b0\u1ee3c \u0111i\u1ec1u n\u00e0y.<\/p>\n<\/div>\n

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6) Infura<\/strong><\/h2>\n

Vi\u1ec7c cho t\u1ea5t c\u1ea3 c\u00e1c d\u1eef li\u1ec7u h\u1ee3p \u0111\u1ed3ng l\u00ean blockchain khi\u1ebfn k\u00edch c\u1ee1 blockchain c\u1ee7a Ethereum t\u0103ng tr\u01b0\u1edfng v\u1edbi t\u1ed1c \u0111\u1ed9 ch\u00f3ng m\u1eb7t. Sinh sau Bitcoin 6 n\u0103m nh\u01b0ng gi\u1edd Ethereum blockchain \u0111\u00e3 c\u1ed3ng k\u1ec1nh h\u01a1n Bitcoin blockchain g\u1ea7n g\u1ea5p 3 l\u1ea7n. Ng\u00e0y nay, r\u1ea5t \u00edt c\u00e1 nh\u00e2n, t\u1ed5 ch\u1ee9c c\u00f3 th\u1ec3 t\u1ef1 ch\u1ea1y 1 Ethereum full node \u0111\u1ec3 ki\u1ec3m ch\u1ee9ng c\u00e1c giao d\u1ecbch tr\u00ean Ethereum, m\u00e0 ph\u1ea3i ph\u1ee5 thu\u1ed9c v\u00e0o server Infura c\u1ee7a \bCon\u001dsen\u001d\u001dSys. S\u1ed1 l\u01b0\u1ee3ng ng\u01b0\u1eddi c\u00f3 th\u1ec3 ki\u1ec3m ch\u1ee9ng \u0111\u01b0\u1ee3c d\u1eef li\u1ec7u blockchain ng\u00e0y c\u00e0ng nh\u1ecf \u0111i \u0111\u1ed3ng ngh\u0129a v\u1edbi vi\u1ec7c blockchain d\u1ec5 b\u1ecb thao t\u00fang, kh\u00f4ng c\u00f2n t\u00ednh trung l\u1eadp.<\/p>\n<\/div>\n

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Khi Infura s\u1eadp n\u0103m 2020 (\u0111\u1ecdc \u1edf tr\u00ean), c\u00e1c \u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t c\u1ee7a Ethereum, ho\u00e1 ra \u0111\u1ec1u d\u1ef1a v\u00e0o Infura, c\u0169ng \u0111\u00e3 ng\u1ecfm c\u1ee7 t\u1ecfi theo.<\/p>\n<\/div>\n

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7) Ice Age<\/strong><\/h2>\n

L\u1ecbch tr\u00ecnh ph\u00e1t tri\u1ec3n c\u1ee7a Ethereum ngay t\u1eeb nh\u1eefng ng\u00e0y \u0111\u1ea7u \u0111\u00e3 c\u00f3 m\u1ed9t kh\u00e1i ni\u1ec7m l\u00e0 \u201cIce Age\u201d (th\u1eddi k\u1ef3 \u0111\u00f3ng b\u0103ng). N\u00f4m na c\u00f3 ngh\u0129a l\u00e0, Ethereum cam k\u1ebft s\u1ebd chuy\u1ec3n sang h\u1ec7 th\u1ed1ng Proof-of-Stake tr\u01b0\u1edbc ng\u00e0y \u201cn\u1ed5 bom\u201d (Difficulty Bomb), m\u1ed9t ng\u00e0y trong t\u01b0\u01a1ng lai \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u1ecbnh s\u1eb5n. V\u1ec1 l\u00fd thuy\u1ebft, \u0111\u00e2y l\u00e0 vi\u1ec7c c\u00e1c l\u1eadp tr\u00ecnh vi\u00ean Ethereum t\u1ef1 t\u1ea1o ra \u00e1p l\u1ef1c \u0111\u1ec3 Ethereum c\u1ea3i ti\u1ebfn h\u1ec7 th\u1ed1ng nhanh ch\u00f3ng.<\/p>\n<\/div>\n

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Tr\u00ean th\u1ef1c t\u1ebf, Ice Age \u0111\u00e3 b\u1ecb gi\u00e1n \u0111o\u1ea1n 3 l\u1ea7n: Byzantium (2017), Constantinople (2019) v\u00e0 Muir Glacier (2020). V\u00e0 kh\u00e1i ni\u1ec7m \u201ct\u1ef1 s\u00e1t\u201d n\u00e0y ch\u1ec9 l\u00e0m t\u0103ng s\u1ef1 t\u1eadp trung quy\u1ec1n l\u1ef1c v\u00e0o \u0111\u1ed9i ng\u0169 l\u1eadp tr\u00ecnh vi\u00ean c\u1ee7a Ethereum: ch\u1ec9 c\u00f3 h\u1ecd l\u00e0 \u0111\u01b0\u1ee3c ch\u1ecdn ng\u00e0y \u201cn\u1ed5 bom\u201d ho\u1eb7c d\u1eddi ng\u00e0y \u201cn\u1ed5 bom\u201d.<\/p>\n<\/div>\n

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Quy\u1ec1n l\u1ef1c t\u1eadp trung v\u00e0o nh\u00f3m l\u1eadp tr\u00ecnh vi\u00ean nh\u1ecf c\u1ee7a Ethereum c\u0169ng l\u00e0 l\u00fd do nh\u1eefng s\u1ef1 c\u1ed1 nghi\u00eam tr\u1ecdng \u1edf ph\u00eda tr\u00ean x\u1ea3y ra, khi \u0111\u1ed9i ng\u0169 n\u00e0y \u0111\u01a1n ph\u01b0\u01a1ng \u0111\u01b0a ra nh\u1eefng quy\u1ebft \u0111\u1ecbnh m\u1ea1o hi\u1ec3m cho h\u1ec7 th\u1ed1ng m\u00e0 kh\u00f4ng c\u1ea7n tham kh\u1ea3o \u00fd ki\u1ebfn c\u1ee7a c\u1ed9ng \u0111\u1ed3ng. Quy\u1ec1n l\u1ef1c t\u1eadp trung n\u00e0y c\u0169ng l\u00e0 \u0111i\u1ec1u khi\u1ebfn Ethereum g\u1ea7n \u0111\u00e2y c\u00f3 th\u1ec3 b\u1ea5t th\u00ecnh l\u00ecnh thay \u0111\u1ed5i lu\u1eadt ch\u01a1i: EIP-1559 s\u1ebd cho ph\u00e9p \u201cti\u00eau hu\u1ef7\u201d ether, g\u00e2y ph\u1eabn n\u1ed9 trong c\u1ed9ng \u0111\u1ed3ng \u0111\u00e0o Ether. Nh\u1eefng g\u00ec Ethereum n\u00f3i v\u1ec1 s\u1ef1 ph\u00e2n t\u00e1n, t\u00f3m l\u1ea1i ch\u1ec9 l\u00e0 m\u1ed9t m\u00e0n di\u1ec5n m\u00e0 th\u00f4i.<\/p>\n<\/div>\n

\n

Tr\u00ean \u0111\u00e2y l\u00e0 m\u1ed9t v\u00e0i v\u00ed d\u1ee5 ti\u00eau bi\u1ec3u v\u1ec1 \u01b0u nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a h\u1ec7 th\u1ed1ng Ethereum, c\u00f2n nhi\u1ec1u v\u1ea5n \u0111\u1ec1 kh\u00e1c nh\u01b0 ph\u00ed giao d\u1ecbch t\u0103ng cao (Tether \u0111\u00e3 ph\u1ea3i b\u1ecf Ethereum v\u00ec chi ph\u00ed Ethereum gi\u1edd c\u00f2n cao h\u01a1n c\u1ea3 Bitcoin), t\u1eafc ngh\u1ebdn giao d\u1ecbch, hay c\u00e1c v\u1ea5n \u0111\u1ec1 khi thay th\u1ebf Proof-of-Work b\u1eb1ng Proof-of-Stake. M\u00ecnh kh\u00f4ng ti\u1ec7n n\u00f3i \u1edf b\u00e0i n\u00e0y.<\/p>\n<\/div>\n

\n
Th\u00e2n \u00e1i.<\/div>\n
Hugo<\/div>\n
https:\/\/www.facebook.com\/groups\/phocapblockchain\/permalink\/234088058171485<\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

L\u1eddi t\u1ef1a c\u1ee7a BVNews: B\u00e0i vi\u1ebft g\u1ed1c c\u1ee7a t\u00e1c gi\u1ea3 Hugo Nguyen \u0111\u01b0\u1ee3c \u0111\u0103ng tr\u00ean Group Facebook Ph\u1ed5 c\u1eadp blockchain. BVNews \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1ef1 cho ph\u00e9p c\u1ee7a t\u00e1c gi\u1ea3 \u0111\u1ec3 \u0111\u0103ng t\u1ea3i l\u1ea1i, mang b\u00e0i vi\u1ebft n\u00e0y \u0111\u1ebfn \u0111\u00f4ng \u0111\u1ea3o \u0111\u1ed9c gi\u1ea3 h\u01a1n.<\/p>\n","protected":false},"author":11,"featured_media":6176,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1840],"tags":[],"class_list":["post-6174","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-experts"],"yoast_head":"\n\u01afu v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a h\u1ec7 th\u1ed1ng Ethereum - BitcoinVN News<\/title>\n<meta name=\"description\" content=\"Nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a Ethereum l\u00e0 g\u00ec? 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