By Bitcoinist - 1 yil oldin - O'qish vaqti: 3 daqiqa
Mana Bitcoin Va Ethereumning kamchiliklari, bu Pentagon tergoviga ko'ra
Trail of Bits xavfsizlik firmasi e'lon qildi xabar on potential vulnerabilities that can allegedly affect the Bitcoin (BTC) and Ethereum (ETH) blockchain. Called “Are Blockchains Decentralized?”, the report was funded by the U.S. Department of Defense via its Defense Advanced Research Projects Agency (DARPA).
Tegishli o'qish | Xedj fondlari tomonidan USDTni qisqartirish haqidagi hisobotlarga Tether CTOning javobi
The report is focused on Bitcoin and Ethereum but approaches other blockchain-based platforms using Proof-of-Work (PoW) and Proof-of-Stake (PoS) and Byzantine Fault Tolerant consensus protocols in general.
Tekshiruv ushbu tarmoqlarning kriptografik komponentlari "mustahkam" degan xulosaga keldi va blokcheynni amalga oshirish va konsensus protokollarida zaifliklar mavjudligini da'vo qilmoqda. Boshqacha qilib aytganda, xavfsizlik firmasi blokcheyndan foydalanish mumkin, ammo ularni qo'llab-quvvatlaydigan kriptografiya kuchli ekanligiga ishonadi.
Trail of Bits arrived at the following conclusions during their investigation: Bitcoin, Ethereum, and other blockchains have a “privileged set of entities” with the power to change their transactions, unencrypted traffic, nodes running old “vulnerable” software, and others.
Umuman olganda, hisobotda ta'kidlanishicha, blokcheyn tarmoqlari markazlashtirilmagan va ular bir qator potentsial hujum vektorlari va tashqi aktyorlarning uzilishiga qarshi himoyasiz. Xususan, ular joriy blokcheyn tarmoqlarida "Sybil narxi" yo'qligini ta'kidladilar, ya'ni ularga "osonlik bilan" hujum qilish mumkin:
For a blockchain to be optimally distributed, there must be a so-called Sybil cost. There is currently no known way to implement Sybil costs in a permissionless blockchain like Bitcoin or Ethereum without employing a centralized trusted third party (TTP)Until a mechanism for enforcing Sybil costs without a TTP is discovered, it will be almost impossible for permissionless blockchains to achieve satisfactory decentralization.
Aytishga hojat yo'q, kripto hamjamiyat bu topilmalar xulosalarini rad etdi. BTC va ETH bozor qiymati bo'yicha ikkita yirik kriptovalyuta markazlashtirilmagan, ishonchsiz, shaffof va ochiq tizimlarni yaratish g'oyasiga asoslangan. Hisobot muammolari asosan bu borada muvaffaqiyatsizlikka uchraganini da'vo qiladi.
bo'ladi Bitcoin And Ethereum Truly Decentralized?
Hisobot o'zining topilmalari, xulosalarining to'g'riligi va AQSh Pentagonidan mablag' olgani sababli juda ziddiyatli bo'lib, bu mamlakat hukumati rasmiylari kripto sanoati va kriptovalyutalarga nisbatan dushmanona bayonotlar berishdi.
The CTO and Co-founder at Swan Bitcoin Yan Pritzker and its Editor-in-Chief Tomer Strolight tekshirilgan the investigation and arrived at discrepancies. Their arguments were in support of Bitcoin that “most blockchains are centralized to varying degrees (…)”.
The report from Pritzker and Strolight studies Trail of Bits claims one by one. First, they said Bitcoin lacks a “privileged set of entities” capable of changing its code, as it’s the user running the nodes that decide which software code they run. They add:
Even if we focus on the most popular Bitcoin mijoz, bitcoin-core, the claim that four people control the source code is also FALSE (…). Many other blockchains employ a forced-upgrade mechanism such as Ethereum’s difficulty bombs. In those cases, we find the claim to be largely TRUE (…).
Bundan tashqari, Pritzker va Strolayt kon hovuzlari va konchilar o'rtasidagi farqni ta'kidlab, DARPA tomonidan moliyalashtirilgan hisobotda aytilishicha, birinchisi tarmoqni buzmasligini ta'kidladi. BTC-ning Sybil hujumi narxi to'g'risida hisobotda kriptovalyuta o'z tarmog'iga hujum vektorining oldini olish maqsadida qanday yaratilganiga e'tibor qaratiladi:
The invention of Nakamoto Consensus (i.e. Bitcoin’s reliance on proof of work for source of truth) was literally designed to prevent Sybil attacks. Satoshi wanted any participant to be able to add a block, but choosing one user at random would be open to individuals pretending to be many users. But work cannot be faked (…).
Tegishli o'qish | Ethereum energiya iste'moli kon rentabelligi pasayganligi sababli keskin pasayishni ko'rmoqda
Yozish vaqtida BTC narxi so'nggi 3 soat ichida 24% ni qayd etdi va 20,000 XNUMX dollardan sotiladi.
BTC narxi 4 soatlik grafikda pasayish tendentsiyasiga ega. Manba: BTCUSD TradingviewAsl manba: Bitcoinist