Bitcoin không chỉ tạo ra xu hướng, mở ra một làn sóng mà nó còn trở thành tiêu chuẩn thực tế cho tiền ảo, truyền cảm hứng cho sự ra đời và phát triển của các đồng tiền ảo khác trên thế giới. Bài viết hôm nay chúng ta sẽ tìm hiểu về các đồng tiền ảo phổ biến trên thế giới ngoài đồng Bitcoin (BTC).submitted by san_giao_dich_tienao to u/san_giao_dich_tienao [link] [comments]
Tiền ảo là gì?
Trước khi chúng ta xem xét kỹ hơn một số lựa chọn thay thế cho Bitcoin, hãy tìm hiểu ngắn gọn ý nghĩa của các thuật ngữ như tiền ảo và Altcoin. Tiền ảo có dạng mã hóa hoặc “coin”. Trong khi một số loại tiền ảo đã xâm nhập vào thế giới vật chất ví dụ như tiền trên thẻ tín dụng hoặc các dự án khác thì phần lớn những đồng tiền ảo còn lại như Bitcoin vẫn hoàn toàn vô hình. Tiền ảo đề cập đến các mã rất phức tạp cho phép tạo và xử lý các loại tiền này và các giao dịch của chúng trên các hệ thống phi tập trung.
Tiền ảo hầu như luôn được thiết kế để không bị chính phủ thao túng và không chịu sự quản lý của bất kỳ ngân hàng, chính sách tiền và tài khóa nào. Các loại tiền tệ được mô phỏng theo Bitcoin được gọi chung là Altcoin và thường cố gắng để thể hiện mình là phiên bản sửa đổi hoặc cải tiến của Bitcoin. Mặc dù một số loại tiền này dễ khai thác hơn Bitcoin, nhưng vẫn có những đánh đổi, rủi ro lớn hơn do mức độ thanh khoản, chấp nhận và duy trì giá trị thấp hơn. Để tìm hiểu sâu hơn về tiền ảo là gì thì bạn đọc có thể nhấp vào đây.
Các đồng tiền ảo trên thế giới ngoài Bitcoin
Các đồng tiền ảo phổ biến trên thế giớiDưới đây, chúng tôi sẽ thông tin về các đồng tiền ảo quan trọng, phổ biến trên thế giới ngoài Bitcoin. Tuy nhiên, đầu tiên cần lưu ý là không thể có một danh sách toàn diện về tất cả các đồng tiền ảo ngoài Bitcoin được liệt kê dưới đây. Một lý do đơn giản giải thích cho điều này là vì thực tế có hơn 7.000 đồng tiền điện tử đang tồn tại tính đến tháng 11 năm 2020 và nhiều trong số những đó được cộng đồng những người đầu tư ưa chuộng.
Ethereum (ETH) – một trong các đồng tiền ảo theo sau Bitcoin thành công nhấtGiải pháp thay thế Bitcoin đầu tiên trong danh sách là Ethereum – một nền tảng phần mềm phi tập trung cho phép lưu trữ các hợp đồng thông minh và ứng dụng phi tập trung được xây dựng và chạy mà không có bất kỳ thời gian chết, gian lận, kiểm soát hoặc can thiệp nào từ bên thứ ba. Các ứng dụng trên Ethereum được chạy trên mã hóa dành riêng cho nền tảng của nó là Ether.
Ether giống như một phương tiện di chuyển trên nền tảng Ethereum và được hầu hết các nhà nghiên cứu tìm kiếm để phát triển và chạy các ứng dụng bên trong Ethereum, hoặc bây giờ là bởi các nhà đầu tư đang tìm cách mua các loại tiền kỹ thuật số khác bằng cách sử dụng Ether. Ether, ra mắt vào năm 2015, hiện là đồng tiền kỹ thuật số lớn thứ hai theo vốn hóa thị trường sau Bitcoin, mặc dù nó đứng sau tiền điện tử thống trị với một tỷ suất lợi nhuận đáng kể. Kể từ tháng 1 năm 2020, vốn hóa thị trường của Ether chỉ bằng 1/10 so với Bitcoin.
Trong năm 2014, Ethereum đã tung ra một đợt bán trước cho Ether và nhận được phản hồi tích cực; điều này đã giúp mở ra kỷ nguyên phát hành đồng tiền ban đầu (ICO). Theo Ethereum, nó có thể được sử dụng để “mã hóa, phân quyền, bảo mật và giao dịch bất cứ thứ gì.” Sau cuộc tấn công vào DAO vào năm 2016, Ethereum được chia thành Ethereum (ETH) và Ethereum Classic (ETC). Tính đến ngày 2 tháng 11 năm 2020, Ethereum (ETH) có vốn hóa thị trường là $45,442 tỷ đô la và giá trị mỗi đồng được thông báo là $401.25 đô la.
Ripple (XRP)Ripple là một mạng lưới thanh toán toàn cầu theo thời gian thực cung cấp các khoản thanh toán quốc tế tức thì và chi phí thấp. Trình làng vào năm 2012, Ripple cho phép các ngân hàng giải quyết các khoản thanh toán xuyên biên giới trong thời gian thực với ưu điểm là sự minh bạch từ đầu đến cuối và chi phí thấp hơn. Sự đồng thuận của Ripple (phương pháp cấu thành) độc đáo ở chỗ nó không không yêu cầu khai thác.
Thật vậy, tất cả các mã thông báo XRP của Ripple đã được khai thác trước khi ra mắt, có nghĩa là không có sự tạo ra của XRP theo thời gian, chỉ có việc giới thiệu và loại bỏ XRP khỏi nguồn cung thị trường theo hướng dẫn của mạng. Bằng cách này, Ripple tạo ra sự khác biệt so với Bitcoin và nhiều loại Altcoin khác. Vì cấu trúc của Ripple không yêu cầu khai thác, nó làm giảm việc sử dụng sức mạnh tính toán và giảm thiểu độ trễ mạng.
Cho đến nay, Ripple đã rất thành công với mô hình kinh doanh này. Nó vẫn là một trong những loại tiền kỹ thuật số hấp dẫn nhất trong số các tổ chức tài chính truyền thống đang tìm cách đổi mới thanh toán xuyên biên giới. Hiện nó cũng là tiền điện tử lớn thứ ba trên thế giới xét theo vốn hóa thị trường tổng thể. Tính đến ngày 2 tháng 11 năm 2020, Ripple có vốn hóa thị trường là $11,001 tỷ đô la và giá trị mỗi đồng được thông báo là $0.24 đô la.
Litecoin (LTC) – Top 10 các đồng tiền ảo có vốn hóa thị trường cao nhất
Đồng tiền ảo Litcoin (LTC)
Litecoin được ra mắt vào năm 2011, là một trong những đồng tiền điện tử đầu tiên đi theo chân của Bitcoin và thường được gọi ví von là “silver to bitcoin’s gold”. Nó được tạo ra bởi một cựu kỹ sử của Google, Charlie Lee, một sinh viên tốt nghiệp MIT. Litecoin hoạt động dựa trên mạng thanh toán toàn cầu có mã nguồn mở mà không bị kiểm soát bởi bất kỳ cơ quan trung ương nào và sử dụng thuật toán”scrypt” làm bằng chứng công việc, có thể được giải mã với sự trợ giúp của CPU cung cấp cho người tiêu dùng.
Mặc dù Litecoin có nhiều mặt giống Bitcoin nhưng nó có tốc độ tạo khối nhanh hơn vì vậy cung cấp thời gian xác nhận giao dịch cũng nhanh hơn. Ngoài các nhà phát triển, ngày càng có nhiều người bán chấp nhận Litecoin. Đến ngày 2 tháng 11 năm 2020, vốn hóa thị trường của Litecoin là $3,694 tỷ đô la và giá trị mỗi đồng thông báo là $56.16 đô la, khiến nó trở thành đồng tiền ảo lớn thứ sáu trên thế giới.
Tether (USDT)Tether là một trong những đồng tiền đầu tiên và phổ biến nhất của một nhóm được gọi là Stablecoin, tiền điện tử nhằm cố định giá trị thị trường của chúng với một loại tiền tệ hoặc điểm tham chiếu bên ngoài khác để giảm sự biến động. Bởi vì hầu hết các loại tiền kỹ thuật số ngay cả những loại tiền lớn như Bitcoin, đã trải qua những giai đoạn biến động mạnh thường xuyên. Tether và các loại tiền ổn định khác cố gắng làm dịu biến động giá để thu hút những người dùng có thể thận trọng.
Tether được ra mắt vào năm 2014 tự mô tả mình là “một nền tảng hỗ trợ blockchain được thiết kế để tạo điều kiện thuận lợi cho việc sử dụng các loại tiền tệ định danh theo cách thức kỹ thuật số để giảm thiểu sự biến động và phức tạp thường liên quan đến tiền tệ kỹ thuật số. Vào ngày 2 tháng 11 năm 2020, Tether là tiền điện tử lớn thứ ba theo vốn hóa thị trường, với tổng vốn hóa thị trường là $16,680 tỷ đô la và giá trị mỗi đồng là $1,00 đô la.
Bitcoin Cash (BCH) – đứng thứ 5 về vốn hóa thị trường trong các đồng tiền ảoBitcoin Cash (BCH) giữ một vị trí quan trọng trong lịch sử của Altcoin vì nó là một trong những đồng có hard fork sớm nhất và thành công nhất từ Bitcoin gốc. Trong thế giới tiền ảo, fork diễn ra là kết quả của các cuộc tranh luận giữa các nhà phát triển và thợ đào coin. Do tính chất phi tập trung của tiền tệ kỹ thuật số, các thay đổi bán buôn đối với mã cơ bản của mã thông báo hoặc đồng xu trong tầm tay phải được thực hiện do sự đồng thuận chung. Quá trình này có cơ chế thay đổi tùy theo loại tiền điện tử cụ thể.
Khi các phe phái khác nhau không thể đi đến thỏa thuận, đôi khi tiền kỹ thuật số bị chia tách, với bản gốc vẫn đúng với mã gốc của nó và bản sao khác bắt đầu hoạt động như một phiên bản mới của đồng tiền trước đó, hoàn chỉnh với các thay đổi đối với mã của nó. BCH bắt đầu hoạt động vào tháng 8 năm 2017 do một trong những đợt chia tách này. Cuộc tranh luận đã dẫn đến việc tạo ra BCH có liên quan đến vấn đề khả năng mở rộng đó là mạng Bitcoin có giới hạn nghiêm ngặt về kích thước khối một megabyte (MB). BCH tăng kích thước khối từ một MB lên 8MB, với ý tưởng là các khối lớn hơn sẽ cho phép thời gian giao dịch nhanh hơn. Nó cũng thực hiện các thay đổi khác, bao gồm việc loại bỏ giao thức Segregated Witness ảnh hưởng đến không gian khối. Kể từ ngày 2 tháng 11 năm 2020, BCH có vốn hóa thị trường là $4,983 tỷ đô la và giá trị mỗi đồng là $268.51 đô la.
Monero (XMR)Monero là một loại tiền tệ an toàn, riêng tư và không thể bị theo dõi. Đồng tiền ảo mã nguồn mở này đã được ra mắt vào tháng 4 năm 2014 và nhanh chóng thu hút sự quan tâm đông đảo của cộng đồng những người đam mê đồng tiền mã hóa. Sự phát triển của loại tiền điện tử này hoàn toàn dựa trên sự đóng góp và hướng tới cộng đồng. Monero đã được ra mắt với trọng tâm mạnh mẽ là phân cấp và khả năng mở rộng, đồng thời nó cho phép hoàn toàn quyền riêng tư bằng cách sử dụng một kỹ thuật đặc biệt gọi là “ring signatures”.
Với kỹ thuật này, sẽ có một nhóm các chữ ký mật mã bao gồm ít nhất một người tham gia thực sự và tất cả chúng đều có vẻ hợp lệ vì chữ ký thực không thể bị cô lập. Với cơ chế bảo mật đặc biệt như vậy, Monero đã phát triển một thứ có tiếng tăm không kém, nó có liên quan đến các hoạt động tội phạm trên khắp thế giới. Tuy nhiên, cho dù nó được sử dụng cho mục đích tốt hay xấu, không thể phủ nhận rằng Monero đã giới thiệu những tiến bộ công nghệ quan trọng cho tiền điện tử. Tính đến ngày 2 tháng 11 năm 2020 Monero có vốn hóa thị trường là $2,246 tỷ đô la và giá trị mỗi mã thông báo là $126.57 đô la.
Đồng tiền ảo EOS
Ngoài Libra, một trong những đồng tiền kỹ thuật số mới nhất lọt vào danh sách này là EOS. Được công bố vào tháng 6 năm 2018, EOS được tạo ra bởi Dan Larimer – nhà tiên phong tiền điện tử. Trước khi làm việc cho EOS, Larimer đã là nhà sáng lập sàn tiền ảo Bitshares cũng như nền tảng truyền thông xã hội dựa trên blockchain Steemit. Giống như lịch sử của các loại tiền điện tử khác trong danh sách này, EOS được thiết kế sau Ethereum, vì vậy nó cung cấp một nền tảng mà các nhà phát triển có thể xây dựng các ứng dụng phi tập trung. Tuy nhiên, EOS có nhiều điều đáng chú ý vì nhiều lý do.
Đầu tiên, đợt chào bán đồng tiền ban đầu của nó là một trong những đợt phát hành lâu nhất và có lợi nhuận cao nhất trong lịch sử, thu về mức kỷ lục 4 tỷ đô la Mỹ trong quỹ nhà đầu tư thông qua các nỗ lực tìm nguồn cung ứng cộng đồng kéo dài một năm. EOS cung cấp một cơ chế bằng chứng cổ phần được ủy quyền mà nó hy vọng có thể cung cấp khả năng mở rộng vượt xa các đối thủ cạnh tranh.
EOS bao gồm EOS.IO, tương tự như hệ điều hành của máy tính và hoạt động như mạng blockchain cho tiền kỹ thuật số, cũng như tiền EOS. EOS cũng mang tính cách mạng vì không có cơ chế khai thác để sản xuất đồng tiền. Thay vào đó, các nhà sản xuất khối tạo ra các khối và được thưởng bằng mã thông báo EOS dựa trên tỷ lệ sản xuất của họ. EOS bao gồm một hệ thống các quy tắc phức tạp để điều chỉnh quá trình này. Với ý tưởng sẽ dân chủ và phi tập trung hơn so với các loại tiền điện tử khác trên thế giới. Kể từ ngày 2 tháng 11 năm 2020, EOS có vốn hóa thị trường là $2,361 tỷ đô la và giá trị mỗi mã thông báo là $2.52 đô la.
Bitcoin SV (BSV)Bitcoin SV (BSV), với “SV” trong trường hợp này là viết tắt của “Satoshi Vision”, là một hard fork của Bitcoin Cash. Theo nghĩa này, BSV là một nhánh rẽ của mạng Bitcoin ban đầu. Việc nâng cấp mạng theo kế hoạch cho tháng 11 năm 2018 đã dẫn đến một cuộc tranh luận kéo dài giữa các phe phái khai thác và phát triển trong cộng đồng BCH, dẫn đến hard fork và sự ra đời của BSV. Các nhà phát triển Bitcoin SV đề nghị rằng tiền điện tử này nên khôi phục giao thức ban đầu của nhà phát triển Bitcoin- Satoshi Nakamoto và đồng thời cho phép các phát triển mới để tăng tính ổn định, cho phép khả năng mở rộng. Các nhà phát triển Bitcoin SV cũng ưu tiên bảo mật và thời gian xử lý giao dịch nhanh chóng. 2 tháng 11 năm 2020, BSV có vốn hóa thị trường là $3,074 tỷ đô la và giá trị mỗi mã thông báo là $165.64 đô la.
Binance Coin (BNB)Binance Coin (BNB) là đồng tiền ảo chính thức của nền tảng trao đổi tiền điện tử Binance. Thành lập vào năm 2017, Binance đã nhanh chóng vươn lên trở thành sàn giao dịch lớn nhất trên toàn cầu về khối lượng giao dịch tổng thể. Bên cạnh đó Binance Coin cho phép người dùng Binance giao dịch hàng chục loại tiền điện tử khác nhau một cách hiệu quả trên nền tảng Binance. Ngoài ra, BNB được sử dụng để hỗ trợ phí giao dịch trên sàn giao dịch và cũng có thể được sử dụng để thanh toán cho một số hàng hóa và dịch vụ, bao gồm phí đi lại và các dịch vụ khác. Kể từ ngày 2 tháng 11 năm 2020, BNB có vốn hóa thị trường là $4,145 tỷ đô la và giá trị mỗi mã thông báo là $28.71 đô la.
Lời kếtNhững thông tin về các đồng tiền ảo phổ biến trên thế giới ngoài Bitcoin trên đây sẽ giúp người đọc có thêm được kiến thức về các Altcoin. Với kiến thức này bạn đọc sẽ có động lực để tìm hiểu về nghiên cứu sâu hơn về một đồng tiền ảo mà cảm thấy phù hợp và hứng thú với bản thân. Tìm hiểu thêm các thông tin mới nhất và chất lượng nhất về thị trường tiền ảo nhé.Xem thêm: Đầu tư tiền ảo là gì? Các bước đầu tư tiền ảo cho người mới
https://preview.redd.it/urpoegyjy2p51.png?width=1153&format=png&auto=webp&s=fa9af77daf73293714d33e7266aedda0a109e2b2submitted by bbvedf to u/bbvedf [link] [comments]
Bitcoin SV (Satoshi Vision). Un fork de un fork del Bitcoin Core (BTC) a partir de las discrepancias en escalabilidad y tamaño de bloque.
Veamos qué dice Coinpaprika:
Bitcoin SV – is a new coin splitted of Bitcoin Cash blockchain on 15 November 2018. Four fundamental pillars form the basis of Bitcoin SV’s roadmap to create the one blockchain for the world: stability, scalability, security, and safe instant transactions (a.k.a 0-confirmation). The Bitcoin SV project was created at the request of and sponsored by Antiguan-based CoinGeek Mining, with development work initiated by nChain. The project is also owned by the Antiguan-based bComm Association on behalf of the global BCH (SV) community, and the Bitcoin SV code is made available under the open source MIT license.Qué tiene de bueno BSV? Estabilidad, escalabilidad, seguridad y transacciones seguras e instantáneas. Yo no tengo queja con ninguna de ellas. Las transferencias son muy rápidas (segundos) y con una fee razonable. Incluso asumidas en muchos casos por el proveedor.
La escalabilidad (banca) y el tamaño de bloque (multimedia) serán fundamentales a futuro.
“The existing Visa credit card network processes about 15 million internet purchases per day worldwide. Bitcoin can already scale much larger than that with existing hardware for a fraction of the cost. It never really hits a scale ceiling.” – Satoshi Nakamoto (April 2009)https://preview.redd.it/w6voga5ly2p51.jpg?width=2256&format=pjpg&auto=webp&s=c08304e64764e01515c379b8d9bcac35f3c7c3f4
BTC podrá seguir añadiendo capas paralelas, parches y demás que ya contempla BSV de base. No sé si es una solución que pueda alargarse en el tiempo, por lo que no parece que compitan en la misma liga. Queda por ver si complementarias o excluyentes …
Qué tiene de malo BSV? Es otro proyecto más? Si bien los números y la visión es ganadora, no siempre lo mejor es lo más extendido ni lo más adoptado. Lo peor que tiene BSV … es que no es BTC. Ni BCH. Hay multitud de haters atacando el proyecto y a su promotor principal Craig Wright. Autoproclamado como Satoshi Nakamoto, el promotor está envuelto en líos judiciales en el caso Kleiman (su socio fallecido) en el que los herederos de éste reclaman una fortuna (estimada en 1,1 millones de BTC) de cuando trabajaban conjuntamente. Más info:
https://es.cointelegraph.com/news/craig-wright-must-prove-access-to-11m-btc-fortune-by-april-17Noticias como ésa, unida a los haters de profesión (que lógicamente defienden “lo suyo”), ha convertido a BSV en una moneda controvertida que no deja indiferente a nadie. Para ver un ejemplo claro, Binance lo delistó arrastrado por la numerosa comunidad que atacaba a Craig Wright. Sin embargo, las pools de esa misma Binance están minando BSV mayoritariamente porque es una moneda rentable.
BSV no parece una moneda especulativa, ni intradía. Sigue las variaciones del mercado, con subidas y bajadas locas (como todas), pero apunta más a un largo plazo. Cinco, diez años.
Más info: https://bitcoinsv.com/
Written by Shuyao Kongsubmitted by CoinExcom to btc [link] [comments]
Published by decrypt.co
An interview with Haipo Yang, a crypto OG who’s trying to reposition his Bitcoin Cash-based CoinEx exchange. And more, in this week’s da bing.
Haipo Yang, founder of ViaBTC, one of the largest mining pools in the world, and CoinEx, a crypto exchange known for its focus on Bitcoin Cash-based trading, is a well-known but relatively quiet character in China’s crypto circle. Typically, Yang doesn’t talk that much about his journey launching the mining pool, nor about CoinEx, which launched in December 2017.
And he almost never speaks about his fervent support for BCH, a hard fork of Bitcoin, and his now even more enthusiastic belief in BSV.
Yet that’s changing of late. Yang has been more active in recent months, participating in interviews about CoinEx and tweeting more frequently on Weibo, China’s Twitter. He’s been making controversial statements predicting the death of BTC, while supporting BCH and BSV on social media.
Recently, Yang told me that as a developer rather than a business person, he’s never been comfortable speaking in public. However he’s making an effort now to help publicize his renovation of CoinEx. So, for this week’s da bing, I decided to chat with him and get a peek into the mind of a veteran crypto entrepreneur who’s trying to make a personal, as well as a platform, comeback.
CoinEx’s golden opportunityThe first hard fork of Bitcoin occurred in August, 2017 and created a new cryptocurrency called Bitcoin Cash. The fork was prompted by partisans, including Yang, who wanted bigger block sizes on the blockchain — the basic idea was that bigger blocks would enable more transactions per second and make Bitcoin Cash something people would actually use to buy things, rather than Bitcoin’s more commonly perceived use as a store of value.
Yang added a tremendous amount of value to the mining scene in China. As a technical founder with has years of experience in big tech firms such as Tencent, Yang is proud of his #buidl skills. He developed most of the code in the early days of VicBTC, which became one of the biggest mining pools to this day.
Not satisfied with owning just a mining pool,Yang conceived of CoinEx, which was born in December of that year, specifically to carry on the mission of the newly forked Bitcoin Cash blockchain. As he got swept up in Bitcoin Cash enthusiasm, he even said that “BCH is bitcoin.”
CoinEx’s strategy was BCH-focused from day one; BCH was its base currency, meaning you could use it to buy and sell other currencies, such as Ethereum and Litecoin.
Interestingly, Jihan Wu, the co-founder of Bitcoin Exchange — himself a famous BCH supporter — was a big investor in the exchange. That made me wonder why he, Yang, and many other OG crypto miners, were so passionate about BCH. Was it just about bigger block sizes?
“Bigger block size means more users and use cases,” Yang explained. The move to bigger block sizes was attractive to miners because they would facilitate more transactions. Miners make money on transaction fees, as well as mining blocks. Likewise, the network would arguably be more useful to people, who were looking for digital cash for every day use.
That especially resonated with many early hardcore Bitcoiners. Said Yang: “We really believe that Bitcoin should be a P2P cash vehicle rather than a store of value.”
This view probably sounds outdated to people who believe that Bitcoin’s value as cash is long gone, with solutions such as Lightning Network fulfilling that role. Instead, the new narrative for Bitcoin resides in its value, rather than utility. Yet Yang believed that the forked network would create far more opportunity
“We could invite influential companies to establish nodes and contribute to the network. This cannot be done with the original Bitcoin architecture,” he said.
CoinEx pivotsBut from its inception, CoinEx struggled with adoption and was dwarfed by the bigger exchanges. Part of that had to do with the fact that BCH and “Bitcoin Satoshi’s Vision,” another Bitcoin hard fork, were both controversial. Critics pointed out that these networks are centralized in a few big mining pools, and 51% attacks are not out of the question.
So over time, though Yang’s exchange still maintains strong support for BCH and BSV, it began to add support for all the major currencies.
Finally, in January of this year, it announced a major upgrade, of… well, just about everything. It started to offer futures trading, leveraged trading, options trading, and over 100 token projects available to traders. It even rolled out its own blockchain, “CoinEx Chain” to support a new DEX, “CoinEx DEX.”
The seemingly sudden publicity of CoinEx should not come as a surprise, then. As BCH/BSV was being marginalized, Yang shifted his focus. He’s now trying to ride the wave of building a bigger, more dynamic exchange.
“Crypto exchanges are where value is discovered,” Yang told me.
CoinEx: TNGBuilding an exchange isn’t done overnight, nor is re-building one. CoinEx is still competing with the giants such as Binance.
However Yang thinks his exchange will thrive by zigging when his competitors zag. As usual, CoinEx is taking a slightly different route, he told me.
Like what? “We will be listing 小币种,” he said, using the expression for “small token projects.” I cannot help but wonder if these “small token projects” are simply shitcoins, the trading of which is certainly not new.
Indeed, Yang said that he’s banking on the success of his new, public blockchain. “We are building a CoinEx Chain, a layer one protocol for DEX alone. Using our public blockchain, anyone can issue any token, at any time,” he said. He described the blockchain as “a real decentralized, token-issuance and transaction platform.”
This is the core of Yang’s plan and vision. He believes that centralized exchanges will be a bottleneck for crypto adoption because it contradicts crypto’s nature as a completely free and open infrastructure. Essentially anyone should be able to launch a token and trade it with anyone. Only by building DEXes can we achieve full decentralization, he says.
The Religious nature of Bitcoin, and forked BitcoinIt’s his belief that Bitcoin should adhere to Satoshi’s original vision that led Yang to send yet another controversial tweet last week, which I will translate: “The early days of Bitcoin expansion are similar to religion. The religious fervor brings prosperity to the industry.”
By extension, Yang believes that the next generation of Bitcoin should provoke a similar “religious” fervor. That’s why he has slowly become more of a BSV advocate than a fan of Bitcoin Cash. Yang believes that “BSV has more religious connotations, despite its negative image.” (As most crypto people know, the controversial Craig Wright, who claims to be Satoshi Nakamoto, led the hard fork which created BSV. Consequently it is often met with skepticism and derision.)
“The early days of Bitcoin expansion are similar to religion,” said Yang. “The religious fervor brings prosperity to the industry.”
Crypto is famous for its tribalism. Many people choose one camp over another not for practical reasons but because of simple faith. Talking to Yang and reading his tweet brings a historic texture to the Bitcoin narrative. But crypto cannot survive on religion alone. One has to build. Hash might have been worshipped in the old days but now the crypto religion is all about the size of the congregation.
Click here to register on CoinEx!
https://preview.redd.it/dju4oz1g16c51.jpg?width=2400&format=pjpg&auto=webp&s=fe57edcd81ffa31bff95fe3026055020f7720dcesubmitted by Blockchain_org to BlockchainStartups [link] [comments]
Cryptocurrencies have now become a buzz word. Despite the resilience that it faced initially, cryptocurrencies have come a long way. There are a total of around 5000 cryptocurrencies circulating in the market. If you plan to make a career in this domain, you need to run through the following questions.
1. What is a cryptocurrency?
Cryptocurrency is a digital currency that is transacted on a distributed ledger platform or decentralized platform or Blockchain. Any third party does not govern it, and the transaction takes place between peer-to-peer.
2. When was the first Cryptocurrency introduced?
The first Cryptocurrency or Bitcoin was introduced in the year 2009.
3. Who created Cryptocurrency?
Satoshi Nakamoto gave the first Cryptocurrency. The white paper for the same was given in 2008 and a computer program in 2009.
4. What are the top three cryptocurrencies?
The following are the three cryptocurrencies:
• Bitcoin (BTC) $128bn.
• Ethereum (ETH) $19.4bn.
• XRP (XRP) $8.22bn.
5. Where can you store Cryptocurrency?
Cryptocurrencies are stored in a digital wallet, and this is accessible via public and private keys. A public key is the address of your wallet, and the private key is the one that helps you in executing the transaction.
6. Which is the safest wallet for Cryptocurrency?
The most secured wallet for Cryptocurrency is a hardware wallet. It is not connected to the internet, and thus it is free from a hacking attack. It is also known as a cold wallet.
7. From where I can purchase cryptocurrencies?
The easiest way to buy Cryptocurrency is via crypto exchange. You can several crypto exchanges like Coinbase, Bitbuy, CHANGENow, Kraken etc.
8. What are the ten popular crypto exchanges?
The following are the best ten popular crypto exchange:
We all know that Bitcoin or any other cryptocurrency runs on the Blockchain platform, which gives it some additional features like decentralization, transparency, faster speed, immutability and anonymity.
10. What is AltCoin?
It means Alternative Coin. All the cryptocurrencies other than Bitcoin are alternative coins. Similar to Bitcoin, AltCoins are not regulated by any bank. The market governs them.
11. Are cryptocurrency sites regulated?
Most cryptocurrency websites are not regulated.
12. How are Cryptocurrency and Blockchain related?
Blockchain platform aids cryptocurrency transactions, which makes use of authentication and encryption techniques. Cryptography enables technology for Cryptocurrency, thus ensuring secure transactions.
13. What is a nonce?
The mining process works on the pattern of validating transactions by solving a mathematical puzzle called proof-of-work. The latter determine a number or nonce along with a cryptographic hash algorithm to produce a hash value lower than a predefined target. The nonce is a random value used to vary the value of hash so that the final hash value meets the hash conditions.
14. How is Cryptocurrency different from other forms of payment?
Cryptocurrency runs on Blockchain technology, which gives it an advantage of immutability, cryptography, and decentralization. All the payments are recorded on the DLT, which is accessible from any part of the world. Moreover, it keeps the identity of the user anonymous.
15. Which is the best Cryptocurrency?
Several cryptocurrencies have surged into the market, and you can choose any of these. The best way to choose the right cryptocurrencies is to look at its market value and assess its performance. Some of the prominent choices are Bitcoin, Ethereum, Litecoin, XRP etc.
16. What is the worst thing that can happen while using Cryptocurrency?
One of the worst things could be you losing your private keys. These are the passwords that secure your wallet, and once they are lost, you cannot recover them.
17. What is the private key and public key?
Keys secure your cryptocurrency wallet; these are public key and private key. The public key is known to all, like your bank account number, on the hand, the private key is the password which protects your wallet and is only known to you.
18. How much should one invest in Cryptocurrency?
Well, investing in Cryptocurrency is a matter of choice. You can study how the market is performing, and based on the best performing cryptocurrency, you can choose to invest. If you are new to this, then it’s advisable that you must start small.
19. From where can one buy Bitcoin using Fiat currency?
Two of the popular choices that you have are Coinbase and Binance, where you can purchase Cryptocurrency using fiat currency.
20. Are the coins safe on exchanges?
All the exchanges have a high level of security. Besides, these are regularly updated to meet the security requirements, but it’s not advisable to leave your coins on them since they are prone to attack. Instead, you can choose a hard wallet to store your cryptocurrencies, which are considered the safest.
21. What determines the price of cryptocurrencies?
The price of cryptocurrencies is determined by the demand and supply in the market. Besides, how the market is performing also determines the price of cryptocurrencies.
22. What are some of the prominent cryptocurrencies terminologies?
There are jargons which are continuously used by people using cryptocurrencies are:
DYOR: Do Your Own Research
Dapps: Decentralized Applications
Spike: Shapr increase in the price of the Cryptocurrency
Pump: Manipulated increase in the price of a cryptocurrency
Dump: Shapr decline in the price of Cryptocurrency
23. How can I check the value of cryptocurrencies?
Various platforms will give you an update on the price of cryptocurrencies. You can keep a tab on them and check the pricing of cryptocurrencies.
24. What are the advantages of using digital currencies?
There are various advantages like you are saved from double-spending, the transactions are aster and secure. Moreover, digital currencies now have global acceptance.
25. What is the difference between cryptocurrencies and fiat currencies?
Cryptocurrencies are digital currencies which run on the Blockchain platform and are not governed by any government agencies, while the fiat currencies are the ones which are governed by authorities and government.
Conclusion- This was all the FAQs pertaining to cryptocurrency, for more such information keep coming back to Blockchain Council.
This is the second post of our Spreading Crypto series where we take a deep dive into what it’ll take to help this technology reach broader adoption.submitted by mickhagen to genesisblockhq [link] [comments]
Mick exploring the state of apps in crypto
Our previous post explored the history of protocols and how they only become widely adopted when a compelling application makes them more accessible and easier to use.
Crypto will be no different. Blockchain technology today is mostly all low-level protocols. As with the numerous protocols that came before, these new, decentralized protocols need killer applications.
So, how’s that going? Where is crypto’s killer application? What’s the state of application development within our industry? Today we’ll try to answer those questions. We’ll also take a close look at decentralized applications — as that’s where a lot of the developer energy and focus currently is. Let’s dive in.
Popular Crypto ApplicationsThe most popular crypto applications today are exchanges like Coinbase and Binance — each with tens of millions of users. Other popular crypto exchanges include Kraken, Bitstamp, Gemini, and Bitfinex. In recent years, new derivatives platforms have emerged like FTX and Deribit.
Beyond the fact that the most popular crypto applications are all used for speculation, another common thread is that they are all centralized.A centralized application means that ultimate power and control rests with a centralized party (the company who built it). For example, if Coinbase or Binance wants to block you from withdrawing your funds for whatever reason (maybe for suspicious activity or fraud), they can do that. They have control of their servers so they have control of your funds.
Most popular applications that we all use daily are centralized (Netflix, Facebook, Youtube, etc). That’s the standard for modern, world-class applications today.
Decentralized ApplicationsEven though the most popular crypto applications are all centralized, most of the developer energy and focus in our industry is with decentralized applications (dApps) and non-custodial products.
These are products where only the user can touch or move funds. Not even the company or developer who built the application can access or control or stop funds from being moved. Only the user has control.
These applications allow users to truly become their own bank and have absolute control of their money.They also allow users to perform blockchain transactions and interact directly with decentralized protocols. Some of the most popular non-custodial products include Ledger, MetaMask, and MyCrypto (#ProudInvestor).
While the benefits of this type of application are obvious (user has full control of their funds), it comes with a lot of tradeoffs. We will cover that later in this post.
Libertarianism + CryptoIf the most popular applications tend to be centralized (inside and out of crypto), why is so much of our community focused on building decentralized applications (dApps)? For the casual observer, that’s a reasonable, valid question.
“Not your keys, not your coins.”This meme is endlessly repeated among longtime crypto hodlers. If you’re not in complete control of your crypto (i.e. using non-custodial wallets or dApps), then it’s not really your crypto.
Engrained in the early culture of Bitcoin has always been a strong distrust for centralized authority and power — including the too-big-to-fail government-backed financial system. In the midst of the Financial Crisis, Satoshi Nakamoto included this headline in Bitcoin’s genesis block: “Chancellor on brink of second bailout for banks.” There has always been a close connection between libertarianism & cryptocurrency.
So it’s no surprise that much of the crypto developer community is spending their time building applications that are non-custodial or decentralized. It’s part of the DNA, the soul, the essence of our community.
Personal ExperienceWhen I was at Mainframe, we built Mainframe OS — a platform that developers use to build and launch decentralized applications (dApps). I’m deeply familiar with what’s possible and what’s not in the world of dApps. I have the battle scars and gray hair to prove it. We’ve hosted panels around the various challenges. We’ve even produced videos poking fun at how complicated it is for end-users to interact with.
After having spent three years in the trenches of this non-custodial world, I no longer believe that decentralized applications are capable of bringing crypto to the masses.While I totally understand and appreciate the ethos of self-sovereignty, independence, and liberty… I think it’s a terrible mistake that as a community we are spending most of our time in this area of application development. Decentralized applications will not take crypto to the masses.
Overwhelming FrictionThe user friction that comes with decentralized applications is just too overwhelming. Let’s go through a few of the bigger points:
What Our Industry Has WrongDecentralized applications will always have a place in the market — especially among the most hardcore crypto people and parts of the world where these tools are essential. I’m personally an active user of many non-custodial products. I’m a blockchain early-adopter, I like to hold my own money, and I’m very forgiving of suboptimal UX.
However, I’m not afraid to say the poop stinks. Decentralized applications simply cannot produce the type of product experience that mainstream consumers expect.If the goal is growth and adoption, as a community I believe we’re barking up the wrong tree. We are trying to make fetch happen. It isn’t gonna happen. Our Netscape Moment is unlikely to arrive as long as we’re focused on decentralized applications.
\"Mean Girls\" movie
There’s a reason why the most popular consumer applications are centralized (Spotify, Amazon, Instagram, etc). There’s a reason why the most popular crypto applications are centralized (Coinbase, Binance, etc).
The frameworks, tooling, infrastructure, and services to support these modern, centralized applications are mature and well-established. It’s easier to build apps that are fast & performant. It’s easier to launch apps that are convenient and on all form-factors (especially mobile). It’s easier to distribute and promote via all the major app store channels (iOS/Android). It’s easier to patch, update, and upgrade. It’s easier to experiment and iterate.
It’s easier to design, build, and launch a world-class application when it is centralized! It is why we’ve chosen this path for Genesis Block.---
Other Ways to Consume This Content:
Have you already downloaded the app? We're Genesis Block, a new digital bank that's powered by crypto & decentralized protocols. The app is live in the App Store (iOS & Android). Get the link to download at https://genesisblock.com/download
Contentssubmitted by D-platform to u/D-platform [link] [comments]
Proof of Work (commonly abbreviated to PoW) is a mechanism for preventing double-spends. Most major cryptocurrencies use this as their consensus algorithm. That’s just what we call a method for securing the cryptocurrency’s ledger.
Proof of Work was the first consensus algorithm to surface, and, to date, remains the dominant one. It was introduced by Satoshi Nakamoto in the 2008 Bitcoin white paper, but the technology itself was conceived long before then.
Adam Back’s HashCash is an early example of a Proof of Work algorithm in the pre-cryptocurrency days. By requiring senders to perform a small amount of computing before sending an email, receivers could mitigate spam. This computation would cost virtually nothing to a legitimate sender, but quickly add up for someone sending emails en masse.
What is a double-spend?A double-spend occurs when the same funds are spent more than once. The term is used almost exclusively in the context of digital money — after all, you’d have a hard time spending the same physical cash twice. When you pay for a coffee today, you hand cash over to a cashier who probably locks it in a register. You can’t go to the coffee shop across the road and pay for another coffee with the same bill.
In digital cash schemes, there’s the possibility that you could. You’ve surely duplicated a computer file before — you just copy and paste it. You can email the same file to ten, twenty, fifty people.
Since digital money is just data, you need to prevent people from copying and spending the same units in different places. Otherwise, your currency will collapse in no time.
For a more in-depth look at double-spending, check out Double Spending Explained.
Why is Proof of Work necessary?If you’ve read our guide to blockchain technology, you’ll know that users broadcast transactions to the network. Those transactions aren’t immediately considered valid, though. That only happens when they get added to the blockchain.
The blockchain is a big database that every user can see, so they can check if funds have been spent before. Picture it like this: you and three friends have a notepad. Anytime one of you wants to make a transfer of whatever units you’re using, you write it down — Alice pays Bob five units, Bob pays Carol two units, etc.
There’s another intricacy here — each time you make a transaction, you refer to the transaction where the funds came from. So, if Bob was paying Carol with two units, the entry would actually look like the following: Bob pays Carol two units from this earlier transaction with Alice.
Now, we have a way to track the units. If Bob tries to make another transaction using the same units he just sent to Carol, everyone will know immediately. The group won’t allow the transaction to be added to the notepad.
Now, this might work well in a small group. Everyone knows each other, so they’ll probably agree on which of the friends should add transactions to the notepad. What if we want a group of 10,000 participants? The notepad idea doesn’t scale well, because nobody wants to trust a stranger to manage it.
This is where Proof of Work comes in. It ensures that users aren’t spending money that they don’t have the right to spend. By using a combination of game theory and cryptography, a PoW algorithm enables anyone to update the blockchain according to the rules of the system.
How does PoW work?Our notepad above is the blockchain. But we don’t add transactions one by one — instead, we lump them into blocks. We announce the transactions to the network, then users creating a block will include them in a candidate block. The transactions will only be considered valid once their candidate block becomes a confirmed block, meaning that it has been added to the blockchain.
Appending a block isn’t cheap, however. Proof of Work requires that a miner (the user creating the block) uses up some of their own resources for the privilege. That resource is computing power, which is used to hash the block’s data until a solution to a puzzle is found.
Hashing the block’s data means that you pass it through a hashing function to generate a block hash. The block hash works like a “fingerprint” — it’s an identity for your input data and is unique to each block.
It’s virtually impossible to reverse a block hash to get the input data. Knowing an input, however, it’s trivial for you to confirm that the hash is correct. You just have to submit the input through the function and check if the output is the same.
In Proof of Work, you must provide data whose hash matches certain conditions. But you don’t know how to get there. Your only option is to pass your data through a hash function and to check if it matches the conditions. If it doesn’t, you’ll have to change your data slightly to get a different hash. Changing even one character in your data will result in a totally different result, so there’s no way of predicting what an output might be.
As a result, if you want to create a block, you’re playing a guessing game. You typically take information on all of the transactions that you want to add and some other important data, then hash it all together. But since your dataset won’t change, you need to add a piece of information that is variable. Otherwise, you would always get the same hash as output. This variable data is what we call a nonce. It’s a number that you’ll change with every attempt, so you’re getting a different hash every time. And this is what we call mining.
Summing up, mining is the process of gathering blockchain data and hashing it along with a nonce until you find a particular hash. If you find a hash that satisfies the conditions set out by the protocol, you get the right to broadcast the new block to the network. At this point, the other participants of the network update their blockchains to include the new block.
For major cryptocurrencies today, the conditions are incredibly challenging to satisfy. The higher the hash rate on the network, the more difficult it is to find a valid hash. This is done to ensure that blocks aren’t found too quickly.
As you can imagine, trying to guess massive amounts of hashes can be costly on your computer. You’re wasting computational cycles and electricity. But the protocol will reward you with cryptocurrency if you find a valid hash.
Let’s recap what we know so far:
That’s where public-key cryptography comes in. We won’t go into depth in this article, but check out What is Public-Key Cryptography? for a comprehensive look at it. In short, we use some neat cryptographic tricks that allow any user to verify whether someone has a right to move the funds they’re attempting to spend.
When you create a transaction, you sign it. Anyone on the network can compare your signature with your public key, and check whether they match. They’ll also check if you can actually spend your funds and that the sum of your inputs is higher than the sum of your outputs (i.e., that you’re not spending more than you have).
Any block that includes an invalid transaction will be automatically rejected by the network. It’s expensive for you to even attempt to cheat. You’ll waste your own resources without any reward.
Therein lies the beauty of Proof of Work: it makes it expensive to cheat, but profitable to act honestly. Any rational miner will be seeking ROI, so they can be expected to behave in a way that guarantees revenue.
Proof of Work vs. Proof of StakeThere are many consensus algorithms, but one of the most highly-anticipated ones is Proof of Stake (PoS). The concept dates back to 2011, and has been implemented in some smaller protocols. But it has yet to see adoption in any of the big blockchains.
In Proof of Stake systems, miners are replaced with validators. There’s no mining involved and no race to guess hashes. Instead, users are randomly selected — if they’re picked, they must propose (or “forge”) a block. If the block is valid, they’ll receive a reward made up of the fees from the block’s transactions.
Not just any user can be selected, though — the protocol chooses them based on a number of factors. To be eligible, participants must lock up a stake, which is a predetermined amount of the blockchain’s native currency. The stake works like bail: just as defendants put up a large sum of money to disincentivize them from skipping trial, validators lock up a stake to disincentivize cheating. If they act dishonestly, their stake (or a portion of it) will be taken.
Proof of Stake does have some benefits over Proof of Work. The most notable one is the smaller carbon footprint — since there’s no need for high-powered mining farms in PoS, the electricity consumed is only a fraction of that consumed in PoW.
That said, it has nowhere near the track record of PoW. Although it could be perceived as wasteful, mining is the only consensus algorithm that’s proven itself at scale. In just over a decade, it has secured trillions of dollars worth of transactions. To say with certainty whether PoS can rival its security, staking needs to be properly tested in the wild.
Closing thoughtsProof of Work was the original solution to the double-spend problem and has proven to be reliable and secure. Bitcoin proved that we don’t need centralized entities to prevent the same funds from being spent twice. With clever use of cryptography, hash functions, and game theory, participants in a decentralized environment can agree on the state of a financial database.
https://preview.redd.it/giu1ssilga151.jpg?width=900&format=pjpg&auto=webp&s=41510785ccdc0d99544ec74229f62427d1c0ce3esubmitted by 58CoinExchange to u/58CoinExchange [link] [comments]
Museum has played the role of a time recorder. Talking about bitcoin, more than ten years has passed since the creation of it. Although it is uncomparable to the stock market with a hundred years of history, during the ten years, in the different stages of the development of bitcoin and blockchain have continuously poured in geeks, miners, speculators, newbies, leaving keywords such as sudden rich, myth, scam, belief, revolution, etc.
There are also many “old objects” with stories in the “Museum” of the cryptocurrency realm. On Museum Day, let ’s review the stories brought by these “old objects”.
The First Digital Currency White Paper — Bitcoin White Paper
On Oct. 31, 2008, Satoshi Nakamoto released the Bitcoin white paper — A Peer-to-Peer Electronic Cash System in the cryptographic mail group where he belongs, and Bitcoin was born since then.
A white paper is a document that explains the purpose and technology used in cryptocurrency. Usually a cryptocurrency uses the white paper to help people understand what it provides, and it is also an important information channel for investors to understand a project. Therefore, the level of the white paper affects people’s confidence towards the coin.
In a word, in the cryptocurrency and blockchain industry, the value of a white paper is equivalent to that of a standard financing speech. The white paper plays a vital role in this emerging market.
The First Public Bitcoin-Physical Transaction — Pizza
Since Satoshi Nakamoto mined the Bitcoin genesis block on January 3, 2009, Bitcoin has only been spread among the small crowd and has not realized its value.
Not until May 22, 2010, Bitcoin enthusiast “Laszlo Hanyecz” bought a pizza coupon worth $25 with 10,000 bitcoins. This is the first public bitcoin-physical transaction. Bitcoin has its price with 0.3 cents per bitcoin.
This day has also become the famous “Bitcoin Pizza Day” in Bitcoin history. Bitcoin as the imagination of the financial system has more practical significance. The tenth anniversary is coming. How will you commemorate it? Will you buy a pizza?
The First Digital Asset Exchange — Bitcoinmarket.com
After the birth of Bitcoin, in addition to mining, the only way to get Bitcoin in the early days was to conduct transactions on forums or IRC (commonly known as Internet Relay Chat). However, this method involves both long transaction time and great security risk.
In March 2010, the first digital asset exchange — Bitcoinmarket.com launched. However, due to lack of liquidity and transaction depth, it disappeared soon after its establishment, but Bitcoinmarket.com opened the era of the operation of the cryptocurrency realm exchange 1.0.
On June 9, 2011, China’s first Bitcoin exchange — Bitcoin China (BTCChina) launched. Its founder, Yang Linke, translated Bitcoin into Chinese “比特币” for the first time. In 2013, China’s bitcoin trading entered the golden age, and exchanges sprung up. China monopolized more than 90% of the world’s bitcoin transactions. Now, if the top three exchanges Binance, Huobi Global, OKEx are the Exchange 2.0, then the index exchange represented by 58COIN called the 3.0 version, leading the trend.
The First Generation of High-Performance Miner — ASIC Miner
When Satoshi Nakamoto created Bitcoin, the only way to get it is to use computers (including home computers) to mine, mainly relying on the CPU to calculate. However, as the value of digital currencies such as Bitcoin has become higher and higher, mining has become an industry with the competition is getting fiercer, accompanied by increasing difficulty of mining. Therefore, hardware performance competition starts.
In July 2012, the genius Jiang Xinyu (Internet nickname is “Friedcat”) from the junior class of the University of Science and Technology declared at the forum that he could make ASIC miners (chips). As far as mining computing power is concerned, ASICs can be tens of thousands or more higher than the same-generation CPUs and GPUs.
At the beginning of 2013, Zhang Nanqian (Pumpkin Zhang), a suspended doctoral student from the Beijing University of Aeronautics and Astronautics, developed the ASIC miner and named it “Avalon”.
In June 2013, the Friedcat’s miner USB was finally released, and it maintained 20% of the computing power of the entire network.
At the end of 2013, Wu Jihan, used the tens of millions yuan earned from Friedcat through investment, worked together with Jenke group, to develop the Antminer S1. Since then, the miner manufacturer Bitmain began to enter the stage of history.
It is no exaggeration to say that Friedcat and Zhang Nangeng have opened the domestic “mining” era.
The Birthplace of China’s Bitcoin — Garage Coffee
It is not only the “old objects” that record history, but also a place that everyone in the cryptocurrency realm aspires to.
Guo Hongcai once said, “Without no The Garage Café, there will be no cryptocurrency realm today. Since it is a very mysterious place that all waves of people from the café joint together to create today’s digital asset industry.
▲ In March 2013, American student Jake Smith successfully purchased a cup of coffee at The Garage Café with 0.131 bitcoins. This move attracted the attention of CCTV, and it conducted an interview.
Indeed, The Garage Café is the world ’s first entrepreneurial-themed coffee shop. It has been legendary since its establishment in 2011. The Garage Cafét is not only the core coordinate on China’s Bitcoin map, but also the birthplace of the Chinese cryptocurrency circle, where digital asset realm tycoons including Guo Hongcai, Zhao Dong, Li Xiaolai, Li Lin have made their ways.
The development of digital currency is only 11 years old. Through these “old objects”, we review the various stories of this wave of technology together, hoping to help you understand the development process of the digital currency field. Meanwhile, I also remind all practitioners to use history as a mirror and forge ahead.
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1. What is Bitcoin (BTC)?
2. Bitcoin’s core featuresFor a more beginner’s introduction to Bitcoin, please visit Binance Academy’s guide to Bitcoin.
Unspent Transaction Output (UTXO) modelA UTXO transaction works like cash payment between two parties: Alice gives money to Bob and receives change (i.e., unspent amount). In comparison, blockchains like Ethereum rely on the account model.
Nakamoto consensusIn the Bitcoin network, anyone can join the network and become a bookkeeping service provider i.e., a validator. All validators are allowed in the race to become the block producer for the next block, yet only the first to complete a computationally heavy task will win. This feature is called Proof of Work (PoW).
The probability of any single validator to finish the task first is equal to the percentage of the total network computation power, or hash power, the validator has. For instance, a validator with 5% of the total network computation power will have a 5% chance of completing the task first, and therefore becoming the next block producer.
Since anyone can join the race, competition is prone to increase. In the early days, Bitcoin mining was mostly done by personal computer CPUs.
As of today, Bitcoin validators, or miners, have opted for dedicated and more powerful devices such as machines based on Application-Specific Integrated Circuit (“ASIC”).
Proof of Work secures the network as block producers must have spent resources external to the network (i.e., money to pay electricity), and can provide proof to other participants that they did so.
With various miners competing for block rewards, it becomes difficult for one single malicious party to gain network majority (defined as more than 51% of the network’s hash power in the Nakamoto consensus mechanism). The ability to rearrange transactions via 51% attacks indicates another feature of the Nakamoto consensus: the finality of transactions is only probabilistic.
Once a block is produced, it is then propagated by the block producer to all other validators to check on the validity of all transactions in that block. The block producer will receive rewards in the network’s native currency (i.e., bitcoin) as all validators approve the block and update their ledgers.
Block productionThe Bitcoin protocol utilizes the Merkle tree data structure in order to organize hashes of numerous individual transactions into each block. This concept is named after Ralph Merkle, who patented it in 1979.
With the use of a Merkle tree, though each block might contain thousands of transactions, it will have the ability to combine all of their hashes and condense them into one, allowing efficient and secure verification of this group of transactions. This single hash called is a Merkle root, which is stored in the Block Header of a block. The Block Header also stores other meta information of a block, such as a hash of the previous Block Header, which enables blocks to be associated in a chain-like structure (hence the name “blockchain”).
An illustration of block production in the Bitcoin Protocol is demonstrated below.
Block time and mining difficultyBlock time is the period required to create the next block in a network. As mentioned above, the node who solves the computationally intensive task will be allowed to produce the next block. Therefore, block time is directly correlated to the amount of time it takes for a node to find a solution to the task. The Bitcoin protocol sets a target block time of 10 minutes, and attempts to achieve this by introducing a variable named mining difficulty.
Mining difficulty refers to how difficult it is for the node to solve the computationally intensive task. If the network sets a high difficulty for the task, while miners have low computational power, which is often referred to as “hashrate”, it would statistically take longer for the nodes to get an answer for the task. If the difficulty is low, but miners have rather strong computational power, statistically, some nodes will be able to solve the task quickly.
Therefore, the 10 minute target block time is achieved by constantly and automatically adjusting the mining difficulty according to how much computational power there is amongst the nodes. The average block time of the network is evaluated after a certain number of blocks, and if it is greater than the expected block time, the difficulty level will decrease; if it is less than the expected block time, the difficulty level will increase.
What are orphan blocks?In a PoW blockchain network, if the block time is too low, it would increase the likelihood of nodes producingorphan blocks, for which they would receive no reward. Orphan blocks are produced by nodes who solved the task but did not broadcast their results to the whole network the quickest due to network latency.
It takes time for a message to travel through a network, and it is entirely possible for 2 nodes to complete the task and start to broadcast their results to the network at roughly the same time, while one’s messages are received by all other nodes earlier as the node has low latency.
Imagine there is a network latency of 1 minute and a target block time of 2 minutes. A node could solve the task in around 1 minute but his message would take 1 minute to reach the rest of the nodes that are still working on the solution. While his message travels through the network, all the work done by all other nodes during that 1 minute, even if these nodes also complete the task, would go to waste. In this case, 50% of the computational power contributed to the network is wasted.
The percentage of wasted computational power would proportionally decrease if the mining difficulty were higher, as it would statistically take longer for miners to complete the task. In other words, if the mining difficulty, and therefore targeted block time is low, miners with powerful and often centralized mining facilities would get a higher chance of becoming the block producer, while the participation of weaker miners would become in vain. This introduces possible centralization and weakens the overall security of the network.
However, given a limited amount of transactions that can be stored in a block, making the block time too longwould decrease the number of transactions the network can process per second, negatively affecting network scalability.
3. Bitcoin’s additional features
Segregated Witness (SegWit)Segregated Witness, often abbreviated as SegWit, is a protocol upgrade proposal that went live in August 2017.
SegWit separates witness signatures from transaction-related data. Witness signatures in legacy Bitcoin blocks often take more than 50% of the block size. By removing witness signatures from the transaction block, this protocol upgrade effectively increases the number of transactions that can be stored in a single block, enabling the network to handle more transactions per second. As a result, SegWit increases the scalability of Nakamoto consensus-based blockchain networks like Bitcoin and Litecoin.
SegWit also makes transactions cheaper. Since transaction fees are derived from how much data is being processed by the block producer, the more transactions that can be stored in a 1MB block, the cheaper individual transactions become.
The legacy Bitcoin block has a block size limit of 1 megabyte, and any change on the block size would require a network hard-fork. On August 1st 2017, the first hard-fork occurred, leading to the creation of Bitcoin Cash (“BCH”), which introduced an 8 megabyte block size limit.
Conversely, Segregated Witness was a soft-fork: it never changed the transaction block size limit of the network. Instead, it added an extended block with an upper limit of 3 megabytes, which contains solely witness signatures, to the 1 megabyte block that contains only transaction data. This new block type can be processed even by nodes that have not completed the SegWit protocol upgrade.
Furthermore, the separation of witness signatures from transaction data solves the malleability issue with the original Bitcoin protocol. Without Segregated Witness, these signatures could be altered before the block is validated by miners. Indeed, alterations can be done in such a way that if the system does a mathematical check, the signature would still be valid. However, since the values in the signature are changed, the two signatures would create vastly different hash values.
For instance, if a witness signature states “6,” it has a mathematical value of 6, and would create a hash value of 12345. However, if the witness signature were changed to “06”, it would maintain a mathematical value of 6 while creating a (faulty) hash value of 67890.
Since the mathematical values are the same, the altered signature remains a valid signature. This would create a bookkeeping issue, as transactions in Nakamoto consensus-based blockchain networks are documented with these hash values, or transaction IDs. Effectively, one can alter a transaction ID to a new one, and the new ID can still be valid.
This can create many issues, as illustrated in the below example:
Since the transaction malleability issue is fixed, Segregated Witness also enables the proper functioning of second-layer scalability solutions on the Bitcoin protocol, such as the Lightning Network.
Lightning NetworkLightning Network is a second-layer micropayment solution for scalability.
Specifically, Lightning Network aims to enable near-instant and low-cost payments between merchants and customers that wish to use bitcoins.
Lightning Network was conceptualized in a whitepaper by Joseph Poon and Thaddeus Dryja in 2015. Since then, it has been implemented by multiple companies. The most prominent of them include Blockstream, Lightning Labs, and ACINQ.
A list of curated resources relevant to Lightning Network can be found here.
In the Lightning Network, if a customer wishes to transact with a merchant, both of them need to open a payment channel, which operates off the Bitcoin blockchain (i.e., off-chain vs. on-chain). None of the transaction details from this payment channel are recorded on the blockchain, and only when the channel is closed will the end result of both party’s wallet balances be updated to the blockchain. The blockchain only serves as a settlement layer for Lightning transactions.
Since all transactions done via the payment channel are conducted independently of the Nakamoto consensus, both parties involved in transactions do not need to wait for network confirmation on transactions. Instead, transacting parties would pay transaction fees to Bitcoin miners only when they decide to close the channel.
One limitation to the Lightning Network is that it requires a person to be online to receive transactions attributing towards him. Another limitation in user experience could be that one needs to lock up some funds every time he wishes to open a payment channel, and is only able to use that fund within the channel.
However, this does not mean he needs to create new channels every time he wishes to transact with a different person on the Lightning Network. If Alice wants to send money to Carol, but they do not have a payment channel open, they can ask Bob, who has payment channels open to both Alice and Carol, to help make that transaction. Alice will be able to send funds to Bob, and Bob to Carol. Hence, the number of “payment hubs” (i.e., Bob in the previous example) correlates with both the convenience and the usability of the Lightning Network for real-world applications.
Schnorr Signature upgrade proposalElliptic Curve Digital Signature Algorithm (“ECDSA”) signatures are used to sign transactions on the Bitcoin blockchain.
However, many developers now advocate for replacing ECDSA with Schnorr Signature. Once Schnorr Signatures are implemented, multiple parties can collaborate in producing a signature that is valid for the sum of their public keys.
This would primarily be beneficial for network scalability. When multiple addresses were to conduct transactions to a single address, each transaction would require their own signature. With Schnorr Signature, all these signatures would be combined into one. As a result, the network would be able to store more transactions in a single block.
The reduced size in signatures implies a reduced cost on transaction fees. The group of senders can split the transaction fees for that one group signature, instead of paying for one personal signature individually.
Schnorr Signature also improves network privacy and token fungibility. A third-party observer will not be able to detect if a user is sending a multi-signature transaction, since the signature will be in the same format as a single-signature transaction.
4. Economics and supply distributionThe Bitcoin protocol utilizes the Nakamoto consensus, and nodes validate blocks via Proof-of-Work mining. The bitcoin token was not pre-mined, and has a maximum supply of 21 million. The initial reward for a block was 50 BTC per block. Block mining rewards halve every 210,000 blocks. Since the average time for block production on the blockchain is 10 minutes, it implies that the block reward halving events will approximately take place every 4 years.
As of May 12th 2020, the block mining rewards are 6.25 BTC per block. Transaction fees also represent a minor revenue stream for miners.
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