Bitcoin Cash (BCH) là gì?

Bitcoin Cash (BCH) la mot loai tien ky thuat so (mot dang tien ma hoa, tuc la tien ton tai tren internet thay vi trong ngan hang) duoc tao ra vao nam 2017 bang cach tach ra tu Bitcoin goc. Muc tieu rat don gian: tro thanh tien mat dien tu nhanh, re ma bat ky ai tren the gioi cung co the gui cho bat ky ai khac, giong nhu tin nhan van ban nhung mang theo tien. Ten goi thuong duoc viet tat la BCH, va hien tai dang xep hang #29 theo von hoa thi truong trong so tat ca cac loai tien ma hoa.

Bitcoin Cash la gi theo cach hieu don gian?

Hay tuong tuong ban va nhom ban cung chia se mot cuon so ma tat ca moi nguoi deu doc duoc, nhung khong ai co the bi mat xoa hay sua doi. Moi khi ai do thanh toan cho nguoi khac, mot dong moi duoc viet them de moi nguoi cung xem. Cuon so chung do duoc goi la blockchain (nhat ky giao dich cong khai duoc luu giu boi hang nghin may tinh cung mot luc). Bitcoin Cash giai thich trong mot cau: do la ban sao he thong cuon so cua Bitcoin, duoc thiet ke lai de nhieu dong hon vua vao moi trang, giup cac thanh toan nhanh chong va phi giao dich toi thieu.

Giac mo dang sau Bitcoin Cash crypto la co the su dung cho cac viec hang ngay, nhu mua mot ly ca phe hay gui tien cho gia dinh o nuoc ngoai, ma khong can ngan hang lam trung gian va khong phat sinh phi cao.

Ai da tao ra Bitcoin Cash va khi nao?

De hieu BCH ra doi nhu the nao, truoc tien ban can biet qua ve lich su Bitcoin. Bitcoin duoc phat minh vao nam 2009 voi tu cach la loai tien ma hoa dau tien. Khi no ngay cang pho bien, cong dong da bat dong ve mot cau hoi lon: Bitcoin nen phat trien nhu the nao de co the phuc vu nhieu nguoi dung hon?

Moi "trang" trong cuon so cua Bitcoin duoc goi la khoi (block), va mot khoi chi chua duoc mot luong giao dich nho (khoang 1 megabyte du lieu). Khi nhieu nguoi muon thanh toan cung luc, cac trang day len, thanh toan cham lai va phi tang len. Mot so nguoi muon giu khoi nho va them cac giai phap khac. Nhom khac thi muon don gian la mo rong cac trang.

Vao thang 8 nam 2017, nhom muon co khoi lon hon da tu chon con duong cua minh. Su chia re nay duoc goi la hard fork (khi mot blockchain chia thanh hai nut tach biet khong con dong thuan voi nhau). Con duong moi tro thanh Bitcoin Cash. Nhu vay, BCH khong phai do mot nha phat minh duy nhat xay dung tu dau; no duoc tao ra boi mot nhom nha phat trien va nhung nguoi ung ho chia se lich su Bitcoin den ngay do nam 2017, roi chon mot huong di khac.

Bitcoin Cash hoat dong nhu the nao?

Bitcoin Cash hoat dong gan giong het Bitcoin vi no bat dau nhu mot ban sao. Day la y tuong co ban:

• Ban so huu mot vi (wallet). Vi la ung dung luu giu khoa bi mat cua ban (mot mat khau dai chi ban biet) de chung minh rang cac dong tien la cua ban.
• Ban gui mot thanh toan. Vi cua ban bao cho mang: "Gui BCH nay den dia chi nay."
• Cac tho dao (miner) kiem tra. Cac may tinh dac biet goi la tho dao canh tranh de dong goi cac thanh toan moi vao mot khoi va them vao chuoi, nhan BCH moi lam phan thuong. He thong nay goi la Bang chung Cong viec (Proof of Work) (tho dao phai giai mot bai toan toan hoc kho de them mot khoi, khien viec gian lan tro nen cuc ky ton kem).
• Thanh toan duoc ghi lai mai mai. Khi giao dich cua ban da vao mot khoi, no tro thanh mot phan cua cuon so chung ma khong ai co the viet lai.

Su khac biet then chot la kich thuoc trang. Bitcoin Cash su dung cac khoi lon hon nhieu (da nang gioi han len cao hon nhieu so voi 1 megabyte goc cua Bitcoin, va sau do lai nang them). Cac trang lon hon cho phep nhieu giao dich vua cung mot luc, nen mang van nhanh va re ngay ca khi nhieu nguoi cung su dung.

Dieu gi khien Bitcoin Cash khac biet?

Su khac biet lon nhat la muc dich. Nhieu nguoi ngay nay xem Bitcoin la "vang ky thuat so", thu gi do de mua va giu dai han. Bitcoin Cash huong nguoc lai: no muon tro thanh tien ban thuc su chi tieu. Mot so yeu to giup thuc hien dieu do:

• Phi thap. Gui BCH thuong chi ton mot phan rat nho cua mot cent, nen ngay ca cac thanh toan nho cung co y nghia.
• Cac khoi nhanh va rong rai. Cac khoi lon giup mang xu ly nhieu thanh toan ma khong bi tac nghen.
• Cung mo hinh bao mat voi Bitcoin. Su dung cung cac thao tac khai thac Proof of Work va cung gioi han cung cap cung, nen ke thua thiet ke bao mat co ban cua Bitcoin.

Dieu quan trong can biet la Bitcoin Cash khong phai la dong tien giong Bitcoin, du ten tuong tu. Day la hai mang rieng biet voi gia ca, cong dong va dong tien rieng. So huu BCH khong co nghia la ban so huu BTC.

Co bao nhieu dong Bitcoin Cash?

Giong nhu Bitcoin, Bitcoin Cash co mot gioi han cung: se chi co toi da 21 trieu BCH. Khong ai co the in them tu khong khi, nham bao ve dong tien khoi mat gia tri theo cach tien giay mat gia khi qua nhieu duoc tao ra. Cac dong moi vao cham cham nhu phan thuong cho tho dao, va phan thuong do duoc giam mot nua khoang moi bon nam trong mot su kien goi la halving (cat giam).

Bitcoin Cash duoc dung de lam gi?

Bitcoin Cash duoc xay dung cho cac thanh toan hang ngay. Cac ung dung pho bien bao gom:

• Mua do. Mot so cua hang truc tuyen va thuc te chap nhan BCH.
• Gui tien qua bien gioi. Ban co the gui BCH den mot quoc gia khac trong vai phut, khong can ngan hang, voi phi cuc thap.
• Tipping va thanh toan nho. Vi phi qua thap, ngay ca viec gui vai cent cung thuc te.
• Tiet kiem. Giong cac loai tien ma hoa khac, mot so nguoi don gian la giu no.

Lam the nao de mua va luu tru Bitcoin Cash?

Ban co the mua BCH tren hau het cac san giao dich tien ma hoa lon (cac trang web noi ban doi tien thuong nhu do la hoac euro lay tien ma hoa). Sau khi mua, ban co hai lua chon chinh de luu tru an toan:

• De lai tren san giao dich. De dang, nhung san giao dich kiem soat cac dong tien cua ban, giong nhu de tien mat tai mot cua hang.
• Chuyen vao vi rieng. Vi phan mem (ung dung tren dien thoai hoac may tinh) hoac vi phan cung (thiet bi nho luu tru khoa ngoai mang) cho ban toan quyen kiem soat. Cau noi pho bien la "khong phai khoa cua ban, khong phai dong tien cua ban", co nghia la ban chi thuc su so huu tien ma hoa khi tu giu khoa bi mat.

Du ban chon gi, tuyet doi khong chia se khoa bi mat hoac cum tu khoi phuc. Trong tien ma hoa khong co nut "quen mat khau"; neu ban mat khoa, ban mat dong tien.

Bitcoin Cash co an toan khong? Cac rui ro can biet

Mang Bitcoin Cash hoat dong tu nam 2017 va su dung cong nghe da duoc kiem chung ky luong. Nhung "an toan" co hai nghia, va ban nen hieu ca hai:

• Rui ro gia ca. Giong tat ca cac loai tien ma hoa, gia tri cua BCH co the tang va giam manh va nhanh. No co the mat gia tri nhanh nhu no co the tang gia.
• Sai lam ca nhan. Gui den sai dia chi hoac mat khoa khong the hoan tac. Cac giao dich tien ma hoa la vinh vien.
• Lua dao. Cac chuong trinh tang qua gia mao, nhan vien ho tro gia mao va cac lien ket lua dao la pho bien trong tat ca cac loai tien ma hoa. Khong co du an that su nao yeu cau cum tu khoi phuc cua ban.

Day khong phai la loi khuyen tai chinh; do chi la cach cong nghe hoat dong. Luon tu nghien cuu truoc khi bo vao tien ma ban khong the chiu dung mat.

Bitcoin Cash co giong Bitcoin khong?

Khong. Bitcoin Cash tach khoi Bitcoin vao nam 2017 va gio day la mot mang rieng biet voi dong tien, gia ca va cong dong rieng. Chung chia se lich su den thoi diem tach ra nhung khong the thay the cho nhau.

Tai sao Bitcoin Cash duoc tao ra?

No duoc tao ra de lam cho cac khoi lon hon de mang co the xu ly nhieu thanh toan hon voi chi phi thap. Muc tieu la "tien mat dien tu" nhanh, re cho chi tieu hang ngay hon la chu yeu la kho luu tru gia tri dai han.

Bitcoin Cash giu phi thap nhu the nao?

Vi moi khoi chua nhieu giao dich hon thiet ke goc cua Bitcoin, mang hiem khi bi tac nghen. It tac nghen hon co nghia la it canh tranh cho khong gian, nen phi van o muc toi thieu.

Toi co the tieu BCH trong cuoc song thuc khong?

Co. Mot so nha ban hang truc tuyen va thuc te chap nhan BCH, va ban cung co the gui no truc tiep giua cac ca nhan o bat cu dau. Muc do chap nhan khac nhau theo khu vuc, nen tinh kha dung phu thuoc vao noi ban dang o.