NaslovnicaKripto za početnikeWhat is a blockchain?

What is a blockchain?

What is a blockchain?

Blockchain technology is at the heart of Bitcoin's and other cryptocurrencies' attractiveness and usefulness. Blockchain is, as its name implies, a collection of interconnected blocks or an online ledger. Each block comprises a collection of transactions that each network member has independently validated. Every new block must be validated by each node before being confirmed, making forging transaction histories nearly impossible. The contents of an online ledger must be agreed upon by the whole network of a single node, or computer, that keeps a copy of the ledger.

The purpose of blockchain is to enable for the recording and distribution of digital data without the ability to modify it. In this sense, a blockchain serves as the foundation for immutable ledgers, or transaction records that can't be changed, erased, or destroyed. Blockchains are also known as distributed ledger technology because of this (DLT).

The blockchain concept was first presented as a research project in 1991, and before its first popular use in Bitcoin, in 2009. The creation of numerous cryptocurrencies, decentralized finance (DeFi) applications, non-fungible tokens (NFTs), and smart contracts has skyrocketed the use of blockchains in the years after.

Decentralization is one of the most essential concepts in blockchain technology. The chain cannot be owned by a single computer or entity. Instead, the nodes connecting to the chain form a distributed ledger. Any type of electronic equipment that saves copies of the blockchain and keeps the network running is referred to as a node. Every node has its own copy of the blockchain, and for the chain to be updated, trusted, and confirmed, the network must algorithmically approve any newly mined block. Every action in the ledger can be easily reviewed and examined since blockchains are transparent. A unique alphanumeric identification number is assigned to each participant, which is used to track their transactions.

According to experts, blockchain technology can benefit a variety of sectors and activities, including supply chain management and online voting and crowdfunding. JPMorgan Chase & Co. (JPM) and other financial institutions are experimenting with blockchain technology to reduce transaction costs by simplifying payment processing.

Advantages of blockchain technology are:

- High-quality data

- It provides durability and high level of security

- It has big integrity, as well as transparency

- Longevity and reliability

- Simplified ecosystem

- Improved traceability

Disadvantages of blockchain technology are:

- Complex signature verification process (which can also be an advantage)

- Uncertain regulations

- Large energy consumption

- Privacy concerns and no control for enterprises

Provjerite ostale razine

Koristimo kolačiće za pohranu, pristup i obradu osobnih podataka kako bismo vam pružili najbolje online iskustvo. Klikom na Prihvati kolačiće pristajete na pohranu svih kolačića i osiguravate najbolje moguće djelovanje internetske stranice. Možete promijeniti postavke kolačića ili povući privolu klikom na Postavke kolačića. Da biste saznali više o kolačićima i svrhama, pročitajte Politika kolačića and Politika privatnosti

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Što su kolačići?

Kolačići su male tekstualne datoteke koje omogućuju nama i našoj usluzi jedinstvenu identifikaciju vašeg preglednika ili uređaja. Kolačići obično rade tako da vašem uređaju dodijele jedinstveni broj i na vašem ih pregledniku pohranjuju internetske stranice koje posjećujete, kao i treći pružatelji usluga za te internetske stranice. Pod pojmom kolačići treba uzeti u obzir druge tehnologije kao što su SDK-ovi, pikseli i lokalno pohranjivanje.


Ako je omogućeno

Možemo vas prepoznati kao klijenta što omogućava prilagođene usluge, sadržaj i oglašavanje, učinkovitost usluga i prepoznavanje uređaja za veću sigurnost
Možemo poboljšati vaše iskustvo na temelju vaše prethodne sesije
Možemo pratiti vaše preferencije i personalizirati usluge
Možemo poboljšati performanse internetske stranice.


Ako je onemogućeno

Nećemo moći zapamtiti vaše prethodne sesije, što će nam onemogućiti da internetsku stranicu prilagodimo vašim željama
Neke značajke možda neće biti dostupne i korisničko iskustvo bez kolačića će biti lošije


Strogo nužno znači da se osnovne funkcije internetske stranice neće aktivirati bez njihove upotrebe. Budući da su ovi kolačići ključni za pravilan rad i sigurnost usluga internetskog mjesta, ne možete odustati od korištenja ovih tehnologija. I dalje ih možete blokirati u svom pregledniku, ali to može uzrokovati greške u djelovanju osnovnih funkcija internetske stranice.

  • Postavljanje zaštite privatnosti
  • Sigurna prijava
  • Sigurna veza tijekom korištenja usluga
  • Ispunjavanje obrazaca

Analitika i tehnologije praćenja performansi za analizu načina na koji koristite internetsku stranicu.

  • Najgledanije stranice
  • Interakcija sa sadržajem
  • Analiza grešaka
  • Ispitivanje i mjerenje različitih učinkovitosti dizajna

Internetska stranica može koristiti tehnologije trećih strana za oglašavanje i marketing.

  • Promoviranje naših usluga na drugim platformama i internetskim stranicama
  • Mjerenje učinkovitosti naših kampanja