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  2. Blockchain - Wikipedia

    en.wikipedia.org/wiki/Blockchain

    Blockchain. A blockchain is a distributed ledger with growing lists of records (blocks) that are securely linked together via cryptographic hashes. [1][2][3][4] Each block contains a cryptographic hash of the previous block, a timestamp, and transaction data (generally represented as a Merkle tree, where data nodes are represented by leaves).

  3. Smart contract - Wikipedia

    en.wikipedia.org/wiki/Smart_contract

    In fact, blockchain technology reduces the costs for conducting of a lottery and is therefore beneficial for the participants. Randomness on blockchain can be implemented by using block hashes or timestamps, oracles, commitment schemes, special smart contracts like RANDAO [40] [41] and Quanta, as well as sequences from mixed strategy Nash ...

  4. Ethereum - Wikipedia

    en.wikipedia.org/wiki/Ethereum

    Ethereum-based permissioned blockchain variants are used and being investigated for various projects: In 2017, JPMorgan Chase proposed developing JPM Coin on a permissioned-variant of Ethereum blockchain dubbed "Quorum". [85] It is "designed to toe the line between private and public in the realm of shuffling derivatives and payments.

  5. Cryptocurrency - Wikipedia

    en.wikipedia.org/wiki/Cryptocurrency

    A blockchain is a continuously growing list of records, called blocks, which are linked and secured using cryptography. [ 62 ] [ 64 ] Each block typically contains a hash pointer as a link to a previous block, [ 64 ] a timestamp, and transaction data. [ 65 ]

  6. Cardano (blockchain platform) - Wikipedia

    en.wikipedia.org/wiki/Cardano_(blockchain_platform)

    Uses Distributed computing. Cardano is a public blockchain platform. It is open-source and decentralized, with consensus achieved using proof of stake. It can facilitate peer-to-peer transactions with its internal cryptocurrency, ADA. [5] Cardano's development began in 2015, led by Ethereum co-founder Charles Hoskinson.

  7. Chainlink (blockchain) - Wikipedia

    en.wikipedia.org/wiki/Chainlink_(blockchain)

    Technology. A visual representation of Chainlink's "smart bond architecture". Chainlink's decentralized oracle network is an open-source technology infrastructure that allows any blockchain to securely connect to off-chain data and computation resources. The network nodes fetch, validate, and deliver data from multiple sources onto blockchains ...

  8. Distributed ledger - Wikipedia

    en.wikipedia.org/wiki/Distributed_ledger

    Distributed ledger. A distributed ledger (also called a shared ledger or distributed ledger technology or DLT) is a system whereby replicated, shared, and synchronized digital data is geographically spread (distributed) across many sites, countries, or institutions. [1] In contrast to a centralized database, a distributed ledger does not ...

  9. Bitcoin - Wikipedia

    en.wikipedia.org/wiki/Bitcoin

    Bitcoin (abbreviation: BTC; sign: ₿) is the first decentralized cryptocurrency. Nodes in the peer-to-peer bitcoin network verify transactions through cryptography and record them in a public distributed ledger, called a blockchain, without central oversight.