Qu'est-ce que le HBAR ? Une introduction à Hedera Hashgraph
Le mécanisme de consensus de l'algorithme hashgraph de Hedera gagne en popularité. Mais qu'est-ce que Hedera et son jeton natif HBAR?
Hedera Price (HBAR)
undefined (undefined) Past month
Hedera price in
Hedera Price Live Data
The live HBAR price is currently {{current_price}}, {{up_down_24h}} {{price_change_percentage_24h_in_currency}} in the last 24-hours. Hedera's 24-hour trading volume is {{total_volume}}. Hedera is currently {{market_cap_rank}} by market capitalization, which is calculated by multiplying the current price ({{current_price}}) with the circulating supply ({{circulating_supply}}). The market capitalization for Hedera is {{market_cap}}. HBAR has a circulating supply of {{circulating_supply}} and a max supply of {{max_supply}}. To buy HBAR at the current rate, visit moonpay/buy/hbar.
HBAR Price Performance
| Change | Amount | % |
|---|---|---|
Hedera Price Information
24h Low & High
Low: 0.00High: 0.00
All Time High
Price Change (1h)
Price Change (24h)
Price Change (7d)
HBAR Market information
Popularity
Market Cap
Volume (24h)
Circulation Supply
About Hedera (HBAR)
Hedera Hashgraph is a decentralized public ledger (similar to blockchain) that is designed to provide fast, secure, and low-fee transactions. It is based on a data structure known as a Directed Acyclic Graph (DAG), which enables multiple transactions to occur simultaneously, improving scalability and efficiency compared to traditional blockchains.
HBAR is the native cryptocurrency of the Hedera Hashgraph network and serves as a utility token for various purposes. It can be used to pay transaction fees, access network services, and participate in the network's governance through staking and voting.
One of the key features of Hedera is its focus on security and stability. The network employs Asynchronous Byzantine fault-tolerant consensus, which means it can withstand attacks and maintain consistency even if a portion of the participants are malicious or faulty. This makes Hedera suitable for applications that require a high level of security, such as financial services, supply chain management, and decentralized applications (dApps).
Hedera has gained attention for its partnerships with major companies and organizations, including Google, IBM, and the International Swaps and Derivatives Association (ISDA). These partnerships aim to leverage the capabilities of Hedera for various use cases and promote the adoption of distributed ledger technology.
Hedera price history
2018
2018 marked the launch of Hedera (HBAR), and tokens started trading on exchanges in August of that year. The HBAR token sale lasted just over a month, from July to August, and raised $100 million at $0.15 per HBAR coin.
2019
Hedera launched its mainnet in September 2019, introducing HBAR as the native cryptocurrency of the platform. Initially, the HBAR price was relatively low, as the project was still in its early stages and gaining traction. The focus during this year was on establishing the foundation for the ecosystem and attracting initial partnerships and developers.
HBAR tokens ended the year trading at around $0.02 – a significant decline from the sale price of $0.15.
2020
In 2020, Hedera Hashgraph made significant progress in terms of partnerships and adoption. It secured notable partnerships with companies like Google, IBM, and Tata Communications, which brought increased attention and credibility to the project. As a result, the price of Hedera recovered significantly, and HBAR traded at around $0.05 per token for most of the year.
2021
2021 witnessed substantial growth for Hedera Hashgraph, and the HBAR price crossed the $0.40 mark by the end of March. The project continued to expand its ecosystem and attracted more developers and enterprises to build on its platform. Notably, Hedera announced the open access of its mainnet, allowing anyone to develop and deploy applications on the Hedera network.
2022
HBAR price saw a steep decline in value in 2022. The primary reason for this could be the overall crypto bear market. HBAR tokens ended the year trading at around $0.04.
2023
Hedera started the year trading at around $0.038 per token, before jumping up to a value of $0.955 in February. Since then, the token has mostly been on a decline, dipping back down to $0.04 by June.
How does Hedera work?
Hedera uses a hashgraph consensus algorithm, setting it apart from traditional blockchain network cryptocurrencies. The hashgraph consensus algorithm is based on a combination of two fundamental components: the gossip protocol and virtual voting.
Gossip Protocol: In the gossip protocol, participants in the network share information with each other by randomly selecting and exchanging messages. Each participant gossips or spreads information it has received to a subset of other participants. Through this process, information quickly propagates throughout the network.
Virtual Voting: In virtual voting, each participant maintains a virtual vote on the order of transactions based on the information it has received through the gossip protocol. The voting process is probabilistic, meaning that each participant assigns a probability to different possible orders of transactions based on the received information. This voting is done independently by each participant.
By combining the gossip protocol and virtual voting, Hashgraph enables network participants to reach a consensus on the order and validity of transactions without the need for a central authority or leader. This consensus algorithm has several notable properties:
Asynchronous Byzantine Fault Tolerance (ABFT): Hashgraph achieves Byzantine fault tolerance, meaning it can resist attacks even if a portion of participants are malicious or faulty. This is accomplished by using cryptographic signatures to ensure the integrity of information and a voting algorithm that prevents manipulation by malicious actors.
Fast finality: Hashgraph achieves fast finality, meaning once consensus is reached on a transaction, it is considered irreversible and permanently recorded in the ledger. This allows for quick transaction confirmation without the need for extensive block confirmations or waiting for multiple rounds of voting.
High scalability: Hashgraph is designed to be highly scalable, allowing for high throughput and low-latency transactions. The use of the gossip protocol and parallel processing enables multiple transactions to occur simultaneously, improving overall network efficiency.
Fairness: Hashgraph provides fairness by ensuring that all participants have an equal opportunity to contribute to the consensus process. It prevents certain participants from gaining an unfair advantage through strategies like front-running or prioritizing their transactions.
Who are the founders of Hedera?
Hedera Hashgraph was founded by Dr. Leemon Baird and Mance Harmon.
Dr. Leemon Baird is a computer scientist and one of the co-founders of Hedera Hashgraph. He holds a Ph.D. in Computer Science from Carnegie Mellon University and has extensive experience in the field of distributed systems and cybersecurity. Dr. Baird is the inventor of the Hashgraph consensus algorithm, which forms the basis of the Hedera network.
Mance Harmon is a technology executive and entrepreneur who co-founded Hedera Hashgraph. He has a background in computer science and holds an MBA from the University of Texas. Harmon previously served in various leadership roles in companies focused on cybersecurity and enterprise software.
What is Hedera used for?
Hedera Hashgraph is used for a variety of applications, including financial services, supply chain management, smart contracts, decentralized applications (dApps), and more. The use cases of Hedera are enabled by its features such as high scalability, asynchronous Byzantine Fault Tolerance (ABFT), fast finality, and fairness.
What makes Hedera unique?
The main feature that makes Hedera unique is its hashgraph distributed consensus algorithm, which sets it apart from other cryptocurrencies that use traditional blockchain technology.
DAGs (Directed Acyclic Graphs) also play a significant role in the uniqueness of Hedera Hashgraph. DAGs are a type of data structure in which network nodes are connected by edges, creating a network.
Transaction parallelism is a key aspect that sets Hedera apart. Unlike traditional blockchain systems, which process transactions sequentially within blocks, Hedera's DAG structure allows for the concurrent transaction processing. This parallelism enhances scalability and throughput, enabling multiple transactions to be executed simultaneously and improving the overall efficiency of the network.
Another distinctive feature of Hedera's DAG-based consensus algorithm is its achievement of asynchronous Byzantine fault tolerance (ABFT). This means that consensus can be reached even in the presence of malicious actors or faulty nodes, without relying on synchronized clocks. The DAG structure facilitates efficient communication and information propagation, making the network resilient against attacks and ensuring the integrity of consensus.
The DAG structure in the Hedera Hashgraph also enables fast finality and low latency. Once consensus is reached on a transaction, it becomes permanently recorded in the ledger, rendering it irreversible. This eliminates the need for long confirmation times or multiple block confirmations, resulting in faster transaction processing and reduced latency.
How can I mine or stake Hedera?
Hedera is a Proof of Stake decentralized public ledger, so HBAR can be staked, though not mined.
Here's how you can stake HBAR without technical expertise:
Set up a wallet to store HBAR
Purchase HBAR via MoonPay
Delegate your HBAR to a validator
Earn staking rewards in HBAR
Trending cryptos
More FAQs about Hedera (HBAR)
The price of {{token_name}} is determined by factors such as supply and demand, market sentiment, regulatory developments, and the adoption of blockchain technology. Price fluctuations can also occur in response to large transfers of the asset in a short time period.
The all-time high of Hedera (HBAR) is $0.5701, which was reached on September 16, 2021.
The all-time low of HBAR is $0.01001, which was reached on January 2, 2020.
Hedera (HBAR) is a deflationary cryptocurrency in the long term, which means it has a capped maximum supply. There will only ever be 50 billion HBAR tokens (all of which have been minted in 2018), of which over {{circulating_supply}} are already in circulation.
You can buy Hedera directly via MoonPay or through one of our many partner wallets, such as Trust Wallet and Exodus. ---MoonPay’s simple widget makes it easy to buy HBAR with a credit or debit card, bank transfer, Apple Pay, Google Pay, and more payment methods. You can also fund your wallet with euros, pounds, or dollars and use your MoonPay Balance to purchase crypto like Hedera (HBAR). With MoonPay Balance, you'll enjoy faster transactions, lower fees, and higher approval rates.
