Hedera hbar
What is Hedera?
Hedera is a public distributed ledger network built on Hashgraph, a directed acyclic graph (DAG)-based consensus algorithm rather than a conventional blockchain. Its native cryptocurrency is HBAR. Hedera combines proof-of-stake security with native Consensus, Token, and Smart Contract services for applications needing fast finality, predictable fees, and institutional governance. Hashgraph and Hedera platform code are open source under Apache 2.0.
What problem does Hedera solve?
Hedera addresses limitations of conventional ledgers for high-volume applications: slow or probabilistic settlement, fee volatility, unfair transaction ordering, energy-intensive mining, and governance that enterprises or regulated organizations may find difficult to evaluate. Consensus Service provides verifiable ordering and timestamps for events, while Token and Smart Contract services let organizations issue assets and automate workflows. The Governing Council provides multi-organization oversight rather than leaving upgrades and pricing to one company or anonymous leader set.
How does Hedera work?
A client creates and signs a transaction and submits it to a Hedera node. The node validates it, places it in an event, and gossips that event to randomly selected peers. Each event includes transaction data plus hashes pointing to the node's prior known events, creating a graph of communication history. Through gossip-about-gossip, nodes learn the graph; through virtual voting, each node derives how others would vote without separate vote messages. Nodes calculate a consensus timestamp based on network receipt and deterministically order valid transactions. Hashgraph is asynchronous Byzantine fault tolerant: with more than two-thirds of stake following the protocol, consensus is final rather than a probabilistic chain reorganization. HBAR pays network-service fees, supports proof-of-stake weighting, and is used for transfers, token operations, smart contracts, and consensus logging. Native Token Service supports fungible and non-fungible assets; Consensus Service orders application messages; Smart Contract Service executes Solidity/EVM-compatible contracts.
Key facts
- Network: Hedera public proof-of-stake distributed ledger; native asset HBAR
- Hashgraph inventor: Dr. Leemon Baird, Hedera co-founder and chief scientist; Hedera was co-founded with Mance Harmon
- Consensus: hashgraph DAG with gossip-about-gossip and virtual voting; asynchronous Byzantine fault tolerance (aBFT)
- Finality: consensus timestamps and transaction ordering are deterministic and final once consensus is reached; no block mining or block reorgs
- HBAR utility: pays fees for HBAR transfers, token minting/management, smart-contract execution, and consensus/data logging; can be staked to a node
- Services: Hedera Consensus Service, Hedera Token Service, and Solidity-based Smart Contract Service using Besu EVM
- Governance: Governing Council of up to 39 global organizations; equal votes, rotating/term-limited participation, and authority over software upgrades, network pricing, and treasury matters
- Council examples: Google, IBM, Boeing, LG Electronics, Deutsche Telekom, Ubisoft, Avery Dennison, ServiceNow, FedEx, and others; membership changes over time
- Enterprise use cases: tokenized real-world assets and stablecoins, supply-chain provenance, audit logs, AI/data integrity, enterprise messaging, payments, CBDCs, decentralized identity, NFTs, DeFi, and interoperability
- Launch: Hedera mainnet launched in 2019; HBAR is the native cryptocurrency
- Supply: Hedera token economics specify a maximum supply of 50 billion HBAR
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Frequently asked questions
What makes Hashgraph different from a blockchain?
Hashgraph does not package transactions into a single linear chain of blocks. Nodes gossip events and the history forms a DAG. Virtual voting lets nodes calculate one another's votes from the shared graph, allowing agreement on a consensus timestamp and transaction order without mining or extra vote messages.
Is Hedera's consensus secure?
Hedera documents hashgraph as asynchronous Byzantine fault tolerant (aBFT). Assuming more than two-thirds of participating stake follows the protocol, malicious members cannot prevent consensus or alter it after it is reached.
What is HBAR used for?
HBAR is the native utility token. Users and applications pay Hedera network fees in HBAR for transfers, token operations, smart-contract execution, and consensus-service messages. HBAR can also be staked to a node, with stake contributing to proof-of-stake consensus weight and potentially earning rewards under current rules.
What is the Hedera Governing Council?
The Governing Council is a rotating, term-limited group of up to 39 organizations from different industries and regions. Each member has an equal vote on software upgrades, network pricing, and treasury management. The model is designed to prevent one organization controlling the network.
What can enterprises build on Hedera?
Organizations can use Consensus Service for timestamped ordered audit trails and inter-company event streams; Token Service for regulated or configurable fungible and non-fungible assets; and Smart Contract Service for Solidity/EVM applications.
Does Hedera use proof of work?
No. Hedera uses proof of stake and hashgraph consensus. Nodes exchange and compute on signed events rather than competing to solve mining puzzles, avoiding proof-of-work mining and reducing wasted computation.
Are Hedera transactions reversible or probabilistic?
Hedera's consensus ordering is designed to provide absolute finality: once a valid transaction receives a consensus result, it is not later removed by a competing chain or ordinary reorganization.
What are Hedera Consensus Service and Token Service?
Consensus Service lets applications submit messages for trusted consensus timestamps and ordering, with results available through mirror nodes. Token Service provides native creation and management of fungible and non-fungible tokens, including configurable keys and supply controls.
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