{
  "url": "https://blockindex.ai/coin/qtum",
  "name": "Qtum",
  "links": {
    "github": "https://github.com/qtumproject",
    "website": "https://qtum.org/",
    "whitepaper": null
  },
  "dScore": 53,
  "market": {
    "priceUsd": 0.7217784192567814,
    "marketCapUsd": 76543345.46773216,
    "volume24hUsd": 9496394.948521,
    "priceChange7dPct": 1.72823744,
    "priceChange24hPct": -2.31674972
  },
  "source": "BlockIndex.AI",
  "supply": {
    "max": 107822406,
    "circulating": 106048260,
    "circulatingPct": 98.35456648964038
  },
  "ticker": "QTUM",
  "founder": "Patrick Dai, Neil Mahi, Jordan Earls",
  "vcFunded": true,
  "updatedAt": "2026-06-19T06:00:32.482729+00:00",
  "fairLaunch": false,
  "launchYear": 2017,
  "description": "Qtum is a hybrid Layer‑1 blockchain that combines Bitcoin’s UTXO accounting model with the Ethereum Virtual Machine (EVM) to enable smart contracts and decentralized applications while preserving UTXO-derived security properties. Announced in March 2016, Qtum raised funds via an ICO in March 2017 and launched its mainnet on September 13, 2017. The project was conceived to offer developers the expressiveness of the EVM and the tooling compatibility of Bitcoin, bridged by an Account Abstraction Layer (AAL). Qtum’s architecture and governance choices—most notably the Decentralized Governance Protocol (DGP)—were designed to enable on‑chain modification of certain network parameters (for example block size and gas fees) without resorting to contentious hard forks. The Qtum Chain Foundation (a Singapore‑registered foundation) has played an ongoing role in ecosystem coordination and staged distribution of reserved supply.\n\nTechnically Qtum stands out as an engineered hybrid: it preserves a UTXO ledger for basic value transfer and security semantics, and layers an EVM-compatible execution environment for smart contracts. The consensus mechanism is a modified Proof‑of‑Stake (MPoS / mutualized PoS) that secures the chain while enabling staking rewards for validators. The codebase and node software have periodically adopted upstream Bitcoin Core improvements (noted by the project’s Bitcoin Core base upgrades) combined with EVM patches and EVM upgrade support (Pectra / Dencun references in recent releases). Qtum supports token standards (QRC‑20 and qBRC‑20) and NFT capabilities on its EVM layer, and has maintained multiple major client releases (notably v27.1 and v29.1 in the source material).\n\nFrom a tokenomics and economic perspective, Qtum issued an initial supply of 100,000,000 QTUM at genesis; the project’s stated maximum supply is approximately 107,822,406 QTUM and circulating supply snapshots are ~105.9M QTUM across the sources provided. The ICO raised roughly $15M and public allocations were significant (the whitepaper and project breakdown describe ~51M sold in the ICO and remaining allocations to investors, team and the Foundation). The distribution and foundation allocations are a core governance consideration and are reflected in subsequent community discussion and vesting schedules. Monetary policy historically included block rewards (initially 4 QTUM per block) and scheduled reductions designed to manage long‑term issuance; staking yields and inflation dynamics vary by epoch and observed ROI is modest (2.2% range in snapshots provided).\n\nQtum’s ecosystem presence includes listings on multiple major centralized exchanges, coverage in CoinMarketCap / CoinGecko / Messari analytics platforms, and support by hardware wallet vendors (Ledger). The project has delivered a sustained mainnet since 2017 and a sequence of upgrades and milestones through 2025, including a February 15, 2025 protocol upgrade (Bitcoin Core base + EVM changes) and scheduled hard forks for v29.1. Governance is hybrid: the DGP enables on‑chain parameter changes while the Foundation and project teams coordinate development and ecosystem funding. Looking forward, the project focuses on maintaining EVM compatibility, improving developer tooling around account abstraction, and expanding dApp and token use cases while encouraging staking participation and on‑chain governance engagement.",
  "methodology": "https://blockindex.ai/dscore",
  "classification": {
    "layer": "Layer 1",
    "isToken": false,
    "consensus": "PoS",
    "parentChain": null
  },
  "dScoreComponents": {
    "autonomy": 5,
    "ageHistory": 13,
    "governance": 15,
    "nodeDistribution": 20,
    "initialDistribution": 0
  },
  "decentralizationVerdict": "Moderately Decentralized"
}