About Quantascan
Why Quantascan exists
Quantascan is an analytics-first explorer and public API for the Quantum Resistant Ledger. It indexes the network end to end — every block, transaction, address and validator — and turns that raw data into aggregated insight: rich lists, supply curves, validator performance, token distribution and cross-chain timeseries, all pre-computed so they load in milliseconds instead of grinding through the chain on every request. It's the data layer the network was missing — not just a place to look up a single transaction, but the numbers behind the whole chain, plus a REST API to build on top of them.
That depth matters most right now, because QRL is mid-transition — from the original Proof-of-Work chain to the EVM-compatible QRL 2.0 Proof-of-Stake network — and following a move like that takes more than a single-transaction lookup: you need to see where supply is going, who is staking and how the two chains connect. Quantascan indexes both chains side by side in one unit, so the history stitches across the migration instead of breaking at it.
Everything on the site is derived from public chain data and traces back to a node, so every figure is verifiable and reproducible — auditable end to end, never a black box.
What sets Quantascan apart
Analytics-first
Not just blocks and transactions. Rich lists, supply curves, validator performance and cross-chain timeseries — pre-aggregated so they load in milliseconds, not minutes.
Dual-chain, one lens
The original QRL chain (PoW, XMSS) and QRL 2.0 (PoS, EVM) side by side in one unit — so the history stitches across the migration instead of breaking at it.
Verifiable & reproducible
Every figure is derived from public chain data and traces back to a node — auditable and reproducible, not a black box.
Build on QRL data
Every page on this site is a thin frontend over a REST API — the same endpoints that power the explorer are available for your app, bot, dashboard or research. Because indexed, query-ready QRL 2.0 data is hard to get anywhere else, the Quantascan API is the fastest way to ship on QRL without standing up your own node and indexer. Access requires an account and a personal API key, and is rate-limited to prevent abuse.
# Authenticate with your personal API key (account required)
export QS_KEY="qs_your_key_here"
# Latest QRL 2.0 block
curl -s -H "Authorization: Bearer $QS_KEY" \
"https://quantascan.io/api/v1/qrl2/blocks/latest"
# Address balance + tx count
curl -s -H "Authorization: Bearer $QS_KEY" \
"https://quantascan.io/api/v1/qrl2/addresses/Q…"
# Cross-chain daily supply timeline (stitched QRL → QRL 2.0)
curl -s -H "Authorization: Bearer $QS_KEY" \
"https://quantascan.io/api/v1/analytics/timeline/supply?days=365"The API requires an account and a personal API key, and is rate-limited to keep the service fair, with a 1,000 calls/day allowance plus usage metering, watchlists and alerts.
What people build with it
Balances, full transaction history and token holdings for any address — without running your own node or indexer.
Poll latest blocks, watch the mempool, or subscribe to the live WebSocket feed and react to on-chain events in real time.
Daily timeseries — supply, fees, active addresses, validator economics — back to genesis, stitched across both chains.
Beacon-chain blocks, validator registry, rewards and penalties for monitoring stake health and uptime.
Watch an address, a validator or a price level and get notified — built on the same data the site renders.
Decoded transfers, address labels and counterparty data for accounting tools and on-chain investigations.
What you can explore
- Search by tx hash, block height, address or token from any page.
- Browse blocks, transactions and the mempool.
- Per-address balance, history, top counterparties and transfer graph.
- Tokens, NFTs and smart contracts.
- Validators, rewards and beacon-chain health.
- Rich list, supply and whale activity.
- Cross-chain charts — fees, gas, block-time variance, network TPS.
- Per-token holder distribution (Gini / HHI) and top holders.
Two chains, explained
QRL 2.0
Proof-of-Stake · EVM-compatible
The current chain: smart contracts on the ZVM, validators securing the network via the qrysm beacon chain, and ML-DSA-87 post-quantum signatures. This is where the analytics depth lives.
QRL (PoW)
Proof-of-Work · XMSS
Quantum-resistant since its 2018 genesis — one of the very few blockchains secure against quantum attacks from day one, using XMSS hash-based signatures. It is not deprecated or insecure tech: it stays a fully browsable, permanent archive whose history never disappears, stitched into the QRL 2.0 timeline across the migration.
Both chains are post-quantum secure — XMSS on the PoW chain, ML-DSA-87 on QRL 2.0. The migration adds smart contracts, staking and throughput; it doesn't replace weak cryptography.
New to any of this? The Learn library covers what QRL is, why quantum-resistance matters, how Proof-of-Stake works and how to read a block explorer.
Built for the QRL community
Quantascan is built for the QRL community. Because every figure is derived from public chain data, the numbers are verifiable end to end — traceable back to a node, not a black box. Found something that looks off? Let us know with the page URL via the feedback link in the footer and we'll track it down.
For the broader QRL ecosystem — foundation, wallets, tooling and community projects — see the ecosystem page. To buy QRL or find a trading venue, see exchanges.
FAQ about QuantaScan
Common questions about this page
- What is Quantascan?
- Quantascan is an analytics-first block explorer for the Quantum Resistant Ledger. It covers both chains side by side: the original QRL chain (post-quantum Proof-of-Work, XMSS signatures) and QRL 2.0 (its EVM-compatible Proof-of-Stake successor, ML-DSA-87 signatures). Beyond raw blocks and transactions it focuses on aggregated insight — rich lists, supply, validator performance, token distribution and cross-chain timeseries.
- Is the data real-time?
- Effectively yes. Both chains are indexed continuously, and live feeds (latest blocks, transactions, pending pool) refresh every few seconds. Heavier analytics pages are pre-aggregated, so they update on a short delay rather than per block — the trade-off that keeps queries sub-second.
- Can I use Quantascan data in my own app?
- Yes. Every page here is a thin frontend over a REST API — the same endpoints power the site. Access requires an account and a personal API key, and is rate-limited to prevent abuse. The current tier includes a 1,000 calls/day allowance plus usage metering, watchlists and alerts.
- How do I start building with the API?
- Create an account, generate a personal API key, and send it as a Bearer token — for example: curl -H "Authorization: Bearer qs_…" https://quantascan.io/api/v1/qrl2/blocks/latest returns the newest QRL 2.0 block as JSON. Chain-specific data lives under /api/v1/qrl2/... and /api/v1/qrl/...; cross-chain analytics live at /api/v1/analytics/.... The full endpoint reference, conventions and rate limits are on the API documentation page, and a live WebSocket feed pushes new-block events for real-time apps.
- Can I trust the numbers?
- Every figure is derived from public chain data, so the numbers are verifiable end to end: traceable back to a node and reproducible, not a black box.
- I found something wrong — how do I report it?
- Use the feedback link in the site footer and include the page URL and what looked off. Data-accuracy reports are especially welcome — a concrete example is usually enough for us to track it down.