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Polkadot

Polkadot

Substrate Layer 0

Polkadot is a heterogeneous multi-chain protocol enabling cross-chain transfers and shared security across specialized blockchains.

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Quick Facts
Networks 1
Runtime Substrate
Real-time No
Data tables 0
Category Layer 0
Networks
1
Runtime
Substrate
Coverage
Archive
Start block
0 (genesis)
License
Open-source SDK

Networks

polkadot
Substrate mainnet 0 tables

Polkadot on SQD

Validated at ingestion

Polkadot data is validated by SQD Network workers before it reaches the Portal. Validation is performed across the network rather than by a single ingestion node, so a faulty upstream source can't poison the dataset.

Decoded, schema-typed

Polkadot data served as decoded, schema-typed tables, ready to query. Your indexer queries the data directly without writing SCALE parsers.

Full historical archive

SQD's Polkadot archive covers historical state in one endpoint. Real-time on the roadmap.

Open-source SDK

Both the Squid SDK and the Pipes SDK are open-source. Connectors for Postgres, ClickHouse, MongoDB, SQLite and Parquet, plus a custom-target hook. Run your Polkadot indexer on your own infrastructure or on SQD Cloud.

Build with Polkadot data

Common production patterns teams build with SQD on Polkadot.

DeFi & Trading

Index swaps, liquidations, and positions on Polkadot in real time.

Analytics

Build dashboards and metrics from full Polkadot historical state.

AI Agents

Give agents structured, decoded Polkadot data with the MCP server.

Wallets & Payments

Power balance, transfer, and history views for Polkadot wallets.

Compliance & KYT

Validated Polkadot data for transaction monitoring and audits.

Stablecoins

Track every mint, burn, and transfer of Polkadot stablecoins.

Real-World Assets

Auditable Polkadot data for tokenized RWA issuance and transfers.

Teams using SQD on Polkadot

Production case studies from teams indexing Polkadot with SQD.

Polimec
DeFi / Compliance

Polimec

Compliant fundraising data indexed with native Substrate support

Hydration
DeFi

Hydration

Native Substrate indexing for cross-chain DeFi analytics

Stream Polkadot data in two lines

Example below uses the public Polkadot endpoint, no API key required for development. For full SDK reference, see the documentation.

1curl --compressed -X POST \
2 'https://portal.sqd.dev/datasets/polkadot/stream' \
3 -H 'Content-Type: application/json' \
4 -d '{
5 "type": "substrate",
6 "fromBlock": 0,
7 "toBlock": 100,
8 "fields": {
9 "block": {"number":true,"timestamp":true},
10 "event": {"name":true,"args":true}
11 },
12 "events": [{}]
13 }'
polkadot/stream
Substrate · blocks 0–100

Frequently asked questions

How does SQD compare to running a Polkadot RPC node?
A Polkadot RPC node serves raw bytes for recent state and rate-limits per request. SQD's Portal pre-indexes the full Polkadot archive into decoded, schema-typed tables (blocks, transactions, logs) and serves them as a single streaming endpoint. You skip the multi-day node sync, archive storage, monitoring, and scale-out work, and pay only for the data you stream.
What does SQD cost for Polkadot data?
The public Portal endpoint at portal.sqd.dev/datasets/polkadot is free for development with no API key. Production workloads run on the SQD Portal with tiered pricing based on the network and request volume. See the pricing page for current tiers, or contact us for an enterprise quote.
How is SQD's Polkadot data different from Subscan?
Block explorers are read-optimized for human browsing of single blocks or addresses. SQD is built for programmatic indexing: stream millions of Polkadot blocks into your own database, run analytical queries across the full history, and back production applications with decoded data. Output is structured tables, not HTML pages, and there are no per-call rate limits geared toward UI traffic. If you wanted to build your own Polkadot explorer, the SQD Portal is what you would back it with.
Can I self-host SQD's Polkadot indexer?
Yes. Both the Squid SDK and the Pipes SDK are open-source. You can run a Polkadot indexer on your own infrastructure pointing at the SQD Network or the Portal. SQD Cloud also offers managed hosting if you'd rather not operate it yourself.
Can I export Polkadot data to a data warehouse or pipeline?
Yes. The Pipes SDK streams Polkadot data from the Portal into Postgres, ClickHouse, MongoDB, SQLite, Parquet, or a custom target you implement. See the SDK docs for the connector reference.
Does SQD validate Polkadot data?
Every Polkadot block ingested into SQD is validated by the SQD Network workers (hash chain, parent reference, and where applicable finality) before it reaches the Portal. Validation is performed across the network, not by a single ingestion process, so a faulty upstream node can't poison the dataset.
Does SQD support real-time Polkadot data?
Polkadot historical data is available through the Portal archive. Real-time streaming for Polkadot is on the roadmap, contact us to flag your use case for prioritization.

See other chains supported by SQD

Kusama

Start building with Polkadot

Access Polkadot data through the SQD Portal, free tier available.

Try the Portal Read Docs