Open data, On-chain trust

Continuously updated, research-grade crypto price history

Part of the FairOnChain project, Open Price brings together on-chain oracle and DEX pool observations into a unified, transparent archive. The dataset is standardized, reproducible, and fully aligned with the FAIR principles so researchers and builders can move from question to insight without friction.

Explore the GitHub repository Browse the datasets

FAIR by construction

🔍 Findable

Predictable file names, a README per asset and schema.org metadata that dataset search engines can index.

🌐 Accessible

Hosted through open HTTPS endpoints with zero authentication, enabling frictionless programmatic and human access.

🧩 Interoperable

Plain CSV files readable by any tool, UTC timestamps and a documented column reference for every file.

♻️ Reusable

Per-row provenance, open-source extraction scripts and a CC BY 4.0 license make every file reusable and verifiable.

Curated coverage across market primitives

Oracle feeds

Chainlink feeds for ETH, LINK, UNI, AAVE, COMP, USDC and USDT
Every price round with its phase, round id and update time
Historical backfill ready for statistical modeling

DEX liquidity pools

Uniswap & SushiSwap V2 and V3 swap events
Pool TVL, simulated slippage and quality flags at every swap
Supports market microstructure and slippage studies

30 datasets on Ethereum, updated daily: ETH LINK UNI AAVE COMP Stablecoins

Query prices directly

The OpenPrice API is an open-source service that reads these CSV files as they are, with no import step, and answers one question: what was the price of an asset at time T, and where does it come from?

Price at any timestamp, raw or as a volume-weighted median per minute, hour or day
Explicit source hierarchy: Uniswap V3 pools first, then Uniswap V2 and SushiSwap, with Chainlink as a fallback
A confidence score and the full provenance of every price
No invented values: the price is null when no reliable source exists

The Open Price Explorer queries the API from your browser, with nothing to install: pick a token, a date and a granularity, and get the price with its confidence score and full provenance. It needs an API key: test keys are available on request through the contact form.

Open the Explorer ↗ Explore the API repository

GET /v3/prices/LINK/at
    ?timestamp=2024-01-01T00:00:00Z
    &granularity=hour

Supported assets: ETH, LINK, UNI, AAVE and COMP. Try it online with the Explorer, or self-host the API: clone the repository, point it at the downloaded CSV files and start it.

Designed for reproducible research

Market microstructure & DeFi research

Study price formation, liquidity and slippage on the complete swap and oracle history, using the quality flags to set aside unrepresentative trades.

Historical price verification

Establish the price of an asset at a given time and trace it back on-chain: the block and transaction of each swap, the round and aggregator contract of each oracle update.

Replication & peer review

The open extraction scripts and the per-row provenance (run id, script hash, node, block) let other researchers re-run an extraction and compare it with the published file.