Data Coverage by Chain

How far back Nansen data goes on each chain, and how fresh live data is.

This page is the single source of truth for how far back Nansen indexes each chain and how fresh live data is. Individual endpoint pages link here for historical coverage; any endpoint that applies its own stricter limit says so on its own page.

Data freshness

• Live data (queries whose date range includes today): underlying on-chain activity is indexed in near real time — typically reflected within seconds to a couple of minutes. Some endpoints additionally serve current-day responses from a short cache (up to 5 minutes) to protect performance.

• Historical data (fully past date ranges): stable — once a window has settled (a couple of days after it closes), the underlying transfer and historical-price facts no longer change. Results may still be revised for late-arriving/backfilled on-chain data, data-quality corrections, and attribution/label updates (labels are always evaluated against Nansen's current dictionaries). Recently-closed windows are served fresh (not from the long cache) until they settle.

Historical coverage

Each chain is indexed from its genesis (or Nansen's onboarding point for that chain) forward. Earliest available data:

Chain	Data available from
Ethereum	30 Jul 2015
Tron	25 Jun 2018
TON	15 Nov 2019
Solana	17 Mar 2020
Polygon	30 May 2020
NEAR	21 Jul 2020
BNB Chain (BSC)	29 Aug 2020
Avalanche	23 Sep 2020
Ronin	25 Jan 2021
Arbitrum	29 May 2021
Injective	30 Jun 2021
Optimism	11 Nov 2021
Starknet	04 Apr 2022
Chiliz	08 Feb 2023
Sui	12 Apr 2023
Base	15 Jun 2023
Mantle	02 Jul 2023
Linea	06 Jul 2023
Scroll	10 Oct 2023
IOTA EVM	15 Mar 2024
Sei	27 May 2024
Mantra	17 Oct 2024
Sonic	01 Dec 2024
HyperEVM	18 Feb 2025
Katana	08 May 2025
Monad	14 May 2025
Somnia	22 May 2025
Plasma	03 Sep 2025
Citrea	25 Nov 2025
Robinhood	30 Apr 2026

Chains that onboarded before mid-2023 (Ethereum through Linea above) offer 3+ years of history; newer chains offer proportionally less.

Hyperliquid perpetuals (e.g. the perp PnL leaderboard) are a separate dataset from the chains above, with reliable data from May 2025 onward.

Prediction markets (Polymarket) are a separate dataset from the chains above. Trade, price, and PnL history is available from November 2022 onward, and updates live (within the standard latency).

How this maps to endpoints

For most endpoints, coverage for a given chain equals the start date above. An endpoint returns data as far back as the chain allows, bounded only by your requested date range. Where an endpoint enforces its own limit (for example, a reduced max date range per request for a few extremely high-volume addresses), that limit is documented on the endpoint's own page.