/ Provenance Index / OpenSea

OpenSea

NFT Platform · Open Marketplace · Founded 2017
B-

Good (B-) — Provenance Grade

OpenSea is the largest open NFT marketplace by volume. Strong on cross-collection trading. Material 2022-2024 market-share loss to Blur + Magic Eden. Multiple operational restructuring rounds.

75
Composite / 100
/ Subscore Breakdown · 5 Dimensions

Where this grade comes from.

Authenticity / Due Diligence
C+
Pricing Transparency
A-
Artist Treatment
B-
Collector Service
B-
Liquidity / Resale Posture
B-
/ Key Events & Disclosures

Timeline & positioning.

  • Founded 2017
  • Largest NFT marketplace by volume
  • Market-share loss to Blur 2022+
  • Multiple restructuring rounds

/ Best for

Cross-collection NFT trading; open-marketplace browsing.

/ Watch out for

Open marketplace means authentication challenges. Verify collection legitimacy before purchase. Market-share decline ongoing.