KnownOrigin set out to answer a single question: can blockchain mint digitally public artwork with proof of ownership, provenance, and authenticity? What began as an experiment in Manchester grew into one of the most respected artist-led NFT marketplaces on Ethereum—then into a strategic acquisition by eBay at the height of mainstream curiosity about digital collectibles.

By the numbers (from KnownOrigin’s own story)

KnownOrigin’s timeline on knownorigin.io frames the arc in concrete beats:

• 2018 — The launch — A pop-up in a Manchester basement: 10 artists, 25 physical artworks, QR codes, and a basic wallet flow so attendees could buy the digital piece and claim the NFT alongside the physical work.
• 2019–2020 — Digital-first — The team scaled toward a digital-first art marketplace, at a time when, in their words, the people buying crypto-art “could fit on a school bus.”
• 2021 — The boom — “NFT” became Collins’ word of the year; KnownOrigin saw a huge influx of creators and collectors, with early editions that had struggled to sell later treated as relics of crypto-art history.
• 2022 — Growth and consolidation — Features such as early-access sales, embedded NFTs, and creator contracts kept the community experimenting; the same year, eBay acquired KnownOrigin (see below).
• 2018–2024 — A six-year chapter — KnownOrigin later sunset the active marketplace while stressing that NFTs minted from KODA contracts remain on-chain and safe, with inventory discoverable on third-party marketplaces and four KODA contract generations (V1–V4) documented for collectors and developers.

Those figures underline something easy to forget in hindsight: this was years of shipping before “NFT” was household vocabulary—and long before enterprise buyers treated digital collectibles as strategic.

Exit to eBay (2022)

On 22 June 2022, eBay announced it had acquired KnownOrigin—combining eBay’s global reach with KnownOrigin’s marketplace technology for creators and collectors. The companies noted the deal had signed and closed on 21 June 2022.

eBay framed the move as part of a tech-led reimagination of collectibles, building on earlier steps such as enabling NFT buying and selling on eBay from May 2021. KnownOrigin’s team highlighted the chance to bring authenticated digital items to a much larger audience—exactly the kind of “bridge” moment early Web3 products rarely get.

For teams building in the space, that exit is a useful datapoint: standards-based marketplaces with strong creator communities were not a sideshow—they were acquisition-grade infrastructure.

What we focused on technically

From an engineering perspective, the work sat where product meets protocol:

• ERC-aligned contracts and metadata so wallets, explorers, and aggregators could reason about editions consistently.
• Durability — pairing on-chain identifiers with content addressing and operational discipline so artworks remained legible as tooling evolved.
• Creator workflows — reducing friction so artists could publish without becoming full-time protocol operators.

What still holds

Whether you are designing a drop, a loyalty play, or enterprise collectibles, the lesson from KnownOrigin’s run is the same: decide what the ledger is authoritative for, ship credible neutrality where it matters, and treat distribution (whether your own site or a partner the scale of eBay) as part of the product—not an afterthought.

For the full corporate narrative around the transaction, read eBay’s press release: eBay acquires leading NFT marketplace, KnownOrigin. For KnownOrigin’s own retrospective, timelines, and FAQ (contracts, preservation, and third-party marketplaces), see knownorigin.io.