Keyban
Blockchain-powered API for Digital Product Passport, Loyalty Programs, and Stablecoin Payments.
Website: https://www.keyban.io/
Cover Block
PUBLIC
| Field | Value |
|---|---|
| Name | Keyban |
| Tagline | Blockchain-powered API for Digital Product Passport, Loyalty Programs, and Stablecoin Payments |
| Headquarters | 131 boulevard Pereire, 75017 Paris, France |
| Founded | 2022 |
| Stage | Seed |
| Business Model | SaaS (API / SDK infrastructure) |
| Industry | E-commerce / Retail |
| Technology | Blockchain / Web3 |
| Geography | Western Europe |
| Growth Profile | Venture Scale |
| Founding Team | Co-Founders (3+) |
| Funding Label | Pre-Seed €500,000 |
Links
PUBLIC
- Website: https://www.keyban.io/
- Documentation: https://docs.keyban.io/
- LinkedIn (CTO profile, company page not separately confirmed): https://www.linkedin.com/in/keibrousmiche/
- GitHub: https://github.com/keyban-io
- Crunchbase: https://www.crunchbase.com/organization/keyban
Executive Summary
PUBLIC
Keyban is a Paris-based infrastructure startup selling a blockchain API and SDK that lets retail and commerce brands embed wallets, Digital Product Passports (DPP), on-chain loyalty, and stablecoin payments without hiring blockchain engineers [Keyban]. The company was founded in 2022 by a group of operators and researchers led by CEO Charles Kremer, with CTO Kei Brousmiche (Ph.D. in artificial intelligence, active in blockchain research since 2016) and COO Nenad Cetkovic, formerly COO of e-commerce feed manager Lengow [TechCrunch, 2015] [LinkedIn]. The core product is a tokenization layer that abstracts wallet provisioning, NFT minting, and multi-chain interoperability behind a React and JavaScript SDK, positioning Keyban as middleware between brand IT stacks and underlying public chains [Keyban docs]. Commercially, the firm has anchored its early go-to-market around the EU Digital Product Passport regulation by partnering with Weavenn, the joint venture of Fnac Darty and CEVA Logistics, on a Tokenized Product Passport platform targeted for launch by Q3 2025 [Supply Chain Magazine, 2025] [Ecommerce Mag]. Funding to date is reported as a Pre-Seed of approximately €500,000, with a further pre-seed event noted in March 2026 [AccessNewswire, 2026]. Over the next twelve to eighteen months, the questions worth tracking are whether the Weavenn TPP launch converts into multi-brand deployment, whether enforcement timelines for the EU's DPP framework hold, and whether Keyban can sign a second anchor logistics or marketplace partner of comparable weight.
Data Accuracy: GREEN -- Confirmed across Keyban primary documentation, Crunchbase, Supply Chain Magazine, and TechCrunch.
Taxonomy Snapshot
| Axis | Value |
|---|---|
| Stage | Seed (Pre-Seed €500k disclosed) |
| Business Model | SaaS / API infrastructure |
| Industry / Vertical | E-commerce, Retail, Logistics |
| Technology Type | Blockchain / Web3 tokenization |
| Geography | France, Western Europe |
| Growth Profile | Venture Scale |
| Founding Team | Co-Founders (6 named) |
| Funding | Pre-Seed €500,000 |
Company Overview
PUBLIC
Keyban was incorporated in September 2022 and is headquartered at 131 boulevard Pereire in the 17th arrondissement of Paris [My French Startup]. The company was assembled around a thesis that the next regulatory and consumer wave in European retail, the Digital Product Passport, would require commerce brands to issue, store, and transfer cryptographically anchored product records at a scale that conventional database vendors are not built to serve. Rather than ship a vertical DPP application, the founders chose to build the underlying tokenization layer and distribute it as an API and SDK, leaving the user-facing experience to brands, marketplaces, and integrators [Keyban docs] [Frenchweb].
The founding group is unusually large for a pre-seed company: Charles Kremer (CEO), Kei Brousmiche (CTO), Nenad Cetkovic (COO), Sébastien Dolard (Chief Product Officer), Maxime Vanmeerbeck (Software Lead), and Leo Brousmiche are all listed as co-founders or founding team members [Prospeo] [LinkedIn] [My French Startup]. Kremer's prior path runs through Eniblock, IRT SystemX, and Thales Avionics, giving the company a research-and-defense engineering pedigree alongside more conventional commerce experience [RocketReach]. Cetkovic's tenure as COO of Lengow, a French e-commerce feed management company that raised a €10M Series B in 2015, supplies the operational link to retail and marketplace customers [TechCrunch, 2015].
The most consequential public milestone to date is the announcement of a partnership with Weavenn, the joint venture between Fnac Darty and CEVA Logistics, to co-develop a Tokenized Product Passport platform combining logistics, marketplace, and blockchain layers, with a launch reported for Q3 2025 [Supply Chain Magazine, 2025] [Ecommerce Mag]. A further pre-seed funding event was reported in March 2026, with terms undisclosed [AccessNewswire, 2026].
Data Accuracy: GREEN -- Triangulated across My French Startup, Prospeo, Supply Chain Magazine, and TechCrunch.
Product and Technology
MIXED
Keyban's product is positioned as "the tokenization layer that lets you embed wallets, digital product passports, and on-chain loyalty, no blockchain expertise needed" [Keyban docs] [PUBLIC]. Architecturally, the offering is split into an Embedded Wallet SDK that handles key management and account abstraction, a JavaScript SDK (@keyban/sdk-base) that exposes account, transaction, balance, and NFT primitives, and a React SDK that wraps those primitives in hooks and components for front-end integration [Keyban docs] [PUBLIC]. A backend OpenAPI surface complements the client SDKs for server-to-server integration [Keyban docs] [PUBLIC]. The company also publishes eleven repositories under its GitHub organization, consistent with an SDK-and-infrastructure posture rather than a closed SaaS application [GitHub] [PUBLIC].
Three solution areas are documented today. The first is Digital Product Passport issuance, where each physical good is bound to a tokenized record that can travel with the product through resale and ownership transfer [Keyban docs] [Frenchweb]. The second is on-chain loyalty, where brand-defined actions, including reviews and resales, can trigger immutable rewards recorded on chain [Keyban docs]. The third, more recently surfaced on the homepage, is stablecoin payments, positioned alongside DPP and loyalty as a third pillar of the API [Keyban]. Interoperability is a stated design choice: the documentation describes compatibility with multiple blockchain networks rather than a single-chain bet [Keyban docs] [PUBLIC].
The Weavenn collaboration is the clearest external validation of the technology stack: it pairs Keyban's tokenization layer with CEVA's logistics data and Fnac Darty's marketplace surface, with second-hand sales activation cited as an early use case [IMT Starter] [Supply Chain Magazine, 2025] [PUBLIC]. Independent revenue, customer count, and transaction volume metrics for the platform are not publicly disclosed, so technical maturity is currently inferable only from documentation depth, SDK release cadence in the GitHub organization, and the named partnership.
Data Accuracy: GREEN -- Confirmed via Keyban primary documentation, GitHub, Supply Chain Magazine, and Ecommerce Mag.
Market Research and Opportunity
PUBLIC
The market matters now because the European Union's Ecodesign for Sustainable Products Regulation (ESPR) makes Digital Product Passports a phased legal requirement for a widening set of product categories beginning in the second half of the decade, forcing brands and marketplaces to choose an issuance and storage stack within a defined compliance window [Keyban blog] [Frenchweb].
Keyban operates at the intersection of three adjacent markets: product traceability and DPP issuance, customer loyalty software, and stablecoin payment rails. Specific TAM, SAM, and SOM figures from named third-party reports are not present in the captured research, so this report does not assert sizing numbers it cannot cite. Qualitatively, the demand drivers visible in the cited material are regulatory (ESPR / DPP), commercial (the resale and circular-economy push at retailers like Fnac Darty), and infrastructural (logistics providers such as CEVA seeking richer item-level data) [Supply Chain Magazine, 2025] [IMT Starter].
| Cited claim | Source |
|---|---|
| Digital Product Passport described as poised to reshape retail and commerce sectors from 2026 | [Keyban blog] |
| Weavenn TPP platform planned launch by Q3 2025 | [Supply Chain Magazine, 2025] |
| Keyban solution responds to new regulatory requirements on personal data management | [Frenchweb] |
Analyst takeaway: the cited evidence frames a regulation-led adoption curve rather than a discretionary technology purchase, which is the more durable of the two demand profiles for an infrastructure vendor. The risk is timing: if national transposition of ESPR slips, the buying urgency that underwrites Keyban's near-term pipeline softens correspondingly.
Adjacent and substitute markets are worth naming. On the DPP issuance side, traditional product information management (PIM) and master data management vendors can extend their schemas to satisfy the lightest interpretation of the regulation without using a blockchain. On the loyalty side, established CRM and loyalty suites already own the brand relationship and can bolt on tokenized rewards as a feature. On the stablecoin payments side, regulated PSPs operating under the EU's MiCA framework are the natural incumbents. Keyban's defensibility in each of these adjacencies depends on whether tokenized provenance, immutable reward histories, and on-chain settlement become buyer-mandated rather than nice-to-have characteristics.
Data Accuracy: YELLOW -- Regulatory and partnership context is well sourced; quantitative market sizing was not present in captured research and has been intentionally omitted rather than estimated.
Competitive Landscape
MIXED
Keyban is positioned as a horizontal tokenization API for commerce, sitting one layer below the brand-facing applications that buyers will eventually choose for DPP, loyalty, and resale, and one layer above the public chains it abstracts.
The competitive map breaks into three segments. First, dedicated DPP and traceability platforms targeting European brands directly with end-to-end applications: this group bundles UI, data model, and chain anchoring, and it competes with Keyban for the brand budget line even though Keyban could in principle power some of them. Second, general-purpose Web3 wallet-as-a-service and tokenization infrastructure providers that serve broader Web3 use cases and could extend down-market into commerce. Third, the incumbent PIM, CRM, loyalty, and PSP vendors already embedded in retailer IT stacks, who are the most likely substitutes if buyers conclude that a non-blockchain implementation is sufficient for compliance.
Where Keyban appears defensible today is in the combination of a France- and EU-native go-to-market, a CTO with a research record in blockchain since 2016 [LinkedIn] [Google Scholar], and an anchor partnership with a Fnac Darty / CEVA joint venture that delivers both a marketplace surface and a logistics data spine [Supply Chain Magazine, 2025]. That partnership is the single largest distribution asset the company has disclosed: it shortens the path to brand pilots that would otherwise require a multi-quarter enterprise sales cycle. The edge is real but perishable: the Weavenn relationship is, on the public record, non-exclusive in the captured sources, and a competing infrastructure vendor that signs a comparable retailer-plus-3PL alliance would erode the differentiator quickly.
Where Keyban is most exposed is on enterprise sales motion at the top of the retail market. Wallet-as-a-service incumbents with larger balance sheets can also outspend on developer relations and chain partnerships.
The most plausible eighteen-month scenario: Keyban becomes a winner if the Weavenn TPP platform ships on schedule, signs at least three brand customers visible by name, and Keyban converts that proof point into a second anchor partnership with another European retailer or logistics group. Keyban becomes a loser if ESPR enforcement slips by twelve months and a wallet-as-a-service incumbent funds a France-focused commerce push during that window.
Data Accuracy: YELLOW -- Positioning is supported by Keyban documentation and Supply Chain Magazine; competitor identities were not present in captured research and have been described categorically rather than named.
Opportunity
PUBLIC
If Keyban executes, the prize is to become the default European tokenization layer underneath the Digital Product Passport, brand loyalty, and stablecoin payments stacks, a position analogous to what payment infrastructure vendors occupied at the start of the prior e-commerce cycle.
The headline opportunity. The single largest outcome the cited evidence makes reachable is for Keyban to be the embedded blockchain API that European retailers, marketplaces, and logistics providers standardize on as ESPR-driven DPP issuance moves from pilot to mandatory rollout. The Weavenn partnership with Fnac Darty and CEVA Logistics is the credible foundation for that ambition because it pairs Keyban with two of the most visible names in French retail and contract logistics, and it does so on a use case (tokenized product passports for resale and traceability) that matches the regulation's direction of travel [Supply Chain Magazine, 2025] [Ecommerce Mag]. That makes the outcome reachable rather than aspirational, even if the path between a single anchor partnership and category default remains long.
Growth scenarios.
| Scenario | What happens | Catalyst | Why it's plausible |
|---|---|---|---|
| TPP standard for French retail | Weavenn TPP platform launches and is adopted by additional Fnac Darty categories and third-party brands on the marketplace | Q3 2025 launch executed on schedule [Supply Chain Magazine, 2025] | Fnac Darty's category breadth and CEVA's logistics footprint create a natural multi-brand surface |
| Embedded loyalty API for EU commerce | On-chain loyalty SDK is adopted by mid-market brands seeking tokenized rewards and resale-linked points | Documented React and JS SDK shipping today [Keyban docs] | Loyalty is already a budgeted line item; Keyban competes as a feature add rather than a new category buy |
| Tokenization rail for stablecoin commerce | Stablecoin payments pillar matures alongside MiCA-regulated issuers and merchant adoption | Stablecoin payments listed as a homepage pillar [Keyban] | Regulatory clarity in the EU on stablecoins is the most concrete adoption catalyst the category has seen |
What compounding looks like. The flywheel that turns one win into the next is data and standards. Each tokenized product passport issued through Keyban creates a record that follows the item across resales, repairs, and ownership transfers, accruing a transaction history that the brand cannot easily migrate to a competing infrastructure without orphaning provenance. As more brands sit on top of the same SDK, the schema and identifier conventions become the default that integrators learn to build against, and the wallet primitives that underpin DPP can be reused for loyalty and stablecoin payments without a second integration. The Weavenn arrangement supplies the early evidence that this compounding is starting at the partnership layer: a single integration with a logistics-plus-marketplace JV reaches more brands than a brand-by-brand sales motion would [Supply Chain Magazine, 2025].
The size of the win. A directly comparable public valuation benchmark is not present in the captured research, so this report does not assert one. Qualitatively, infrastructure vendors that become the default API for a regulated commerce layer have historically commanded valuation multiples meaningfully above application-layer peers, because their revenue rides every transaction that flows through the brands above them. If the TPP standard scenario plays out and Keyban's API sits beneath a meaningful share of EU-issued passports by the end of the decade, the company would plausibly graduate into the category of European Web3 infrastructure vendors valued in the high nine to low ten figures (scenario, not a forecast). The counterweight risks to that scenario are addressed in the private half of this report.
Data Accuracy: YELLOW -- Scenarios are anchored in confirmed product, partnership, and regulatory facts; valuation framing is explicitly labelled scenario rather than forecast.
Sources
PUBLIC
[Keyban] Keyban homepage, Commerce Agentique, Digital Product Passport | https://www.keyban.io/
[Keyban docs] Introduction | https://docs.keyban.io/
[Keyban docs] Keyban React SDK | https://docs.keyban.io/api/sdk-react/
[Keyban docs] On-Chain Loyalty | https://docs.keyban.io/solutions/on-chain-loyalty/introduction/
[Keyban docs] Supported Blockchains | https://docs.keyban.io/roadmap-and-references/supported-blockchains/
[Keyban docs] Roadmap | https://docs.keyban.io/roadmap-and-references/roadmap/
[Keyban docs] Embedded Wallet SDK Introduction | https://docs.keyban.io/products/embedded-wallet/introduction/
[Keyban blog] Get ready for 2026: the Digital Product Passport | https://www.keyban.io/blog
[Keyban blog] Keyban and Weavenn join forces on tokenized DPP | https://www.keyban.io/blog/posts/keyban-and-weavenn-join-forces-to-rework-retail-and-logistics-with-tokenized-digital-product-passport-tpp
[Frenchweb] Connaissez vous KEYBAN, et sa solution de gestion de passeports digitaux de produits? | https://www.frenchweb.fr/connaissez-vous-keyban-et-sa-solution-de-gestion-de-passeports-digitaux-de-produits/448124
[GitHub] keyban-io organization | https://github.com/keyban-io
[Prospeo] Keyban Overview, Address & Contact | https://prospeo.io/c/keyban
[My French Startup] Startup KEYBAN, La technologie Web3 pour les entreprises réelles | https://www.myfrenchstartup.com/fr/startup-france/349050/keyban
[Crunchbase] Keyban Company Profile & Funding | https://www.crunchbase.com/organization/keyban
[Crunchbase] Keyban Financial Details | https://www.crunchbase.com/organization/keyban/financial_details
[TechCrunch, September 2015] E-Commerce Feed Management Company Lengow Secures €10M Series B | https://techcrunch.com/2015/09/01/lengow/
[LinkedIn] Sebastien Dolard, Keyban | https://www.linkedin.com/in/sebastien-dolard/
[LinkedIn] Kei Brousmiche, CTO Keyban | https://www.linkedin.com/in/keibrousmiche/
[Les Samouraïs du Business] Episode 725, Charles Kremer, CEO de Keyban | https://open.spotify.com/episode/0WG0Em8OYupocd0ZuxpHAj
[Supply Chain Magazine, 2025] Weavenn and Keyban tokenized product passport platform coverage (referenced in captured research)
[Ecommerce Mag] Keyban and Weavenn TPP partnership coverage (referenced in captured research)
[AccessNewswire, 2026] Pre-Seed funding event coverage (referenced in captured research)
Articles about Keyban
- Keyban Is Putting a Digital Product Passport on Every Fnac Darty Resale — The Paris startup is racing to ship a tokenized passport platform with Weavenn before EU rules land in 2026.