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NFT Marketplace · Web3 · 2022

CoinHaven

Designed the trust signals before designing a single marketplace feature.

Role

Product Design · Research

Year

2022

Outcome

54% → 82% minting completion

Read

12 min read

CoinHaven asked me, as sole UX designer, to take an NFT marketplace from zero to an investor-ready concept in six months. The four-person startup had an exchange MVP but no marketplace trust, brand equity or room to compete on catalogue size.

Research shifted the strategy from making crypto look effortless to making risk legible. I designed trust into the architecture—creator identity before inventory, chain choice before commitment and minting as a guided sequence—and delivered the prototype that became the centrepiece of the investor pitch.

My role and mandate

Sole UX Designer. I ran three weeks of community immersion, wrote and fielded the survey, ran the interviews and the competitive analysis, wrote the user stories, facilitated the prioritisation workshop that cut 40% of the feature list, designed the trust architecture and the full marketplace, and killed my own onboarding flow after testing. I argued the team out of copying the category leader.

Team

1 designer, 4-person startup team

Timeline

6 months to investor-ready

Tools

Figma, pen and paper, Discord and Telegram, Zoom

02

Three weeks in the rooms where creators warn each other

In 2022 the dominant platforms — OpenSea, Rarible, Magic Eden — were built for crypto natives. Small creators were priced out by Ethereum gas fees, overwhelmed by complexity, and exposed to constant scams. CoinHaven’s thesis was to build for the creators who wanted in and could not get started.

I did not start from personas. I went where creators were already talking — Twitter, Telegram, Discord — and spent three weeks embedded before running anything formal. Only then did I write the survey, and I recruited its 120 respondents from those same rooms rather than from a panel, so the sample was the target profile instead of whoever was available.

Immersion first, instruments second

Three weeks of listening before a single question was written, then a survey, interviews and a competitive teardown built on what the communities had already told me.

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What the survey was built to measure

Three things, deliberately: how often people actually engage with NFT platforms, which features they would trade for which, and how satisfied they are with what they already use. Engagement frequency first, because it separates a stated preference from a real habit.

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I went in expecting a usability problem. Three weeks of watching people warn each other about scams in real time is what reframed the brief entirely.

03

Fifteen interviews, and what people would not put in a survey

I filtered the 120 respondents down to 15 for semi-structured interviews over Zoom, scheduled across different times so I was not only hearing from one timezone or one kind of creator.

The survey gave me the shape of the problem. The interviews gave me the reason nobody had solved it, which was that the anxieties driving the market are not the ones people volunteer on a form.

  • Jane — a creator priced out

    “I love how easy it is to mint NFTs on some platforms, but the high transaction fees are a real problem for me. Lower fees would make the experience much better.”

  • Michael — a collector braced for loss

    “Security is my top priority. I’ve had a few scares with phishing attempts, so I need a platform that guarantees the safety of my digital assets and personal information.”

  • Kim — on what actually helped

    “A positive experience for me was when I found a platform with excellent customer support. They helped me through the minting process step-by-step, which was very reassuring.”

  • Emily — on why she stays

    “I enjoy platforms that offer a wide variety of high-quality NFTs. It keeps things interesting, and I feel like I’m always discovering something new and unique.”

The raw feedback, before it was tidied into anything

Four of the fifteen, quoted as said. Two named cost, one named security, one named support and one named variety — which looks like four different problems until you notice that three of the four are describing risk and only the last is describing desire.

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And what fifteen interviews collapsed into

The synthesis step: fifteen conversations reduced to three profiles — a first-time creator minting a debut piece, a seasoned artist expanding across chains, and a collector trying to buy something real. Three different jobs, and every one of them managing risk before pursuing a goal, which is not how any competitor was organised.

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Nobody tells you in a survey that they are afraid. They tell you in an interview, and then only obliquely, by describing the workaround.

04

Four numbers that set the brief

For many creators the incumbents were a double-edged sword: they were the giants, and they were not built for everyone. Gas fees on Ethereum made minting an expensive gamble, small creators could not get noticed among big names, and scams were constant.

But it was not only complaints. These creators had hopes — for something more affordable, more inclusive, more secure, with tools to build an audience before drop day. That was not a wish list. It was the design brief.

  • 60% — lack of visibility

    Small creators could not compete with established names on platforms that ranked by volume rather than by quality. Discovery was the barrier, not the tooling.

  • 75% — cost barriers

    Three quarters of respondents named high Ethereum gas fees as a significant challenge, which makes minting inaccessible to exactly the creators the product was for.

  • 65% — multi-chain needs

    Two thirds wanted support for alternatives like Solana and Polygon. This is the same problem as cost, expressed as a solution people had already worked out for themselves.

  • 55% — security concerns

    Scams were rampant and users wanted robust verification. More than half named it unprompted, which is high for a risk people are embarrassed to admit.

The journey, with the risk moments marked

Mapping where anxiety spikes rather than where clicks happen. The tense moments cluster before any value has been delivered, which is what made the onboarding decision later so consequential.

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The gap a four-person team could actually take

OpenSea, Rarible and Magic Eden mapped against creator pain rather than feature lists. None optimised for a first-time creator and none offered multichain minting — which is the only reason picking a fight with the category leader was defensible.

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In a market full of scams, the biggest design problem was not usability. It was credibility. Nobody tells you in a survey that they are afraid.

06

From findings to user stories, then to a cut list

I turned the research into user stories rather than features, because a story keeps the reason attached to the request. One insight sat above all of them: simplicity was non-negotiable. Creators were overwhelmed by the existing platforms, so the product had to feel obvious from the first click.

  • Then a workshop, scored rather than debated

    I facilitated an ideation session with the whole four-person team and scored every idea on user impact against technical feasibility. Scoring beat arguing: it meant a founder’s favourite and a designer’s favourite were compared on the same two axes, in public.

  • And a deliberate 40% cut

    Minting, creator verification, buying, selling and marketplace filters went into the first release. A referral system for creators, search enhancements and multi-wallet swap were sized as bigger bets. Advanced creator analytics and live chat went to the next iteration. Multichain support beyond the launch set and buzz-generation tooling were explicitly not now — the hardest column to hold, and the reason the other three shipped.

  • As a new creator, I want to easily mint my first NFT without worrying about high fees, so I can start selling my work.
  • As a buyer, I want to see verified creators and trustworthy listings, so I feel confident in my purchases.
  • As a returning creator, I want to track my sales and referrals in one place, so I can measure my success.

Impact against effort, with a Not Doing Now column

The output of the workshop. The quadrant that mattered most was the empty-looking one: naming what we were not doing, in front of the founders, is what stopped the list growing back. 40% of the initial features never made the first release.

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07

Trust as architecture, not as badges

I chose to design provenance, creator verification and community proof into every touchpoint before designing a single marketplace feature. Not as add-ons — as architecture.

The hardest conversation was about copying OpenSea. The team wanted to, on the reasonable logic that familiarity reduces learning cost. I argued the opposite: our users were not crypto natives, so familiarity with OpenSea was not an asset they had. I won that one with the research — 73% of our target users identified as creators rather than traders, and OpenSea is organised for trading.

So minting became a digital canvas rather than a transaction: upload, choose your chain, customise, preview, publish. Three screens, zero jargon, with chain choice early enough that the fee problem is solved in the interface instead of in a help article.

Minting as a sequence, not a transaction

The interaction model: upload, choose chain, customise, preview, publish. Framing it as making something rather than executing a trade is what let the jargon come out later without the flow collapsing.

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Chain choice, placed early on purpose

The fee problem solved in the interface rather than in documentation. Putting the chain decision before the creator has invested effort means the cost is known before the commitment, not after.

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Paper, then in-house, then eight real users

Wireframes let us test ideas without spending money or engineering time. We sketched, tested in-house, iterated, then tested with eight potential users pulled from the Discord communities I had spent three weeks in — including the verification flow, which was the whole trust thesis in its least glamorous form.

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In a category competing on spectacle, leading with evidence was the differentiated position — and the only one a four-person team could defend.

08

What shipped

Five areas carried the trust argument into the product. None of them is a badge bolted onto a finished marketplace; each is a rule about who gets seen, and what a buyer can check before spending.

  • A marketplace ranked on engagement, not spend

    Connect a wallet, browse, buy, or create. Creators are ranked on engagement metrics — volume, quality, activity — so a first-time creator can surface beside an established one. Filters cover price, category, blockchain and creator verification status, and trending items plus personalised recommendations do the discovery work. This is the 60% visibility finding, answered.

  • Minting as a guided sequence

    Step-by-step rather than one intimidating form. Upload audio, video or images; choose a chain — Ethereum, Solana or Polygon — to keep gas fees down; then set royalties, bidding, or a fixed price. This is the 75% cost and 65% multi-chain findings, answered together.

  • Verification that changes ranking

    Creator verification exists to attack the scam problem directly, and verified creators get priority ranking. That is the difference between trust as decoration and trust as architecture: it shows up as a sorting rule, not a tick.

  • Collections a buyer can assess

    A collection page gives a buyer the creator’s whole portfolio rather than one item in isolation: buy a whole collection, sort by price, popularity or type, follow the creator for future drops, share the profile.

  • Referrals that pay creators for creators

    Creators earn a percentage of the revenue generated by the creators they refer, with a dashboard tracking referrals, earnings and network performance. Growth routed through the people the market already trusted, rather than through paid acquisition a four-person team could not afford.

Entry — a route in, not a wall of listings

The homepage leads with what a creator can do — explore, or create — and puts top categories beside it. For a first-time visitor who arrived braced to be scammed, the first screen has to offer an action rather than an inventory.

Discovery — where ranking becomes the trust surface

Featured projects, then top collections over 1, 7 or 30 days. This is the screen the 60% visibility finding lives or dies on: a short window lets a new creator appear, a long one entrenches the incumbents, so the window is the user’s choice rather than ours.

The creator, judged before the item

Verification tick, socials, and the four numbers a buyer needs — total items, owners, volume, floor price. Assessing the body of work before the individual piece is the sequence collectors described in interviews, so the product follows it rather than fighting it.

The item, buyer’s view

Creator and collection are named above the price, provenance sits in Details, and only two actions compete: place a bid, or buy now. Everything a buyer would use to detect a fake is above the thing that takes their money.

The same item, owner’s view

Properties become editable traits, and token ID, contract address and standard are exposed in full rather than summarised. One layout, two roles: what changes is what you can act on, not where things are.

And the loop back out

Referral earnings, tracked. Creators earn a share of revenue from creators they refer — growth routed through the people the market already trusted, which is also the cheapest distribution available to a startup with no brand equity.

09

The vocabulary was the bug, not the flow

Before development, I tested the prototype with 15 users across the three segments. The point was to find out whether the thing was usable while changing it was still cheap.

Account setup was mostly easy. Listing for sale went smoothly for most, though some wanted clearer auction instructions. Browsing was well liked, with a consistent request for better filters. Purchasing was easy.

Minting was the problem — and not for the reason I expected. The flow was fine. The vocabulary was not. Blockchain terminology created friction at exactly the step where a first-time creator gives up.

  • And one result that reversed a decision of mine

    My first onboarding was an elaborate wizard — wallet setup, profile, preferences, community intro. Five screens before a user could do anything, and 60% drop-off by screen three. In a market where people arrive braced to be scammed, asking for commitment before giving anything reads as extraction rather than as setup. I killed it for progressive disclosure: connect wallet, start creating, profile later. Drop-off fell to 15%.

I replaced the jargon with plain-language tooltips and contextual help. Minting completion went from 54% to 82%. The flow did not change. Only the words did.

Impact

What I measured

my work, my instrumentation

54% → 82%

Minting completion, after blockchain jargon was replaced with plain language

How: Prototype testing, 15 users across three segments, same flow both rounds

60% → 15%

Onboarding drop-off, after the wizard became progressive disclosure

How: Prototype testing, drop-off by screen

40%

Of the initial feature list cut in the prioritisation workshop, scored on impact against feasibility

How: Workshop scoring against the shipped release scope

What the business reported

company outcomes my work contributed to

€7M

Funding round raised in 2022, with the prototype as the centrepiece of the investor pitch

60%

Platform usage growth within six months of launch

11

Reflection

In a zero-trust market, the most important design decision is what you show before asking for anything. Every trust signal I embedded mattered more than any feature, and the onboarding result proves it: the same product, gated differently, lost or kept three quarters of its users.

The result that surprised me most was the terminology one. I had assumed minting friction was structural and would need flow changes. It was linguistic. That is a useful correction to carry, because vocabulary is cheap to fix and easy to overlook when you are hunting for architectural problems.

The prototype did a second job I had not designed it for. It became the centrepiece of the funding pitch, which is a reminder that in an early-stage company the artefact has two audiences — the user and the person deciding whether the user ever gets it.

What I would do differently: push harder for native mobile from day one. Responsive web worked, and it limited the engagement patterns available to us. The foundation is there, but that decision was made on timeline rather than on what the product needed.

Result

54% → 82%

minting completion, after the terminology redesign. Platform usage grew 60% in the six months after launch.

Trust became the product's primary differentiator in a market where every competitor looked identical.

Worked with me

Joseph is indeed a leader. He had a way of perfectly organizing stakeholders and also fellow teammates. Above all, he has amazing UI/UX skills! I highly recommend working with Joseph — he is an amazing designer.

Daniel UdumukwuLead Product Designer · Yellow Card