← ALL WORK · CASE 09
NFT MARKETPLACE
An NFT marketplace for artists and collectors who shouldn't need to understand blockchains to use one — minting, listing and trading with the chain kept behind the counter.
ASSET STATE MACHINE — EVERY TOKEN WALKS THIS PATH
CHAIN CALL FAILS → RETRY VIA TATUM → STATE RECONCILED — LISTINGS NEVER LIE
01 — WARP
What had to be true first
The premise: users manage NFTs without touching raw blockchain plumbing. That means the marketplace database and the chain must never disagree. We put Tatum's API between Laravel and the networks and made every chain operation a tracked job — a listing only exists in the UI once the chain confirms what the UI claims.
02 — WEFT
What we wove through it
On that base went the product: wallet connection and authentication, minting flows, collection-based organisation, buying, selling and trading, and an admin dashboard with real control over users, collections and marketplace activity — because a Web3 platform still needs someone able to act when something is wrong.
03 — BEAT
How it was pressed tight
The review effort went where chain integrations rot: failed mints half-recorded, transfers confirmed on-chain but missed by the app, duplicate submissions from impatient users. Chain calls are idempotent jobs with reconciliation, so the marketplace state converges on the chain's truth instead of drifting from it.
04 — WEAR
Life in production
The marketplace runs with artists and collectors trading daily. Creators mint without seeing a hex string, collectors buy with a wallet click, and the admin team manages the platform from a dashboard instead of a block explorer.
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