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Two years shipping NFT, launchpad & marketplace products at Web3 scale

Cryptoware was my Web3 agency era — two years shipping production NFT, launchpad, marketplace, DeFi and DAO products end to end, contracts plus React front-ends. I launched NFT collections across ERC-721 / 721A / 1155 (over $4M in sales and 5,000+ holders), built a launchpad that deployed 80 collections as cheap minimal-proxy clones ($300K+ raised), and integrated the audited contracts behind OASISX, a MENA peer-to-peer digital-asset marketplace.

What I owned

  • Launched NFT collections on ERC-721 / 721A / 1155 — using ERC-721A's batch-mint storage design (owner written once per batch, resolved lazily on read) to cut mint gas by roughly 86% on large public drops, while reasoning about the higher transfer cost that comes with it.
  • Gated presales with both Merkle-tree allowlists (a single 32-byte root on-chain, verified by proof) and EIP-712 signature vouchers (backend-signed, recovered on-chain) — phased mints (allowlist → public) with per-wallet and supply caps, reentrancy-guarded.
  • Made reveals provably fair: a committed provenance hash plus a Chainlink VRF randomized starting index, so no one — the team included — could snipe rares before reveal; metadata pinned to IPFS.
  • Handled royalties across the whole 2022–23 shift — EIP-2981, the OpenSea operator-filter era, and the move toward ERC-721C creator-enforced royalties.
  • Built the launchpad engine: a factory that deploys a fresh ERC-721/1155/20 per launch as an EIP-1167 minimal-proxy clone (deterministic CREATE2 addresses, Initializable templates, no constructor) — 80 launches, $300K+ raised.
  • Integrated the audited contracts behind OASISX — an escrow-less, approvals-based marketplace where sellers sign EIP-712 orders off-chain (no gas) and the settlement contract verifies the signature and atomically moves the NFT and splits payment across seller, platform fee and royalty.
  • Shipped adjacent DeFi and DAO pieces — staking/farming on the O(1) reward-per-token accumulator pattern, swaps/AMM and arbitrage flows, and OpenZeppelin Governor + Timelock governance.
  • Delivered the React front-ends across all of it — mint UIs, marketplace flows and wallet UX wired with ethers.js / Wagmi.
  • Impact $4M+ sales · 5,000+ holders
  • Standards ERC-721A · 1155 · EIP-2981
  • Reveal Provenance + Chainlink VRF
  • Marketplace EIP-712 signed orders (OASISX)
◆ By the numbers
  • $4M+ NFT sales
  • 5,000+ unique holders
  • 80 token launches
  • $300K+ raised
The commercial footprint across the agency era
LAUNCHPAD FACTORY EIP-1167 clones · CREATE2 NFT COLLECTION ERC-721A · one per launch clone + initialize() ① PHASED MINT Closed → Allowlist → Public Merkle root · EIP-712 sig per-wallet + supply caps ② FAIR REVEAL provenance hash committed Chainlink VRF → start index IPFS metadata ③ ROYALTIES EIP-2981 → ERC-721C creator-enforced per-launch lifecycle ◆ THE ERC-721A TRICK owner written once per batch, resolved by a back-scan on read → ~86% less mint gas the honest trade-off: transfers cost more, so it wins when buyers mint many and hold
The NFT launch engine — clone factory → gas-lean ERC-721A mint → provably-fair reveal
SELLER keeps NFT · grants approval ORDERBOOK off-chain signed order BUYER fulfils the order EIP-712 · no gas broadcast SETTLEMENT CONTRACT verify EIP-712 sig · ~3k gas check nonce · expiry · cancel atomic: NFT → buyer + split pay fulfill(order, sig) → SELLER sale proceeds → PLATFORM FEE treasury → ROYALTY EIP-2981 receiver Escrow-less — the NFT stays in the seller's wallet via an approval until the atomic fill; nothing is locked.
OASISX — escrow-less P2P trading on off-chain signed orders
▶ WALKTHROUGH

Loom walkthrough of the agency-era work: the NFT launch engine, a phased Merkle-gated mint, the VRF reveal, and the OASISX signed-order marketplace. Record it and drop the embed URL into caseStudies.ts.

Engineering walkthrough (Loom)
Cryptoware key visual
Key visual