RWA tokenisation
Off-chain assets on-chain — issuance pipelines, custody hand-off, reconciliation.
Domain · Blockchain
End-to-end Web3 engineering — from ideation to mainnet.
RWA tokenisation, NFT marketplaces, centralised exchanges, DeFi protocols, cross-chain bridges, wallets and account abstraction — eight production engagements across EVM and non-EVM chains. All real, all under NDA, all shipped.
Blockchain services
What we build.
NFT infrastructure
ERC-721/1155, lazy-mint, gas-optimised batch, marketplaces, royalty splits.
CEX engineering
Spot, derivatives, KYC/AML, hot-cold wallet ops, fee ledgers, treasury reconciliation.
DeFi protocols
Staking, lending, AMMs, vaults, yield strategies — secure, gas-aware.
Cross-chain bridges
Lock-mint, burn-mint, message-passing across EVM and non-EVM chains.
Smart contract audit
Slither, Mythril, Echidna, manual review, formal pre-audit hardening.
Web3 wallets
Custodial, non-custodial, MPC, WalletConnect v2 + SIWE, multi-chain.
Account abstraction
ERC-4337 bundlers, paymasters, session keys — gasless UX, social recovery.
Production case studies
Eight engagements — all shipped, all under NDA.
Case study · 01
RWA tokenisation — diamonds on-chain.
A multi-tenant tokenisation platform converting grading-laboratory reports into ERC-721 tokens on Polygon. Each token carries verified metadata, transfer history and ownership audit trail. Queue-driven mint orchestrator handles bulk batches up to 50,000 stones per run.
- Idempotent mint engine. Queue-driven, safe under partial failure and high volume.
- Gas-fee manager. Per-transfer ledger reconciling on-chain cost vs platform earned fee.
- Permissioned-party model. Laboratory-verified vs "Unverified" trust tiers.
- Seamless upgrade UX. Embedded into the partner trading platform for certification flow.
~6.5 mo
Delivery
8
Team
Polygon
Chain
50k+
Batch mint
Solidity (ERC-721/1155)ethers.jsNestJSAWS SQS / ECS / KMSPostgreSQLTenderlySlither / Mythril
Case study · 02
Multi-chain NFT marketplace — off-chain speed, on-chain settlement.
A high-performance marketplace supporting ERC-721 and ERC-1155 across Ethereum, Polygon, Arbitrum and Base. Off-chain orderbook with Wyvern-style on-chain settlement, lazy-mint, gas-optimised batch operations and configurable royalty splits.
- Sub-second listing UX. Off-chain orderbook with on-chain settlement on order match.
- ~80% cost reduction. Gas-optimised batch minting via ERC-1155 + Merkle-tree airdrops.
- Royalty enforcement. On-chain registry with opt-in creator-fee discovery.
- Real-time indexing. The Graph + custom pipeline for sub-second collection and activity queries.
4 mo
Delivery
7
Team
4
Chains
~80%
Gas saved
Solidityethers.js / viemNext.jsNestJSPostgreSQLRedisThe GraphIPFS / Arweave
Case study · 03
Centralised exchange — institutional-grade spot trading for APAC.
A multi-asset spot CEX serving APAC retail and institutional traders. High-throughput matching engine, hot/cold wallet treasury with MPC custody (Fireblocks), KYC/AML pipeline integrated with regional regulators, and on-chain deposit/withdrawal across 12 chains.
- 50,000+ orders/sec. Matching engine at p95 < 5 ms latency.
- MPC custody. Hot/cold treasury with Fireblocks + automated rebalancing rules.
- KYC/AML pipeline. Sumsub + Chainalysis screening; risk scoring per user and per address.
- Treasury observability. Per-user fee ledger, reconciliation reports via Grafana + Tenderly.
9 mo
Delivery
16
Team
12
Chains
50k+
Orders/sec
Go + RustSolidityNestJSReactPostgreSQLKafkaRedisFireblocksChainalysisSumsub
Case study · 04
DeFi protocol — staking, liquidity and cross-chain yield.
Single-asset staking, LP token staking and auto-compounding yield vaults with cross-chain routing across Polygon, Arbitrum and Base via LayerZero-style messaging. Governance via gauge-weighted voting and ve-token lock-up. Audited and deployed across 4 EVM chains.
- Auto-compounding vaults. Gas-aware harvest scheduling — claims only when net-positive.
- Cross-chain liquidity routing. Bridges underlying assets to the highest-APR chain.
- ve-token governance. Vote-escrowed model with gauge weights for emission distribution.
- CertiK audit + bug bounty. Third-party audit and bounty programme launched at GA.
5 mo
Delivery
6
Team
4
EVM chains
CertiK
Auditor
Solidity (OpenZeppelin)Foundry / HardhatviemReact + wagmiThe GraphLayerZero
Case study · 05
Cross-chain bridge — sub-minute finality across 6 EVM chains.
A multi-chain lock-mint bridge connecting Ethereum, Polygon, Arbitrum, Base, BNB Chain and Avalanche. Threshold-signature validator set (5-of-7) with rotating signers, on-chain message verification, retryable transactions and a relayer fee market.
- Threshold signatures. FROST + secp256k1 validator set with on-chain rotation.
- Sub-minute finality. Optimistic relay with on-chain dispute window.
- Retryable transactions. Failed messages re-relayed without double-mint.
- Insurance fund. 3% of bridged value covers validator-set slashing scenarios.
7 mo
Delivery
9
Team
6
Chains
5-of-7
Threshold
SolidityRust (validator + relayer)FROST / threshold-sigNode.jsPostgreSQLAWS Nitro EnclavesTenderly
Case study · 06
Smart contract audit — three-tier review, zero post-deploy criticals.
Blameo's audit practice combines automated tooling (Slither, Mythril, Echidna, Foundry invariant testing) with senior manual review. Engagements cover NFT contracts, DeFi protocols, bridges and tokenisation contracts. Standard 3-phase delivery: initial review, remediation, final report.
- Three-tier review. Automated static analysis, manual line-by-line, formal property testing.
- Fixed-price per audit. Risk Buffer for re-test cycles included.
- Public-report option. With client consent — builds trust with end users.
- Zero critical incidents. 12 audits delivered in 18 months with no post-deployment criticals.
2–6 wk
Per audit
2–3
Team
12
Audits done
0
Criticals
SlitherMythrilEchidnaFoundry (invariants + fuzzing)ManticoreTenderly
Case study · 07
Web3 wallet — multi-chain, non-custodial, consumer-friendly.
A React Native mobile wallet + browser extension supporting 8 EVM chains, Solana and Bitcoin. Non-custodial by default with optional MPC custody for institutional users. Social recovery via Shamir secret sharing and gasless onboarding for first 3 transactions via paymaster.
- Social recovery. Non-custodial with Shamir secret-sharing (3-of-5 guardians).
- Unified multi-chain. Single address, unified balance view across 10 chains.
- Gasless onboarding. ERC-4337 paymaster — first 3 transactions free for new users.
- Built-in DEX aggregator. 1inch + 0x API for swap UX without leaving the wallet.
7 mo
Delivery
7
Team
10
Chains
3-of-5
Recovery
React NativeTypeScriptethers.js / viemSolana web3.jsShamir secret-sharingFirebaseAWS KMS
Case study · 08
Account abstraction — gasless onboarding SDK for partner dApps.
A developer-facing ERC-4337 SDK — turnkey bundler + paymaster service. Sponsors gas for whitelisted user actions, supports session keys for long-lived tx authorisation, and social-recovery smart accounts. Multi-chain across Polygon, Base, Arbitrum and Optimism.
- Turnkey paymaster. Partner dApps configure gas sponsorship policies via dashboard.
- Session keys. Reduced signing prompts during single-session UX (gaming, marketplaces).
- Social-recovery smart accounts. Safe-style with on-chain guardian management.
- Open-source SDK. Hosted bundler service; partners can self-host if required.
4 mo
Delivery
5
Team
4
Chains
ERC-4337
Standard
Solidity (EntryPoint)Rust (bundler)TypeScript SDKethers.js / viemAWS LambdaPostgreSQL
Technology stack
Production-grade across the full Web3 spectrum.
Smart contracts
SolidityRust (Solana)Move (Aptos/Sui)VyperCairo (StarkNet)
Chains — EVM
EthereumPolygonArbitrumBaseBNB ChainAvalanche
Chains — non-EVM
SolanaAptosSuiBitcoin / LightningCosmos SDK
Web3 libraries
ethers.jsviemweb3.jsWalletConnect v2SIWERainbowKit
Frontend
React 18Next.jsVue / NuxtReact NativeTypeScriptTailwind CSS
Backend
Node.js + NestJS.NET Core 8Python (FastAPI)GolangGraphQL
Custody & security
AWS KMSFireblocksSlitherMythrilEchidnaTenderly
Data & indexing
PostgreSQLRedisKafkaThe GraphGoldskyDune Analytics
DevOps
AWSGCPDockerKubernetesTerraformGitHub Actions
Why Blameo
More than a dev shop — a Web3 engineering partner.
Senior leadership
Senior Tech Lead (7+ yr) + Senior PM lead every engagement. Middle-level execution team for delivery scale.
Security first
Multi-layer review: PR review + static analysis (Slither/Mythril) + optional third-party audit.
Web3 native
RWA, NFT, CEX, DeFi — production experience across EVM and non-EVM chains.
APAC presence
Working-hour overlap with APAC clients — Sydney, Singapore, Tokyo, Seoul.
Honest commercials
Fixed-Price with transparent Risk Buffer; Change Request mechanism uses the same rate card.
Beyond delivery
We sit beside your team for strategic Web3 decisions — wallet model, AA, multi-chain roadmap.
Got a blockchain idea that needs serious engineering?
From smart contracts to consumer UX — we'll meet you wherever you are on the spectrum, including telling you honestly when blockchain isn't the right tool.