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HashmarkLabs

Case files

Live systems, drawn the way we built them.

8 flagship systems in production, each with the problem, what we built, the stack and a simplified architecture drawing. Then 17 more, drawn layer by layer, and engagement files from our growth, BD and tokenomics work.

Client names stay private. Every system here is real and in production, and we're glad to walk you through the ones relevant to you on a call.

AI systems

3 AI · 2 AI × Web3 · 5 more

AI doing real work in production, every day.

Includes the systems where AI meets Web3.

  1. AI × Web3

    A platform that compares prediction-market venues in real time and surfaces what the gaps mean.

    Node.js · TypeScript · PostgreSQL · TimescaleDB · Event-⁠driven

    Live

    Details on request

  2. AI × Web3

    Decision infrastructure for commodity trading

    Enterprise AI & trade infrastructure

    Credit and supply-chain decisions backed by AI scoring, live signals and on-chain proof.

    React · TypeScript · Node.js · PostgreSQL · AI/ML · On-⁠chain proofs

    Live

    Details on request

  3. AI

    Customers send plans, photos and voice notes; the agent returns a priced quote in minutes instead of hours.

    Agent orchestration · Multimodal LLMs · Messaging API · Tracing & evals

    Live

    Details on request

  4. AI

    Analysts ask in plain language and get the exact passage, table or figure, with its source.

    Vector search · Metadata filtering · Reranking · Multi-⁠agent orchestration

    Live

    Details on request

  5. AI

    Reviewers get a recommendation where every statement links back to the page it came from.

    Multimodal LLMs · Grounded reasoning · Client-⁠cloud deployment · Evaluation benchmark

    Live

    Details on request

More AI systems

5 systems

5 more AI systems, layer by layer.

Memory, multi-tenant retrieval, negotiation, voice and deployable platforms. Each sketch shows the layers the system runs on and the path one request takes through them.

  • ASSISTANTMEMORYSTORESChat agentContext builderExtract factsDedupe & mergeHybrid recallPostgresVector indexpass evals?Recall quality is evaluated before every release.

    AIAI · Agents

    Long-term memory for an AI assistant

    Memories created over time, retrieved with keyword, meaning and metadata, and evaluated before each release.

  • CLIENTSPIPELINEISOLATIONAdmin uploadWeb chatParse & OCRChunk & embedHybrid searchTenant indexRow-level rulesPer-tenant keysOne client's documents never answer another's question.

    AIAI · RAG

    Multi-tenant document assistant

    PDFs, tables and images turned into searchable knowledge, with each client's data kept separate.

  • BUYERAGENTSUPPLIER SIDEGoals & limitsin limits?Strategy modelOffer generatorState storeEmail / portalReply parserRound trackerThe agent negotiates inside limits a person set.

    AIAI · SaaS

    Procurement negotiation agent

    An agent that runs repeated, strategic negotiations, on a modernised serverless backend.

  • CALLERSVOICE PIPELINEOPERATIONSPhone (SIP)Web voiceStreaming STTDialogue agentTTSAutoscalingHuman handoffCall QA evalsA person takes over the moment it's needed.

    AIAI · Voice

    Multilingual voice and chat agents

    Speech recognition across dialects and generated replies, scaling with call volume.

  • WORKFLOWSPLATFORMCUSTOMER CLOUDLive workflowReview queuePrompt registryModel gatewayin bounds?Open-weight LLMKubernetesSecrets & KMSThe data never leaves the customer's cloud.

    AIAI · Platform

    Deployable AI platform

    An AI platform installed in the customer's own cloud, with bounded LLM checks in live workflows.

Web3 systems

3 Web3 · 2 AI × Web3 · 12 more

Protocols and markets where a bug costs real money.

  1. AI × Web3

    A platform that compares prediction-market venues in real time and surfaces what the gaps mean.

    Node.js · TypeScript · PostgreSQL · TimescaleDB · Event-⁠driven

    Live

    Details on request

  2. Web3

    One system for banking, trading, wallets and payments.

    Matching engine · Double-⁠entry ledger · Fiat on/off-⁠ramp · MPC custody-⁠ready

    Live

    Details on request

  3. Web3

    Several interlocking protocols whose rewards come from real activity, not new token emissions.

    Solidity · Tokenomics · Liquidity protocols · Vaults · Fee routing

    Live

    Details on request

  4. AI × Web3

    Decision infrastructure for commodity trading

    Enterprise AI & trade infrastructure

    Credit and supply-chain decisions backed by AI scoring, live signals and on-chain proof.

    React · TypeScript · Node.js · PostgreSQL · AI/ML · On-⁠chain proofs

    Live

    Details on request

  5. Web3

    Order-book trading rebuilt from first principles for a chain with no shared mutable state.

    UTxO model · Validator scripts · Off-⁠chain tx builders · Event watchers

    Live

    Details on request

More Web3 systems

12 systems

12 more Web3 systems, layer by layer.

NFT finance, wallets, identity, ticketing, gaming and real-world assets: the contracts, the off-chain services and the controls around them, simplified.

  • APPCONTRACTSRISK · DATALending appRental marketEscrow vaultLoan managerERC-7066 locksFloor oracleLiquidation botIndexerA loan is only as safe as its liquidation path.

    Web3NFT-Fi

    NFT staking, rental and lending

    Protocols for staking, renting and borrowing against NFTs.

  • CREATORSCONTRACTSMARKETLaunch wizardTrading UIToken factoryBonding curveVestingAMM migrationLP lockHolder indexLaunch rules are enforced in the contract, not the UI.

    Web3Token launch

    Token launch platform

    On-chain launch and liquidity mechanics.

  • PLAYERCONTRACTSRANDOMNESSGame clientWalletBet escrowGame contractPayout vaultVRF requestvalid?Result indexAnyone can re-check an outcome from its proof.

    Web3Gaming

    Provably fair game

    Outcomes anyone can verify, using Chainlink VRF.

  • PLAYERSECONOMYMARKET · DATAGame clientEmbedded walletItem NFTsSoft currencyCraft & burnOrder bookEscrow tradesTelemetryEvery sink is designed alongside its source.

    Web3GameFi

    In-game NFT economy

    NFT economies with tokenised item trading.

  • APPSIDENTITYPROOFSDAO portalVerifier appDID registryCredentialsRevocationsZK proofvalid?Voting weightProve the claim without exposing the data.

    Web3Identity · DAO

    Decentralised identity & reputation

    ZK-ready W3C DID identity and reputation.

  • DEVICEWALLET CORECHAINSMobile appSecure enclaveTx buildersafe?SignerEVM chainsSolanaBitcoinEvery transaction is simulated before it is signed.

    Web3Wallets

    Multi-chain wallet

    A wallet across chains, with secure key handling.

  • STOREFRONTPAYMENTSCONTRACTSCreator storeCheckoutCard + cryptoEscrowLazy mintRevenue splitPayout ledgerEvery sale settles every partner's share.

    Web3Commerce

    NFT commerce

    NFT commerce with revenue sharing.

  • PEOPLECONTRACTSGATEOrganiserBuyer appTicket NFTsResale capsRotating QRvalid?Check-in logA screenshot of a ticket won't get through the gate.

    Web3Ticketing

    On-chain ticketing

    Tickets on-chain, with access that resists fraud.

  • INVESTORSASSETSCYCLESInvestor portalverified?Plot registryAsset tokensTransfer rulesHarvest dataProfit calcDistributionsPayouts follow the harvest record, not a spreadsheet.

    Web3RWA · ESG

    Tokenised plantations

    Plantation assets tokenised, with profit cycles.

  • COLLECTORSCUSTODYCHAINCollectorRedeem requestGradingInsured vaultShippingItem NFTBurnProvenanceOne item, one token, burned when it leaves the vault.

    Web3RWA

    Collectible custody & redemption

    Physical collectibles held in custody and redeemable by their owners.

  • INVESTORSOWNERSHIPINCOMEInvestor appeligible?Fraction tokensCap tableTransfer rulesRent collectionPro-rata payoutReserve fundThe cap table and the chain never disagree.

    Web3RWA

    Fractional real estate

    Fractional ownership ledgers for real estate.

  • BUYEROWNERSHIPFULFILMENTGalleryClaim pageCertificate NFTClaim lockProvenanceShippingdelivered?The claim locks the token before anything ships.

    Web3Creative

    NFTs with physical delivery

    NFT ownership tied to delivery of a physical piece.

Engagement files

Growth · BD · Tokenomics

Growth, sales and tokenomics, told without the names.

The problem and what we did, without names or numbers. We can walk through any of them in more depth on a call.

  • Sector

    Web3 · early-stage

    Client

    Private

    Credibility and users for a Web3 social-finance product

    A small team with a multi-chain product needed trust and users in a crowded category.

    • Positioning built around what traders actually care about
    • Vetted creator and KOL campaigns
    • A website designed to turn that attention into sign-ups

    Growth & Marketing

  • Sector

    Web3 · data

    Client

    Private

    Product and organic growth for a crypto analytics platform

    A platform scoring projects across dozens of metrics needed a clear product structure and a market story, not just promotion.

    • Market and competitor research that shaped which modules shipped
    • Information design for dense on-chain data, tested with users
    • Search and AI-search content, acquisition, weekly calls and monthly metric reports

    Growth & Marketing

  • Sector

    AI × Web3 · early-stage

    Client

    Private

    A seasonal contribution programme for an AI × Web3 consumer app

    One-off quests brought crowds that didn't come back. The project needed repeat, high-quality contribution.

    • Year-long seasons run with ecosystem partners
    • Contribution tracked and scored for quality, with anti-cheat filtering
    • Rewards split into an immediate unlock and a vested remainder

    Growth & Marketing

  • Sector

    Web3 · wallets

    Client

    Private

    Launch acquisition for a new crypto wallet

    A wallet starting from zero, in an ad environment that restricts crypto.

    • Paid placements tested within platform restrictions
    • Landing page and creative combinations tested against install cost
    • Search and media placements alongside paid channels

    Growth & Marketing

  • Sector

    B2B services

    Client

    Private

    Owned outbound for a small B2B training business

    The team needed a repeatable way to reach buyers, not a rented list.

    • A prospecting platform set up on multiple lead sources
    • Authenticated sending domains and automated sequences
    • Replies and opportunities routed into a CRM the client owns

    BD, Sales & Partnerships

  • Sector

    Corporate finance

    Client

    Private

    Decision-maker outbound for a boutique M&A adviser

    A small advisory team needed steady meetings with business owners, the hardest audience to reach cold.

    • Outbound infrastructure brought in-house
    • A custom account and lead-scoring model
    • Targeting built around owners and M&A decision-makers

    BD, Sales & Partnerships

  • Sector

    Startups · services

    Client

    Private

    Sales operations for small, stretched teams

    Prospects, outreach and payment lived in separate spreadsheets and inboxes, and deals stalled between handoffs.

    • One lead record from first touch through follow-up and payment
    • Automation and nurture for routine steps
    • Pipeline visibility the whole team shares

    BD, Sales & Partnerships

  • Sector

    B2B SaaS

    Client

    Private

    A partner programme built on customer overlap

    Partnerships ran on email and spreadsheets, and nobody could say which partners were worth an integration.

    • Account data mapped against partners to find shared customers
    • Integrations chosen by overlap, with joint value propositions and collateral
    • Partner context put in front of sales and customer success, with co-selling plays

    BD, Sales & Partnerships

  • Sector

    Consumer apps

    Client

    Private

    Scaling an affiliate and creator programme

    Affiliate programmes run by one person on spreadsheets, or leaning too heavily on a single niche of publishers.

    • Partner operations moved to one platform with placement-level tracking
    • New partner types recruited, from mass-media publishers to creators
    • Commission terms, payouts and reporting automated

    BD, Sales & Partnerships

  • Sector

    Web3 · gaming

    Client

    Private

    A shared token economy for an on-chain game hub

    Several games had to share one economy, and it had to hold up before any real money was involved.

    • Discovery, then a first playable title on testnet within weeks
    • NFT and staking mechanics, and a sustainable token-economy design
    • A referral loop tied to NFT progression

    Product & Tokenomics

  • Sector

    Web3 · RWA

    Client

    Private

    Token design for an institutional real-world-asset platform

    An institutional RWA platform needed a token with a real role in issuance, and a credible story for early investors.

    • Stakeholder mapping and the token's role in asset issuance
    • Utility and value capture tied to protocol fees, with governance levers
    • Introductions to investors for the pre-seed round

    Product & Tokenomics

Stack

8 systems · 9 layers

What the flagship systems are built with.

The core stack of each live system, as published in its case file.

  • AI × Web3

    Market intelligence

    AI & data intelligence

    • Node.js
    • TypeScript
    • PostgreSQL
    • TimescaleDB
    • Event-driven
  • Web3

    Trading & ledger

    Financial & trading infrastructure

    • Matching engine
    • Double-entry ledger
    • Fiat on/off-ramp
    • MPC custody-ready
  • Web3

    Fee-funded DeFi

    DeFi & tokenomics

    • Solidity
    • Tokenomics
    • Liquidity protocols
    • Vaults
    • Fee routing
  • AI × Web3

    Trade decisions

    Enterprise AI & trade infrastructure

    • React
    • TypeScript
    • Node.js
    • PostgreSQL
    • AI/ML
    • On-chain proofs
  • Web3

    On-chain market

    Protocol engineering

    • UTxO model
    • Validator scripts
    • Off-chain tx builders
    • Event watchers
  • AI

    Quoting agent

    AI agents & agentic workflows

    • Agent orchestration
    • Multimodal LLMs
    • Messaging API
    • Tracing & evals
  • AI

    Research retrieval

    RAG & enterprise knowledge

    • Vector search
    • Metadata filtering
    • Reranking
    • Multi-agent orchestration
  • AI

    Document review

    Vertical AI for finance & risk

    • Multimodal LLMs
    • Grounded reasoning
    • Client-cloud deployment
    • Evaluation benchmark

Our day-to-day stack, layer by layer.

We staff every layer of a modern AI or Web3 system with senior people, so nothing important gets outsourced to a guess.

  1. L9

    Product surfaces

    What your users touch.

    • TypeScript
    • React
    • Next.js
    • React Native
    • Tailwind
    • wagmi & viem
    • WalletConnect
    • Embedded wallets
  2. L8

    AI models & agents

    Reasoning, tools and orchestration.

    • OpenAI
    • Anthropic Claude
    • Google Gemini
    • Llama & Mistral (open-weight)
    • LangGraph
    • LlamaIndex
    • Model Context Protocol
    • Speech-to-text & TTS
  3. L7

    Retrieval & data

    What the models and markets read from.

    • PostgreSQL
    • pgvector
    • Qdrant
    • Elasticsearch
    • Hybrid search & rerankers
    • TimescaleDB
    • ClickHouse
    • Kafka
    • Redis
    • Airflow
  4. L6

    Evaluation & observability

    How we know it works, and keeps working.

    • Eval harnesses
    • Langfuse
    • OpenTelemetry
    • Prometheus
    • Grafana
    • Sentry
    • Red-team suites
  5. L5

    Services & backends

    The engines underneath.

    • Node.js
    • Python (FastAPI)
    • Go
    • Rust
    • gRPC
    • GraphQL
    • WebSockets
    • Event-driven services
    • Low-latency matching engines
  6. L4

    Smart contracts

    Code that holds value.

    • Solidity
    • Rust (Anchor)
    • Move
    • Aiken
    • Plutus
    • CosmWasm
    • OpenZeppelin
    • Foundry
    • Hardhat
  7. L3

    Chains & scaling

    Where it settles.

    • Ethereum
    • Arbitrum
    • Optimism & OP Stack
    • Base
    • Polygon
    • Solana
    • Cardano
    • Cosmos SDK
    • Substrate & Polkadot
    • Internet Computer
    • Chainlink
    • The Graph
  8. L2

    Cryptography & security

    Proof, privacy and keys.

    • zkSNARKs
    • zkVMs
    • Trusted execution environments
    • MPC & threshold signing
    • Account abstraction (ERC-4337)
    • Slither
    • Fuzz & invariant testing
    • MEV-aware design
  9. L1

    Cloud & operations

    Keeping it up, and at a known cost.

    • AWS
    • GCP
    • Azure
    • Docker
    • Kubernetes
    • Terraform
    • CI/CD
    • KMS & HSM key management

79 technologies. The right ones for your system get chosen in discovery, not from habit.

Office hours

Working on something like these?

Your first call is with a senior lead who will own the work. Send a few lines about the product and what's hard about it.

Your point of contact
Vidit Galav, Director
Delivery
Our team works across US, European, APAC and Middle East hours.