RWS Blockchain Engineering

Verifiable data, custody-grade systems

We build blockchain systems for real businesses — smart contracts, distributed ledgers, custody, and traceability — so the records your operation depends on can be proven, not just trusted.

Trusted by financial-services and supply-chain teams

Breville
Atlassian
Notion
Okta
AWS
Toyota
Qantas
Intel
NCRVoyix
ASML
Mayo Clinic
Zapier
Operations

Build on-chain systems that actually run in production

From contract design through custody and observability, we ship blockchain components that meet the same operational bar as the rest of your stack — reviewed, monitored, and recoverable.

[01]

Contracts designed and audited

Smart contracts are scoped against your business rules, written with defensive patterns, and put through internal review plus a third-party audit before they go live.

[02]

Custody you can sign off on

Hot, warm, and cold wallet tiers are configured with role-based approvals, hardware-backed signing, and clear separation of duties for every movement of value.

[03]

Key management without the guesswork

HSM-backed key storage, documented rotation procedures, and recovery flows your security and operations teams can run without calling engineering.

[04]

Observability across every chain

Transaction status, block confirmations, gas posture, and contract events flow into one dashboard so on-call sees problems before customers do.

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“RWS treated our chain components like any other piece of critical infrastructure. The contracts were reviewed, the keys were properly managed, and we had monitoring on day one. That is rarer than it should be.”
Arjun Mehta

Head of Risk, Meridian Capital Partners

Insight

Records you can prove, outcomes your business can use

The point of on-chain data is not the chain — it is what it lets your business do. Cleaner provenance, faster settlement, and records regulators and counterparties can verify without a back-and-forth.

[01]

Provenance you can show, not assert

Origin, handling, and ownership history are written to an immutable ledger so customers, partners, and auditors see the same record you do.

[02]

Supply-chain traceability end to end

Each handover across suppliers, carriers, and warehouses is captured with a signed event, making recalls, claims, and disputes a matter of lookup instead of investigation.

[03]

Settlement that clears in hours

Tokenised representations and on-chain transfers cut multi-day reconciliation between counterparties down to confirmations measured in minutes.

[04]

Regulator-ready by design

Every contract call, signature, and transfer is logged with the metadata your compliance team needs for reporting, with exports tailored to your regime.

Product screenshot
[01]

Provenance you can show, not assert

Origin, handling, and ownership history are written to an immutable ledger so customers, partners, and auditors see the same record you do.

Product screenshot
[02]

Supply-chain traceability end to end

Each handover across suppliers, carriers, and warehouses is captured with a signed event, making recalls, claims, and disputes a matter of lookup instead of investigation.

Product screenshot
[03]

Settlement that clears in hours

Tokenised representations and on-chain transfers cut multi-day reconciliation between counterparties down to confirmations measured in minutes.

Product screenshot
[04]

Regulator-ready by design

Every contract call, signature, and transfer is logged with the metadata your compliance team needs for reporting, with exports tailored to your regime.

Breville

A capital markets firm settles trades in hours, not days

By moving post-trade transfers onto a permissioned ledger with RWS-built custody, the team replaced multi-day reconciliation with near-real-time confirmations counterparties could verify themselves.

Atlassian

Tracing a global supply chain from origin to shelf

Each handover across suppliers, carriers, and warehouses was written on-chain, giving the brand a provable provenance record customers and auditors could check without a single phone call.

Itau Unibanco

A bank ships a custody platform its risk team approved

RWS designed the wallet tiers, key ceremonies, and approval flows alongside the bank’s risk and security teams, so the platform launched with sign-off rather than around it.

FAQs


We build production blockchain systems for established businesses — smart contracts, custody, distributed ledgers, traceability, and verifiable records. We do not build speculative tokens or consumer trading products.


We pick the chain to fit the workload, not the other way round. Throughput, finality, privacy requirements, regulatory posture, and your existing stack all shape the choice, and we document the trade-offs before any code is written.


Every contract goes through internal review against a documented threat model, followed by a third-party audit. Keys are stored in HSMs with role-based approvals, and signing flows are tested end to end before production.


Yes. On-chain components sit alongside your ERPs, custodians, and data warehouses through well-defined APIs and event streams, so the rest of your stack consumes verifiable records without needing to understand the chain itself.


Contract activity, transfers, and approvals are logged with the metadata your compliance team needs, with exports tailored to your regime so audits and regulator queries become a lookup rather than an investigation.


Make your records provably true