Blockchain Development Company

A blockchain development company designs, builds and deploys the smart contracts, protocols and platform infrastructure that run an application on a blockchain network. The work spans contract engineering, security review, chain selection and the interfaces that non-technical users actually touch.

Blockchain Baby builds one thing: programmable savings vaults, trust fund structures and beneficiary management systems for banks, wealth platforms and family offices. Every engagement ends with contracts a family can read and an audit report the institution can file.

The question worth asking a supplier is whether they have built the specific thing you need, not blockchain in general. We have shipped 74 production contracts in savings and succession and nothing outside it.

A single programmable savings vault build starts at EUR 45,000 as a fixed price. That covers the contract, the parent-set release rules, gifting support and an external security audit on one chain.

A full savings, trust and beneficiary platform runs from EUR 95,000 to EUR 280,000. A white-label family savings app starts at EUR 320,000, including the consumer frontend and the first year of sustain.

Time-and-materials work is billed at EUR 1,400 per engineer day and sustain retainers start at EUR 12,000 per month. The benchmark table on this page sets each of those against a published market range where one exists.

A focused savings vault build takes 6 to 10 weeks from the scoping workshop to mainnet. Six is a floor rather than a target: five phases each have a minimum and the external audit alone accounts for two weeks of it.

A full savings and trust platform takes 14 to 22 weeks including the external audit. A white-label app with gifting and beneficiary management typically takes 20 to 30 weeks.

Compressing below six weeks is possible on a time-and-materials basis with a larger parallel team. It never comes out of the audit, which is the one phase we will not shorten to hit a date.

A programmable savings vault is an on-chain smart contract that holds funds for a beneficiary, usually a child or young adult, under conditions set by the depositor, usually a parent or a family office.

The release conditions, the fees and the vesting schedule live in auditable code rather than in a bank's internal system. A parent can set release at a given age, on university enrolment, on a fixed date or on a combination of them.

The practical difference is who can change the rule afterwards. A policy inside a bank can be revised; a condition inside a deployed contract is the contract, and nobody at the institution can quietly move it.

When a vault is created, the depositing parent or institution sets the release conditions as parameters in the contract: a minimum age expressed as a block timestamp, an optional proof-of-education gate through an oracle, a vesting tranche schedule or any combination of the three.

The contract then enforces those rules on its own. No bank and no intermediary can override or quietly modify them, and every change that is permitted at all leaves an on-chain record of who made it.

We only write a condition the contract can verify. Six release conditions have gone to production and three of them need no oracle at all, which makes them both the cheapest to audit and the hardest to dispute later.

We build on Ethereum, Base, Polygon PoS, Arbitrum One, Optimism, Gnosis Chain and Solana. Which one fits depends on the client's regulatory jurisdiction, fee sensitivity and existing infrastructure.

For regulated banks and wealth platforms in Europe, Ethereum mainnet and Gnosis Chain are the usual choices, for their stability and for the compliance tooling already built around them.

For high-volume consumer apps, Base and Arbitrum One keep the per-deposit cost low enough that a five euro birthday gift is still worth making. The chain selection table on this page sets the trade-off out row by row.

Once the platform is live, an end user creates a new savings vault in about 4 minutes through the platform's own interface.

The vault is deployed as a contract instance carrying the parent's chosen release rules and is live on-chain immediately. There is no manual approval step in between and no overnight batch.

Gifting from a grandparent or another relative into an existing vault takes under 60 seconds, from whatever wallet the contributor already uses.

Blockchain Baby holds ISO/IEC 27001:2022 certification under certificate BBBY-IS-2026-0628, issued by DEKRA and valid through 2029-06-15 for the current cycle. A SOC 2 Type II audit is complete under report BBBY-SOC-2026-H1, audited by Aprio.

We operate CSSF-aligned in Luxembourg, are PCI DSS compliant and have completed a full GDPR DPIA covering every vault and beneficiary data processing activity.

All contracts are externally audited before mainnet deployment. We have shipped 74 production contracts with zero critical findings and EUR 0 funds lost.

The beneficiary management module keeps a registry of vault-to-beneficiary mappings with role-based access for the depositor, a co-depositor, a guardian and the beneficiary. Each role is a permission written into the contract rather than a setting in a back office tool.

A family office managing 40 families administers hundreds of vaults from a single dashboard, with per-vault overrides and a full audit trail behind every action a trustee takes.

Inheritance is handled by a designated successor contract that routes vault ownership on a verified triggering event. An heir can read the entitlement on-chain instead of writing to a trustee to ask what it is.

Yes. Every savings vault exposes a public deposit interface that any wallet can call to contribute funds.

The release conditions the parent set apply to every deposit regardless of who made it. A grandparent's birthday gift enters the vault under exactly the same age lock or education gate as the parent's regular contributions.

The gifting module adds a dedicated flow and an optional gift message stored off-chain. On one Nordic deployment the client reported retention among gifting families running 40 percent higher than among standard savings users.

In a savings context, tokenization means representing a vault position or a claim on future funds as an on-chain token that can be tracked, transferred or pledged as collateral.

We implement it for institutional savings products where the underlying deposit is tracked as a standardised token. That is what makes family office co-investment structures and regulatory reporting workable at all.

Tokenization does not change the release rule. A tokenized position still unlocks on the condition the vault contract carries, and the token records the claim rather than offering a way around it.

Start with direct experience. Ask how many savings vault and custody contracts the company has put into production, and ask to read the audit reports rather than the case study written about them.

Then check the process and the certifications: a scoping workshop before commitment, independently audited contracts with zero critical findings, and ISO 27001, SOC 2 and PCI DSS where payment-adjacent operations are in scope.

Settle ownership and regulatory coverage before signature, not at handover. Confirm in writing that IP and source transfer to you, and confirm which of MiCA, AML and KYC and FATF the supplier has actually worked under.

At minimum, look for ISO/IEC 27001 for information security management and SOC 2 Type II for security, availability and confidentiality. PCI DSS compliance belongs on the list wherever payment-adjacent operations are in scope.

For European deployments, CSSF-aligned operations and a completed GDPR DPIA are expected as well. A supplier who cannot name the assessing body and the certificate number for each is not ready for a regulated buyer.

Blockchain Baby holds ISO/IEC 27001:2022 (Certificate BBBY-IS-2026-0628, DEKRA) and SOC 2 Type II (Report BBBY-SOC-2026-H1, Aprio), operates CSSF-aligned in Luxembourg and has completed its DPIA.

Ask for the external audit reports for every contract in production. Not a summary, not a badge on a website, the reports, from named firms, with the scope stated.

Then ask what happened to the findings. The number that decides anything is not how many were raised but how many were still open on the day the contract went to mainnet.

Every Blockchain Baby contract is independently audited before mainnet, all critical and high findings are remediated and confirmed, and we pay for the re-audit whenever the finding is ours.