Buy, Sell and Hold
A drop-in trading API and Web3 APIs so your users buy and hold crypto without leaving your app, backed by on chain data APIs for balances and history.
Blockchain TOP Developers is a blockchain development company based in Sao Paulo that builds embedded crypto APIs, exchange-as-a-service and fiat on and off ramp infrastructure for FinTechs, neobanks and wallets across Latin America. From smart contract development to multi chain development across 8 networks, founded in 2015, it has processed USD 18 billion in trading and on-ramp volume.
We are the crypto rails for Latin America. Embedded crypto and exchange-as-a-service for FinTechs, neobanks and wallets, with local fiat on and off ramps through PIX, SPEI and more, across Bitcoin, Ethereum, Solana and 5 more chains. Trustworthy, audited and built in Sao Paulo since 2015.
Where our engineers publish and speak
Blockchain TOP Developers provides a complete crypto infrastructure layer: one set of blockchain APIs and one set of rails covering buy, sell, hold, stake, move and tokenization, with local fiat built in across 7 Latin American countries. Our blockchain backend development and blockchain infrastructure development carry the load so your team ships a crypto product, not a platform.
A drop-in trading API and Web3 APIs so your users buy and hold crypto without leaving your app, backed by on chain data APIs for balances and history.
PIX, SPEI, PSE and more, settling in seconds so users never leave to fund their wallet.
Institutional-grade custody with MPC, key management and policy controls, so no single key holds funds. Non custodial wallet development and custodial wallet development both supported.
A trading engine handling 120,000 orders per second for your own exchange or order book.
Compliant staking smart contracts and DeFi integration so your users earn on assets without leaving your app, with liquidity pool development where a partner needs it.
Cross-border transfers built on our stablecoin rails development and blockchain payments development, cutting cost and time for the region.
Identity, screening and reporting tuned to each country's regulator, built in from day one.
Custom smart contract development for tokens, real world asset tokenization, payments and on-chain settlement, with ERC 20 token development and security token development when you need them.
A full crypto app under your brand, launched in weeks rather than years.
Every Blockchain Development Company engagement runs on a proven production stack. These are the exact languages, frameworks, token standards and infrastructure components our team uses across 134 shipped integrations.
Chain selection is a meaningful technical and commercial decision for any Blockchain Development Company. Use this table as a starting reference; we will validate the right fit in your scoping call.
| Chain · approach | Best for | Finality | LatAm compliance fit | Typical cost |
|---|---|---|---|---|
| Ethereum | DeFi, RWA tokenization, ERC-20 stablecoins, institutional smart contracts | ~12 sec (post-Merge) | Strong: auditors and regulators understand EVM | Higher gas; use L2s for high frequency |
| Polygon PoS | High-throughput dApps, low-fee NFT and loyalty, EVM-compatible scaling | ~2 sec | Good: EVM tooling, growing local liquidity | Very low gas; mature DeFi ecosystem |
| Solana | Matching engines, high-frequency order books, low-latency trading | <1 sec | Moderate: growing; fewer audit firms | Micro-fees; requires Rust or Anchor expertise |
| Tron | USDT remittances, stablecoin corridors, LatAm to Asia flows | ~3 sec | Moderate: FATF-aligned partners prefer Ethereum or Stellar | Very low TRC-20 fees; high USDT liquidity |
| Stellar | Cross-border fiat-backed stablecoins, LATAM-Africa corridors, anchor payments | ~5 sec | Good: Stellar anchors integrate with local payment networks | Negligible fees; built for payments |
| XRP Ledger | FX settlement, payment provider rails, institutional corridors | <5 sec | Good: XRPL has explicit payment use-case recognition | Very low; XRP required for account activation |
| Bitcoin | Store of value, Lightning payments, collateral for lending products | ~10 min (6 blocks) | Excellent: the most regulated and understood asset | Variable mempool fees; Lightning reduces cost |
Not sure which chain suits your product? Our scoping call maps your transaction volume, compliance jurisdiction and user profile to the right stack. Book a call.
A Brazilian neobank wanted to add buy, sell and hold without becoming a crypto company. Our blockchain development for FinTech embedded the trading API, custody and a PIX on-ramp, and they launched to their whole base in nine weeks.
We map your product, your licence and your local payment methods, and choose the right model.
You drop in our Web3 integration or we build your custom exchange, with blockchain integration, custody and ramps wired up.
We run the security, compliance and audit steps your regulator and partners require.
You go live with monitoring, on-call and an SLA, and we scale the engine as volume grows.
FinTechs that ship crypto on our platform go live in weeks rather than years, with secure smart contract development, audit ready smart contracts and local fiat rails included from day one. This is full cycle blockchain development without the multi year build.
| Factor | Built on Blockchain TOP Developers | Building it yourself |
|---|---|---|
| Time to launch | Weeks, with a drop-in API and white-label app | Years building an exchange and custody from scratch |
| Local fiat ramps | PIX, SPEI, PSE and more, already integrated | A separate, fragile integration for every country |
| Custody | Institutional MPC custody with policy controls | The single hardest thing to get right alone |
| Compliance | ISO 27001, SOC 2, PCI DSS and a Brazilian VASP registration | The licensing and audit burden lands on you |
| Reliability | 99.99% uptime at 120,000 orders per second | Your team owns every outage and reorg |
| Security | Independently audited, fuzzed and formally verified, with smart contract threat modeling on every release | An attack surface you maintain forever |
| Cost | From R$ 24,000 per month plus 15 bps | Headcount and risk that compound for years |
Best fit for our rails: FinTechs, neobanks and wallets that want scalable blockchain development and want to offer crypto fast and safely. Best fit for building yourself: a company whose product is the exchange itself and that has its own blockchain engineering team.
We decline roughly 31 percent of enquiries. If crypto would not move your numbers, we will tell you and save you the build.
The stakes are real. According to the Chainalysis 2024 Geography of Cryptocurrency Report, Latin America is one of the fastest-growing crypto regions, and a recurring reason launches fail is not demand but local rails and compliance, which is exactly where we put our work.
Launched buy, sell and hold for 1.2 million users in 9 weeks. PIX on-ramp settling in seconds. USD 4.2 billion traded in year one.
A neobank offering crypto under its own brand, with our crypto wallet development for FinTech, custody and PIX rails doing the heavy lifting.
Cut remittance cost from 6.5 percent to under 1 percent with crypto payment development on stablecoin rails. SPEI and PSE on and off ramps. 800,000 transfers in 8 months.
Families keep more of every dollar sent home, with local payout in seconds instead of days.
Fixed fees in Brazilian Real, volume priced in basis points, audit included at every stage.
A white-label buy, sell and hold app under your brand, ready to ship.
Start hereA custom exchange or a deep embedded integration into your existing app.
Get a quoteThe exchange-as-a-service platform, plus 15 basis points on trading volume.
Talk to usCustody, OTC and settlement for banks and large FinTechs, priced to scale.
Contact salesA defined deliverable at a fixed price: the Launch white-label app at R$ 90,000 or a scoped embedded integration at R$ 280,000 to R$ 850,000. Clear milestones, no surprises.
A dedicated squad embedded in your product for complex, evolving builds. As your blockchain technology partner we staff matching engine, custody, compliance and rails specialists to your roadmap, including a Solidity engineering team for any on-chain work.
Ongoing platform access, monitoring and engineering support from R$ 24,000 per month plus volume fees. Covers SLA, on-call, chain upgrades and compliance changes.
Why Brazilian Real? We price fixed fees in BRL because our partners operate across volatile local currencies, and volume fees in basis points so cost tracks your growth.
A Blockchain Development Company engagement is priced by six variable factors. Understanding them helps you scope accurately and avoids surprises mid-build.
A drop-in embedded API costs far less than a full bespoke exchange. The more business logic you need on-chain, the more smart contract development and audit work follows. Most builds land between R$ 280,000 and R$ 850,000; the Launch white-label is a fixed R$ 90,000.
Each additional chain requires dedicated node infrastructure, custody tooling and chain-specific testing. A single-chain embedded crypto integration is the simplest shape; adding cross-chain bridges or multi chain development lifts the build by one to three engineering months.
Every production contract is independently audited; scope and complexity determine the audit fee. Projects with formal verification (Halmos), threat modelling and a full smart contract security review run 20 to 40 percent higher than a basic fuzz-and-review pass, but that investment is what keeps zero critical findings on our record.
PIX is well documented, but SPEI CLABE routing, PSE flows and other regional on-ramp methods each carry a per-country integration cost. Bundling multiple countries in one build captures engineering reuse; staggered launches cost more overall.
A Brazil-only VASP build is scoped once. Adding Mexico, Colombia or a FATF-jurisdiction with different KYC and AML requirements multiplies the compliance surface. We scope each jurisdiction's reporting, screening and record-keeping needs at the start so there are no late-stage surprises.
An accelerated delivery that compresses a 4-month build into 10 weeks requires a larger dedicated team staffed simultaneously. We can meet compressed timelines for the right partners, but the cost reflects the parallel headcount rather than a sequential build. Realistic timelines save you 20 to 35 percent.
According to the Chainalysis 2024 Geography of Cryptocurrency Report, Latin America is one of the fastest-growing crypto regions in the world. We are the infrastructure underneath much of it. Our footprint:
Source: Blockchain TOP Developers internal platform metrics, partner production telemetry and signed case-study agreements, as of June 2026. Review count from Clutch (41) and G2 (22) verified review profiles. Last reviewed 2026-06-14 by Ronan Dalvin.
For any Blockchain Development Company operating in FinTech, security and regulatory compliance are not optional extras. They are the product. Here is our full posture.
Want to review our SOC 2 report or ISO certificate? Email security@blockchain-development-company.lat from a corporate domain.
Founder and CEO
I built exchange and payments systems in Latin America before it was fashionable, and I kept seeing the same thing. The crypto part was solved, but the local rails were not. Our team of 88 pairs exchange engineering with disciplined blockchain security engineering and has processed USD 18 billion in volume, putting crypto in front of 3.4 million people with every contract independently audited and nothing lost.
Blockchain TOP Developers started in 2015 after I watched a promising crypto product die at the on-ramp, because its only funding method took three days and failed half the time. The demand was there. The rails were not. We built the rails that settle in seconds with PIX and SPEI, and "win the on-ramp and you win the user" has been our rule since.
Read the foundational paper: "Local Rails, Global Coins: On-Ramping Latin America with PIX, SPEI and Stablecoins" by Ronan Dalvin. Blockchain TOP Developers Research Note BTD-2026-09, 34 pages.
View Ronan Dalvin's profile Ask the team a question88 engineers and specialists cover every layer a Blockchain Development Company needs to deliver at scale. Here is how a typical project squad is staffed.
Maps your product to the right chain, custody model and on-ramp stack. Owns the integration blueprint and pre-empts compliance blockers before a line of code is written.
Writes auditable Solidity (or Rust for Solana) with smart contract testing in Foundry and Halmos from day one. Responsible for every on-chain logic component and its upgrade path.
Runs Slither, Mythril and manual review on every contract. Coordinates the independent third-party audit and owns the threat model. The reason our smart contract security record stands at zero critical findings.
Builds and maintains the 120,000 orders-per-second matching engine, order book and settlement logic. Deep expertise in FinTech-grade reliability and latency at scale.
Implements KYC, AML screening, FATF Travel Rule data capture and country-specific reporting. Bridges your legal counsel and our technical team so compliance is wired in from day one, not bolted on later.
Owns the PIX, SPEI and PSE integrations plus custody key management. Responsible for the fiat-to-crypto and crypto-to-fiat paths that settle in seconds and never lose funds.
Runs contract test coverage, integration tests and acceptance criteria with your team. The project manager keeps milestones on track and is your single point of contact for delivery status.
Exact squad composition depends on project scope. A Launch build runs with 4 to 6 specialists. A full custom exchange engagement typically staffs 12 to 18 people at peak.
This note examines where Latin American crypto on-ramps succeed or fail. We study 41 on-ramp integrations between 2018 and 2025, separating each into an exchange and chain layer and a local payment-method layer such as PIX, SPEI and PSE. Across the dataset, 73 percent of on-ramp drop-off happened at local payment-method failures rather than at the exchange or the chain, even when the trading flow was sound. We present a reference design for second-settling local ramps and quantify its effect across two production deployments, with notes on the blockchain rails development and Web3 infrastructure development behind each.
Available on request to qualified parties and partners. Request the full PDF
The most significant shift in blockchain development in 2026 is not a new consensus mechanism. It is the convergence of AI and on-chain systems. Here is where we see it mattering most for LatAm FinTechs and what we are already shipping.
Latin American on-ramps face unusually high fraud rates because the population mix of banked and unbanked users creates identity signal gaps. We integrate ML risk models that score each PIX or SPEI funding event in real time, flagging synthetic identity attacks before settlement rather than after. This cuts chargeback exposure for partners by 40 to 70 percent in our early deployments.
AI agents that execute trading or payment logic autonomously need an on-chain settlement layer that is censorship-resistant and auditable. We design smart contracts that accept signed agent instructions, verify them on-chain and settle without a human approval step, enabling agentic workflows for treasury management and recurring cross-border payments.
Our Chainlink integration pattern feeds tamper-proof on-chain price feeds and payment-event data into off-chain ML pipelines. The result is AI models that can be audited at the data-input layer, not just the model layer, which regulators in Brazil and Mexico are increasingly requiring for automated lending and trading decisions.
We use LLM-assisted code review as a second pass alongside Slither and Mythril, not as a replacement for them. The combination catches edge cases that pattern-matching tools miss, particularly reentrancy variants and integer overflow paths introduced by AI-generated boilerplate. Our smart contract security record of zero critical findings reflects this layered approach.
Interested in agentic settlement or AI-enhanced compliance for your platform? Talk to our team.
A Blockchain Development Company is only as useful as the ecosystem it connects. These are the real protocols and infrastructure providers we use in production.
A Blockchain Development Company engagement should leave you in full control of your product. These are the concrete outputs every partner receives at the end of a build.
Every contract ships with its independent audit report, Slither and Mythril outputs, Foundry fuzz results and the Halmos formal proof where applicable. Source is verified on-chain at deployment. You own the code.
A step-by-step deployment and upgrade runbook, including contract addresses, ABI files, upgrade proxy logic, key rotation procedures and rollback steps. Written so your team can operate without us present.
A documented threat model covering the attack surface of your smart contracts, custody layer and API endpoints, plus the mitigations applied. Updated on every major release and stored per your retention policy.
Complete OpenAPI 3.1 spec for every endpoint, with code samples in TypeScript and Python. The SDK source is yours. No proprietary runtime dependency that could lock you in.
Country-specific KYC and AML integration documentation, FATF Travel Rule data flow diagrams and the evidence package your VASP registration or auditor requires. Written in Portuguese, Spanish and English as the market demands.
Two half-day knowledge transfer sessions with your engineering team, covering architecture decisions, monitoring setup, on-call runbooks and how to extend the system. Your team leaves ready to operate and extend the product.
102 verified reviews from FinTech and neobank partners across Latin America, collected on Clutch and G2.
Beatriz Carvalho
CPO at Pampa Bank
Blockchain TOP Developers let us offer crypto to 1.2 million users in nine weeks, under our own brand, with PIX funding that settles in seconds. They own the hard parts, custody and the engine and the ramps, so we could focus on our customers. USD 4.2 billion traded in year one.
1.2M users, launched in 9 weeksDiego Hernandez
CTO at Andes Remesas
Their stablecoin rails took our remittance cost from 6.5 percent to under 1 percent, with SPEI and PSE payout in seconds. Our customers feel the difference in every transfer home.
Remittance cost 6.5% to under 1%Lucia Fernandez
Head of Crypto at Banco Litoral
We launched a compliant DeFi staking platform on their platform and assets under management climbed fast. Their staking smart contracts and compliance tooling made our regulator conversations easy.
Staking product, AUM upRafael Souza
Founder at Onda Pay
Their stablecoin payment development gave us a PIX to stablecoin checkout that let our merchants accept crypto without touching it. Onboarding merchants is now a five-minute job instead of a project.
PIX to stablecoin checkout, merchants onboardedMateo Rojas
VP Product at Quetzal Wallet
We integrated their embedded buy and sell API in three weeks and shipped. Clean docs, fast support and a smooth Web3 wallet integration with rails that just work across the countries we serve.
Embedded API, integration in 3 weeksEvery page on blockchain-development-company.lat is owned by a named author and reviewed at least once per quarter. Statistics, pricing and timelines are sourced from internal delivery records and validated against the most recent quarter before publication.
Sources of truth:
Corrections: if you find an error, email editorial@blockchain-development-company.lat with the URL, the line and the correction. We acknowledge corrections within 1 business day and publish them in the Update log above with a date stamp.
Independence: Blockchain TOP Developers has no paid sponsorships on this page. Tool mentions (Slither, Mythril, Foundry, Halmos) are factual references to software we use; none are advertisers.
Last updated: 2026-06-14
This page is operated by Blockchain TOP Developers Tecnologia Ltda, Av. Brigadeiro Faria Lima 4440, Sao Paulo, SP 04538-132, Brazil, CNPJ 48.927.610/0001-35.
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Last updated: 2026-06-14
By accessing blockchain-development-company.lat you agree to these terms. The page is provided as marketing information about Blockchain TOP Developers services.
1. No advice. Nothing on this page constitutes legal, financial, investment, securities or tax advice. Blockchain TOP Developers builds blockchain and exchange software. We do not advise on whether a token is a security under any jurisdiction, on the tax treatment of crypto assets, or on regulatory compliance outside our written engagement scope.
2. Scope of services. Engagements with Blockchain TOP Developers are governed by a separate signed Statement of Work or platform agreement that defines deliverables, service levels, payment terms, IP assignment and warranties. The prices and timelines on this page are indicative ranges, not binding offers.
3. Crypto and contract risk. Crypto markets and smart contracts carry inherent risk including price volatility, code-level vulnerabilities, custody risk, oracle manipulation, third-party dependency failures and chain reorgs. Blockchain TOP Developers warrants delivery of audited code and a defined service level per the agreement, not the absence of all possible risk.
4. Intellectual property. Page content (text, SVG illustrations, structure) is © 2015-2026 Blockchain TOP Developers Tecnologia Ltda. The Blockchain TOP Developers name and coin mark are unregistered trademarks. Reuse with attribution is permitted for non-commercial commentary and journalism.
5. Limitation of liability. To the maximum extent permitted by applicable law, Blockchain TOP Developers is not liable for indirect, incidental, special or consequential damages arising from your use of this page or any content linked from it.
6. Governing law. The laws of the Federative Republic of Brazil. Exclusive venue: the courts of the city of Sao Paulo, state of Sao Paulo.
ISO/IEC 27001:2022: Information security management
SOC 2 Type II and PCI DSS
Regulatory
To request copies of any certificate or the SOC 2 report, email security@blockchain-development-company.lat from a corporate domain.
These are the six questions every buyer of blockchain development services should ask before signing. Use them as a checklist.
Any credible blockchain development partner can point to named, verifiable deployments with public or NDA-covered metrics. At Blockchain TOP Developers that means USD 18 billion processed and 99.99% exchange uptime, backed by signed case-study agreements, not marketing claims.
Self-reviewed contracts are not audited contracts. Ask for the third-party audit report, the finding count and what was fixed before deployment. Our record is zero critical findings across 134 mainnet contracts; we share audit summaries under NDA at the proposal stage.
Some blockchain development firms retain a runtime licence or proprietary dependency that persists after the engagement. Insist on full IP assignment in the SOW with no carve-outs. We assign all contract and SDK source on final payment, full stop.
ISO 27001, SOC 2 Type II and PCI DSS are the minimum set for a FinTech-grade blockchain development company operating in the payments space. For Latin America, a Banco Central do Brasil VASP registration matters if you serve Brazilian users. We hold all four; ask for the certificate numbers and verify them.
Building on Ethereum is not the same as integrating PIX, SPEI or PSE. On-ramp failures account for 73 percent of Latin American crypto drop-off according to our research. Ask your prospective partner how many local-rail integrations they have shipped and in which countries, then check the references.
A partner confident in their work will not lock you in. Ask about data portability, exit notice periods and handover documentation. Our platform tier is month-to-month with 90 days notice; your data exports on request; and we commit to two knowledge transfer sessions so your team can operate after exit.
A blockchain development company designs, builds and audits the smart contracts, APIs and infrastructure that run applications on a blockchain. The work spans smart contract development, dApp development, blockchain integration and blockchain backend development. Blockchain TOP Developers focuses on embedded crypto and exchange-as-a-service for Latin American FinTechs, including trading APIs, custody, fiat on and off ramps and stablecoin remittance rails.
Cost depends on scope. A white-label launch is R$ 90,000 fixed over 6 weeks. A custom exchange or embedded integration is R$ 280,000 to R$ 850,000. The exchange-as-a-service platform starts from R$ 24,000 per month plus 15 basis points on trading volume. Institutional custody and OTC are custom.
Look for real production volume, independent security audits and named engineers with verifiable credentials. The strongest blockchain development partner pairs blockchain development experts with smart contract security experts and offers end to end blockchain development under one roof. Blockchain TOP Developers has processed USD 18 billion in volume, holds ISO 27001, SOC 2 Type II and PCI DSS Level 1, and is registered with the Banco Central do Brasil. We decline roughly 31 percent of enquiries when crypto would not genuinely improve the product.
Embedded crypto and exchange-as-a-service for Latin American FinTechs, neobanks and wallets. Buy, sell, hold and stake through an API, custody, a matching engine and local fiat on and off ramps through PIX, SPEI and other regional payment methods. When a partner needs it we add DeFi platform development, staking smart contracts, asset tokenization and crypto wallet development on top. We have processed USD 18 billion in volume and serve 3.4 million end users through 26 partner apps.
Because that is where Latin American on-ramps break. Our research found 73 percent of crypto on-ramp drop-off in the region happened at local payment-method failures, not at the exchange or the chain. We integrate PIX in Brazil, SPEI in Mexico, PSE in Colombia and more, with settlement in seconds.
Bitcoin, Ethereum, XRP Ledger, Solana, Tron, Stellar, Litecoin and Polygon PoS. Tron and Stellar matter for stablecoin remittances across the region, and we add new assets as partner demand grows.
Yes. Our smart contract testing runs Slither, Mythril, Foundry fuzzing and Halmos in CI plus manual review, so smart contract security and contract test coverage are enforced before deployment, and every production contract is independently audited. We hold ISO 27001, SOC 2 Type II and PCI DSS Level 1, and we are registered with the Banco Central do Brasil as a virtual asset service provider. Zero critical findings in production and no funds lost.
A white-label launch is R$ 90,000 fixed over 6 weeks. A custom exchange or embedded build is R$ 280,000 to R$ 850,000. The exchange-as-a-service platform is from R$ 24,000 per month plus 15 basis points on trading volume. Institutional custody and OTC are custom. We price fixed fees in Brazilian Real because our clients operate across volatile local currencies.
We decline roughly 31 percent of enquiries. We say no when a partner has no licence or compliance path to offer crypto, when a simpler payments product would serve users better and when a token launch lacks legal counsel on securities classification.
Ask for real production volume and named audit reports. Ask who owns the IP and source code after delivery. Ask which certifications they hold and whether their team has experience with the local payment rails in your market. Ask what the exit clause looks like and whether you can take your data with you. A strong blockchain development partner will answer all six questions without hesitation. We share audit summaries, certificate numbers and IP assignment terms at the proposal stage.
Six factors: the scope and integration depth, the number of chains, the audit and security depth required, the local payment-method integrations needed, the compliance and licensing requirements across your target markets, and any timeline pressure. A Launch white-label at R$ 90,000 fixed and a full custom exchange at R$ 280,000 to R$ 850,000 are the two reference points. The cost drivers section above explains each factor in detail.
You do. Every contract, SDK and integration we build for you transfers to you on final payment under a full IP assignment clause in the Statement of Work. There is no proprietary runtime, no hostage dependency and no recurring licence fee for code we already delivered. The exit and handover terms are defined before we start.
Tell us about your app and your market and we will show you a live on-ramp on real rails. We typically reply within 1 business day.