Digital Transaction Limited

Blockchain done right.

Meet the

Hybrid Distributed Ledger.

ParallelChain™ is DTL's high performance hybrid private blockchain system, with real time updates and a speed of up to 100,000 Transactions Per Second (TPS). Businesses can build custom apps on the ParallelChain™ platform or port existing Ethereum or Hyperledger apps to the platform and enjoy higher TPS and immediate updates.
Demo ParallelChain™ on your local machine


Provable immutability, trust, and speed. Because of technical and design limitations, blockchain platforms have hitherto had to compromise on at least one of these goals to satisfy the rest. ParallelChain's patent pending innovations changes all that, making it the first truly 'business-native' blockchain, ready for today's real-world applications and scalable to power tomorrow's.


Infinitely configurable to combine the best features of public, and private blockchains.


Built to handle the massive quantity of data generated by new and emerging technologies such as intelligent IoT and 5G.


Designed from the ground-up to play nice with other blockchain platforms and technologies.

Privacy compliant
Privacy compliant

The first and currently only blockchain that complies with the EU GDPR Privacy Ordinance

Public (permissionless)

Anyone can read read and endorse transactions.

Public (permissioned)

Anyone can read but has to seek permission to endorse transactions.

Private (permissionless)

Any member of the consortium can read and endorse transactions.

Private (permissioned)

Any member of the consortium can read, but has to seek permission to endorse transactions.

Unlimited scalability

Close-to-perfect parallelism avails an unlimited number of endorsed parties with zero speed degradation.

Class-leading TPS

Over 100,000 transactions per second (TPS) for one ParallelChain instance. Scales to n * 100,000 TPS for n ParallelChains.

Real-time updates

Low latency of ≤ 50ms, allowing for immediate confirmation of updates.

No need for dedicated hardware

Efficient software design removes dependence on costly hardware (topline servers, semiconductor bulk memory, GPU accelerator) to achieve real-time responses.


The world's second-largest cryptocurrency platform by market cap.


Permissioned blockchain infrastructure originally contributed by IBM, Digital Asset, and the Linux Foundation.

Provable immutability

Trust is only earned when it can be independently validated and proved. ParallelChain enables participants to verify the immutability of the chain for themselves.

Ability to forget

Data persisted into ParallelChain can be deleted, allowing removal of time-sensitive data, or data under court-order for removal.


Individual endorsers cannot alter persisted records without notifying all parties, eliminating the possibility of data tampering by collusion.

No data leakage

Third parties can mathematically verify the integrity of the blockchain without reading the entire, potentially sensitive, data.

How we compare

Type of Blockchain
Transaction Per Second
3+ TPS
12+ TPS
3,500+ TPS
10,000+ TPS
100,000+ TPS
Number of Endorser
Limited to 16 Endorser
Transaction Confirmation
(10-60) * 5 Minutes
(1-20) * 5 Minutes
0.1 Second
3-5 Seconds
0.01 Second
Europe GDPR Privacy Ordinance Compliance
User Registration: Secured and Trusted Access
Identity Fusion
1 Note: Bitcoin and Ethereum requires (N + 5) transactions in order to confirm the Nth transaction.

Frequently asked questions

Parallelchain™ is a software product.

It runs on Linux. The Linux nodes can be a virtual machine in private or public cloud such as AWS/Azure/Alibaba Cloud, or in premise servers of customers. The ParallelChain™ should be able to connect to the internet to request a license from DTL"s licensing server.

The fully tested Linux is Ubuntu 18.04x86-64.

Mining (or proof of work, PoW) is usually for public blockchain open for anyone to join. PoW protects the "decentralization" and hence the "security" of the blockchain system against attacks such as Sybil attacks. incentive economy models so built around that. However, this causes a lot of problems for most business applications. Hyperledger-like blockchain use consortium which leads to heavy dependencies.

ParallelChain™"s unique combined permissioned and permissionless design ensures the data and logic immutability and tamper proof without the heavy problems and requirements like other blockchains.

ParallelChain™ is a private/permissioned blockchain. Its read/writes are through invoking smart contracts. Access to invoke smart contracts are controlled and permissioned.

Application clients or programs need to have an account with an access ID and credential (a password like text string) to authenticate itself and invoke smart contract to ParallelChain™. The ParallelChain™ instance's system administrators create accounts and control access rights of accounts to smart contracts.

ParallelChain™ can be connected from the Internet or configured to be available to internal network only, depending on the configuration. Connectioins to ParallelChain™ can be limited by the traditional firewall/network isolation as well.


DTL cannot read/receive any data unless the customer"s ParallelChain™ opens access to DTL. Your data is secure and is always under your own control.

ParallelChain™ only sends basic system configuration and statistics information to DTL"s license server through the Internet to request software license. The application data are never sent to DTL.

ParallelChain™ provides RESTful API and gRPC API.

SDK libraries in various languages such as Go and JavaScript are available for the gRPC API and RESTful API.


The servers to run smart contracts and run the underlying Key/Value store can be dynamically added by the system administrator to increase the throughput. The scaling up is done online without having to shut down the ParallelChain™ (zero offline time).

After the workload pressure is lower, the ParallelChain™ system can be shrunk online to save resources and cost.

No, for most of the time.

Your application logic in blockchain should be implemented as smart conrtacts. The smart contracts are implemented on top of ParallelChain™ instead of being part of the ParallelChain™. You own the IP of the smart contracts you write, and you can always upgrade/add smart contracts, without having to change or modify the ParallelChain™ software itself.


You can write smart contract code to support the logic/functions.ParallelChain™ provides a programming model of combined Key/Value store with ACID semantics. Common Key/Value store programming techniques apply here. ParallelChain™ APIs also support efficient searching against keyword, regular expression or JSON matching for values in a key range and scanning of key/values. The ACID semantics make the programming much easier than on normal Key/Value stores.

Compared to other blockchains" asynchronous programming model which does not really provide the D (Durability) property, ParallelChain™ gives an RDBMS like development experience by providing synchronous programming model with real ACID properties for applications.

Transactions are confirmed on blockchain immediately before replying the applications’ invocation request. The 0.1 second transaction time makes real interactive applications on blockchain possible.

Build on ParallelChain

Your time machine into

the blockchain era.

ParallelCore Client Go SDK

The ParallelCore client SDK for Go is included in this repository.
Copyright 2019 Digital Transaction Limited. All rights reserved.
Learn More

Get papers and reports about our products

Get Arthur D. Little's Report on ParallelChain™
Read ABC: Asynchronous Blockchain without Consensus
Get the ParallelChain™ Whitepaper
Contact us

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