symbol シンボル XYM ジム NEM ネム blockchain

Empowering People with Blockchain


Welcome to Symbol & NEM. Empowering the world with robust and easy-to-use Web3 infrastructure!

A public blockchain inspired by NEM

nem logo ネム ロゴ
After the original NEM blockchain launch in 2014, redevelopment under the codename 'Catapult' began with the intention of improving performance, enhancing functionality, and the refining the consensus algorithm. In 2021, 'Symbol' was launched as a distinct blockchain using the completed 'Catapult' codebase. Several months after launch, a successful 'community hard fork' across both NEM and Symbol established a new path forward; this new direction includes an emphasis on engaged community, genuine decenteralization, and a vision of a novel protocol layer facilitating universal cross-chain collaboration that would eventually emerge from NEM and Symbol
What is NEM?

Advanced Functionality

symbol nem functionary background

Symbol has rock solid interfacing and excellent extensibility through its plugin-based architecture. Developers can easily combine and utilize advanced plug-in interfaces inclidng a Command Line Interface, public SDK, and REST APIs. Developers do not have to start from scratch, and off-chain application developement avoids immutable bugs, exposed code, and countless hours spent verifying and debugging before deployment.

Supporting Safe Transactions

Built-in security for multisig signatures
Native support for multi-signature accounts allows up to 25 signatories and up to 3 signatory levels. The combination of multi-signature and multi-level logic approach enables extreme flexibility in approval logic. In the event of one signatory losing their private key or requiring removal, access to the multisig account can be adjusted with the signatures of all the other co-signatories. This facilitates the design of security and flexible operation of the blockchain implementation according to the user's practice.
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Provide a powerful, stable, secure, and fast solid network with a Four-Layered Architecture
The Symbol blockchain is built on a multi-layered node architecture. PeerNodes maintains the network, decentralizing the Symbol chain and recording its transactions and history. APINodes interface with PeerNodes and wallets for transaction requests, history, and the generation of new blocks. API nodes also include Rest Gateways, which facilitate a wide variety of external requests from wallets and custom-built solutions. In addition to REST API gateways, Nodes also include a robust Command Line Interface that helps facilitate localized solutions and plugins. The Symbol Client consists of the wallet and the SDK; it is largely modularised to encourage innovation, ensure security, and simplify updates.
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PoS+ consensus algorithm
Consensus algorithms are shared or mutually agreed upon by all participating nodes in a network, and is used in the generation of new blocks. In Symbol, the PoS+ (Proof of Stake Plus) consensus algorithm is adopted as an improved version of NEM's PoI (Proof of Importance) algorithm. Symbol's PoS+ mechanism allows nodes to periodically 'Harvest' new blocks proportionate to their 'importance'. The PoS+ mechanism considers not only 'amount of staking', but it also promotes the ecosystem’s health by rewarding participants based on their activity score which are counted through 'total fees used by the wallet' and 'number of times of reward in the past', using to discourage the continued concentration of wealth in certain accounts. The POS+ algorithm avoids unnecessary energy waste, and is much more environmentally friendly than the Proof of Work algorythms that secure many blockchains. Node operators and delegators are rewarded for their contribution to the maintainance of the chain via harvesting rewards. These rewards draw from a signifigant pool of XYM allocated for this purpose, and follow a declining reward rate schedule linked to Bitcoin's block reward model.
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News Release

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NFTDrive launches a demonstrat...

9/29/2024


NFTDrive launches a demonstration of a new real-time collaborative subtitling sy...

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スマジム イベント参加でポイ活

9/25/2024


スマジム イベント参加でポイ活

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17 companies and organisations...

9/16/2024


17 companies and organisations using Symbol for their business will be exhibitin...

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See how Symbol Blockchain is b...

8/30/2024


See how Symbol Blockchain is being used for social goods

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Poiny, an easy to use applicat...

8/18/2024


Pointy, an easy to use application for creating Loyalty Cards

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'New Developments in FoodTech ...

7/4/2024


'New Developments in FoodTech Creating Palatability', a book on food research, h...

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XYMPOSIUM 2024 is announced

6/30/2024


XYMPOSIUM 2024 is announced

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NEMTUS joins IVS2024 KYOTO as ...

6/26/2024


NEMTUS joins IVS2024 KYOTO as a community partner

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NEMTUS exhibits at “10th Techn...

5/4/2024


NEMTUS exhibits at “10th Technical Book Doujinshi Expo”

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11 companies and organisations...

4/24/2024


11 companies and organisations using Symbol for their business will be exhibitin...

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April 7, 2024 Post Mortem

4/7/2024


On March 30th, at approximately 11:00AM UTC, Toshi alerted the NEM & Symbol Disc...

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symbol-catapult v1.0.3.7 relea...

4/7/2024


Symbol-catapult v1.0.3.7 has been released. This release includes upgrades to th...

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Release of expo-symbol-sdk for...

3/2/2024


The Symbol Blockchain Community is pleased to announce the release of `expo-symb...

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Symbol Blockchain Community La...

3/2/2024


Symbol Japan Forum, a DAO dedicated to promoting Symbol blockchain development, ...

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Community Development Symbol S...

2/23/2024


Community Development Symbol Software Vol. 1

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symbol-sdk v3 updated

7/30/2023


Symbol-sdk v3 updated

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"JUGGLE", a next-generation fi...

6/30/2023


"JUGGLE", the next-generation file security system, Opening Line Inc. developed ...

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NEMTUS will appear in the Zaif...

6/24/2023


NEMTUS will will appear in a webinar organised by Caica Exchange, managing the c...

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Publication of the Siam Reiwa ...

6/19/2023


Publication of the Siam Reiwa (2020) co., ltd. report

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NEMTUS Approved as IVS Crypto ...

6/17/2023


NEMTUS, a non-profit organization for the promotion of NEM technology, announced...

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Smooth integration into existing systems

symbol sdk description
The core contributors behind NEM learned countless lessons along the way, and these lessons have heavily influenced Symbol. Symbol was designed with usability and extensibility in mind; while wallets profoundly enable the average user, the boundless extensibility provided by the SDK, CLI, and Rest API effectively shatter barriers to development. You do not need to learn cryptography nor a specific programming language in order to profoundly interact with the blockchain; even junior developers and hobbiests can build with ease.
Getting Started with SDKsSDKs Repository

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How to Choose a Wallet

Things to watch out for

Where to consult when you need help

Information for developers

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