MASS is the basic infrastructure layer in the world

The MASS consensus engine aims to become the basic infrastructure to all blockchain consensus layers. Based on a Proof-of-Capacity consensus protocol, the MASS consensus engine creates a consensus layer that is permissionless, fair, energy efficiency, secure, and universal, ensuring the fundamental security of the public chain.

The MASS consensus engine is universal and is capable of providing consensus services across any number of public chains. Nodes use storage capacity to run the consensus protocol and do not require permission. The MASS consensus engine is fair and energy efficient; only a very small amount of computing resources are required, meaning everyone has the chance to participate.

MASS Net is the first public chain to make use of the MASS consensus engine. MASS is the store of value in circulation in MASS Net, and is also the value anchor for the MASS consensus engine.

The MASS community is a non-profit online organisation that works for the popularisation of blockchain technology. It was launched in 2017 by Dr. Ren Ling.

What is MASS?

MASS is a basic infrastructure layer that is capable of providing consensus services across any number of public chains. In order to create a sustainable and strong Layer 0, the MASS consensus engine uses MASS Proof-of-Capacity consensus protocol. Proof-of-Capacity establishes a consensus layer that is permissionless, fair, energy efficient, secure, and universal — ensuring the fundamental security of the public chain. Proof-of-Capacity is designed to preclude the use of ASICs: participants just need to have access to storage space (such as hard drive space on a basic laptop.)

MASS Net is the first public chain to make use of the MASS consensus engine (MASS is the store-of-value in circulation and the value anchor of the MASS consensus engine). The network is permissionless — with a level of security similar to the Nakamoto consensus protocol — nodes use storage capacity to run the consensus protocol. The network tends more towards decentralization compared to bitcoin, because competition for blocks does not require the use of prohibitively expensive computing resources. The MASS consensus engine is designed to enable participants to get a fair share of the value created — anyone can mine with commonplace hardware because only a small amount of computing resources is required. Furthermore, the network can support multiple blockchain instances in parallel.

MASS Net enables users to join a secure network and maintain it without the need for permission, and provides all participants a fair share of the value created.

How are MASS coins mined?

To be able to participate in the MASS network, you first need to go to the official MASS official website to and download, configure, and run the MASS Full -Node Client.

While the testnet is in operation, MASS will provide a full node client that integrates both mining and wallet functionality. This includes features such as capacity mining, block synchronisation, a P2P network, address generation and management, and transfer transaction generation and signing. Users only need to download the MASS Full Node Client to be able to use their storage capacity (e.g. hard drive space) to mine MASS and help test transactions.

When the mainnet is in operation, MASS will provide two clients: a mining full node client and a wallet full node client. The mining client can maintain consistency for the MASS ledger, while the wallet client is used exclusively for transfering MASS coins, and performing ecosystem management among others tasks.

Before mining, the MASS client first generates a pair of public and private keys for the user, and uses the public key to create fill thecertain the storage capacity that is required for mining. This capacity is created according to the PoC initialisation algorithm, which servesserving as the basis for the upcoming mining phrase. If the user requires multiple to utilize more storage capacities to fill up the storage medium, the above process can be repeatedted as many times as is necessary.

Once mining begins, in each block generation time step window (round), the client will finds a proofs that correspond tomatches the randomly selected target given in the previous round. These proofs are obtained from the storage capacity which has beenpreviously initialised previously by the client. Following this,before the end of the currenthis round, the best proof is chosen according to the network’s given quality formula and is verified using the public key generated during the initialisation process.

Finally, the public key that provided the best proof becomes the public key for the generated block. This block is then broadcast to and accepted by the network, and the payout address configured by the client will be rewarded accordingly.

What are the hardware and software requirements for mining?

For the test network, During the Testnet, users need to have a computer connected to the internet, a storage medium (e.g. a hard drive), the full-node client for MASS, and Full Node Client for Testnet running on, and a 64-bit Linux or macOS operating system that is capable of running the MASS full-node client. Other than these, there are no other specific requirements besides. For a more detailed guide, please refer to the MASS project documentation.

For the main network, follow the instructions in the MASS full node client and the full node wallet configuration manual.

Will mining MASS damage my hard drive?

Mining MASS will not cause any damage to storage hardware. The client performs random reads on the storage device to find a value of only a few bytes in size. Put simply, during mining the hard disk is accessed a very low number of times, the amount of data in question is negligibletiny, and the access is evenly distributed. It would take years of continuous mining before the total amount of data accessed passed 1 GB.

Does mining MASS take up system resources?

Due to the inherent nature of the MASS PoC consensus protocol, mining MASS coins consumes very little system resources (CPU, memory, bandwidth, etc.) In each block generation window, the MASS Cclient only needs to perform extremely lightweight light reads and calculations, including a few hashes, a few kilobytes of bandwidth usage, and the corresponding storage and internet operations input / output operations (IO). These minor tasks have a negligible impact on the performance of modern computer systems.

Is MASS open source?

The MASS community is committed to a more democratic, fair, energy efficient, secure, scalable and versatile blockchain infrastructure. Therefore, the MASS PoC consensus protocol and the source code for the mining client will be gradually be made public, as the MASS project develops. Technical experts who have an interest in the MASS project are very welcomed to join the community.

As a transparent, permissionless, decentralised blockchain network, MASS has a number of tools and assets it can use to further extend the project. These include the core algorithm, the code, the clients, and the open sourcing of other related tools. These can all help leverage the power of the community to expand and improve the project, guarentee its security, increase the number of tools, and improve the MASS network’s ecology.

Is MASS secure?

Due to the inherently secure nature of the proof-of-capacity method and the blockchain consensus, MASS possesses the ultra-high level of security that users would expect.

Proof-of-capacity is secure in the following ways:

Proofs cannot be forged: MASS’s PoC algorithm makes use of Time-memory trade-offs. If the prover provides the capacity proof S, it shows that the prover filled the capacity S according to the preset rules, which would be very difficult to calculate quickly.

51% Byzantine fault tolerance: When competing for the next block, each node looks for a proof that matches the current block in its own initialised storage space. The probability of a node generating the new block is in proportion to the ratio between the initialised capacity of the entire network and the initialised capacity of the current node. If a malicious node intends to take control of block generation, it needs at least 51% of the capacity of the entire network. However, to have more than 51% capacity, the physical hardware investment would be colossal. Therefore, malicious nodes do not have sufficient incentive to break the MASS consensus.

The unpredictability of the random target value: In the MASS PoC algorithm, each block provides a random value as the target for the initialised initialised capacity of all nodes. This random value is produced by a verifiable random random function and no node can control this. Therefore, at the same block height, all nodes have the same prior information when competing for the next block.

The blockchain consensus protocol is secure in the following ways:

Resistant to forking: The fork detection punishment scheme protects against Nothing-at-Stake attacks splitting the chain. Since MASS uses a proof-of-capacity algorithm, without taking necessary protective measures it would be at risk from nothing-at-stake attacks. That is, the proof S can be used as the proof on the main chain and also on a fork at the same time at no additional cost. In order to deal with this risk, the MASS system uses a fork detection punishment scheme. If a main chain block and a forked chain block are found to have the same proof, all nodes will automatically blacklist the public key used in initialisation for that storage capacity and reject subsequent proofs provided from it.

Resistant to selfish mining: In a proof-of-work consensus mechanism, a malicious node can obtain a time advantage in competing for the next block by hiding blocks already mined. However, in the MASS blockchain consensus protocol, initialised nodes can find proofs extremely quickly, so there is no room for strategies of this type.

Resistant to double-spend transactions: The MASS system uses a UTXO (Unspent Transaction Output) transaction model, which is secured by asymmetrically encrypted mathematical algorithms. Block rollback is guaranteed by the PoC algorithm’s 51% Byzantine fault tolerance.

MASS Full-Node Wallet

Graphic user interface full-node client

MASS Miner Full-Node

Graphic user interface mining full-node client

Mainnet Source Code

MASS Miner Full-Node SrcDownload

MASS Full-Node Wallet SrcDownload

Copyright © All rights reserved.

Who created MASS?

MASS was created by the MASS community. The MASS community is an open, non-profit online organisation whose mission is to promote blockchain technology among the wider public, thereby improving people’s lives and leading to a fairer and more prosperous society.

The MASS community was launched in 2017 by Dr. Ren Ling. We are constantly furthering our development through continuous online discussion and cooperation, as well as periodic offline events. The MASS community welcomes all experts with backgrounds in computer science, social sciences, economics, finance, or entrepreneurship, and who have the same aims as us. We prefer members with original insights and strong collaboration skills. In order to ensure community members are sufficiently qualified, new members must be first approved by at least half of the existing members. The MASS community has strict requirements for research and implementation to ensure the excellence of our work. When the time is right, our work will be made open source, a move which will promote wider awareness of the technology and will aid with future collaboration.


The MASS blockchain system has the following features:


Using the principle of time-memory trade-offs, the PoC protocol ensures the unforgeability of proofs, and together with the use of a verifiable random function ensures that the MASS system has 51% Byzantine Fault Tolerance. Furthermore, a fork detection punishment scheme protects the main chain from Nothing-at-Stake attacks that could split the main chain.

● Fair:

The MASS PoC consensus protocol guarantees that a node’s block generation probability is dependent only on the proof of effective capacity provided by the node. In addition, the proof of effective capacity is storage medium independent, so that all nodes participating in the MASS network have similar marginal costs.

● Energy efficient:

In the MASS PoC protocol, computing resources are only required when initialising storage capacity, and when entering the block consensus phase storage capacity data is only accessed at O(1) complexity a time. Therefore, using the MASS PoC protocol for block consensus does not require continuous power input consumption. When the MASS system performs block consensus, the computing resources used are negligible; small enough not to affect the normal usage of a computer. When storage capacity is not participating in the MASS network, it can be reformatted and used for other uses purposes.

● Universal:

During the consensus process, the node only needs to perform an access query on the initialised capacity and does not perform any data operations on it. Therefore, the same storage space can provide capacity


PoC algorithm: MASS consensus

Max supply: 206,438,400

Block reward: Halving

Block time: 45 seconds (3s/Slot)

Difficulty: Retargets at every block



ResearchThe PoC core algorithm was proposed, and after research, verifiedSeptember 2015 — June 2017

The MASS PoC consensus agreement was proposed, and after research, verifiedJune 2017 — April 2018

Development & TestnetsRecruitment of experts for the community to develop PoC blockchain prototypeMay 2018 — March 2019

MASS Testnet 1: system verificationMarch 2019

MASS Testnet 2: system security testApril 2019

MASS Testnet 3: system stability testMay 2019

MASS Testnet 4: system reliability testJune 2019

MASS NetMASS Net: full-node client releaseSeptember 2019

MASS EngineMASS Engine: packaging and publishing for consensus engineNovember 2019

Layer 2Development and release of the MASS Net extension pluginFebruary 2020

Cross-chainDevelopment and release of the MASS Cross-chain protocolJune 2020

Social Media:


MASS Docs:




ANN Thread:

MASS Website:


My Bitcointalk Username — ghazbaz2

My Bitcointalk profile —;u=2728885

ETH: 0x9E2A20D6298438532e4830cd33350541dc057A7E



Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store
Ameena Skiekh 2020

Ameena Skiekh 2020

Work in Emirates National Oil Company i am bitcoin trader also