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Security |
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Transactions are confirmed and validated through validator nodes.
The more trusted validators in the network, the harder it will be to control and change the ledger as an outside attack.
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Membership Service Provider - pluggable interface that supports customizable credential architectures and certificate authorities
Concrete identity format
User credential validation
User credential revocation
Signature generation and verification
For more information:
http://hyperledgerdocs.readthedocs.io/en/latest/security_model.html
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Public Blockchain with security features built in.
Lamport digital signature algorithm. Claims to be resistant to quantum computer attacks.
Customized P2P network with data storage encryption, location transparency, source nontraceability
Merkle Patricia Trie data structure
Although the hash algorithm built into Bitcoin and Ethereum is secure with todays technology from brute force attacks, quantum computing may support enough computational power to compromise these algorithm.
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Permissioned
Anyone can become a validator, but will only be relevant if trusted.This provides public support for infrastructure, but keeps the transaction nature private when needed.
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Consortium
Permissioned, private network.
To enable permissioned networks, Hyperledger Fabric provides a membership identity service that manages user IDs and authenticates all participants on the network. Access control lists can be used to provide additional layers of permission through authorization of specific network operations.
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Permissionless
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Transaction information on the ledger is public, but payment information is not.
This means that in the event of a security breach, no personal financial information can be compromised through this network.
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Private Channels
A Private Channel is a subnet communication between two or more parties in the network that performs a private and confidential transaction.
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Based on zero knowledge proof. Hides the send, receipt address and transfer amount.
Similar in function to the zk-SNARK feature Ethereum added during their Metropolis release.
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Algorithms |
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Ripple Protocol Consensus Algorithm
70+ validators
Applied every few seconds by all nodes. Once consensus is reached, the current ledger is closed. Most recently closed ledger is known as the last closed ledger and is the basis of the distributed ledger.
For more information: https://vimeo.com/64405422
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Multiple options:
Pluggable Framework
No-op (no consensus)
PBFT
PBFT - Practical Byzantine Fault Tolerance
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Fast Paxos PoS variant.
The consensus of TRON adopts a three-step strategy.
1. Kafka-based technology system: implement a centralized consensus algorithm.
2. Raft-based distributed consensus mechanism: realize the centralized and distributed leapfrogging. Improves network function/distribution and lays the foundation for distribution with no logical center.
3. Consensus mechanism of Proof of Stake and realize the Byzantine Fault Tolerant Consensus.
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Efficiency |
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Fast
3-4 seconds : set to improve with future updates. See future planned work.
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Varies
Depends on implementation
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Moderate
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Block Confirmation Time
Details
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TBD
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Varies
Depends on implementation
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Fast
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Development |
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Proprietary Codebase
Details
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Open source with proprietary applications
The Ripple protocol is open source: https://github.com/ripple . Proprietary work is xCurrent, xRapid, xVia
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Open Source
https://github.com/hyperledger/fabric
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Open source but goverened by the TRON organization
Built on Ethereum, but planning to move to own main net in June 2018
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General |
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Blockchain / DLT type
Details
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Permissioned Network, Public Architecture
Ripple uses a decentralized network, but has trusted validator nodes who confirm transactions through the 'last closed ledger'.
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Federated / Consortium, Permissioned Network
Federated Blockchains operate under the leadership of a group. As opposed to public Blockchains, they don’t allow any person with access to the Internet to participate in the process of verifying transactions. Federated Blockchains are faster (higher scalability) and provide more transaction privacy - important aspects for Enterprise focused deployments
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Public
Open source public blockchain fuelled by cryptocurrency.
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Yes
3 different plug and play offers on top of the protocol layer for specific needs: xCurrent, xRapid, xVia
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Modular Architecture is a core focus of Platform
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Similar to Ethereum:
Generic, with DApp and Smart Contract support for wider applications
It is not modularity that stands out but the provision of a generic platform suitable for various types of transactions and applications
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1500 TPS with potential of tens of thousands through Ripple Payment Channels
While it does not compare to the tps of a Visa transaction (~150,000), Ripple offers a stable solution for the size it it currently at.
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1000 TPS capacity for now. Developed with scaling in mind. Provides flexibility in size and throughput depending on the implementation.
A Performance and Scalability Workgroup exists within the community to discuss, research, and identify key use cases and metrics for all blockchains.
Hyperledger Fabric is built on a modular architecture that separates transaction processing into three phases: distributed logic processing and agreement ('chaincode'), transaction ordering, and transaction validation and commitment. This separation confers several advantages: Fewer levels of trust and verification are required across node types, and network scalability and performance are optimized.
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Currently supports 15 TPS as it is on the Ethereum platform. Will be able to support up to 1000 TPS once main net launches
Scalability is a core feature for TRON. They want to be able to support large commercial projects, while minimizing transactions fees and time.
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Large
The ledger is constantly refreshed as soon as there is a new input in the network. The last closed ledger model is different from the blockchain, in that there are no history of blocks for the distributed ledger.
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500 transactions per block
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Varies
https://tronscan.org/#/blockchain/stats
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