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Security |
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Similar security models to Hyperledger Fabric, but also incorporates the IBM Cloud Services as an added security layer when using the platform.
For more information:
http://hyperledgerdocs.readthedocs.io/en/latest/security_model.html
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"Block Security Protocol" (BSP)
Employs a BSP to implement the signature function on each data bock during PoA cosnensus. Only the blocks with authorized signatures can be mined and accepted.
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Data is only shared between parties involved in the transaction, verifiers, and permissioned observers. This allows an extra layer of security from traditional DLT where the data is spread throughout the network.
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Permissioned
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Permissioned Aspects
Only permissioned parties can view the raw transactional data stored in the public blockchain. To all others, it will be hashed and secured.
Anyone can become a node, but there is a hard cap of 101 Authority Nodes. It requires a great deal of transparency and public capital to become a node.
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Permissioned
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Private channels
Fabric has a unique concept of channels that supports transaction privacy. Private channels are restricted messaging paths that can be used to provide transaction privacy and confidentiality for specific subsets of network members.
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Yes
Transaction Data Privacy Protocol (TxDP): Ensures privacy of transaction data.
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Privacy concerns are addressed through the pluggable uniqueness services, and restriction of viewing transactions.
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Algorithms |
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Plugable consensus (PBFT)
Fabric’s notion of consensus is broad and encompasses the whole transaction flow, starting from proposing a transaction to the network to committing it to the ledger. It uses the plugable Byzantine fault tolerance (PBFT) algorythm
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Proof of Authority
Consists of 101 Authority Nodes that are controlled by separate, self-interested entities. Due to the variety of companies, this will secure the network and ensure a trustless environment. PoA allows for a higher number of TPS than PoW and PoS, meaning VeChain can support up to 10,000 TPS.
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Notaries - Pluggable Framework, Validity consensus and Uniqueness consensus
transaction validity and transaction uniqueness.
https://docs.corda.net/key-concepts-consensus.html
Corda uses special Notary Nodes to reach consensus. Notaries are nodes that specifically address double spend attempts.
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Efficiency |
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Varies
Depends on implementation
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No data
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Fast
Built for financial applications
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Block Confirmation Time
Details
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Varies
Depends on implementation
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Fast
Set during launch at 10 seconds, and will be iterated after use.
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TBD
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Development |
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Proprietary Codebase
Details
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Hyperledger Fabric is open source. IBM Blockchain is a proprietary layer that sits on top of Hyperledger as a simple to use platform accessing the blockchain
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Open source with proprietary applications
https://github.com/vechain
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Open Source
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General |
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Blockchain / DLT type
Details
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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.
Based on the Hyperledger Fabric framework.
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Public
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Not a blockchain. Uses DLT to create transaction efficiencies between permissioned parties rather than the same ledger for the entire network, which R3 Corda believes is inefficient.
https://vimeo.com/205410473
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Plug + Play Architecture
Easy to operate software platform to build out use case, test, and implement
https://www.ibm.com/blockchain/platform/
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Yes
VeChain exists as a platform to be developed on. Meaning the core features and services can be applied in a number of industries. Some utilizing IoT, some just using the consensus mechanism.
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Less focus on modularity
Focus is on financial applications, but may support more use cases in the future.
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Supports 1000 TPS. Designed for high throughput business applications. Scales relative to Hyperledger Fabric new developments.
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50 - 10,000 TPS
50 TPS is currently the maximum. Once VeChain moves to thier mainnet, they plan to scale their TPS to 10,000. This will enable Enterprise level support for financial and sensor data.
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Corda focuses on scaling through reducing inefficiencies in consensus mechanisms. By limiting involvement to just the transacting parties, beneficiaries, and verifiers it aims to position itself as more scalable than PoW
performance considerations https://www.corda.net/2017/12/dlt-performance-considerations/
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500 transactions per block
Same as Hyperledger Fabric
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Depends on implementation
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Varies
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