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Security |
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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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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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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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Permissioned
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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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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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Privacy concerns are addressed through the pluggable uniqueness services, and restriction of viewing transactions.
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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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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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Algorithms |
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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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Multiple options:
Pluggable Framework
No-op (no consensus)
PBFT
PBFT - Practical Byzantine Fault Tolerance
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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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Efficiency |
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Fast
Built for financial applications
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Varies
Depends on implementation
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Fast
3-4 seconds : set to improve with future updates. See future planned work.
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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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TBD
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Development |
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Proprietary Codebase
Details
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Open Source
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Open Source
https://github.com/hyperledger/fabric
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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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General |
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Blockchain / DLT type
Details
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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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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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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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Less focus on modularity
Focus is on financial applications, but may support more use cases in the future.
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Modular Architecture is a core focus of Platform
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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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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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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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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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Varies
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500 transactions per block
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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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